CN200948791Y - Vehicular dual circuit brake valve - Google Patents
Vehicular dual circuit brake valve Download PDFInfo
- Publication number
- CN200948791Y CN200948791Y CN 200620086465 CN200620086465U CN200948791Y CN 200948791 Y CN200948791 Y CN 200948791Y CN 200620086465 CN200620086465 CN 200620086465 CN 200620086465 U CN200620086465 U CN 200620086465U CN 200948791 Y CN200948791 Y CN 200948791Y
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- Prior art keywords
- piston
- main piston
- auxiliary piston
- pump body
- pressure
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- Expired - Fee Related
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Abstract
The utility model discloses a dual-line brake pump for vehicles, which comprises a pump body; the inner chamber of the pump body is of step structure and a first cylinder block and a second cylinder block are installed in the bump body; a main piston is fixed in the inner chamber of the first cylinder block and a first high-pressure chamber is driven by the main piston; a Y-shaped seal ring towards the first high-pressure oil chamber is mounted between the inner chamber of the first cylinder and the main piston; a compensating port is positioned on the main piston to communicate the first low-pressure chamber and the first high-pressure oil chamber when the device is in non-operating state. The compensating port can realize rapid fluid compensation to achieve oil pressure in the high-pressure chamber, thus creating stable brake pressure to perform good brake. The second pipeline can make the second high-pressure chamber create stable brake pressure to realize good brake effect. The Y-shaped seal ring has no relative friction with the cylinder block, which prolongs the service life of the seal ring and improves the sealing effect, thus facilitating the creation of brake power and realizing good brake effect.
Description
Technical field
The utility model relates to a kind of automobile-used brake pump.
Background technology
The present dual circuit automobile brake pump that exists, it comprises: the pump housing, the seal ring of pump housing oil pocket and interior dress thereof, oil pocket communicates with fluid storage compartment through compensation orifice, shrinkage distortion and vacuum oil suction principle when high pressure chest replenishes braking liquid and relies on the crank motion of seal ring fully, and the fluid infusion mode of this structure exists cylinder body and seal ring is easy to wear, and because of seal ring limited service life, and the braking liquid discharge capacity by the compensation orifice compensation is little, thereby causes brake-pressure low, and braking effect is undesirable.
Summary of the invention
Technical problem to be solved in the utility model provide a kind of can compensate braking liquid rapidly and the braking liquid discharge capacity is big, hydraulic pressure is high, good braking effect, a kind of automobile-used dual line braking pump that the wearing and tearing of seal ring and cylinder body are little.
For achieving the above object, the technical solution of the utility model is: automobile-used dual line braking pump, comprise the pump body, and described pump chamber body is step and first cylinder body is installed successively and second cylinder body;
The inner chamber of described first cylinder body is equipped with main piston, be provided with first low-pressure cavity between described first cylinder body lateral surface and the described pump chamber body, described first low-pressure cavity communicates with first fuel inlet fitting on being arranged on the pump body, producing first high-voltage oil cavity of braking force by described main piston communicates with first delivery valve on being arranged on the pump body, opening is installed towards first high-voltage oil cavity between described first inner chamber of cylinder block and the main piston " Y " the shape seal ring, described main piston body is provided with first compensation orifice that is communicated with first low-pressure cavity and first high-voltage oil cavity in off working state;
The inner chamber of described second cylinder body is equipped with auxiliary piston, be provided with second low-pressure cavity between described second cylinder body lateral surface and the described pump chamber body, described second low-pressure cavity communicates with second fuel inlet fitting on being arranged on the pump body, producing second high-voltage oil cavity of braking force by described auxiliary piston communicates with second delivery valve on being arranged on the pump body, opening is installed towards second high-voltage oil cavity between described second inner chamber of cylinder block and the auxiliary piston " Y " the shape seal ring, described auxiliary piston body is provided with second compensation orifice that is communicated with second low-pressure cavity and second high-voltage oil cavity in off working state;
One end of described auxiliary piston is positioned at first high-voltage oil cavity of described main piston, be provided with opening between the described auxiliary piston and second cylinder body towards first high-voltage oil cavity " Y " the shape seal ring, the described main piston and first cylinder body are equipped with opening towards first low-pressure cavity near atmosphere end " Y " the shape seal ring;
Be provided with retracing spring between described main piston and the auxiliary piston, also be provided with retracing spring between described auxiliary piston and the pump body, described auxiliary piston is positioned at the mobile inhibiting device that the first high-voltage oil cavity side is provided with main piston, and described pump body is positioned at the second high-voltage oil cavity side and also is provided with auxiliary piston and moves inhibiting device.
What the mobile inhibiting device of described main piston comprised the bottom perforate that is fixed on the auxiliary piston falls fixedly sliding sleeve of " U " shape, and head is positioned at the bolt that the described fixedly sliding sleeve and the other end and main piston are fixed; The mobile inhibiting device of described auxiliary piston comprise be fixed on the pump body and the bottom perforate fall fixedly sliding sleeve of " U " shape, head is positioned at the bolt that the described fixedly sliding sleeve and the other end and auxiliary piston are fixed.
Because adopt technique scheme, automobile-used dual line braking pump comprises the pump body, described pump chamber body is step and first cylinder body is installed successively and second cylinder body;
The inner chamber of described first cylinder body is equipped with main piston, be provided with first low-pressure cavity between described first cylinder body lateral surface and the described pump chamber body, described first low-pressure cavity communicates with first fuel inlet fitting on being arranged on the pump body, producing first high-voltage oil cavity of braking force by described main piston communicates with first delivery valve on being arranged on the pump body, opening is installed towards first high-voltage oil cavity between described first inner chamber of cylinder block and the main piston " Y " the shape seal ring, described main piston body is provided with first compensation orifice that is communicated with first low-pressure cavity and first high-voltage oil cavity in off working state;
The inner chamber of described second cylinder body is equipped with auxiliary piston, be provided with second low-pressure cavity between described second cylinder body lateral surface and the described pump chamber body, described second low-pressure cavity communicates with second fuel inlet fitting on being arranged on the pump body, producing second high-voltage oil cavity of braking force by described auxiliary piston communicates with second delivery valve on being arranged on the pump body, opening is installed towards second high-voltage oil cavity between described second inner chamber of cylinder block and the auxiliary piston " Y " the shape seal ring, described auxiliary piston body is provided with second compensation orifice that is communicated with second low-pressure cavity and second high-voltage oil cavity in off working state;
One end of described auxiliary piston is positioned at first high-voltage oil cavity of described main piston, be provided with opening between the described auxiliary piston and second cylinder body towards first high-voltage oil cavity " Y " the shape seal ring, the described main piston and first cylinder body are equipped with opening towards first low-pressure cavity near atmosphere end " Y " the shape seal ring;
Be provided with retracing spring between described main piston and the auxiliary piston, also be provided with retracing spring between described auxiliary piston and the pump body, described auxiliary piston is positioned at the mobile inhibiting device that the first high-voltage oil cavity side is provided with main piston, and described pump body is positioned at the second high-voltage oil cavity side and also is provided with auxiliary piston and moves inhibiting device.
Be provided with compensation orifice, therefore fluid infusion velocity is fast, during piston original position state, braking liquid enters two low-pressure cavity of pump body by fuel inlet fitting, compensation orifice by piston again, two high pressure chests of inflow pump body, two cavity pressures equate before and after this moment, when piston continues to move forward, compensation orifice enters " Y " during shape seal ring inboard, the oil circuit before and after cutting off between the chamber, ante-chamber begins to set up oil pressure, the ante-chamber high pressure oil is squeezed in the brake line through residual valve, flowline connection to subsea, up to being passed to brake wheel; Make first high pressure chest be difficult to create braking force if first pipeline is impaired, and when not having braking effect, second pipeline still can make second high pressure chest create stable brake-pressure, and play good braking effect.
After braking force was removed, retracing spring resetted rapidly, made the piston state that sets back, and then the pressure in low-pressure cavity and the high pressure chest equates, then braking is removed.
Another advantage of the present utility model is: what the mobile inhibiting device of described main piston comprised the bottom perforate that is fixed on the auxiliary piston falls fixedly sliding sleeve of " U " shape, and head is positioned at the bolt that the described fixedly sliding sleeve and the other end and main piston are fixed; The mobile inhibiting device of described auxiliary piston comprise be fixed on the pump body and the bottom perforate fall fixedly sliding sleeve of " U " shape, head is positioned at described fixedly sliding sleeve and the other end and the fixing bolt of auxiliary piston, this inhibiting device does not cause braking force excessive, and brake pump is damaged.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the left view of Fig. 1.
The specific embodiment
As shown in Figures 1 and 2, automobile-used dual line braking pump comprises pump body 1, and described pump body 1 inner chamber is step and first cylinder body 2 is installed successively and second cylinder body 3; The inner chamber of described first cylinder body 2 is equipped with main piston 4, be provided with first low-pressure cavity 5 between described first cylinder body, 2 lateral surfaces and described pump body 1 inner chamber, described first low-pressure cavity 5 communicates with first fuel inlet fitting 6 on being arranged on pump body 1, producing first high-voltage oil cavity 7 of braking forces by described main piston 4 communicates with first delivery valve 8 on being arranged on pump body 1, opening is installed towards first high-voltage oil cavity 7 between described first cylinder body, 2 inner chambers and the main piston 4 " Y " shape seal ring 13, described main piston 4 bodies are provided with first compensation orifice 9 that is communicated with first low-pressure cavity 5 and first high-voltage oil cavity 7 in off working state;
The inner chamber of described second cylinder body 3 is equipped with auxiliary piston 4 ', be provided with second low-pressure cavity 5 ' between described second cylinder body, 3 lateral surfaces and described pump body 1 inner chamber, described second low-pressure cavity 5 ' communicates with second fuel inlet fitting 6 ' on being arranged on pump body 1, producing second high-voltage oil cavity 7 ' of braking force by described auxiliary piston 4 ' communicates with second delivery valve 8 ' on being arranged on pump body 1, opening is installed towards second high-voltage oil cavity 7 ' between described second cylinder body, 3 inner chambers and the auxiliary piston 4 ' " Y " shape seal ring 13, described auxiliary piston 4 ' body is provided with second compensation orifice 9 ' that is communicated with second low-pressure cavity 5 ' and second high-voltage oil cavity 7 ' in off working state;
First compensation orifice 9, the setting of second compensation orifice 9 ', make fluid infusion velocity faster, during piston original position state, braking liquid enters two low-pressure cavity of pump body 1 by oil inlet pipe union, compensation orifice by piston again, two high pressure chests of inflow pump body 1, two cavity pressures equate before and after this moment, when piston continues to move forward, compensation orifice enters " Y " during shape seal ring 13 inboard, cut off the oil circuit between first high pressure chest 7 and second high pressure chest 7 ', first high pressure chest 7 begins to set up oil pressure, high pressure oil is squeezed in the brake line through the residual valve and first delivery valve 8, up to being passed to brake wheel; Make first high pressure chest 7 be difficult to create braking force if first pipeline is impaired and when not having braking effect, the second same pipeline still can make second high pressure chest 7 ' create stable brake-pressure, and play good braking effect;
One end of described auxiliary piston 4 ' is positioned at first high-voltage oil cavity 7 of described main piston 4, be provided with opening between the described auxiliary piston 4 ' and second cylinder body 3 towards first high-voltage oil cavity 7 " Y " shape seal ring 13, described main piston 4 and first cylinder body 2 are equipped with opening towards first low-pressure cavity 5 near atmosphere end " Y " shape seal ring 13; " Y " shape seal ring 13 and cylinder body 1 no relative friction, promptly prolonged its service life and sealing function, braking force is easily set up, and braking effect is good.
Be provided with retracing spring 10 between described main piston 4 and the auxiliary piston 4 ', also be provided with retracing spring 10 ' between described auxiliary piston 4 ' and the pump body 1, after braking force is removed, retracing spring 10 and 10 ' resets rapidly, make the piston state that sets back, then the pressure in low-pressure cavity and the high pressure chest equates, then braking is removed.Described auxiliary piston 4 ' is positioned at the mobile inhibiting device that first high-voltage oil cavity, 7 sides are provided with main piston 4, and described pump body 1 is positioned at second high-voltage oil cavity, 7 ' side and also is provided with auxiliary piston 4 ' the mobile inhibiting device.
What the mobile inhibiting device of described main piston 4 comprised the bottom perforate that is fixed on the auxiliary piston 4 ' falls fixedly sliding sleeve 11 of " U " shape, and head is positioned at the bolt 12 that the described fixedly sliding sleeve 11 and the other end and main piston 4 are fixed; The mobile inhibiting device of described auxiliary piston 4 ' comprise be fixed on the pump body 1 and the bottom perforate fall fixedly sliding sleeve 11 ' of " U " shape, head is positioned at the bolt 12 ' that the described fixedly sliding sleeve 11 ' and the other end and auxiliary piston 4 ' are fixed.
Claims (2)
1. automobile-used dual line braking pump, it comprises pump body (1), described pump body (1) inner chamber is step and first cylinder body (2) is installed successively and second cylinder body (3); It is characterized in that:
The inner chamber of described first cylinder body (2) is equipped with main piston (4), be provided with first low-pressure cavity (5) between described first cylinder body (2) lateral surface and described pump body (1) inner chamber, described first low-pressure cavity (5) communicates with first fuel inlet fitting (6) on being arranged on pump body (1), producing first high-voltage oil cavity (7) of braking force by described main piston (4) communicates with first delivery valve (8) on being arranged on pump body (1), opening is installed towards first high-voltage oil cavity (7) between described first cylinder body (2) inner chamber and the main piston (4) " Y " shape seal ring (13), described main piston (4) body is provided with first compensation orifice (9) that is communicated with first low-pressure cavity (5) and first high-voltage oil cavity (7) in off working state;
The inner chamber of described second cylinder body (3) is equipped with auxiliary piston (4 '), be provided with second low-pressure cavity (5 ') between described second cylinder body (3) lateral surface and described pump body (1) inner chamber, described second low-pressure cavity (5 ') communicates with second fuel inlet fitting (6 ') on being arranged on pump body (1), producing second high-voltage oil cavity (7 ') of braking force by described auxiliary piston (4 ') communicates with second delivery valve (8 ') on being arranged on pump body (1), opening is installed towards second high-voltage oil cavity (7 ') between described second cylinder body (3) inner chamber and the auxiliary piston (4 ') " Y " shape seal ring (13), described auxiliary piston (4 ') body is provided with second compensation orifice (9 ') that is communicated with second low-pressure cavity (5 ') and second high-voltage oil cavity (7 ') in off working state;
One end of described auxiliary piston (4 ') is positioned at first high-voltage oil cavity (7) of described main piston (4), be provided with opening between described auxiliary piston (4 ') and second cylinder body (3) towards first high-voltage oil cavity (7) " Y " shape seal ring (13), described main piston (4) and first cylinder body (2) are equipped with opening towards first low-pressure cavity (5) near atmosphere end " Y " shape seal ring (13);
Be provided with retracing spring (10) between described main piston (4) and the auxiliary piston (4 '), also be provided with retracing spring (10 ') between described auxiliary piston (4 ') and the pump body (1), described auxiliary piston (4 ') is positioned at the mobile inhibiting device that first high-voltage oil cavity (7) side is provided with main piston (4), and described pump body (1) is positioned at second high-voltage oil cavity (the 7 ') side and also is provided with the mobile inhibiting device of auxiliary piston (4 ').
2. automobile-used dual line braking pump as claimed in claim 1, it is characterized in that: what the mobile inhibiting device of described main piston (4) comprised the bottom perforate that is fixed on the auxiliary piston (4 ') falls fixedly sliding sleeve (11) of " U " shape, and head is positioned at the bolt (12) that the described fixedly sliding sleeve (11) and the other end and main piston (4) are fixed; The mobile inhibiting device of described auxiliary piston (4 ') comprise be fixed on that pump body (1) is gone up and the bottom perforate fall fixedly sliding sleeve (11 ') of " U " shape, head is positioned at the bolt (12 ') that the described fixedly sliding sleeve (11 ') and the other end and auxiliary piston (4 ') are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620086465 CN200948791Y (en) | 2006-07-05 | 2006-07-05 | Vehicular dual circuit brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620086465 CN200948791Y (en) | 2006-07-05 | 2006-07-05 | Vehicular dual circuit brake valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200948791Y true CN200948791Y (en) | 2007-09-19 |
Family
ID=38891332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620086465 Expired - Fee Related CN200948791Y (en) | 2006-07-05 | 2006-07-05 | Vehicular dual circuit brake valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200948791Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292088A (en) * | 2015-11-06 | 2016-02-03 | 芜湖稳乐制动***有限公司 | Self-pressurization type brake master pump assembly |
| CN113753005A (en) * | 2021-11-09 | 2021-12-07 | 杭州赛奇机械股份有限公司 | Brake master cylinder for new energy vehicle |
-
2006
- 2006-07-05 CN CN 200620086465 patent/CN200948791Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292088A (en) * | 2015-11-06 | 2016-02-03 | 芜湖稳乐制动***有限公司 | Self-pressurization type brake master pump assembly |
| CN113753005A (en) * | 2021-11-09 | 2021-12-07 | 杭州赛奇机械股份有限公司 | Brake master cylinder for new energy vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 |