CN101988550A - Hydraulic brake - Google Patents
Hydraulic brake Download PDFInfo
- Publication number
- CN101988550A CN101988550A CN2009100656679A CN200910065667A CN101988550A CN 101988550 A CN101988550 A CN 101988550A CN 2009100656679 A CN2009100656679 A CN 2009100656679A CN 200910065667 A CN200910065667 A CN 200910065667A CN 101988550 A CN101988550 A CN 101988550A
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- seal ring
- piston
- seal
- brake
- groove
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Abstract
The invention discloses a disk hydraulic brake capable of adjusting automobile brake clearance automatically. In the disk hydraulic brake, an annular space for a sealing ring to move axially is reserved in a sealing ring groove. The cross sections of the space, the sealing ring and the sealing ring groove are approximately trapezoid or V-shaped or triangular; and the sealing ring is pressed by the piston and the bottom of the sealing ring groove and performs static sealing basically. In braking, the piston and the inner ring of the sealing ring are driven by an oil pressure, the deformation resistance to axial movement of the inner ring of the sealing ring is overcome, a force for pulling back is stored, and a braking friction piece is linked to eliminate axial movement space and brake clearance and press a braked part at the same time, and thus, friction brake is realized. When braking is not needed, the oil pressure is withdrawn, and under the action of the pull-back force of the sealing ring, the machine parts and the two space clearances are restored. Thus, when braking is not needed, the machine parts are protected from friction, heating, damage oil leakage and long repair and replace period, and are energy-saving, emission-reducing, low in consumption and safe. The structure of the disk hydraulic brake is simple, and the production cost is unchanged basically.
Description
Technical field
The present invention relates to a kind of hydraulic brake that can regulate brake clearance automatically, especially can regulate the hydraulic brake of setting automobile disk-type braking return gap automatically.
Technical background
At present, known hydraulic brake, the rarest two kinds: a kind of automotive disc hydraulic brake of forming by brake cylinder, seal groove, seal ring, piston, drag friction piece, brake disc; The drum type hydraulic brake that another kind is made up of brake cylinder, leather cup or seal ring, piston, brake shoe, return spring, brake drum.When braking, braking force makes supercharging in the brake cylinder, and the piston of disc hydraulic break slides with respect to seal ring, oil cylinder inner wall, promotes the drag friction piece and presses to brake disc; Or the leather cup of drum type hydraulic brake or seal ring, piston slide with respect to oil cylinder inner wall, promotes the elastic force that brake shoe overcomes return spring, presses to brake drum, produces friction brake force, and make wheel decelerates.When need not to brake, the fluid step-down, the disc hydraulic break is under the distortion precompression effect of parts such as brake disc, drag friction piece, piston, seal ring, with piston and fluid pushed home; Drum type hydraulic brake draws moving shoe plate under the effect of return spring, make piston and leather cup or seal ring slide fluid return brake off.Retrieve by the internet, retrieve the technology of applying for a patent: name is called " the hydraulic braking wheel cylinder of band automatic compensation gap device ", the claimant is: Xuzhou U.S.A car Co., Ltd of speeding, application number: 200620071172.9, date of application: 2006.05.01, the utility model application patented technology of classification number: F16D65/72 (2006-01), it has solved the automatic adjusting problem in drum brake gap.
But the seal ring of these three kinds of hydraulic brakes or leather cup or seal ring all are sliding frictions, once braking, and the wearing and tearing of twice wearing and tearing, particularly drum-type are more serious, and easy oil leakage is fragile, even braking failure, repaiies and changes the cycle weak point, and Security is low; Disc type in the time need not braking, drag friction piece and brake disc still have friction, produce resistance, consumes energy, abrasive parts using, heating, even make the brake disc thermal distortion and damage causes that to repair the cycle of changing short, produces unnecessary economic burden.Bring hidden danger to safety simultaneously.
Summary of the invention
In order to overcome the Sealing of existing hydraulic brake, easy to wear, easy oil leakage damages, and drum-type or belt hydraulic brake need artificial periodic adjustment brake clearance; During need not the braking of disc type, still have friction, produce resistance, the power consumption source, heating is decreased parts, dirty environment, the deficiency that safety coefficient is low.The invention provides a kind of hydraulic brake, can not only make brake safe effective, and can keep the static seal of Sealing substantially, Sealing weares and teares hardly, the adjusting of energy automatic stepless simultaneously keeps the brake clearance of setting, keep not grinding Moving plate when not braking, and energy-conservation, reduce discharging, lower consumption, ensure safety.
The present invention's technological scheme that is adopted of dealing with problems is: hydraulic brake is installed in proper order by brake cylinder, seal groove, seal ring, piston, drag friction part, braked part and is formed, wherein, seal ring by piston and seal groove at the bottom of crush seal and be divided into inner room with outside, the space that moves axially of seal ring is set in the scope of seal ring or in the scope of seal groove.This moves axially the space is annular, is preferably disposed between the seal ring outside and the seal ring cell wall.The annular space that the seal ring work axially moves back and forth.Seal ring by piston and seal groove at the bottom of extruding remain basic static seal.Seal ring outwards moves axially and resiliently deformable the time, has laid in the back edge to piston.
The section that moves axially space, seal ring, seal groove three is respectively trapezoidal or approximate trapezoid or approximate " V " font or " V " font or approximate " △ " shape or " △ " shape or like rectangle.Circular shaft is grown up in cylindrical axial length in the seal ring.The maximum diameter of seal ring or seal groove is inclined to the outside respectively.Outside piston that be shaped on coaxial line with the annular groove seal ring sealing.Make Flexible Connector, piston is connected with the drag friction part.
Another kind of hydraulic brake, install in proper order by brake cylinder, seal groove, seal ring, piston, brake shoe or clamping strap, braked part and to form, seal ring is divided into inner room with outside by piston and seal groove crush seal, make seal groove in the brake oil cylinder body.Seal ring is installed in the seal groove.The space that moves axially of seal ring is set in the scope of seal ring or in the scope of seal groove.Seal ring is basic static seal by piston and seal groove extruding all the time.
This section that moves axially space, seal ring, seal groove three is respectively trapezoidal or approximate trapezoid or approximate " V " font or approximate " △ " shape or like rectangle.Outside piston that be shaped on coaxial line with the annular groove seal ring sealing.Elastic component is set, piston is connected with brake shoe or clamping strap.
Two kinds of hydraulic brakes, when braking, braking force is with the inboard of brake fluid pressure injection to piston and seal ring, piston and seal ring are exerted oneself simultaneously, overcome the deformation resistance of seal ring, piston and seal ring main body outwards move axially jointly, present the interior circle of seal ring on the seal ring section and rotate around cylindrical.Laid in the back edge to piston simultaneously, it is better that seal ring is squeezed the crack sealing.Move axially the space and tied up, piston promotes drag friction part (or brake shoe or clamping strap) and presses to braked part (or brake drum), produces friction brake force and slows down.After drag friction part (or shoe plate or band) and braked part wore and tore, piston continued to keep friction brake force in the outside little slip of seal ring inner headed face.
In the time need not braking, brake fluid pressure is removed, under the effect of seal ring distortion back edge, and pulling piston, interlock drag friction part (or brake shoe or clamping strap), the brake fluid return keeps regulating the brake clearance that is provided with automatically simultaneously, recovers to move axially the space.Brake off.
The invention has the beneficial effects as follows: under the situation that guarantees normal brake application, when not braking, regulate the maintenance brake clearance automatically, the basic static seal that keeps seal ring and parts, structure is too simple, increases cost of production hardly, and the result is energy-conservation, reduction of discharging, consumption reduction, safety.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples
Fig. 1 is the theory structure schematic representation of first embodiment of the invention
Fig. 2 is the theory structure schematic representation after the braking in Fig. 1 example
Fig. 3 be a kind of with in the sectional view of seal ring of annular groove
Fig. 4 is the sectional view that seal ring amplifies among Fig. 1, Fig. 2
Fig. 5 is the sectional view that seal ring amplifies among Figure 12, Figure 13
Fig. 6 is a kind of seal ring sectional view that moves axially the space that has
Fig. 7 is that seal ring and peripheral parts amplify stressed distribution map among Fig. 1
Fig. 8 is that seal ring moves axially and peripheral parts amplify stressed distribution and analyse figure among Fig. 2
Fig. 9 is that seal ring is out of shape deposit back edge principle analysis figure at work
Figure 10 is equipped with Flexible Connector, and piston connects drag friction part view
Figure 11 is equipped with elastic component, piston is connected the view of brake shoe end
Figure 12 is equipped with two kinds of elastic components in addition, piston is connected the view of brake shoe end
Figure 13 is second embodiment's a theory structure schematic representation
Figure 14 is the theory structure schematic representation after the braking among Figure 13
Figure 15 is that seal ring and peripheral parts amplify stressed distribution and analyse figure among Figure 13
Figure 16 is that seal ring moves axially and peripheral parts amplify stressed distribution and analyse figure among Figure 14
Among the figure: 1, drag friction part, 2, piston, 3, brake cylinder, 4, move axially the space, 5, seal ring, 6, seal groove, 7, braked part, 8, Flexible Connector, 9, connecting nail, 10, elastic component, 11, screw, 12, brake shoe, 13, elastic component, 14, pressing plate, 15, braked part, 16, micro-force spring.
Embodiment
In Fig. 1, hydraulic brake is by brake cylinder 3, seal groove 6, seal ring 5, piston 2, drag friction part 1, braked part 7 orders are installed and are connected and form, wherein, seal ring 5 is divided into inner room with outside by piston 2 and seal groove 6 end crush seal, between seal ring 5 outsides and seal groove 6 walls, seal ring 5 is set moves axially space 4.This moves axially space 4 and is the coaxial circles annular, and section is approximate trapezoid or approximate " V " shape or rectangle, and " V " font preferably is as Fig. 1, Fig. 6, Fig. 7, Fig. 9, shown in Figure 15.Seal ring 5 is rings, be contained in the seal groove 6, by piston 2 and the extruding of 6 ends of seal groove, the no state of wear that is basic static seal, the section of seal ring 5 are approximate trapezoid or approximate " △ " shape or approximate rectangular, and interior circular shaft is grown up in cylindrical axial length, the maximum diameter tendency outside, in circle be shaped on annular groove or ring-shaped lug, as shown in Figure 3, the seal ring among Fig. 45 preferably; Seal groove 6 is ring circular troughs, seal ring 5 is housed in the groove and moves axially space 4, and the section of seal groove 6 is trapezoidal or approximate trapezoid or approximate " V " shape or like rectangle, preferably the approximate trapezoid among Fig. 1, Fig. 2, Fig. 7, Fig. 8 or approximate " V " shape; Piston 2 cylindricals are shaped on coaxial ring circular groove, and each ring circle groove can be established pitch difference, as Figure 11, Figure 12, Figure 15, Figure 16, also can not establish ring circular groove such as Figure 10; Flexible Connector 8 is set, connects piston 2 and drag friction part 1, Flexible Connector 8, the center is connected with drag friction part 1 center with connecting nail 9, and the groove in cylindrical and the piston is made elastic support assembling interconnect function, as shown in figure 10.
Piston 2 evenly is squeezed on seal ring 5 inner headed faces in the time need not braking, backward extrusion power major part acts on 6 ends of seal groove, fraction acts on the skew wall of seal groove 6 inboards, as shown in Figure 7, what keep seal ring 5 moves axially space 4, and piston 2 connects drag friction parts 1 by Flexible Connector 8 simultaneously.Drag friction part 1 keeps the suitable brake clearance that is provided with braked part 7, as shown in Figure 1.
When need are braked, increase as Fig. 2, braking oil pressure shown in Figure 8, promote piston 2 and seal ring 5 inboards, overcome seal ring 5 deformation resistances, lay in back edge simultaneously, as shown in Figure 9, seal ring 5 inboard AO lines move to the BO line, promptly become short-term by long line pressure, and it is bigger that the A point moves to the increase of B point pressure, seal tighter, it is that pressure weakens line that not easy oil leakage, CO line move on to the DO line, like this in the 5 outside axially movable whiles of seal ring, promptly increase sealing, laid in back edge again; Seal ring 5 is in the static seal state all the time with the piston 2 and 6 ends of seal groove, does not does not wear and tear.Press piston 5 and drag friction part 1 to eliminate and move axially space 4 and brake clearance, brake with braked part 7 frictions.
In the time need not braking, oil pressure is removed, and under the deposit back edge effect of seal ring 5, makes piston 2, fluid, drag friction part 1 return, recovers to move axially space 4 and brake clearance.Remove friction catch.
In Figure 13, it is second embodiment's hydraulic brake, install by brake cylinder 3, seal groove 6, seal ring 5, piston 2, brake shoe 12 or clamping strap, braked part 15 orders, wherein, seal ring 5 is divided into inner room with outside by piston 2 and seal groove 6 end crush seal, make seal groove 6 in brake cylinder 3 bodies, what seal ring 5 was set moves axially space 4 in the scope of seal groove 6, and seal ring 5 is installed in the seal groove 6.Seal groove 6 is trapezoidal as Figure 15, section shown in Figure 16, and the section of seal ring 5 is trapezoidal or approximate trapezoid, and moving axially space 4 is " V " shapes.If elastic component 13 is connected piston 2 with brake shoe 12, this elastic component 13 is an elastic rod as shown in figure 11, the hole of piston 2 outer end and brake shoe 12 stomidiums is worn connect together, and makes brake shoe 12 end elastic top in piston 2, and is fixing by screw 11; Also having a kind of elastic component 10 is that block rubber or spring are contained in the interior circle of piston 2 outer sections, and is pressed in respectively on the convex of brake shoe 12 end both sides, and the other end presses solidly with pressing plate 14 and screw 11, or fixing with the extrusion of the convex in the piston 2, as shown in figure 12; Piston 2 cylindricals are shaped on coaxial a plurality of ring circular grooves, the sealing that matches with seal ring 5 of this groove.Micro-force spring 16 is set to be connected with large-scale brake shoe 12.
When braking, Figure 13 and Figure 14, shown in Figure 16, the circle main bodys outwards move axially and overcome seal ring 5 distortion elastic force in fluid promotion piston 2 and the seal ring 5, lay in back edge simultaneously, brake shoe 12 is pressed to braked part 15, eliminate and move axially space 4 and brake clearance, and friction catch.
In the time need not braking, under the deposit back edge effect of seal ring 5, pulling piston 2, elastic component 10 or 13, brake shoe 12 and fluid return recover to move axially space 4 and brake clearance, keep running well.
Claims (8)
1. hydraulic brake, install in proper order and form by brake cylinder, seal groove, seal ring, piston, drag friction part and braked part, wherein, seal ring by piston and seal groove at the bottom of crush seal and be divided into inner room with outside, it is characterized in that: in the scope of seal ring or the space that moves axially of seal ring is set in the scope of seal groove.
2. hydraulic brake according to claim 1 is characterized in that: this moves axially the space is annular, is arranged between the seal ring outside and the seal ring cell wall.
3. hydraulic brake according to claim 2 is characterized in that: this section that moves axially space, seal ring, seal groove three is respectively trapezoidal or approximate trapezoid or approximate " V " font or " V " font or approximate △ shape or approximate rectangular.
