CN216969619U - Structure for improving effectiveness of sealing ring of automobile brake power-assisted vacuum pump - Google Patents
Structure for improving effectiveness of sealing ring of automobile brake power-assisted vacuum pump Download PDFInfo
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- CN216969619U CN216969619U CN202123398273.0U CN202123398273U CN216969619U CN 216969619 U CN216969619 U CN 216969619U CN 202123398273 U CN202123398273 U CN 202123398273U CN 216969619 U CN216969619 U CN 216969619U
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- automobile brake
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Abstract
The utility model discloses a structure for improving effectiveness of a sealing ring of an automobile brake booster vacuum pump, and belongs to the technical field of vacuum pump sealing. Comprises a pump body and a rotor connected with the pump body; a chamfer part is formed at the top of the inner side wall of the rotor; the bottom of the chamfer part and the inner side wall form circular arc transition; the radius of the arc transition is 2-5 mm. According to the structure for improving the effectiveness of the sealing ring of the automobile brake power-assisted vacuum pump, the arc transition is formed at the bottom of the chamfer part on the inner side wall of the rotor, the sealing ring is guided through the chamfer part in the installation process and is compressed through the chamfer part, the risks of shearing and the like of the axial sealing ring in the installation process are effectively avoided, the effective service life of the sealing ring is prolonged, and the structure has the advantages of simple structure, reasonable design and easiness in manufacturing.
Description
Technical Field
The utility model belongs to the technical field of vacuum pump sealing, and particularly relates to a structure for improving the effectiveness of a sealing ring of an automobile brake booster vacuum pump.
Background
The automobile brake boosting vacuum pump is connected with the vacuum booster and used for extracting air in the vacuum booster and improving the vacuum degree of the vacuum booster, and according to the principle of the vacuum booster, the higher the vacuum degree level is, the larger the boosting is, and the larger the braking force is when a brake pedal is stepped on.
The vacuum pump sealing ring mounting hole structure in the prior art mainly guides for the chamfer, and the sealing ring is easy to shear and other sites at the root of the chamfer when being pressed in, and the end face sealing ring can be found by naked eyes, but when being axially sealed, the naked eyes can not be identified, so that the vacuum pump can leak oil and gas, and meanwhile, the stability of the sealing ring mounting structure is also optimized, so that the problem finally can cause the failure of the vacuum pump, the brake assisting force is reduced, and the potential safety hazard is caused.
Disclosure of Invention
In order to solve the above problems, the present invention adopts the following technical solutions.
A structure for improving the effectiveness of a sealing ring of an automobile brake booster vacuum pump comprises a pump body and a rotor connected with the pump body; a chamfer part is formed at the top of the inner side wall of the rotor;
the bottom of the chamfer part and the inner side wall are in arc transition.
Further, the radius of the arc transition is 2-5 mm.
Further, a mounting groove is formed in the flange surface of the pump body, an end sealing ring is mounted in the mounting groove, and the cross section of the end sealing ring is H-shaped.
Furthermore, the inner side surface and the outer side surface of the end sealing ring are both convexly provided with salient point parts at intervals.
Furthermore, an end sealing ring with an H-shaped cross section is also arranged on the end face of the pump body connected with the vacuum pump cover plate.
Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
(1) according to the structure for improving the effectiveness of the sealing ring of the automobile brake booster vacuum pump, the arc transition is formed at the bottom of the chamfer part on the inner side wall of the rotor, the sealing ring is guided by the chamfer part in the installation process and is compressed by the chamfer part, so that the risks of shearing and the like of the axial sealing ring in the installation process are effectively avoided, and the effective service life of the sealing ring is prolonged;
(2) according to the structure for improving the effectiveness of the sealing ring of the automobile brake booster vacuum pump, the radius of the arc transition part is reasonably arranged, so that the defects of insufficient compression amount or shearing and the like can be overcome in the installation process of the surface sealing ring, and the sealing effect is ensured;
(3) the structure for improving the effectiveness of the sealing ring of the automobile brake booster vacuum pump is provided with the end sealing ring with the H-shaped section, so that the static compression amount of the sealing ring can be increased, the static stability of the sealing ring is improved, the end sealing ring is prevented from falling off in the transportation or assembly process, and the effectiveness of a sealing structure is ensured;
(4) according to the structure for improving the effectiveness of the sealing ring of the automobile brake power-assisted vacuum pump, the convex point parts are formed on the inner side and the outer side of the end sealing ring and are in interference fit with the mounting groove, so that the sealing ring is further prevented from falling off, and the effectiveness of the sealing ring is improved;
(5) the utility model has simple structure, reasonable design and easy manufacture.
Drawings
FIG. 1 is a cross-sectional view of a vacuum pump employing the structure of the present invention;
FIG. 2 is a partial cross-sectional view of a rotor employing the structure of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a cross-sectional view of the end seal ring of the present invention;
in the figure:
1. a pump body; 10. mounting grooves; 11. vacuum pump cover plate
2. A rotor; 20. an inner sidewall; 21. chamfering the corner; 22. a rounded corner portion;
3. an oil filling pipe;
4. an axial seal ring;
5. an end seal ring; 50. a bump portion.
Detailed Description
The utility model is further described with reference to specific embodiments and the accompanying drawings.
Example 1
The structure for improving the effectiveness of the sealing ring of the automobile brake booster vacuum pump comprises a pump body 1 and a rotor 2 connected with the pump body 1; a chamfer part 21 is formed at the top of the inner side wall 20 of the rotor 2; the bottom of the chamfer part 21 and the inner side wall 20 form a circular arc transition.
