CN101649876B - Caliper disc brake - Google Patents
Caliper disc brake Download PDFInfo
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- CN101649876B CN101649876B CN2009103067572A CN200910306757A CN101649876B CN 101649876 B CN101649876 B CN 101649876B CN 2009103067572 A CN2009103067572 A CN 2009103067572A CN 200910306757 A CN200910306757 A CN 200910306757A CN 101649876 B CN101649876 B CN 101649876B
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- caliper disc
- oil pocket
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Abstract
The invention provides a caliper disc brake which belongs to the technical field of machines and solves the problem that a piston of the prior caliper disc brake is easy to cause brake oil temperature to rise up quickly and further to influence braking effect and braking safety. The caliper disc brake comprises a caliper disc body with an oil cavity and a friction slice assembly arranged in the caliper disc body, wherein an auxiliary piston is arranged in the oil cavity, the top surface of the auxiliary piston supports against the friction slice assembly, the opening of the oil cavity is provided with a dustproof ring which can reset the auxiliary piston, a main piston is arranged between the auxiliary piston and the bottom surface of the oil cavity, the main piston is connected with the bottom surface of the auxiliary piston, and a seal ring is arranged between the main piston and the inner wall of the oil cavity. The piston structure of the caliper disc brake effectively reduces the highest temperature value of brake oil and improves braking stability; because the weight of the pistons is decreased, the resetting performance of the pistons is enhanced; and the piston structure of the caliper disc brake also has the advantages of high safety and stability and long service life.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of break, particularly a kind of caliper disc brake.
Background technique
Break is the mechanical parts that make the movement parts in the machinery stop or slowing down.Break mainly is made up of brake bracket, brake component and Effector etc.Break can be divided into outer block brake, interior shoe brake, band brake, the caliper disc brake etc. embraced again by the structural type of brake component.Wherein JB/T 10917-2008 has stipulated term and definition, pattern, technical requirements, test method and the inspection rule etc. of caliper disc brake.
Caliper disc brake comprises caliper, piston, friction plate assembly.All have in the caliper and be oil pocket cylindraceous, the opening of two groups of oil pockets is relative up and down.Caliper is opened the friction plate assembly is installed in the retaining, has the gap that is used to install brake disc between two friction plate assemblies.Piston is arranged in the oil pocket, can the fuel-displaced lumen pore end in Shen and be resisted against on the friction plate assembly in the outer end of piston.Though this caliper disc brake can be realized braking, but a large amount of heat of friction-produced between friction plate assembly and the brake disc during because of braking, and piston adopts ferrous materials to make, this heat just directly is passed to brake oil in the oil pocket by piston, cause the brake oil temperature sharply to raise, thereby have a strong impact on braking effect and Security.
Opening at oil pocket is provided with the dust ring that can make piston reset, is provided with seal ring between piston and oil pocket inwall, and the sealing circle is near the opening of oil pocket.Though this structure can realize sealing, also exists certain defective, in practice, has the slit between piston outer wall and the oil pocket inwall, because seal ring is positioned at the opening near oil pocket, swing can appear in the bottom of piston, thereby has increased the wear extent between seal ring and the piston.If the seal ring after the wearing and tearing fails in time to change, may cause the bottom amplitude of fluctuation increase of piston and appearance to rub mutually with the oil pocket inwall, cause occurring oil pocket and can't repair the situation that break integral body is scrapped.
Summary of the invention
The objective of the invention is to have the problems referred to above, proposed a kind ofly between the bottom surface of sub-piston and oil pocket, to set up main piston and main piston is connected on the sub-piston, thereby reduced the caliper disc brake that sub-piston is passed to total amount of heat on the brake oil at existing technology.
Purpose of the present invention can realize by following technical proposal: a kind of caliper disc brake, comprise pincers disk body and be arranged on the interior friction plate assembly of pincers disk body with oil pocket, in oil pocket, be provided with sub-piston, the sub-piston end face is resisted against on the friction plate assembly, opening at oil pocket is provided with the dust ring that sub-piston is resetted, it is characterized in that, be provided with main piston and main piston between the bottom surface of described sub-piston and oil pocket and link to each other, be provided with seal ring between described main piston and the oil pocket inwall with the sub-piston bottom surface.
In above-mentioned caliper disc brake, described oil pocket inwall is provided with annular groove, above-mentioned seal ring in annular groove and the sealing circle can make between main piston sidewall and the oil pocket inwall and to form sealing.
