BICAKCI IBRAHIM (TR)
| FR675244A | 1930-02-07 | |||
| DE1288463B | 1969-01-30 | |||
| US3822003A | 1974-07-02 | |||
| DE651974C | 1937-10-22 | |||
| US4380277A | 1983-04-19 | |||
| DE3001476A1 | 1980-10-23 | |||
| DE1575807A1 | 1970-10-22 |
| CLAIMS Claim 1. The invention is new brake system for light, medium and heavy weight vehicles and trailers, and characteristic of which is that it comprises of oval shaped special camshaft (1), autothermic push piston (2), helical gear bearing (3), screwed push piston (4), brake shoe with brake lining (5), return spring (6), fixing screw (7), push spring (8), helical gear special pin (9)· Claim 2. It is new brake system for light, medium and heavy weight vehicles and trailers according to the Claim 1, and characteristic of which is that it includes slot (10) that ensures movement of the piston (2) on autothermic push piston (2). Claim 3. It is new brake system for light, medium and heavy weight vehicles and trailers according to the Claim 1, and characteristic of which is that it includes helical gears (11) on the exterior surface of the helical gear bearing (3) and gears (12) on the interior surface as well. Claim 4. It is new brake system for light, medium and heavy weight vehicles and trailers according to the Claim 1, and characteristic of which is that it includes helical gears (11) on the end of helical gear pin (9). Claim 5. It is new brake system for light, medium and heavy weight vehicles and trailers according to the Claim 1, and characteristic of which is that it includes gears (12) on the screwed push piston (4). |
The brakes are one of the most vital components for motor vehicles. Particularly, to stop heavy load carrying vehicles such as trailers as required and in conformity with tow truck is important. Many brake systems with disc and cam are known in the current state of art. In cam brakes, long use of the brakes results in abrasion of the brake linings. The gap between the brake and cam increases resulting in reduction of brake performance. Different brake systems have been developed to prevent this condition.
One of the systems known is Z cam system. In this system, circular movement from the camshaft is transformed into linear movement by means of pins and thus braking is ensured. Thanks to automatic adjustment mechanism of the system, the brake gap adjustment is ensured.
Another is S cam brake system. In this system, circular movement from camshaft gives a forward motion by rolls rotating on their own axis. This motion leads to braking on the shoes. Automatic brake gap adjuster is placed on the other end of the camshaft.
Maintenance and repair works of the new brake system, which is subjected to the invention, for light, medium and heavy weight commercial vehicles are easier than the existing systems. BRIEF DESCRIPTION OF DRAWINGS
Figure 1. Upper perspective view of the new brake system for light, medium and heavy weight commercial vehicles subjected to this invention.
Figure 2. Disassembled view of the automatic brake gap adjustment mechanism of the new brake system for light, medium and heavy weight commercial vehicles subjected to this invention.
Figure 3. Different angle disassembled view of the automatic brake gap adjustment mechanism of the new brake system for light, medium and heavy weight commercial vehicles subjected to this invention.
Figure 4. Cross-section view of the automatic brake gap adjustment mechanism of the new brake system for light, medium and heavy weight commercial vehicles subjected to this invention. REFERENCE NUMBERS
1. Oval shaped special camshaft
2. Autothermic push piston
3. Helical gear bearing
4. Screwed push piston
5. Brake shoe with brake lining
6. Return spring
7. Fixing screw
8. Push spring
9. Helical gear special pin
10. Slot
11. Helical gears
12. Gears
The new brake system for light, medium and heavy weight commercial vehicles subjected to the invention covers automatic adjusted brakes in front axle, additional axle and live axle. The new brake system operates as follows;
The special camshaft (1) rotates around own axis transferring the force from brake cylinders to the direction of autothermic push piston (2). Autothermic push piston (2) with its slot (10) only moves along its own axis thanks to helical gear (11) special pin (9) pushed with the spring (8) force. Helical geared (11) bearing (3) also pushes the screwed push piston (4) while moving forward in its own axis due to contacting of A and B surfaces by autothermic push piston (2). Then the screwed push piston pushes the brake shoe with brake lining (5) and thus ensures braking. In order to return the shoes opened during braking, a return spring (6) connected to the brake shoes with lining (5) is available.
The strained springs (6) push back the screwed push piston when the braking ends, helical screwed (11) bearing (3) performs the axial movement by rotating due to helixes on its back for its E and D surfaces (helix tracked at axial direction). Due to its rotation, the screwed push piston (4) that gear (12) is opened on which moves as much as the amount that the brake linings abraded thanks to the gears (12) opened into the helical geared bearing (3), and thus keeps the brake gap fixed permanently and automatic brake gap adjustment is achieved.
This new system can also be operated as fixed in a way that auto adjust brake adjustment arm is installed to the camshaft without auto adjust mechanism.