As shown in fig. 1, the oil filling pipe 3 passes through the inner side wall 20 of the rotor 2, it is usually necessary to provide an axial sealing ring 4 on the side wall of the oil filling pipe 3 for axial sealing, when the axial sealing ring 4 is pressed into the rotor 2, a chamfered portion 21 is usually opened on the top of the inner side wall 20 of the rotor 2 for guiding the axial sealing ring 4, and when the axial sealing ring 4 is pressed into the rotor 2 and passes through the root of the chamfered portion 21, shearing is easily generated, which may cause the axial sealing ring 4 to be easily damaged and not be discovered in time, and may finally cause oil leakage, gas leakage and other faults of the vacuum pump, therefore, in this embodiment, the bottom of the chamfered portion 21 is chamfered 22, as shown in fig. 2 and 3, therefore, the bottom of the chamfered portion 21 and the inner side wall 20 of the rotor 2 form an arc transition, and therefore, when the axial sealing ring 4 is installed, guided by the chamfered portion 21 and compressed by the rounded portion 22, the risks such as shearing and the like of the axial sealing ring 4 in the installation process are effectively avoided, and the effective service life of the sealing ring is prolonged.
Example 2
The structure for improving the effectiveness of the sealing ring of the automobile brake power-assisted vacuum pump is further improved on the basis of the embodiment 1, and the radius of the arc transition is 2-5 mm.
The circular arc transition is the very big influence of fillet 22 radius size to installing of sealing washer, and the radius is too big can lead to the sealing washer installation in the compressive capacity not enough, influences sealed effect, and the shearing still easily appears when the sealing washer installation in the radius undersize, consequently, this embodiment with fillet 22 radius control at 2~5mm, can effectively avoid above-mentioned defect.
Example 3
The structure for improving the effectiveness of the sealing ring of the automobile brake power-assisted vacuum pump is further improved on the basis of the embodiment 2, the flange surface of the pump body 1 is provided with an installation groove 10, an end sealing ring 5 is installed in the installation groove 10, and the cross section of the end sealing ring 5 is in an H shape.
Also be equipped with tip sealing washer 5 on the vacuum pump body 1 and the engine cylinder lid complex flange face usually, current tip sealing washer 5 is O type usually, and the cross sectional shape is O type promptly, drops easily in the in-service use process, and this embodiment improves 5 structures of tip sealing washer, designs 5 cross sectional shapes of tip sealing washer for the H type, as shown in fig. 4, can increase the static compression volume of sealing washer from this, improve the static stability of sealing washer, avoid tip sealing washer 5 to drop in transportation or assembling process.
Example 4
The structure for improving the effectiveness of the sealing ring of the power-assisted vacuum pump for automobile braking of the embodiment is further improved on the basis of the embodiment 3, and convex points 50 are formed on the inner side surface and the outer side surface of the end sealing ring 5 at intervals in a protruding manner.
As shown in fig. 4, in the present embodiment, the protruding portions 50 are formed on the inner side surface and the outer side surface of the end portion sealing ring 5 at intervals, so that the protruding points on the inner side and the outer side of the end portion sealing ring 5 are in interference fit with the mounting groove 10, thereby further preventing the sealing ring from falling off and improving the effectiveness of the sealing ring.
Example 5
The structure for improving the effectiveness of the sealing ring of the automobile brake booster vacuum pump is further improved on the basis of embodiment 4, and the end face, connected with the vacuum pump cover plate 11, of the pump body 1 is also provided with the end sealing ring 5 with the H-shaped cross section.
The general sealing ring of the end face where the vacuum pump body 1 is connected with the vacuum pump cover plate 11 is also a section O-ring, in this embodiment, the sealing ring at this position is also an end sealing ring 5 with an H-shaped section, and salient point portions are formed on the inner side and the outer side, so that the effectiveness of the sealing ring structure at this position can be effectively improved.
The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides an improve structure of car brake helping hand vacuum pump sealing washer validity, includes the pump body (1) and rotor (2) be connected with the pump body (1), its characterized in that:
a chamfer part (21) is formed at the top of the inner side wall (20) of the rotor (2);
the bottom of the chamfer part (21) and the inner side wall (20) are in arc transition.
2. The structure for improving the effectiveness of the sealing ring of the automobile brake booster vacuum pump according to claim 1, characterized in that: the radius of the arc transition is 2-5 mm.
3. The structure for improving the effectiveness of the sealing ring of the automobile brake booster vacuum pump according to claim 2, is characterized in that: the flange face of the pump body (1) is formed with mounting groove (10), install tip sealing washer (5) in mounting groove (10), the cross-sectional shape of tip sealing washer (5) is the H type.
4. The structure for improving the effectiveness of the sealing ring of the automobile brake booster vacuum pump according to claim 3, characterized in that: the inner side surface and the outer side surface of the end sealing ring (5) are raised at intervals to form salient point parts (50).
5. The structure for improving the effectiveness of the sealing ring of the automobile brake booster vacuum pump according to claim 4, is characterized in that: an end sealing ring (5) with an H-shaped section is also arranged on the end face of the pump body (1) connected with the vacuum pump cover plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123398273.0U CN216969619U (en) | 2021-12-30 | 2021-12-30 | Structure for improving effectiveness of sealing ring of automobile brake power-assisted vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123398273.0U CN216969619U (en) | 2021-12-30 | 2021-12-30 | Structure for improving effectiveness of sealing ring of automobile brake power-assisted vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216969619U true CN216969619U (en) | 2022-07-15 |
Family
ID=82350389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123398273.0U Active CN216969619U (en) | 2021-12-30 | 2021-12-30 | Structure for improving effectiveness of sealing ring of automobile brake power-assisted vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216969619U (en) |
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2021
- 2021-12-30 CN CN202123398273.0U patent/CN216969619U/en active Active
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