CN201884526U - Brake caliper of automobile brake - Google Patents
Brake caliper of automobile brake Download PDFInfo
- Publication number
- CN201884526U CN201884526U CN2010205710428U CN201020571042U CN201884526U CN 201884526 U CN201884526 U CN 201884526U CN 2010205710428 U CN2010205710428 U CN 2010205710428U CN 201020571042 U CN201020571042 U CN 201020571042U CN 201884526 U CN201884526 U CN 201884526U
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- piston
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- brake
- isolation platform
- platform
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Abstract
The invention relates to a brake caliper of an automobile brake, which comprises a brake caliper body arranged on a cylinder body, a piston arranged in the cylinder body, and an oil inlet hole and an oil discharge hole arranged on the bottom surface of the cylinder body, wherein an isolator is arranged between the bottom surface of the piston and the bottom surface of the cylinder body, cavities formed by separation of the isolator are arranged between the piston and the cylinder body, and a communicating structure communicated with the cavities is arranged between the piston and the cylinder body. As for the brake caliper of the automobile brake, an arc cavity can not be formed between the piston and the cylinder; and the brake caliper solves the problems that the arc cavity is formed between the piston and the cylinder body, air in the arc cavity can not be pumped out in the vacuumizing process before hydraulic oil injection, and air in the arc cavity influences the braking effect of the whole automobile.
Description
Technical field
The utility model relates to brake system, relates in particular to a kind of brake calipers of automotive brake.
Background technique
Automobile brake is a kind of important way that automobile stops, the quality of automobile brake perfrmance directly has influence on the Safety performance of vehicle, the security of the lives and property that is related to the occupant, automobile brake adopts friction catch usually, the frictional force that is break by friction plate stops operating wheel, the frictional force on wheel and ground stops vehicle, the break that extensively adopts on the car is divided into drum-type and disc type two big classes according to the difference of rotary unit at present, their difference is: the rotatable member in the drum-type pivoting friction pair is a brake drum, is working surface with its cylndrical surface; Rotating element in the pivoting friction pair of disk type braker is discoid brake disc, is working surface with its end face.That a kind of break no matter, the parts that drive the friction pair action are brake calipers, brake calipers is usually by the hydraulic way driving force, promptly cylinder body (being called wheel cylinder again) is set at the brake calipers body, cylinder body is built-in with piston, inject highly pressurised liquid and go driven plunger in cylinder body, piston removes to drive the friction pair that is attached thereto.In China Patent No. is ZL200520073964.5, name is called in the patent documentation of " suspension jaw type pan brake " has mentioned a kind of brake calipers, the bottom surface of its cylinder body and the bottom surface of piston are planar design, at Chinese notice of authorization number is CN291487091U, name is called in the patent documentation of " brake calipers " and discloses a kind of brake calipers, and ring step, piston bottom surface that his cylinder body bottom surface periphery extends in respect of integrative-structure are designed to umbilicate form.This design of cylinder body bottom surface and piston bottom surface has following deficiency: referring to Fig. 1, when producing brake calipers, in order to prevent that cylinder body from getting rusty, improve efficiency of assembling, need be at cylinder wall portion fatten, grease can deposit between cylinder body bottom surface and piston bottom surface when installing to piston in the cylinder body, the oil layer 10 of deposition can be separated into disconnected cavity with the cavity between piston and the cylinder body, thereby make oil inlet hole 1, be not communicated with between the cavity 3 between exhaust port 2 and piston 4 and the cylinder body 5, cavity 3 becomes lonely chamber, can not take out in the vacuum of air in so lonely chamber 3 before filling hydraulic oil, after adding brake fluid, the air of 3 the insides, lonely chamber can be sneaked in the brake fluid, influences the braking effect of car load.
Summary of the invention
The utility model provides the automobile brake pincers that can not form lonely chamber between a kind of piston and the cylinder body, the problem that solved that existing brake calipers can not taken out because of forming the air in the lonely chamber in lonely chamber, the vacuum before filling hydraulic oil between piston and the cylinder body, the air in the lonely chamber influences the braking effect of car load.
Above technical problem solves by following technical proposal: a kind of brake calipers of automotive brake, comprise the brake calipers body that is provided with cylinder body, be built in the piston of cylinder body, the bottom surface of cylinder body is provided with oil inlet hole and exhaust port, between the bottom surface of the bottom surface of described piston and described cylinder body, be provided with the isolation platform, be provided with the cavity that is separated by described isolation platform between described piston and the described cylinder body, be provided with the connectivity structure that is communicated with described cavity between described piston and the described cylinder body.By the design isolated platform, when making the piston bottom surface abut to the cylinder body bottom surface, there is bigger gap at other position between piston bottom surface and the cylinder body bottom surface except that isolating the platform place, grease can not be tightly connected piston and cylinder body in the place outside the isolation platform is sentenced, that is to say that piston and cylinder body only may be tightly connected in the place's formation of isolation platform, so that to isolate platform be the isolation zone piston is become with separated by spaces between the cylinder body as if this cavity independently, again by the design connectivity structure, make between each cavity to be communicated with, thereby stopped the formation in lonely chamber; As for can deciding on the position relation that the quantity shape of isolating platform in the actual design reaches to each other to isolate platform is that what cavitys the boundary forms between piston and the cylinder body.Suppose to isolate platform and be annular, isolate platform as one and then form two cavitys, isolate platforms and isolate not intersect between the platform then forming three cavitys for two, isolate platforms and isolate platform intersecting and then form four cavitys for two.
As preferably, described isolation platform is a ring.Because of piston and cylinder body are typically designed to circularly, isolating platform, to be designed to ring then easy to process.
As preferably, the height of described isolation platform 〉=2 millimeter.Make by isolating the formed cavity of platform to be difficult for more being stopped up, prevent that cavity from forming not according to the situation of expection by grease.
As preferably, the bottom surface of described isolation platform is the plane, and the width on described plane is 1/4-1/6 of a described piston bottom surface radius.Prevent to form little cavity on the bottom surface that isolates platform, influence vacuumizes effect, and then influences the braking effect of vehicle.
Preferred as another, the bottom surface of described isolation platform is an arc surface.Arc surface makes that the surface of contact between piston and the cylinder body is less, is not easy to isolate the platform bottom surface and forms little cavity.
As preferably, described isolation platform is located at described oil cylinder bottom surface periphery along last, and described ring platform and described oil cylinder are structure as a whole, and described connectivity structure is the groove that is located at described piston bottom surface.Easy to process.
As preferably, the chamfer radius between the bottom surface of described isolation platform and the described oil cylinder side is less than the chamfer radius between described piston bottom surface and the described piston side.Circular chamfering can prevent that stress from concentrating, and allows the activation that differs of the radius of two chamferings prevent to form the grease seal layer in corner.
Preferred as another, described isolation platform is located on the described piston bottom surface, and described connectivity structure is the through hole that is located on the described isolation platform and runs through described isolation platform both sides.Be arranged on the piston, process, safeguard convenient.
As preferably, the diameter of described through hole 〉=1 millimeter.Prevent that through hole from being stopped up by grease, influence is communicated with effect.
Preferred as another, described isolation platform is located on the described piston bottom surface, and described connectivity structure is the groove that is located on the described isolation platform bottom surface and runs through described isolation platform both sides.
The utlity model has following advantage, isolate platform and connectivity structure by being provided with, make between piston and the cylinder body and can not form lonely chamber, do not influence and vacuumize, can not be mixed with air, make the break reliable operation thereby make in the brake fluid, improved the Security of vehicle, novel need of this use add different parts on original structure, make easily and realization, can not increase how many manufacture costs.
Description of drawings
Fig. 1 forms the schematic representation in lonely chamber for the brake calipers of existing structure.
Fig. 2 is the cross-sectional view of this use new embodiment one.
Fig. 3 is the perspective view of the utility model embodiment one piston.
Fig. 4 is the cross-sectional view of this use new embodiment two.
Fig. 5 is the perspective view of the utility model embodiment two piston.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Embodiment one, referring to Fig. 2, a kind of brake calipers of automotive brake, comprise the brake calipers body 6 that is provided with cylinder body 5, be built in the piston 4 of cylinder body 5, the bottom surface of cylinder body 5 is provided with oil inlet hole 1 and exhaust port 2, be connected with piston ring 41 between piston 4 and the thick stick body 5, piston ring 41 seals, oil inlet hole 1 is positioned at the centre of cylinder body 5 near position placed in the middle, exhaust port 2 is positioned at the place at the relatively more close edge, bottom surface of cylinder body 5, on the bottom surface of body, be provided with and isolate platform 7, exhaust port 2 has part to be positioned on the isolation platform, isolating platform 7 is structure as a whole with cylinder body, isolating platform 7 is ring, the height of isolating platform 7 is 2 millimeters, isolate platform 7 and be positioned at the periphery of cylinder body 5 along last, the bottom surface 71 that isolates platform 7 is the plane, between the bottom surface 71 of isolation platform and the side 51 of cylinder body 5 is the circular arc transition, the radius of circular arc R 1 is 3 millimeters, be arc transition between the bottom surface 43 of piston 4 and the side 42, the radius of circular arc R 2 is 5 millimeters, in order to prevent that grease from forming the sealing oil film between circular arc R 1 and circular arc R 2, then effect is more satisfactory so the radius that should make circular arc R 1 in the design is less than the radius of circular arc R 2, certainly will isolating transitional surface between the side of the bottom surface of platform and cylinder body, to be designed to other plane or curved surface good, only otherwise consistent with the transitional surface size shape of the bottom surface of piston and side, also can play and prevent that grease is in the effect that forms sealing film herein, isolate platform 7 piston is become inside and outside two cavitys with space segmentation between the cylinder body, be inner chamber body 81 and outer chamber 82, on the bottom surface of piston 4, be provided with the connectivity structure 9 of communication with cavity body 81 and outer chamber 82, after connectivity structure 9 had been arranged, oil layer 10 can not separate inner chamber body 81 and outer chamber 82;
Referring to Fig. 3, connectivity structure 9 is for opening four grooves on the piston bottom surface, and groove is evenly distributed on the bottom surface of piston 4, and the width of groove is 4 millimeters, also is provided with an annular ditch 44 that is communicated with an end of these four grooves on the bottom surface of piston.
Embodiment two, referring to Fig. 4, a kind of brake calipers of automotive brake, comprise the brake calipers body 6 that is provided with cylinder body 5, be built in the piston 4 of cylinder body 5, the bottom surface of cylinder body 5 is provided with oil inlet hole 1 and exhaust port 2, be connected piston ring 41 between piston 4 and the thick stick body 5, piston ring 41 seals, on the bottom surface of piston 4, be provided with and isolate platform 7, isolate platform 7 piston is become inside and outside two cavitys with space segmentation between the cylinder body, i.e. inner chamber body 81 and outer chamber 82 are being isolated the connectivity structure 9 that is provided with communication with cavity body 81 and outer chamber 82 on the platform 7;
Referring to Fig. 5, isolating platform 7 is ring, the height of isolating platform 7 is 3 millimeters, the bottom surface 71 that isolates platform is the plane, when the bottom surface that isolates platform is designed to the plane, it is relatively good that the width of isolating platform 7 is designed to 1/4-1/6 effect of radius of piston 4, is 0.2 in the present embodiment, is designed to arc surface as the bottom surface that isolates platform, then for the no concrete size requirement of width design of isolating platform, the bottom surface that isolates platform cannot be designed to reeded, otherwise groove can form lonely chamber, then can influence equally to vacuumize, connectivity structure 9 is for connecting six manholes of the both sides that isolate platform 7, the radius of through hole is 1.5 millimeters, and test shows, as long as the diameter of through hole is not less than 1 millimeter, then be difficult in use being stopped up by grease, certainly, connectivity structure 9 is designed to be positioned at the groove of isolating the platform bottom surface, and effect also is equal to.
During use, this braking clamp body is fixed on the car body by tong holder, and piston 4 connects friction pair, exhaust port 2 closes, and oil inlet hole 1 connects the pressurized oil system of automobile, when vacuumizing, with exhaust port 2 sealings, the suction port of vacuum pump connects oil inlet hole 1, because the effect of connectivity structure 9 can be partitioned into lonely chamber by oil layer 10 between piston 4 and the cylinder body 5, so the air in the cavity between piston 4 and the cylinder body 5 can be extracted out fully, when injecting brake fluid, can not be mixed with air, braking effect can reach expection.
Claims (10)
1. the brake calipers of an automotive brake, comprise the brake calipers body that is provided with cylinder body, be built in the piston of cylinder body, the bottom surface of cylinder body is provided with oil inlet hole and exhaust port, it is characterized in that, between the bottom surface of the bottom surface of described piston and described oil cylinder, be provided with the isolation platform, be provided with the cavity that is separated by described isolation platform between described piston and the described cylinder body, be provided with the connectivity structure that is communicated with described cavity between described piston and the described cylinder body.
2. the brake calipers of automotive brake according to claim 1 is characterized in that, described isolation platform is a ring.
3. the brake calipers of automotive brake according to claim 1 is characterized in that, the height of described isolation platform 〉=2 millimeter.
4. according to the brake calipers of claim 1 or 2 or 3 described automotive brakes, it is characterized in that the bottom surface of described isolation platform is the plane, the width on described plane is 1/4-1/6 of a described piston bottom surface radius.
5. according to the brake calipers of claim 1 or 2 or 3 described automotive brakes, it is characterized in that the bottom surface of described isolation platform is an arc surface.
6. the brake calipers of automotive brake according to claim 2 is characterized in that, described isolation platform is located at described cylinder body bottom surface periphery along last, and described isolation platform and described cylinder body are structure as a whole, and described connectivity structure is the groove that is located at described piston bottom surface.
7. the brake calipers of automotive brake according to claim 6 is characterized in that, the chamfer radius between the bottom surface of described isolation platform and the described oil cylinder side is less than the chamfer radius between described piston bottom surface and the described piston side.
8. according to the brake calipers of claim 1 or 2 or 3 described automotive brakes, it is characterized in that described isolation platform is located on the described piston bottom surface, described connectivity structure is the through hole that is located on the described isolation platform and runs through described isolation platform both sides.
9. the brake calipers of automotive brake according to claim 8 is characterized in that, the diameter of described through hole 〉=1 millimeter.
10. according to the brake calipers of claim 1 or 2 or 3 described automotive brakes, it is characterized in that described isolation platform is located on the described piston bottom surface, described connectivity structure is the groove that is located on the described isolation platform bottom surface and runs through described isolation platform both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205710428U CN201884526U (en) | 2010-10-22 | 2010-10-22 | Brake caliper of automobile brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205710428U CN201884526U (en) | 2010-10-22 | 2010-10-22 | Brake caliper of automobile brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884526U true CN201884526U (en) | 2011-06-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205710428U Expired - Fee Related CN201884526U (en) | 2010-10-22 | 2010-10-22 | Brake caliper of automobile brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018014207A1 (en) * | 2016-07-19 | 2018-01-25 | 乐矣天 | Dual-cylinder brake caliper assembly facilitating air discharge |
-
2010
- 2010-10-22 CN CN2010205710428U patent/CN201884526U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018014207A1 (en) * | 2016-07-19 | 2018-01-25 | 乐矣天 | Dual-cylinder brake caliper assembly facilitating air discharge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110629 Termination date: 20171022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |