CN213039408U - Plunger pump structure of automobile braking system - Google Patents
Plunger pump structure of automobile braking system Download PDFInfo
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- CN213039408U CN213039408U CN202021031804.5U CN202021031804U CN213039408U CN 213039408 U CN213039408 U CN 213039408U CN 202021031804 U CN202021031804 U CN 202021031804U CN 213039408 U CN213039408 U CN 213039408U
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Abstract
The utility model discloses an automobile brake system plunger pump structure. The pump sleeve is installed in a pump body installation hole, the pump sleeve is provided with a vertical blind hole, the vertical blind hole is provided with an end cap plunger assembly which comprises an end cap, a one-way valve spring II, a reset spring, a steel ball II and a plunger, the lower end hole wall of an end cap intercommunicating pore is set into a conical surface and is provided with the steel ball I, oil outlets are formed in two sides of the vertical blind hole, the steel ball I is positioned between the oil outlets on the two sides, the vertical blind hole is provided with a spring groove, and the upper end and the lower end of the one-way; the upper end of the pump sleeve is sleeved with an oil filter, the plunger sequentially penetrates through the pump sleeve and the pump body and then is connected with the reciprocating driving mechanism, the upper end of the plunger penetrates through the pump sleeve and is in sealing connection with the pump body mounting hole, and the oil filter is arranged between the pump sleeve and the plunger and covers the oil inlet. The utility model discloses a pump housing designs into overall structure, and the preceding body function of its functional integration current pump and pump housing function can improve plunger pump efficiency, and extension plunger life improves ESC product property ability and life.
Description
Technical Field
The utility model relates to a product plunger pump technical field, specific theory relates to an automobile brake plunger pump structure.
Background
The automobile brake plunger pump is a core component of an automobile electronic stability system (ESC), and is used for pumping brake fluid generated by decompression in a brake adjusting process back to a brake master cylinder to provide power for the active pressurization of the ESC.
The existing plunger pump is complex in structure; still be equipped with rubber seal at plunger and reset spring complex one side, rubber seal can produce certain degree of failure and lead to plunger performance reduction in the use, leads to ESC accommodation process to appear the phenomenon of locking in short-term, realizes that drive antiskid function is more difficult, arouses the uncomfortable of driving.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides an automobile brake system plunger pump structure, optimizes current plunger pump structure, improves plunger pump efficiency, extension plunger life-span.
The utility model discloses a realize through following technical scheme:
the utility model comprises a pump body, a pump sleeve arranged in the pump body, a one-way valve spring I, a steel ball I, a plug plunger assembly, an oil filter, a pump body, a sealing ring and a retainer ring; the pump sleeve is arranged in a mounting hole formed in the lower end of the pump body, a vertical blind hole is formed in the inner end of the pump sleeve, an end cap plunger assembly is arranged in the vertical blind hole and comprises an end cap, a one-way valve spring II, a reset spring, a steel ball II and a plunger, the end cap is fixedly assembled in the vertical blind hole, the plunger is movably assembled in the vertical blind hole and is positioned above the end cap, a communicating hole vertically penetrating from top to bottom is formed in the center of the end cap, a vertical hole is formed in the center of the lower end of the plunger, oil inlets are formed in the side walls of the two symmetrical sides of the middle of the plunger, the upper end of the vertical hole is communicated with the oil inlets on the two sides of the vertical hole, a boss is arranged in the center of the end face of the lower end of the plunger, the hole wall of the lower end of the boss is provided with a conical surface, the sealing ring is arranged between the end part of the return spring and the plunger step at the periphery of the boss; the inner space of the vertical blind hole of the pump sleeve between the plug and the plunger is used as a plunger cavity.
The wall of the lower end hole of the plug communicating hole is set to be a conical surface with a small upper part and a large lower part, a steel ball I is installed on the conical surface, oil outlets are formed in two symmetrical side walls of the bottom of a vertical blind hole of a pump sleeve below the plug, the steel ball I is located between the oil outlets on the two sides, a spring groove is formed in the bottom of the vertical blind hole below the oil outlet, a one-way valve spring I is installed in the spring groove, and the upper end and the lower end of the one-way valve spring I; the oil filter is sleeved at the upper end of the pump sleeve, the upper end of the plunger sequentially penetrates through the pump sleeve and the pump body and then is connected with the reciprocating driving mechanism, the upper end of the plunger penetrates through the pump sleeve and then is connected with the mounting hole of the pump body through a sealing ring and a check ring, and the oil filter is mounted at the joint between the pump sleeve and the plunger and covers the oil inlet.
The reciprocating driving mechanism comprises an eccentric bearing and a motor, the upper end of a plunger in the pump body is connected with the motor through the eccentric bearing, the motor is positioned in the pump body on the side of the eccentric bearing, the motor rotates to drive the eccentric bearing to rotate, so that the plunger is driven to reciprocate in a hole of the pump body through a similar cam structure, and the reciprocating motion direction of the plunger is along the radial direction of the eccentric bearing.
The pump sleeve is characterized in that the circumferential surface of the end part of the lower end of the pump sleeve is in interference fit with the inner wall of the pump body, and the circumferential surface of the middle part of the pump sleeve is in clearance fit with the inner wall of the pump body by adopting steps.
The outer peripheral surface of the plug and the inner hole of the pump sleeve are in interference fit, and the conical surface of the hole wall at the lower end of the plug communicating hole is a one-way sealing conical surface with a conical angle of 90 degrees.
And an annular positioning boss is arranged around the upper hole end face of the plug communicating hole, and the lower end of the check valve spring II is sleeved and limited on the peripheral side face of the annular positioning boss.
The sealing ring is made of high polymer materials, and the friction coefficient between the high polymer materials and metal of the sealing ring is lower than that between rubber and metal.
The sealing ring adopt whole injection moulding, and the sealing ring is equipped with the sealing lip limit with reset spring complex lower terminal surface, the sealing ring is equipped with a plurality of recesses along circumference interval arrangement with plunger complex up end simultaneously.
The pump sleeve and the plunger are integrally preformed, and the pump sleeve and the plunger are simple in structure and easy to process.
The utility model discloses a pump jacket designs into overall structure, and the preceding body function of its function integration current pump and pump jacket function.
The utility model discloses the sealing washer groove has been cancelled to the plunger, adopts cold-heading forming process, is favorable to reducing this product cost than preceding machining technology.
The utility model discloses can install in car electron stable system (ESC).
The utility model has the advantages that:
the utility model discloses a car braking system plunger pump structure improves plunger pump efficiency, and extension plunger life 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 perspective view of the pump sleeve construction;
FIG. 3 is a cross-sectional view of the stopper;
FIG. 4 is a perspective view of the upper end face of the seal ring;
FIG. 5 is a perspective view of the lower end face of the seal ring;
fig. 6 is a structural perspective view of the plunger.
In the figure: the pump comprises a pump sleeve 1, a one-way valve spring I2, a steel ball I3, a plug 4, a one-way valve spring II 5, a return spring 6, a steel ball II 7, a sealing ring 8, a plunger 9, an oil filter 10, a pump body 11, a sealing ring 12, a check ring 13 and an eccentric bearing 14.
Detailed Description
The following describes the embodiments of the present invention with reference to the drawings:
as shown in fig. 1, the specific implementation includes a pump body 11, a pump sleeve 1 installed in the pump body 11, a one-way valve spring i 2, a steel ball i 3, a plug plunger assembly, an oil filter 10, the pump body 11, a sealing ring 12, and a retainer ring 13. The pump sleeve 1 is arranged in a vertical mounting hole formed at the lower end of a pump body 11, a vertical blind hole is formed in the inner end of the pump sleeve 1, a plug plunger assembly is arranged in the vertical blind hole and comprises a plug 4, a one-way valve spring II 5, a reset spring 6, a steel ball II 7 and a plunger 9, the plug 4 is fixedly assembled in the vertical blind hole, the plunger 9 is movably assembled in the vertical blind hole and can freely move along the axial direction, the plug 4 is closer to the bottom of the vertical blind hole of the pump body 11 than the plunger 9, the plunger 9 is positioned above the plug 4, a communication hole vertically penetrating up and down is formed in the center of the plug 4, a vertical hole is formed in the center of the lower end of the plunger 9, oil inlets are formed in the symmetrical two side walls in the middle of the plunger 9, the oil inlets at the upper end and the two sides of the vertical hole are communicated, a boss is arranged in, an upper one-way valve consisting of the wall of the lower end hole of the vertical hole of the plunger 9 and a steel ball II 7; the upper end and the lower end of a one-way valve spring II 5 are connected between the middle of the end face of the plug 4 and the steel ball II 7, the upper end and the lower end of a return spring 6 are connected between the outer edge of the end face of the plug 4 and the plunger 9 step on the periphery of the boss, and a sealing ring 8 is arranged between the end of the return spring 6 and the plunger 9 step on the periphery of the boss and used for sealing between the plunger 9 and the inner wall of the pump sleeve 1; the inner space of the vertical blind hole of the pump sleeve 1 between the plug 4 and the plunger 9 is used as a plunger cavity;
as shown in fig. 3, the hole wall of the lower end of the communicating hole of the plug 4 is set to be a conical surface with a small upper part and a large lower part, and a steel ball I3 is installed on the conical surface, and the hole wall of the lower end of the communicating hole of the plug 4 and the steel ball I3 form a lower one-way valve; as shown in fig. 2, oil outlets are formed in two symmetrical side walls of the bottom of a vertical blind hole of a pump sleeve 1 below an end cap 4, a steel ball I3 is located between the oil outlets at two sides, a spring groove is formed in the bottom surface of the vertical blind hole below the oil outlet, a one-way valve spring I2 is installed in the spring groove, and the upper end and the lower end of the one-way valve spring I2 are respectively connected with the steel ball I3 and the bottom of the spring groove; the upper end cover of pump housing 1 is equipped with oil and strains 10, and plunger 9 upper end is connected with reciprocating drive mechanism after passing through pump housing 1 and pump body 11 in proper order, and plunger 9 upper end is worn out behind pump housing 1 and is connected through sealing washer 12, retaining ring 13 between the mounting hole of the pump body 11, and oil is strained 10, sealing washer 12, retaining ring 13 and is arranged from the bottom up in proper order, and oil is strained 10 and is installed in the junction between pump housing 1 and plunger 9 and cover the oil inlet.
The reciprocating driving mechanism comprises an eccentric bearing 14 and a motor, the upper end of a plunger 9 in the pump body 11 is connected with the motor through the eccentric bearing 14, the motor is positioned in the pump body 11 on the side of the eccentric bearing 14, the motor rotates to drive the eccentric bearing 14 to rotate, so that the plunger 9 is driven to reciprocate in a hole of the pump body 11 through a similar cam structure, and the reciprocating direction of the plunger 9 is along the radial direction of the eccentric bearing 14.
As shown in fig. 3, the pump sleeve 1 and the pump body 11 are in interference connection; the pump sleeve 1 and the plunger 9 are in clearance fit. Specifically, the circumferential surface of the end part of the lower end of the pump sleeve 1 is in interference fit with the inner wall of the pump body 11, and the circumferential surface of the middle part is in clearance and step fit with the inner wall of the pump body 11. The right end of the pump body 11 is provided with an outer flange structure which is matched and embedded in an annular inner groove of the plunger 9, so that the sealing performance of the position is improved, the plunger 9 cannot be separated when the plunger 9 is driven to move by high pressure, and the working pressure of the plunger pump is improved.
The outer peripheral surface of the plug 4 is in interference fit with the inner hole of the pump sleeve 1, and the conical surface of the hole wall at the lower end of the communicating hole of the plug 4 is a one-way sealing conical surface with a conical angle of 90 degrees.
An annular positioning boss is arranged around the upper hole end face of the communicating hole of the plug 4, and the lower end of the one-way valve spring II 5 is sleeved and limited on the peripheral side face of the annular positioning boss, so that the annular positioning boss has a positioning effect on the one-way valve spring II 5. Therefore, the valve sleeve structure can be omitted, the plunger pump is simpler and more effective in structure, the pressure of the one-way valve spring II on the steel ball II is increased, the sealing performance of the steel ball II is improved, and the improvement of the working efficiency of the plunger pump is facilitated.
The sealing ring 8 is made of high polymer materials, and the friction coefficient between the high polymer materials and the metal of the sealing ring 8 is lower than that between rubber and the metal, so that the friction force between the sealing ring and the pump sleeve is small, and the working efficiency of the plunger pump is improved.
As shown in fig. 4 and 5, the sealing ring 8 is integrally injection-molded, the sealing ring 8 is provided with a sealing lip on the lower end surface matched with the return spring, meanwhile, the sealing ring 8 is provided with a plurality of non-through grooves which are arranged at intervals along the circumferential direction on the upper end surface matched with the plunger 9, and the plurality of non-through grooves are uniformly distributed at intervals along the circumferential direction on the upper end surface of the sealing ring 8, so that the weight of the sealing ring can be reduced, and the circumferential deformation of the sealing ring can be reduced during working.
In specific implementation, an oil outlet channel communicated with the brake oil inlet is formed in the side wall of the pump body 11 opposite to the oil outlet, and an oil inlet channel communicated with the energy accumulator is formed in the side wall of the pump body 11 opposite to the oil inlet. The oil path is as follows: when the anti-lock brake works, oil enters the oil inlet from the energy accumulator, flows to the brake oil inlet after flowing out from the oil outlet under the pushing of the work of the plunger pump, and drives the brake to work.
The utility model discloses a plunger pump working process:
the plunger 9 of the plunger pump reciprocates left and right with the rotation of the eccentric bearing 14.
When the plunger 9 moves upwards, the volume between the plug 4 and the sealing ring 8 is increased, so that a certain vacuum degree is formed inside the plunger cavity, the brake fluid pushes the steel ball II 7 open in the direction of the figure 1 to fill the space of the plunger cavity between the plug 4 and the sealing ring 8, and oil pumping of the plunger pump is realized.
When the plunger 9 moves downwards, the upper one-way valve formed by the steel ball II 7 and the plunger 9 is closed, and the volume between the plug 4 and the sealing ring 8 is reduced to cause the brake fluid pressure in the plunger cavity to increase; when the pressure of the brake liquid hydraulic pressure on the steel ball I3 is greater than the pressure of the brake liquid at the oil outlet on the steel ball I3, the brake liquid backs up the steel ball I3 and is discharged in the direction of the oil outlets at two sides of the bottom of the vertical blind hole in the drawing 1, and oil discharge of the plunger pump is realized.
Therefore, the structure of the existing plunger pump is optimized, the efficiency of the plunger pump is improved, and the service life of the plunger is prolonged.
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 an automobile brake system plunger pump structure which characterized in that: the oil filter comprises a pump body (11), a pump sleeve (1) arranged in the pump body (11), a one-way valve spring I (2), a steel ball I (3), a plug plunger assembly, an oil filter (10), the pump body (11), a sealing ring (12) and a retainer ring (13); the pump sleeve (1) is arranged in a mounting hole formed in the lower end of the pump body (11), a vertical blind hole is formed in the inner end of the pump sleeve (1), a plug plunger assembly is arranged in the vertical blind hole and comprises a plug (4), a one-way valve spring II (5), a reset spring (6), a steel ball II (7) and a plunger (9), the plug (4) is fixedly assembled in the vertical blind hole, the plunger (9) is movably assembled in the vertical blind hole, the plunger (9) is positioned above the plug (4), a communication hole vertically penetrating up and down is formed in the center of the plug (4), a vertical hole is formed in the center of the lower end of the plunger (9), oil inlets are formed in the symmetrical two side walls in the middle of the plunger (9), the upper end of the vertical hole is communicated with the oil inlets in two sides, a boss is arranged in the center of the end face of the lower end face of the plunger (9), the, the upper end and the lower end of a one-way valve spring II (5) are connected between the middle of the end face of the plug (4) and the steel ball II (7), the upper end and the lower end of a return spring (6) are connected between the outer edge of the end face of the plug (4) and the step of the plunger (9) on the periphery of the boss, and a sealing ring (8) is arranged between the end of the return spring (6) and the step of the plunger (9) on the periphery of the boss; the inner space of the vertical blind hole of the pump sleeve (1) between the plug (4) and the plunger (9) is used as a plunger cavity;
the hole wall of the lower end of a communicating hole of an end cap (4) is set to be a conical surface with a small upper part and a large lower part, a steel ball I (3) is installed, oil outlets are formed in two symmetrical side walls of the bottom of a vertical blind hole of a pump sleeve (1) below the end cap (4), the steel ball I (3) is located between the oil outlets on two sides, a spring groove is formed in the bottom of the vertical blind hole below the oil outlet, a one-way valve spring I (2) is installed in the spring groove, and the upper end and the lower end of the one-way valve spring I (2) are respectively connected; the upper end of the pump sleeve (1) is sleeved with an oil filter (10), the upper end of the plunger (9) penetrates through the pump sleeve (1) and the pump body (11) in sequence and then is connected with the reciprocating driving mechanism, the upper end of the plunger (9) penetrates through the pump sleeve (1) and then is connected with the mounting hole of the pump body (11) through a sealing ring (12) and a check ring (13), and the oil filter (10) is mounted at the joint between the pump sleeve (1) and the plunger (9) and covers the oil inlet.
2. The plunger pump structure of the automobile brake system according to claim 1, wherein:
the reciprocating driving mechanism comprises an eccentric bearing (14) and a motor, the upper end of a plunger (9) in a pump body (11) is connected with the motor through the eccentric bearing (14), the motor is positioned in the pump body (11) on the side of the eccentric bearing (14), the motor rotates to drive the eccentric bearing (14) to rotate, so that the plunger (9) is driven to reciprocate in a hole of the pump body (11) through a similar cam structure, and the reciprocating direction of the plunger (9) is along the radial direction of the eccentric bearing (14).
3. The plunger pump structure of the automobile brake system according to claim 1, wherein:
the pump sleeve (1) is characterized in that the circumferential surface of the end part of the lower end of the pump sleeve (1) is in interference fit with the inner wall of the pump body (11), and the circumferential surface of the middle part of the pump sleeve is in clearance fit with the inner wall of the pump body (11) by steps.
4. The plunger pump structure of the automobile brake system according to claim 1, wherein:
the outer peripheral surface of the plug (4) and the inner hole of the pump sleeve (1) are in interference fit, and the conical surface of the hole wall at the lower end of the communicating hole of the plug (4) is a one-way sealing conical surface with a conical angle of 90 degrees.
5. The plunger pump structure of the automobile brake system according to claim 1, wherein:
and an annular positioning boss is arranged around the upper hole end face of the communicating hole of the plug (4), and the lower end of the check valve spring II (5) is sleeved and limited on the peripheral side face of the annular positioning boss.
6. The plunger pump structure of the automobile brake system according to claim 1, wherein:
the sealing ring (8) is made of high polymer materials, and the friction coefficient between the high polymer materials of the sealing ring (8) and metal is lower than that between rubber and metal.
7. The plunger pump structure of the automobile brake system according to claim 1, wherein:
sealing ring (8) adopt whole injection moulding, and sealing ring (8) be equipped with the sealing lip limit with reset spring complex lower terminal surface, sealing ring (8) are being equipped with along a plurality of recesses of circumference interval arrangement with plunger (9) complex up end simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021031804.5U CN213039408U (en) | 2020-06-08 | 2020-06-08 | Plunger pump structure of automobile braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021031804.5U CN213039408U (en) | 2020-06-08 | 2020-06-08 | Plunger pump structure of automobile braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213039408U true CN213039408U (en) | 2021-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021031804.5U Active CN213039408U (en) | 2020-06-08 | 2020-06-08 | Plunger pump structure of automobile braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213039408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143096A (en) * | 2022-09-06 | 2022-10-04 | 万向钱潮股份公司 | Plunger pump for automotive electronics stable control system |
-
2020
- 2020-06-08 CN CN202021031804.5U patent/CN213039408U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143096A (en) * | 2022-09-06 | 2022-10-04 | 万向钱潮股份公司 | Plunger pump for automotive electronics stable control system |
| CN115143096B (en) * | 2022-09-06 | 2022-12-02 | 万向钱潮股份公司 | Plunger pump for automotive electronics stable control system |
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