In above-mentioned caliper disc brake, described sub-piston is the diameter of the diameter of cylindric and sub-piston less than main piston.
In above-mentioned caliper disc brake, has the heat radiation gap between the outer side surface of described sub-piston and the oil pocket inwall.
In above-mentioned caliper disc brake, described main piston be cylindric and its exterior edge face on have groove, the bottom of above-mentioned sub-piston embeds in the groove.
In above-mentioned caliper disc brake, described main piston by screw on sub-piston.
In above-mentioned caliper disc brake, be provided with the pad that adopts heat insulator to make between described main piston and the sub-piston.
In above-mentioned caliper disc brake, described friction plate assembly comprises fixed base that is arranged on the pincers disk body and the friction plate that is fixed on the fixed base, and above-mentioned sub-piston is resisted against on the fixed base.
In above-mentioned caliper disc brake, be fixed with back-up ring on the described oil pocket inwall, the distance between the exterior edge face of back-up ring and main piston is slightly less than the thickness of friction plate.
In above-mentioned caliper disc brake, described dust ring adopts elastic material to make.
In above-mentioned caliper disc brake, the outer rim of described dust ring is fixed on the pincers disk body, and inner edge is fixed on the sub-piston, has to make dust ring have the circuitous of axial elasticity between outer rim and inner edge.
Compared with prior art, this piston structure ofthe caliper disc brake has can effectively reduce the brake oil maximum temperature value, has improved the stability of braking; Reduce the wearing and tearing of seal ring and oil pocket; Owing to reduced the weight of piston, thereby improved the return performance of piston; This piston structure ofthe caliper disc brake also has Security and stability is high, the advantage of long service life.
Description of drawings
Fig. 1 is the structural representation of the caliper disc brake of prior art.
Fig. 2 is the side-looking structural representation of this caliper disc brake.
Fig. 3 is the part sectional structure schematic representation of this caliper disc brake.
Fig. 4 is this caliper disc brake oil pocket structural representation.
Among the figure, 1, pincers disk body; 1a, make up tong; 1b, outer pincers; 1c, oil pocket; 2, friction plate assembly; 21, friction plate; 22, fixed base; 23, gap; 3, piston; 31, main piston; 32, sub-piston; 4, dust ring; 5, seal ring; 6, heat radiation gap; 7, back-up ring; 8, bolt pin.
Embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As Fig. 1, Fig. 2 and shown in Figure 3, this caliper disc brake comprises pincers disk body 1, main piston 31, sub-piston 32, friction plate assembly 2.
Specifically, pincers disk body 1 comprises make up tong 1a and outer pincers 1b, and make up tong 1a and outer pincers 1b are fixed together by bolt pin 8 and bolt.Making up tong all has the oil pocket 1c of two openings in 1a and the outer pincers 1b, the opening of the 1a oil pocket 1c that makes up tong and to clamp the opening of 1b oil pocket 1c outward relative.Be equipped with between 2, two friction plate assemblies 2 of a friction plate assembly at the opening that makes up tong 1a and clamp outward the oil pocket 1c of 1b and have the gap 23 that is used to install brake disc.Sub-piston 32 is arranged in the oil pocket 1c, and the outer end of sub-piston 32 can pass the opening of oil pocket 1c and be resisted against on the friction plate assembly 2.Friction plate assembly 2 comprises fixed base 22 that is connected on the pincers disk body 1 and the friction plate 21 that is fixed on the fixed base 22, and fixed base 22 relies on the opening of oil pocket 1c.
As shown in Figure 2, main piston 31 is cylindric, and sub-piston 32 is cylindric, main piston 31 between the bottom surface of sub-piston 32 and oil pocket and main piston 31 link to each other with sub-piston 32 bottom surfaces.The diameter of sub-piston 32 is less than the diameter of main piston 31, makes between the outer side surface of sub-piston 32 and the oil pocket 1c inwall to have heat radiation gap 6.
Main piston 31 can move endwisely slipping and can drive sub-piston 32 along oil pocket 1c inwall.Oil pocket 1c inwall is provided with annular groove, is provided with seal ring 5 in the annular groove, and seal ring 5 can make and form sealing between main piston 31 sidewalls and the oil pocket 1c inwall and make oil pocket 1c become airtight chamber.In oil pocket 1c, be full of brake oil, one end face of main piston 31 contacts with brake oil, and this surface of contact is the interior edge face of main piston 31, has groove on the exterior edge face of main piston 31, the bottom of sub-piston 32 partly embeds in the groove, thereby makes linking to each other with main piston 31 that sub-piston 32 can be stable.
This caliper disc brake compared with prior art; the structure shape of oil pocket 1c is measure-alike; sub-piston 32 is identical with piston 3 structure shapes; different places are: seal ring 5 is between main piston 31 and oil pocket 1c; can get in this caliper disc brake the position of seal ring 5 on oil pocket 1c inwall thus than the bottom surface of the more close oil pocket 1c of prior art position of piston; promptly shortened seal ring 5 to the distance between main piston 31 interior edge faces, thus stability and more effective seal ring 5 and the oil pocket 1c inwall protected when improving main piston 31 and endwisely slipping.
Between piston 3 and pincers disk body 1, be provided with the opening that dust ring 4 and this dust ring 4 are positioned at oil pocket 1c.This dust ring 4 adopts elastic material to make, and elastic material is an ethylene propylene diene rubber.The outer rim of dust ring 4 is fixed on the pincers disk body 1, and inner edge is fixed on the sub-piston 32, has between inner edge and the outer ring to make dust ring 4 have the circuitous of axial elasticity.This dust ring 4 has can prevent that promptly dust from entering in the oil pocket 1c, can make outside mobile rear master piston 31 and sub-piston 32 return to the advantage of original position again.
During the braking of this caliper disc brake, friction plate 21 produces a large amount of heats with the brake disc friction, and this heat can be passed on sub-piston 32 and the brake oil.Between the bottom surface of sub-piston 32 and oil pocket, set up main piston 31, avoid heat directly to be passed on the brake oil, thereby effectively reduced in per unit friction plate 21 and be passed to calorie value on the brake oil, also reduced simultaneously to be passed to heat total value the highest on the brake oil, promptly reduced the maximum temperature value of brake oil.
Sub-piston 32 is tubular, promptly has the fixed base 22 of opening in friction plate assembly 2 of cavity and cavity in the sub-piston 32, and this cavity can help distributing of sub-piston 32 heats.Has heat radiation gap 6 between the outer side surface of sub-piston 32 and the oil pocket 1c inwall, this heat radiation gap 6 also contacts the appearance of sub-piston 32 sidewalls with air, also improved sub-piston 32 external loses heat value in per unit, be passed to calorie value on the main piston 31 thereby further reduced sub-piston 32.
As the another kind of scheme of such scheme, main piston 31 by screw on the face of the bottom surface of sub-piston 32.
As the optimized project of such scheme, adopt the pad that thermal-protective material makes or on the surface of contact of sub-piston 32/ main piston 31 between sub-piston 32 and the main piston 31, coat insulating moulding coating uniformly being provided with between sub-piston 32 and the main piston 31.This optimized project can further reduce sub-piston 32 and be passed to calorie value on the main piston 31.
When depressing brake petal, brake oil can fill among the oil pocket 1c of this caliper disc brake and main piston 31 axially outwards slided and promote sub-piston 32 simultaneously, 32 pairs of friction plate assemblies 2 of sub-piston are outwards promoted, be separately positioned on the gap 23 of making up tong 1a and clamping between the friction plate 21 on the 1b outward and diminish, machinery just was decelerated or was braked this moment.If unclamp pedal, piston 3 is slowly extruded brake oil oil pocket 1c and is returned to original state under the effect of dust ring 4.
Owing to can slowly be depleted when brake block and braking plate friction, on oil pocket 1c inwall, be fixed with back-up ring 7, back-up ring 7 can limit the distances that main piston 31 axially outwards slides, this back-up ring 7 and when initial position the distance between the exterior edge face of main piston 31 be slightly less than the thickness of new friction plate 21.Friction plate 21 is gradually after the abrasion, the exterior edge face of main piston 31 can be resisted against on the back-up ring 7, because the strength that friction plate 21 is pressed on the brake disc is limited, the little malfunctioning phenomenon of braking occurs, thereby the driver just can this phenomenon of perception can check and handle this phenomenon timely and effectively this moment.
This caliper disc brake has increased main piston 31 parts from the teeth outwards, increased the gross weight of sub-piston 32 and sub-piston 31, its both gross weight of reality is littler than the piston weight of prior art, thereby dust ring 4 required axial elasticity performances have been reduced, not changing dust ring 4 times, effectively raise the performance that piston 3 resets.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used pincers disk body 1 morely; 1a makes up tong; Outer pincers 1b; Oil pocket 1c; Friction plate assembly 2; Friction plate 21; Fixed base 22; Gap 23; Piston 3; Main piston 31; Sub-piston 32; Dust ring 4; Seal ring 5; Heat radiation gap 6; Back-up ring 7; Bolt pin 8 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (7)
1. caliper disc brake, comprise have oil pocket (1c) pincers disk body (1) and be arranged on friction plate assembly (2) in pincers disk bodies (1), in oil pocket (1c), be provided with sub-piston (32), sub-piston (32) end face is resisted against on the friction plate assembly (2), opening at oil pocket (1c) is provided with the dust ring (4) that sub-piston (32) is resetted, it is characterized in that, be provided with main piston (31) and main piston (31) between the bottom surface of described sub-piston (32) and oil pocket (1c) and link to each other, be provided with seal ring (5) between described main piston (31) and oil pocket (1c) inwall with sub-piston (32) bottom surface; Described sub-piston (32) is the diameter of the diameter of cylindric and sub-piston (32) less than main piston (31); Has heat radiation gap (6) between the outer side surface of described sub-piston (32) and oil pocket (1c) inwall; Be fixed with back-up ring (7) on described oil pocket (1c) inwall, distance between the exterior edge face of back-up ring (7) and main piston (31) is slightly less than the thickness of friction plate (21), and the exterior edge face of described main piston (31) can be resisted against on the back-up ring (7) after friction plate (21) weares and teares gradually.
2. caliper disc brake according to claim 1, it is characterized in that, described oil pocket (1c) inwall is provided with annular groove, and above-mentioned seal ring (5) is positioned at annular groove and sealing circle (5) can make formation sealing between main piston (31) sidewall and oil pocket (1c) inwall.
3. caliper disc brake according to claim 1 is characterized in that, described main piston (31) be cylindric and its exterior edge face on have groove, the bottom of above-mentioned sub-piston (32) embeds in the groove.
4. according to claim 1 or 2 or 3 described caliper disc brakes, it is characterized in that, described main piston (31) by screw on sub-piston (32).
5. according to claim 1 or 2 or 3 described caliper disc brakes, it is characterized in that, be provided with the pad that adopts heat insulator to make between described main piston (31) and the sub-piston (32).
6. according to claim 1 or 2 or 3 described caliper disc brakes, it is characterized in that, described friction plate assembly (2) comprises and is arranged on the fixed base (22) on pincers disk bodies (1) and is fixed on friction plate (21) on the fixed base (22) that above-mentioned sub-piston (32) is resisted against on the fixed base (22).
7. according to claim 1 or 2 or 3 described caliper disc brakes, it is characterized in that described dust ring (4) adopts elastic material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103067572A CN101649876B (en) | 2009-09-09 | 2009-09-09 | Caliper disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103067572A CN101649876B (en) | 2009-09-09 | 2009-09-09 | Caliper disc brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101649876A CN101649876A (en) | 2010-02-17 |
| CN101649876B true CN101649876B (en) | 2011-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103067572A Active CN101649876B (en) | 2009-09-09 | 2009-09-09 | Caliper disc brake |
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| Country | Link |
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| CN (1) | CN101649876B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234588A (en) * | 2022-09-22 | 2022-10-25 | 徐州淮海新能源汽车有限公司 | New energy automobile safety brake |
| CN116989074B (en) * | 2023-09-28 | 2023-12-29 | 无锡星微科技有限公司杭州分公司 | Air-break brake type clamp for air-float turntable |
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2009
- 2009-09-09 CN CN2009103067572A patent/CN101649876B/en active Active
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| CN101649876A (en) | 2010-02-17 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Mechanical jaw disc type brake Effective date of registration: 20181220 Granted publication date: 20111123 Pledgee: Industrial Commercial Bank of China Ltd Yuhuan branch Pledgor: Zhejiang Stronger Hydraulic Co., Ltd. Registration number: 2018330000487 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200908 Granted publication date: 20111123 Pledgee: Industrial Commercial Bank of China Ltd. Yuhuan branch Pledgor: ZHEJIANG STRONGER HYDRAULIC Co.,Ltd. Registration number: 2018330000487 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |