CN210318272U - Main pump piston of hydraulic brake - Google Patents
Main pump piston of hydraulic brake Download PDFInfo
- Publication number
- CN210318272U CN210318272U CN201921030089.0U CN201921030089U CN210318272U CN 210318272 U CN210318272 U CN 210318272U CN 201921030089 U CN201921030089 U CN 201921030089U CN 210318272 U CN210318272 U CN 210318272U
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- CN
- China
- Prior art keywords
- main pump
- piston
- hydraulic brake
- piston body
- pump piston
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of the stopper and specifically relates to a hydraulic brake main pump piston. The utility model provides a following technical scheme: the utility model provides a hydraulic brake main pump piston, includes the piston body, the piston body sets up to hourglass form, the axial both ends of piston body all are provided with the seal table, seal table department is equipped with sealing device, sealing device includes hard sealing member and the soft sealing member of a plurality of crisscross settings, hard sealing member is equipped with conflict portion for setting up the other end in seal table one end, soft sealing member is equipped with the sealed shirt rim that can turn over for setting up the other end in seal table one end. The utility model provides a sealing device age easily and influence its sealed effect's problem.
Description
Technical Field
The utility model belongs to the technical field of the stopper and specifically relates to a hydraulic brake main pump piston.
Background
At present, a hydraulic brake mainly comprises a brake disc, a wheel cylinder assembly (namely a brake caliper), a main pump assembly and an oil pipe assembly, wherein the brake disc is exposed in the air and rotates at a high speed, so that the heat dissipation effect is good; the braking performance is stable; the brake disc rotates along with the wheel and throws water or mud out, so that the water recovery performance is better; the brake performance is stable, and the driving safety is greatly improved; the service life is long, no noise is generated during braking, and the replacement is convenient. The main pump assembly drives a main pump piston to move by a piston push rod to realize the flowing of hydraulic oil, and then the main pump assembly enters and exits the branch pump assembly through the oil pipe assembly to realize the braking of the vehicle.
The main pump piston is arranged in the main pump body and is matched with the main pump body to form a hydraulic cavity for containing hydraulic oil, and a front leather cup and a rear leather cup for preventing the hydraulic oil from leaking are mounted on the main pump piston. However, the front leather cup and the rear leather cup may age after being soaked in hydraulic oil for a long time, and the sealing effect of the leather cups is affected.
Disclosure of Invention
To the problem that exists among the prior art, the utility model provides a hydraulic brake main pump piston has solved the easy ageing problem that influences its sealed effect of sealing device.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a hydraulic brake main pump piston, includes the piston body, the piston body sets up to hourglass form, the axial both ends of piston body all are provided with the seal table, seal table department is equipped with sealing device, sealing device includes hard sealing member and the soft sealing member of a plurality of crisscross settings, hard sealing member is equipped with conflict portion for setting up the other end in seal table one end, soft sealing member is equipped with the sealed shirt rim that can turn over for setting up the other end in seal table one end.
By adopting the technical scheme, the hard sealing elements and the soft sealing elements in the sealing device are arranged in a staggered manner, the hard sealing elements and the soft sealing elements act together to achieve the effect of multiple sealing, and the hard sealing elements can ensure the sealing reliability after the soft sealing elements are aged; in addition, the piston body is arranged to be hourglass-shaped, so that the piston body is only contacted with the main pump body through the sealing table, the contact area is reduced, and the movement of the main pump piston is facilitated.
Further, the piston body comprises two trapezoidal connecting pieces, one of the connecting pieces is provided with a connecting block, the other connecting piece is provided with a connecting groove, and the connecting block and the connecting groove are provided with threads and are connected in a thread fit mode.
Adopt above-mentioned technical scheme, the piston body is formed by two connecting piece combinations, and simple structure, processing of being convenient for have reduced the degree of difficulty of processing to improve machining efficiency, two connecting pieces are connected through the screw-thread fit of connecting block with the spread groove moreover, simple structure, simple to operate.
Furthermore, a sealing ring is arranged between the connecting pieces.
By adopting the technical scheme, the connecting structure capable of protecting the connecting block and the connecting groove is arranged, and the situation that the matching connection between the connecting pieces is influenced by entering of hydraulic oil and dust is avoided.
Furthermore, an installation groove for installing the sealing device is formed in the sealing table.
By adopting the technical scheme, the sealing device can be conveniently installed, the installation is more reliable, and the sealing device is not easy to fall off.
Furthermore, one end of the piston body is provided with a spring groove.
Adopt above-mentioned technical scheme, the one end of piston body need be inconsistent with the return spring in the main pump assembly to return spring makes the piston body reset, and the setting up of spring groove can make return spring pass through the spring groove and link to each other with the piston body, makes things convenient for return spring's connection.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an installation schematic diagram of the present invention.
Detailed Description
The following will further describe the embodiments of the present invention with reference to the drawings and examples.
A hydraulic brake main pump piston as shown in fig. 1, including piston body 1, piston body 1 sets up to hourglass form, piston body 1's axial both ends all are provided with seal platform 2, seal platform 2 department is equipped with sealing device 3, sealing device 3 includes a plurality of hard sealing member 5 and the soft sealing member 4 of crisscross setting, hard sealing member 5 is equipped with conflict portion 7 for the other end that sets up in seal platform 2 one end, soft sealing member 4 is equipped with the sealed shirt rim 6 that can turn over for the other end that sets up in seal platform 2 one end. Hard sealing elements 5 and soft sealing elements 4 in the sealing device 3 are arranged in a staggered mode, the hard sealing elements 5 and the soft sealing elements 4 act together to achieve the effect of multiple sealing, when the soft sealing elements 4 are aged, the hard sealing elements 5 can ensure the sealing reliability, wherein the hard sealing elements 5 are provided with abutting parts 7 capable of being in contact with the main pump body 14 to achieve the effect of sealing with the main pump body 14, the soft sealing elements 4 are arranged in an abutting mode against the hard sealing elements 5, the soft sealing elements 4 are provided with sealing skirt edges 6, the sealing skirt edges 6 can be extruded at the abutting parts 7 of the hard sealing elements 5 under the pressure effect of hydraulic oil, the sealing skirt edges 6 are enabled to be kept in contact with the main pump body 14, and therefore the main pump piston and the main pump body; in addition, the piston body 1 is arranged to be hourglass-shaped, so that the piston body 1 is only contacted with the main pump body 14 through the sealing table 2, the contact area is reduced, and the movement of the main pump piston is facilitated.
Two or more hard seals 5 and two or more soft seals 4 are provided, respectively. In the present embodiment, three hard seals 5 and three soft seals 4 are provided.
The contact part 7 is arranged to be sharp-edged, can be tightly attached to the main pump body 14, is good in sealing effect, can reduce friction with the main pump body 14, and facilitates movement of a main pump piston.
The piston body 1 comprises two trapezoidal connecting pieces 8, wherein one connecting piece 8 is provided with a connecting block 9, the other connecting piece 8 is provided with a connecting groove 10, and the connecting block 9 and the connecting groove 10 are provided with threads and are connected in a thread fit mode. Piston body 1 is formed by two connecting pieces 8 combinations, and simple structure, processing of being convenient for have reduced the degree of difficulty of processing to improve machining efficiency, two connecting pieces 8 are connected through the screw-thread fit of connecting block 9 with spread groove 10 moreover, simple structure, simple to operate.
And a sealing ring 11 is arranged between the connecting pieces 8. The connecting structure capable of protecting the connecting block 9 and the connecting groove 10 is arranged in this way, and the situation that the matching connection between the connecting pieces 8 is influenced due to the entering of hydraulic oil and dust is avoided.
The sealing table 2 is provided with an installation groove 12 for installing the sealing device 3. The arrangement facilitates the installation of the sealing device 3, and the installation is more reliable and is not easy to fall off.
One end of the piston body 1 is provided with a spring groove 13. One end of the piston body 1 needs to be abutted against a return spring 17 in a main pump assembly, so that the return spring 17 enables the piston body 1 to reset, and the arrangement of the spring groove 13 enables the return spring 17 to be connected with the piston body 1 through the spring groove 13, so that the return spring 17 is convenient to connect.
As shown in fig. 2, the main pump assembly of the hydraulic brake includes a main pump body 14, an oil inlet bolt 15, a piston push rod 16 and a main pump piston, one end of the main pump piston is connected to the piston push rod 16, the other end of the main pump piston is connected to the inside of the main pump body 14 through a return spring 17 and a return spring base 18, one end of the main pump piston 16 corresponding to the return spring base 18 is provided with a spring groove 13 which can be connected to the return spring 17, a main pump body small hole 19 is formed in the main pump body 14 in front of the main pump piston 16, and the main pump body small hole 19 is communicated with the oil inlet bolt 15.
When the vehicle is not braked, the hydraulic cavity 20 is communicated with the oil inlet bolt 15, the pressure in the hydraulic cavity 20 is normal pressure, and a braking system does not generate braking force. When the vehicle needs to be braked, the piston push rod 16 pushes the main pump piston to move forwards (leftwards), and after the main pump piston passes through the position of the small hole 19 of the main pump body, the hydraulic cavity 20 forms a closed space; as the main pump piston continues to move forward, the pressure in the hydraulic cavity 20 is increased and transmitted to the sub-pump assembly of the brake through the oil pipe assembly, and the brake system generates braking force. After braking is finished, the main pump piston is returned by utilizing the characteristic of the return spring 17, and after the main pump piston leaves the small hole 19 of the main pump body rightwards, the hydraulic cavity 20 is communicated with the oil inlet bolt 15, the pressure in the hydraulic cavity 20 is converted into normal pressure, so that braking is relieved, and the vehicle continues to run.
Claims (5)
1. The utility model provides a hydraulic brake main pump piston, includes the piston body, its characterized in that: the piston body sets up to hourglass form, the axial both ends of piston body all are provided with the seal table, seal table department is equipped with sealing device, sealing device includes a plurality of crisscross hard seal spare and the soft seal spare that sets up, hard seal spare is equipped with conflict portion for the other end that sets up in seal table one end, soft seal spare is equipped with the sealed shirt rim that can turn over for the other end that sets up in seal table one end.
2. The hydraulic brake main pump piston of claim 1, wherein: the piston body comprises two trapezoidal connecting pieces, wherein one connecting piece is provided with a connecting block, the other connecting piece is provided with a connecting groove, and the connecting block and the connecting groove are provided with threads and are connected in a thread fit mode.
3. The hydraulic brake main pump piston of claim 2, wherein: and a sealing ring is arranged between the connecting pieces.
4. The hydraulic brake main pump piston of claim 1, or 2 or 3, wherein: and the sealing table is provided with a mounting groove for mounting the sealing device.
5. The hydraulic brake main pump piston of claim 1, wherein: and one end of the piston body is provided with a spring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921030089.0U CN210318272U (en) | 2019-07-03 | 2019-07-03 | Main pump piston of hydraulic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921030089.0U CN210318272U (en) | 2019-07-03 | 2019-07-03 | Main pump piston of hydraulic brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318272U true CN210318272U (en) | 2020-04-14 |
Family
ID=70148440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921030089.0U Expired - Fee Related CN210318272U (en) | 2019-07-03 | 2019-07-03 | Main pump piston of hydraulic brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318272U (en) |
-
2019
- 2019-07-03 CN CN201921030089.0U patent/CN210318272U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 Termination date: 20210703 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |