CN105443620A - Double-spring brake wheel cylinder - Google Patents
Double-spring brake wheel cylinder Download PDFInfo
- Publication number
- CN105443620A CN105443620A CN201510975774.0A CN201510975774A CN105443620A CN 105443620 A CN105443620 A CN 105443620A CN 201510975774 A CN201510975774 A CN 201510975774A CN 105443620 A CN105443620 A CN 105443620A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- wheel cylinder
- springs
- ring
- pistons
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/06—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/08—Seals, e.g. piston seals
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a double-spring brake wheel cylinder. The brake wheel cylinder comprises a cylinder body, pistons blocked at two ends of the cylinder body, two springs and an oil inlet joint; two opposite end surfaces of the two pistons are partially inwards recessed to form positioning ring grooves in the axis direction; the two ends of the springs respectively extend into the positioning ring grooves, and are fixedly connected to the bottoms of the two positioning ring grooves; the two pistons can respectively perform a reciprocating motion in the axis direction of the cylinder body to stretch or compress the springs; the central axis of the two springs and the central axis of the cylinder body are positioned in the same extension surface; and the oil inlet joint is mounted on the cylinder body, and is communicated with a cavity between the two pistons in the cylinder body. At least two springs are arranged in the cylinder body of the double-spring brake wheel cylinder, so that the tension of the springs to the two pistons moving in the cylinder body is more uniform, the damage of the springs caused by nonuniform stress is effectively prevented, and the service life of the whole brake wheel cylinder is prolonged.
Description
Technical field
The present invention relates to brake system of car, particularly, relate to a kind of dual spring wheel cylinder.
Background technique
Automobile brake wheel cylinder is arranged in automotive wheel wheel disc, for the braking of automobile, is the important device ensureing automotive safety braking, usually adopts common hydraulic type wheel cylinder, generally comprise cylinder body, piston, spring oil nozzle etc. in general automobile.
Though spring is equipped with to be returned to by the piston stretched out from cylinder body two ends in cylinder body to stop the braking to automotive wheel in existing wheel cylinder inside, but because spring is single, and can deformation be produced after repeatedly pulling, make to deflect to the pulling power thrusts of piston, cause the resilience of piston smooth and easy not, affect the control for brake opportunity of whole wheel cylinder, exist in potential potential safety hazard.
Therefore, be badly in need of providing a kind of inside to have the automobile brake wheel cylinder of two or many springs.
Summary of the invention
The object of this invention is to provide a kind of dual spring wheel cylinder, at least two springs are provided with in the cylinder body of this dual spring wheel cylinder, make the pulling force of spring to move in cylinder body two pieces of pistons more even, effectively prevent spring stress uneven impaired, extend the working life of whole wheel cylinder.
To achieve these goals, the invention provides a kind of dual spring wheel cylinder, wheel cylinder comprise cylinder body, be blocked in the piston at cylinder body two ends, two springs and oil-feed interface; Two end faces relative on two pistons in the axial direction part cave inward formation positioning ring groove, the two ends of spring to extend into respectively in positioning ring groove and are fixed on two positioning ring groove bottom lands, and two pistons can respectively along the axial direction to-and-fro motion of cylinder body to stretch or Compress Spring; Wherein, the central axis of two springs and the central axis of cylinder body are positioned at same extended surface; Oil-feed interface to be arranged on cylinder body and to be connected with the cavity in cylinder body between two pistons.
Preferably, piston is provided with the push rod for being connected with automobile brake shoe, the mounting end of push rod and automobile brake shoe removably installs block by snak link.
Preferably, the two ends of cylinder body are covered with the dust-proof cover of annular respectively, and the inner ring of dust-proof cover is fixed on push rod, and outer shroud removably stuffing box gland is located on the outer wall of cylinder body.
Preferably, cylinder body port phase flanging is formed with the first snatch ring, the inner ring of dust-proof cover is formed and can matches with the second snatch ring of sealed cylinder block with the first snatch ring.
Preferably, dust-proof cover is bellows.
Preferably, on the outer wall of piston, circumferentially direction part caves inward formation groove, and groove is embedded with seal ring.
Preferably, seal ring is y-type seal ring, is also provided with pad ring between y-type seal ring and the side of groove.
Preferably, cylinder body is also provided with bleed passage, is provided with in bleed passage on bleed screw and is covered with venting cap.
Preferably, on oil-feed interface, blocking is provided with dust plug.
According to technique scheme, the present invention by be blocked in two end faces relative on the piston at cylinder body two ends in the axial direction part to cave inward formation positioning ring groove, the two ends of spring to extend into respectively in positioning ring groove and are fixed on two positioning ring groove bottom lands.When to enter to the cavity in cylinder body from filler opening when oil, just extrude the piston being positioned at cylinder body two ends outwards to slide, now two spring uniform stresseds and stretch elongated, the brake pushrod driving automobile brake shoe be connected with piston embraces automotive wheel wheel hub to reach the object of braking.When after end of braking, oil to reflux out cylinder body from oil-feed interface, two springs originally stretched are that the piston that two ends connect pulls by reinstatement again in cylinder body, because two springs evenly apply pulling force, make piston movement more smooth and easy, avoid single camber of spring force and the return motion of piston drawn high direction skew, improve whole wheel cylinder Security.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation according to the dual spring wheel cylinder in a kind of mode of execution provided by the invention;
Fig. 2 is the sectional view according to the dual spring wheel cylinder in a kind of mode of execution provided by the invention.
Description of reference numerals
1-cylinder body 2-piston
3-spring 4-seal ring
5-pad ring 6-dust-proof cover
7-push rod 8-dust plug
9-bleed screw 10-exits cap
11-snak link
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the nouns of locality be included in term such as " inside and outside " only represents the orientation of this term under normal service condition, or being commonly called as those skilled in the art's understanding, and should not be considered as the restriction to this term.
See Fig. 1, the invention provides a kind of dual spring wheel cylinder, wheel cylinder comprises cylinder body 1, is blocked in piston 2, two springs 3 at cylinder body 1 two ends and oil-feed interface; Two end faces relative on two pistons 2 in the axial direction part cave inward formation positioning ring groove, the two ends of spring 3 to extend into respectively in positioning ring groove and are fixed on two positioning ring groove bottom lands, and two pistons 2 can respectively along the axial direction to-and-fro motion of cylinder body 1 to stretch or Compress Spring 3; Wherein, the central axis of two springs 3 and the central axis of cylinder body 1 are positioned at same extended surface; Oil-feed interface to be arranged on cylinder body 1 and to be connected with the cavity in cylinder body 1 between two pistons 2.
By technique scheme, by be blocked in two end faces relative on the piston 2 at cylinder body 1 two ends in the axial direction part to cave inward formation positioning ring groove, the two ends of spring 3 to extend into respectively in positioning ring groove and are fixed on two positioning ring groove bottom lands.When to enter to the cavity in cylinder body 1 from filler opening when oil, just extrude the piston 2 being positioned at cylinder body 1 two ends outwards to slide, now two spring 3 uniform stresseds and stretch elongated, the brake pushrod driving automobile brake shoe be connected with piston 2 embraces automotive wheel wheel hub to reach the object of braking.When after end of braking, oil to reflux out cylinder body 1 from oil-feed interface, two springs 3 originally stretched are piston 2 pulling in cylinder body 1 again connected at two ends that restores to the original state, because two springs 3 evenly apply pulling force, piston 2 is moved more smooth and easy, avoid single spring 3 distortion force and the return motion of piston 2 drawn high direction skew, improve whole wheel cylinder Security.
In the present embodiment, in order to make the connection activity between piston 2 and automobile brake shoe more flexible, activity direction is more changeable, and be convenient to disassemble and carry out parts/maintenance, preferably, piston 2 is provided with the push rod 7 for being connected with automobile brake shoe, push rod 7 removably installs block with the mounting end of automobile brake shoe by snak link 11.
In order to prevent the dust of wheel cylinder outside or other foreign material from dropping on the movement locus of piston 2, piston 2 slidably reciprocating at cylinder body 1 axial direction can be hindered through long-time accumulation, causing piston 2 activity to have some setbacks, affecting braking effect; Preferably, the two ends of cylinder body 1 are covered with the dust-proof cover 6 of annular respectively, and the inner ring of dust-proof cover 6 is fixed on push rod 7, and outer shroud removably stuffing box gland is located on the outer wall of cylinder body 1.
In present embodiment, pulled back and forth in wheel cylinder using process to prevent dust-proof cover 6 and come off, improve it and be connected to stability on cylinder body 1, preferably, cylinder body 1 port phase flanging is formed with the first snatch ring, the inner ring of dust-proof cover 6 is formed and can matches with the second snatch ring of sealed cylinder block 1 with the first snatch ring.
Above-mentioned dust-proof cover 6 can be the dust-proof barrier that any one common in related domain has good telescopicing performance, but considers from controlling cost and being convenient to change the angle of drawing materials, and preferably, dust-proof cover 6 is bellows.
Slidably reciprocate in process at piston 2, in order in guarantee, it slides smoothly simultaneously, improve the sealing between its outer wall and cylinder body 1 inwall, prevent the oil between two pieces of pistons 2 in cavity from spilling from the gap between piston 2 outer wall and cylinder body 1 inwall, the working environment of severe contamination wheel cylinder and cause oil mass to waste, on the outer wall of preferred piston 2, circumferentially direction part caves inward formation groove, and groove is embedded with seal ring 4.
Further, in order to improve sealing in piston movement process and smooth and easy degree, preferably, seal ring 4 is y-type seal ring, is also provided with pad ring 5 between y-type seal ring and the side of groove.Like this, because the sealability of y-type seal ring is reliable, surface friction drag is little simultaneously, and stable movement, makes piston 2 smooth and easy more flexibly in reciprocatory movement; And the resistance to pressure of y-type seal ring is good, the scope being suitable for pressure is wide, therefore has good resistance to pressure to the oil injected in cavity between two pieces of pistons 2, improves the sealing effect of cavity, ensure that the normal operation of whole wheel cylinder.
Injected in cylinder body 1 by oil-feed interface oil process, owing to the air in the external world together being squeezed in cylinder body 1 containing when bubble or oiling in the oil that adds, cause assembling in cylinder body 1 have gas, the air pressure that gas is formed hinders oil to continue to enter, in order to avoid the generation of above-mentioned situation, convenient and swift in time by the gas discharge in cylinder body 1, as shown in Figure 2, preferably, cylinder body 1 is also provided with bleed passage, bleed screw 9 is installed in bleed passage, bleed screw 9 is covered with venting cap 10.
Wheel cylinder do not use or repair and replacement process in, in order to prevent extraneous foreign material from oil-feed interface enter in cylinder body 1 cylinder body 1 is caused damage or has a strong impact on use time piston 2 slide, preferably, on oil-feed interface, blocking is provided with dust plug 8.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. a dual spring wheel cylinder, is characterized in that, described wheel cylinder comprises cylinder body (1), is blocked in the piston (2) at described cylinder body (1) two ends, two springs (3) and oil-feed interface; Upper two the relative end faces of two described pistons (2) in the axial direction part cave inward formation positioning ring groove, the two ends of described spring (3) to extend into respectively in described positioning ring groove and are fixed on two described positioning ring groove bottom lands, and two described pistons (2) can respectively along the axial direction to-and-fro motion of described cylinder body (1) to stretch or to compress described spring (3); Wherein, the central axis of two described springs (3) and the central axis of described cylinder body (1) are positioned at same extended surface; Described oil-feed interface is arranged on described cylinder body (1) and goes up and be connected with the cavity be positioned between two described pistons (2) in described cylinder body (1).
2. dual spring wheel cylinder according to claim 1, it is characterized in that, described piston (2) is provided with the push rod (7) for being connected with automobile brake shoe, described push rod (7) removably installs block with the mounting end of described automobile brake shoe by snak link (11).
3. dual spring wheel cylinder according to claim 2, it is characterized in that, the two ends of described cylinder body (1) are covered with the dust-proof cover (6) of annular respectively, the inner ring of described dust-proof cover (6) is fixed on described push rod (7), and outer shroud removably stuffing box gland is located on the outer wall of described cylinder body (1).
4. dual spring wheel cylinder according to claim 3, it is characterized in that, described cylinder body (1) port phase flanging is formed with the first snatch ring, the inner ring of described dust-proof cover (6) is formed and can matches to seal the second snatch ring of described cylinder body (1) with described first snatch ring.
5. dual spring wheel cylinder according to claim 3, is characterized in that, described dust-proof cover (6) is bellows.
6. dual spring wheel cylinder according to claim 1, is characterized in that, on the outer wall of described piston (2), circumferentially direction part caves inward formation groove, and described groove is embedded with seal ring (4).
7. dual spring wheel cylinder according to claim 6, is characterized in that, described seal ring (4) is y-type seal ring, is also provided with pad ring (5) between the side of described y-type seal ring and described groove.
8. dual spring wheel cylinder according to claim 1, it is characterized in that, (1) is also provided with bleed passage to described cylinder body, is provided with bleed screw (9) in described bleed passage, described bleed screw (9) is covered with venting cap (10).
9. dual spring wheel cylinder according to claim 1, is characterized in that, on described oil-feed interface, blocking is provided with dust plug (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510975774.0A CN105443620A (en) | 2015-12-22 | 2015-12-22 | Double-spring brake wheel cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510975774.0A CN105443620A (en) | 2015-12-22 | 2015-12-22 | Double-spring brake wheel cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105443620A true CN105443620A (en) | 2016-03-30 |
Family
ID=55554146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510975774.0A Pending CN105443620A (en) | 2015-12-22 | 2015-12-22 | Double-spring brake wheel cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105443620A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01228634A (en) * | 1988-03-08 | 1989-09-12 | Nippon Air Brake Co Ltd | Manufacture of piston for wheel cylinder |
| CN102364149A (en) * | 2011-09-22 | 2012-02-29 | 芜湖恒坤汽车部件有限公司 | Bidirectional brake wheel cylinder assembly |
| CN102518712A (en) * | 2011-12-09 | 2012-06-27 | 芜湖博格汽车零部件有限公司 | Wheel cylinder for automobile |
| CN203098685U (en) * | 2012-12-18 | 2013-07-31 | 芜湖恒坤汽车部件有限公司 | Rear-left brake cylinder of truck |
| CN104265809A (en) * | 2014-09-11 | 2015-01-07 | 河南飞龙(芜湖)汽车零部件有限公司 | Brake wheel cylinder |
-
2015
- 2015-12-22 CN CN201510975774.0A patent/CN105443620A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01228634A (en) * | 1988-03-08 | 1989-09-12 | Nippon Air Brake Co Ltd | Manufacture of piston for wheel cylinder |
| CN102364149A (en) * | 2011-09-22 | 2012-02-29 | 芜湖恒坤汽车部件有限公司 | Bidirectional brake wheel cylinder assembly |
| CN102518712A (en) * | 2011-12-09 | 2012-06-27 | 芜湖博格汽车零部件有限公司 | Wheel cylinder for automobile |
| CN203098685U (en) * | 2012-12-18 | 2013-07-31 | 芜湖恒坤汽车部件有限公司 | Rear-left brake cylinder of truck |
| CN104265809A (en) * | 2014-09-11 | 2015-01-07 | 河南飞龙(芜湖)汽车零部件有限公司 | Brake wheel cylinder |
Non-Patent Citations (2)
| Title |
|---|
| 周超梅，杜弘: "《汽车工程材料》", 31 January 2013, 北京：机械工业出版社 * |
| 国家机械工业行业局行业管理司；国家国内贸易局设备成套管理局: "《中国机电产品大辞典》", 30 September 1999 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106838102B (en) | Shock absorber rod guide and seal unit | |
| CN206159317U (en) | Integrative arresting gear of automobile -used capable parking | |
| CN202251231U (en) | Hydraulic cylinder end cover | |
| CN106015396A (en) | Traveling and parking integrated braking device for automobile | |
| CN105782331A (en) | Heavy-duty damper for heavy industries and roads | |
| CN104632752A (en) | Novel hydraulic cylinder with buffer function | |
| CN202718962U (en) | Guiding structure of hydraulic oil cylinder | |
| CN105443620A (en) | Double-spring brake wheel cylinder | |
| CN204493571U (en) | A kind of anti-collision rear shock absorber | |
| CN204213243U (en) | A kind of dust-proof lubricating damper | |
| CN105465241A (en) | Brake wheel cylinder provided with special-shaped pistons | |
| CN104279338A (en) | Large-deformation self-compensation sealing structure | |
| CN103089901A (en) | Guider oil seal assembly and damper | |
| CN105422693A (en) | Brake wheel cylinder provided with guide pin | |
| CN203796817U (en) | Brake pump | |
| CN105422695A (en) | Brake wheel cylinder with fastening screw | |
| CN105443622A (en) | Springless braking single-wheel cylinder | |
| CN105443621A (en) | Brake wheel cylinder with guard covers at two ends | |
| CN102364149A (en) | Bidirectional brake wheel cylinder assembly | |
| CN105443623A (en) | Brake single-wheel cylinder | |
| CN105508472A (en) | Vehicle brake wheel cylinder | |
| CN105108700A (en) | Assembling tool of valve guide pipe | |
| CN105443624A (en) | Brake single-wheel cylinder with adjusting screw | |
| CN105465221A (en) | Clutch master cylinder | |
| CN105570340A (en) | Clutch cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |
|
| RJ01 | Rejection of invention patent application after publication |