CN2436380Y - Automatic pressure releasing screw - Google Patents
Automatic pressure releasing screw Download PDFInfo
- Publication number
- CN2436380Y CN2436380Y CN 00241247 CN00241247U CN2436380Y CN 2436380 Y CN2436380 Y CN 2436380Y CN 00241247 CN00241247 CN 00241247 CN 00241247 U CN00241247 U CN 00241247U CN 2436380 Y CN2436380 Y CN 2436380Y
- Authority
- CN
- China
- Prior art keywords
- pressure releasing
- steel ball
- screw
- releasing screw
- automatic pressure
- Prior art date
- 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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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model relates to an automatic pressure releasing screw of an auto brake system. The utility model is connected with a wheel cylinder by screws, one head of an air venting cavity is provided with a steel ball and a spring, and the steel ball is propped on the spring and an oil cavity opening or an air vent. When the pressure releasing screw is unscrewed, an oil pipeline is charged with positive pressure, the steel ball is pushed away, and the air exhaust is synchronous. The heavy labor of the operation of the existing pressure releasing screw by two persons is overcome, and the utility model has the advantage of easy operation and is favorable for realizing the job standardization on line assembly.
Description
The utility model relates to the device of brake system of car discharging gas, specifically is the Automatic pressure releasing screw in the system oil-way.
The air bleed screw of using in the brake system of car oil circuit is threaded with cylinder body, manually unscrewing screw exits, because the oil pipe line of screw thread exhaust and brake system is long, when operation, a people does not stop in the operator's compartment steps on brake pedal, and simultaneously, the people unscrews, tightens air bleed screw repeatedly at the bottom of car in addition, two people cooperate repeatedly, the gas in the oil circuit could be drained.In addition, on main engine plants' fitting line, the filling of braking liquid and system exhaust are pretty troublesome things, and the adjusting work amount is bigger, and is difficult for draining gas.
The utility model is in order to solve the big difficult problem of adjusting work amount on the complicated and fitting line of brake system oil pipe line bleeding, and design provides a kind of Automatic pressure releasing screw of easy and simple to handle and erecting work normalizing operation.
For achieving the above object, design concept of the present utility model, adopt following technical scheme: it includes screw, steel ball and spring, centre at screw is processed with venting cavity, be provided with spring and steel ball at venting cavity one end, steel ball is top pressure spring and the oil pocket or the cooresponding garden of the venting cavity in the Automatic pressure releasing screw mouth that lead in the wheel cylinder respectively, and the Automatic pressure releasing screw screw thread is connected in the wheel cylinder.
The utility model is compared with existing air bleed screw, have reasonable technique effect: when unscrewing Automatic pressure releasing screw, system's positive-pressure filling, steel ball is urged, realize synchronous exhaust, after system's filling and exhaust are finished, tighten air bleed screw, by the elastic force effect, make the steel ball sealing oil pocket, overcome the complexity discharging gas program of the necessary two people operation of existing air bleed screw, reduced labor intensity simple operation; Realize system's positive-pressure filling on the main frame fitting line, exhaust synchronously helps realizing job standardization.
Below, with reference to the accompanying drawings, description in conjunction with the embodiments, details are as follows to technology contents of the present utility model.
Fig. 1 is the utility model topology view.
Fig. 2 is another example structure view of the utility model.
The Automatic pressure releasing screw 3 wheel cylinder wheel cylinder 6 that is threaded, the end item of the venting cavity 4 in the Automatic pressure releasing screw 3 has spring 2 and steel ball 1, the oil pocket mouth and 4 movable cooperations of the ventilation accent in the Automatic pressure releasing screw 3 of steel ball 1 and wheel cylinder wheel cylinder 6, as shown in Figure 1.When the utility model design is unscrewed the 0.5-2 circle at Automatic pressure releasing screw 3, liquid in the brake system (oil) is pressed when being not less than 0.6MPa, hydraulic pressure makes steel ball 1 overcome the elastic force of spring 2 in the system, leave the oil pocket mouth, air in the oil pipe line is discharged through in the venting cavity of Automatic pressure releasing screw 3, less than 0.6MPa the time, steel ball 1 is in the effect of spring 2 elastic force, and the oil pocket mouth in the sealing wheel cylinder 6 is because oil pipe line is longer, in the existence and braking liquid that air is alternate, brake pedal is stepped in circulation several times, and just the air in the discharge oil circuit that can be interrupted is tightened Automatic pressure releasing screw 3 subsequently, steel ball 1 under spring 2 effect, the Seal Oil accent.
Embodiment in addition of the present utility model as shown in Figure 2, steel ball 1 and spring 2 are assemblied in the head end of Automatic pressure releasing screw 3 venting cavities 4, steel ball 1 cooperates with the garden mouth of ventilation accent 4 head ends of Automatic pressure releasing screw 3 is movable, bent angle shape is processed in the other end of venting cavity 4, the oil pocket mouth that leads to wheel cylinder 6, the interface that Automatic pressure releasing screw 3 is threaded with wheel cylinder is equipped with seal ring 5, and system oil-way positive-pressure filling, gas are just directly discharged from venting cavity 4.
Claims (1)
1, a kind of Automatic pressure releasing screw, include screw, steel ball and spring, it is characterized in that in the middle of the Automatic pressure releasing screw (3) venting cavity (4) being arranged, end at venting cavity (4) is provided with steel ball (1) and spring (2), and steel ball (1) is the oil pocket in top pressure spring (2) and the wheel cylinder (6) or the corresponding garden mouth of the venting cavity in the Automatic pressure releasing screw (4) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00241247 CN2436380Y (en) | 2000-07-13 | 2000-07-13 | Automatic pressure releasing screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00241247 CN2436380Y (en) | 2000-07-13 | 2000-07-13 | Automatic pressure releasing screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2436380Y true CN2436380Y (en) | 2001-06-27 |
Family
ID=33601756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00241247 Expired - Fee Related CN2436380Y (en) | 2000-07-13 | 2000-07-13 | Automatic pressure releasing screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2436380Y (en) |
-
2000
- 2000-07-13 CN CN 00241247 patent/CN2436380Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |