CN103195849A - Drum-type brake of gas cap oil integrated pump for automobile - Google Patents
Drum-type brake of gas cap oil integrated pump for automobile Download PDFInfo
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- CN103195849A CN103195849A CN2013101458065A CN201310145806A CN103195849A CN 103195849 A CN103195849 A CN 103195849A CN 2013101458065 A CN2013101458065 A CN 2013101458065A CN 201310145806 A CN201310145806 A CN 201310145806A CN 103195849 A CN103195849 A CN 103195849A
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- brake
- oil
- drum
- pneumatic jack
- integrated pump
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Abstract
The invention discloses a drum-type brake of a gas cap oil integrated pump for an automobile. The drum-type brake disclosed by the invention comprises a brake base plate, wherein two brake belt friction lining assemblies are symmetrically mounted on the brake base plate; driving ends of the brake belt friction lining assemblies are contacted to two secondary pistons of the gas cap oil integrated pump via a roller; and a brake gas chamber is arranged at the other end of the gas cap oil integrated pump. The action processes are as follows: a pushing rod in the brake gas chamber is directly acted on a primary piston of the gas cap oil integrated pump by force; high pressure is generated and used for driving two secondary pistons of the gas cap oil integrated pump to push the roller; and the roller is directly acted on the brake belt friction lining assemblies, so that the brake belt friction lining assemblies are opened, the brake drum is pressed and the brake function is achieved. The drum-type brake of the gas cap oil integrated pump for the automobile disclosed by the invention has the advantages of being simple in structure, high in brake force output efficiency, saving gas consumption, saving energy and reducing the volume of the brake gas chamber. Compared with a hydraulic pressure drum-type brake, as no hydraulic pressure pipeline is arranged, the defect of forming bubbles in the hydraulic pressure pipeline is overcome, so that the drum-type brake of the gas cap oil integrated pump for the automobile disclosed by the invention is more stable in the brake performance.
Description
Technical field
The present invention relates to auto parts and components, i.e. a kind of automobile fit pump drum brake of pneumatic jack oil.
Background technique
In current domestic widely used cam drum type brake and the hydraulic drum brake, cam drum type brake generally is made up of component such as braking bottom board, brake shoe band friction facing assembly, return spring, camshaft, adjustment arm, brake chambers; Hydraulic drum brake generally is made up of parts such as wheel cylinder assembly, floor pan assembly, brake shoe assembly, left and right gap adjusting device assemblies.These two types of breaks are configured in respectively in large vehicle, car and the middle-size and small-size vehicle.
There is following shortcoming in S-cam drum brake main:
S-cam drum brake structure relative complex, because the shape particularity of S-cam head, the foozle of its degree of symmetry, mounting position degree error cause quality problems such as braking deviation, return lag behind, dawdle.
The S-cam drum brake requires the spatial position big, and workpiece and component are many, makes troubles for the layout on car load chassis.
The S-cam drum brake, owing to be mechanically operated structural feature, the part of demand is also more, and the gross mass of whole break is strengthened, the corresponding quality that increases car load has increased energy consumption, makes the also corresponding increase of manufacturing cost of whole break.
There is following shortcoming in hydraulic drum brake main:
After wheel cylinder and oil pipe excessively were heated, the vaporization of part brake fluid formed bubble in pipeline, had a strong impact on the fluid power transmission, and braking system usefulness is reduced, even total failure.
Hydraulic drum brake oil pipe line joint is too much, and the probability of leakage of oil is big, and driving error is big.
Summary of the invention
In order to overcome the shortcoming of S-cam drum brake and hydraulic drum brake, the invention provides a kind of automobile fit pump drum brake of pneumatic jack oil.
This automobile fit pump drum brake of pneumatic jack oil, comprise braking bottom board, on braking bottom board, symmetry two brake shoe band friction facing assemblies are installed, it is characterized in that, drive end at brake shoe band friction facing assembly contacts by two sub-pistons of roller with the fit pump of pneumatic jack oil, and the other end of the fit pump of pneumatic jack oil has brake chamber.
Course of action: the push rod in the brake chamber firmly acts directly on the main piston of the fit pump of pneumatic jack oil, two sub-pistons that produce the fit pump of high drive pneumatic jack oil promote roller, roller acts directly on the brake shoe band friction facing assembly, brake shoe band friction facing assembly is opened, compress brake drum, reach braking function.The drum brake compact structure of the fit pump of this pneumatic jack oil, braking force delivery efficiency height.
Advantage of the present invention
:
1. the brake chamber area with respect to the cam drum type brake of equal braking moment reduces, and saves gas, and has namely saved energy, and has reduced the volume of brake chamber;
2. reduced component such as adjustment arm, support, weight has also alleviated, and used component are few, reduced manufacturing cost;
3. compact structure of the present invention, the size that takes up room is little, allows the vehicle bridge design is better arranges.
4. it is too much to solve hydraulic drum brake hydraulic pipe line joint, reduces the probability of leakage of oil, and the power transmission error is little.
With respect to hydraulic drum brake owing to there is not hydraulic pipe line, overcome the shortcoming that in hydraulic pipe line, forms bubble, make braking ability more stable.
6. pneumatic jack oil drum brake is when automobile brake, two sub-pistons can be according to stressing conditions free adjustment extrusion, remedied the assembling resultant error of parts such as braking bottom board, hoof assembly, make area of contact maximization and the equalization of two brake shoe upper friction plates and brake drum, suppressed braking deviation.
Description of drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is the A-A sectional view of Fig. 1 of the present invention
Fig. 3 is the fit pump cut-away view of pneumatic jack oil of the present invention
Among the figure: 1, sub-piston, 2, roller, 3, fixing spring, 4, braking bottom board, 5, brake shoe band friction facing assembly, 6, the fit pump of pneumatic jack oil, 7, brake chamber, 8, the fit pump cylinder of pneumatic jack oil, 9, oil storage cup, 10, minimum liquid measure alarm switch, 11, oil inlet hole, 12, the compensation oilhole, 13, bleed screw, 14, back belt, 15, main piston, 16, preceding apron, 17, piston return spring, 18, return spring, 19, shoe plate pin, 20, the hyperbaric chamber, 21, push rod, 22, pallet, 23, leather cup.
Embodiment
Below in conjunction with accompanying drawing being described as follows patent of the present invention:
Referring to Fig. 1, Fig. 2, at braking bottom board 4 the fit pump 6 of pneumatic jack oil is arranged fixedly, two sub-pistons 1 contact for floating with roller 2 and brake shoe band friction facing assembly 5 about on the fit pump 6 of pneumatic jack oil, the supported end of two brake shoe band friction facing assemblies 5 is stuck on the shoe plate pin 19, and is provided with the fixing spring 3 that connects shoe plate pin 19 and brake shoe band friction facing assembly 5.
All have the R groove on sub-piston 1 and brake shoe band friction facing assembly 5 movable ends, roller 2 floats and is clipped in the R groove of sub-piston 1 and the movable end of brake shoe band friction facing assembly 5.
The supported end of brake shoe band friction facing assembly 5 also adopts to float with shoe plate pin 19 and contacts, supported end at two brake shoe band friction facing assemblies 5 is provided with the fixing spring 3 that connects brake shoe band friction facing assembly 5 and shoe plate pin 19, guarantees accurately location of brake shoe band friction facing assembly 5.
Shown in Figure 3, the hyperbaric chamber 20 that axial oil duct is arranged in the fit pump cylinder 8 of pneumatic jack oil, oil pocket between hyperbaric chamber 20 and two sub-pistons 1 communicates, 20 back, hyperbaric chamber are piston return spring 17 and main piston 15, there is bleed screw 13 piston return spring 17 fronts, apron 16 and back belt 14 before be equipped with main piston 15 front and back, on the cylinder cap of the fit pump 6 of pneumatic jack oil brake chamber 7 is installed, push rod 21 is arranged in the brake chamber 7, push rod 21 1 ends are connected with main piston 15, push rod 21 the other ends are fixed on the pallet 22 in the leather cup 23, and leather cup 23 and high-pressure air source are connected; Stroke position at main piston 15 is equipped with oil storage cup 9, there are oil inlet hole 11, compensation oilhole 12 and the fit pump cylinder 8 of pneumatic jack oil to communicate on the oil storage cup 9, minimum liquid measure alarm switch 10 also is installed on the oil storage cup 9, the power of the push rod 21 during braking in the brake chamber acts directly on the main piston 15 of the fit pump 6 of pneumatic jack oil, produce high pressure, drive two sub-pistons 1 and promote roller 2, roller 2 acts directly on the brake shoe band friction facing assembly 5, brake shoe band friction facing assembly 5 is opened, compress brake drum, reach braking function.When discharging brake petal, back pressure cancellation is removed in braking, and main piston 15 is got back to initial position under the effect of piston return spring 17, and sub-piston 1 is return thereupon also.Brake shoe band friction facing assembly 5 is got back to original position under the pulling force effect of return spring 18.
The present invention have make simple, compact structure, advantage such as braking ability is reliable, and cost is low, and driving error is little.Plunger type air-operated hydraulic brake wheel cylinder has been cancelled the higher self-adjusting application of expense, thereby has optimized structure, has saved cost of production again.
Claims (3)
1. automobile is with the fit pump drum brake of pneumatic jack oil, comprise braking bottom board, on braking bottom board, symmetry two brake shoe band friction facing assemblies are installed, it is characterized in that, drive end at brake shoe band friction facing assembly contacts by two sub-pistons of roller with the fit pump of pneumatic jack oil, and the other end of the fit pump of pneumatic jack oil has brake chamber.
2. automobile according to claim 1 is with the fit pump drum brake of pneumatic jack oil, it is characterized in that, all have the R groove on sub-piston and brake shoe band friction facing assembly movable end, roller floats in the R groove of the movable end be clipped in sub-piston and brake shoe band friction facing assembly.
3. automobile according to claim 1 is with the fit pump drum brake of pneumatic jack oil, it is characterized in that, the hyperbaric chamber that axial oil duct is arranged in the fit pump cylinder of pneumatic jack oil, oil pocket between hyperbaric chamber and two sub-pistons communicates, the back, hyperbaric chamber is piston return spring and main piston, there is bleed screw the piston return spring front, apron and back belt before being equipped with before and after the main piston, on the cylinder cap of the fit pump of pneumatic jack oil brake chamber is installed, push rod is arranged in the brake chamber, push rod one end is connected with main piston, and the push rod the other end is fixed on the pallet in the leather cup, and leather cup and high-pressure air source are connected; Stroke position at main piston is equipped with oil storage cup, has oil inlet hole, compensation oilhole and the fit pump cylinder of pneumatic jack oil to communicate on the oil storage cup, and minimum liquid measure alarm switch also is installed on the oil storage cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310145806.5A CN103195849B (en) | 2013-04-25 | 2013-04-25 | The automobile fit pump drum brake of gas cap oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310145806.5A CN103195849B (en) | 2013-04-25 | 2013-04-25 | The automobile fit pump drum brake of gas cap oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195849A true CN103195849A (en) | 2013-07-10 |
| CN103195849B CN103195849B (en) | 2015-08-26 |
Family
ID=48718582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310145806.5A Expired - Fee Related CN103195849B (en) | 2013-04-25 | 2013-04-25 | The automobile fit pump drum brake of gas cap oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103195849B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3340968A (en) * | 1964-02-10 | 1967-09-12 | Ferodo Sa | Automotive vehicle brake system |
| US4266640A (en) * | 1979-07-20 | 1981-05-12 | The Bendix Corporation | Wheel cylinder |
| CN1584356A (en) * | 2004-06-11 | 2005-02-23 | 山东交通学院 | Roller-type power-increasing brake of wheel |
| CN2761909Y (en) * | 2004-10-05 | 2006-03-01 | 湖南汽车车桥厂 | Automobile brake |
| CN201484399U (en) * | 2009-06-29 | 2010-05-26 | 武汉创想未来汽车设计开发有限公司 | Gas cap liquid type driving brake system |
| US20110308903A1 (en) * | 2010-06-18 | 2011-12-22 | Chuo Hatsujo Kabushiki Kaisha | Cable-operated device and parking brake containing the same |
-
2013
- 2013-04-25 CN CN201310145806.5A patent/CN103195849B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3340968A (en) * | 1964-02-10 | 1967-09-12 | Ferodo Sa | Automotive vehicle brake system |
| US4266640A (en) * | 1979-07-20 | 1981-05-12 | The Bendix Corporation | Wheel cylinder |
| CN1584356A (en) * | 2004-06-11 | 2005-02-23 | 山东交通学院 | Roller-type power-increasing brake of wheel |
| CN2761909Y (en) * | 2004-10-05 | 2006-03-01 | 湖南汽车车桥厂 | Automobile brake |
| CN201484399U (en) * | 2009-06-29 | 2010-05-26 | 武汉创想未来汽车设计开发有限公司 | Gas cap liquid type driving brake system |
| US20110308903A1 (en) * | 2010-06-18 | 2011-12-22 | Chuo Hatsujo Kabushiki Kaisha | Cable-operated device and parking brake containing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103195849B (en) | 2015-08-26 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20160425 |