4. hydraulic brake according to claim 3 is characterized in that: circular shaft is grown up in cylindrical axial length in the seal ring, and the maximum diameter of seal ring and seal groove is inclined to the outside respectively.
5. according to claim 1,2,3 described hydraulic brakes, it is characterized in that: outside piston that be shaped on coaxial line with the annular groove seal ring sealing; Make Flexible Connector, piston is connected with the drag friction part.
6. hydraulic brake, install in proper order by brake cylinder, seal groove, seal ring, piston, brake shoe or clamping strap, braked part and to form, seal ring is divided into inner room with outside by piston and seal groove crush seal, it is characterized in that: in the brake oil cylinder body, make seal groove, in the scope of seal ring or the space that moves axially of seal ring is set in the scope of seal groove.
7. hydraulic brake according to claim 6 is characterized in that: this section that moves axially space, seal ring, seal groove three is respectively trapezoidal or approximate trapezoid or approximate " V " font or approximate △ shape or like rectangle.
8. hydraulic brake according to claim 7 is characterized in that: outside piston is shaped on annular groove coaxial and the seal ring sealing; Elastic component is set, piston is connected with brake shoe or clamping strap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100656679A CN101988550A (en) | 2009-08-06 | 2009-08-06 | Hydraulic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100656679A CN101988550A (en) | 2009-08-06 | 2009-08-06 | Hydraulic brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101988550A true CN101988550A (en) | 2011-03-23 |
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ID=43745259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100656679A Pending CN101988550A (en) | 2009-08-06 | 2009-08-06 | Hydraulic brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101988550A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114444A (en) * | 2015-09-10 | 2015-12-02 | 河南科技大学 | Joint mechanism with adjustable rotary damping force |
| GB2540814A (en) * | 2015-07-30 | 2017-02-01 | Jaguar Land Rover Ltd | Brake calliper |
| CN107477112A (en) * | 2017-08-25 | 2017-12-15 | 浙江吉利新能源商用车有限公司 | A kind of disk brake for vehicle |
| CN110541899A (en) * | 2019-09-09 | 2019-12-06 | 中车青岛四方车辆研究所有限公司 | Hydraulic braking clamp |
| CN113124072A (en) * | 2021-02-26 | 2021-07-16 | 江苏开沃汽车有限公司 | Multi-brake-shoe drum brake and working method |
-
2009
- 2009-08-06 CN CN2009100656679A patent/CN101988550A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2540814A (en) * | 2015-07-30 | 2017-02-01 | Jaguar Land Rover Ltd | Brake calliper |
| GB2540814B (en) * | 2015-07-30 | 2017-11-08 | Jaguar Land Rover Ltd | Brake caliper |
| GB2551301A (en) * | 2015-07-30 | 2017-12-13 | Jaguar Land Rover Ltd | Brake caliper |
| CN105114444A (en) * | 2015-09-10 | 2015-12-02 | 河南科技大学 | Joint mechanism with adjustable rotary damping force |
| CN105114444B (en) * | 2015-09-10 | 2018-05-01 | 河南科技大学 | A kind of adjustable articulation mechanism of rotary damping power |
| CN107477112A (en) * | 2017-08-25 | 2017-12-15 | 浙江吉利新能源商用车有限公司 | A kind of disk brake for vehicle |
| CN107477112B (en) * | 2017-08-25 | 2019-10-29 | 浙江吉利新能源商用车有限公司 | A kind of disk brake for vehicle |
| CN110541899A (en) * | 2019-09-09 | 2019-12-06 | 中车青岛四方车辆研究所有限公司 | Hydraulic braking clamp |
| CN113124072A (en) * | 2021-02-26 | 2021-07-16 | 江苏开沃汽车有限公司 | Multi-brake-shoe drum brake and working method |
| CN113124072B (en) * | 2021-02-26 | 2024-03-12 | 江苏开沃汽车有限公司 | Multi-brake shoe drum brake and working method |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110323 |