CN105422693A - Brake wheel cylinder provided with guide pin - Google Patents
Brake wheel cylinder provided with guide pin Download PDFInfo
- Publication number
- CN105422693A CN105422693A CN201510974793.1A CN201510974793A CN105422693A CN 105422693 A CN105422693 A CN 105422693A CN 201510974793 A CN201510974793 A CN 201510974793A CN 105422693 A CN105422693 A CN 105422693A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- guide finger
- spring
- wheel cylinder
- 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
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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
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- 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
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a brake wheel cylinder provided with a guide pin. The brake wheel cylinder comprises a cylinder body (1), pistons (4), a spring (2) and an oil inlet connector, wherein the pistons (4) block the two ends of the cylinder body (1), two opposite end faces of the two pistons (4) are partly hollowed inwards in the axial direction to form positioning grooves, and the two ends of the spring (2) stretch into the positioning grooves respectively and are fixedly connected with groove bottoms of the two positioning grooves; the guide pin (3) is arranged in the spring (2) in a penetrating manner; one end of the guide pin (3) is fixedly connected with the groove bottom of one positioning groove; the guide pin (3), the spring (2) and the positioning grooves are coaxially arranged, so as to allow the two pistons (4) to be able to make reciprocating motion in the axial direction of the cylinder body (1) to draw or compress the spring (2); and the oil inlet connector is mounted on the cylinder body (1), and is communicated with a cavity body, positioned between the two pistons (4), in the cylinder body (1). The brake wheel cylinder is simple in structure, the spring in the cylinder body draws the pistons to return smoothly, and the safety coefficient is high.
Description
Technical field
The present invention relates to brake system of car, particularly, relate to the wheel cylinder with guide finger.
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 can produce deformation 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 a kind of wheel cylinder and solve the above problem.
Summary of the invention
The object of this invention is to provide a kind of wheel cylinder with guide finger, this wheel cylinder structure is simple, and the spring traction piston revert in cylinder body is smooth and easy, and safety coefficient is high.
To achieve these goals, the invention provides a kind of wheel cylinder with guide finger, wheel cylinder comprise cylinder body, be blocked in the piston at cylinder body two ends, spring and oil-feed interface; Wherein, two end faces relative on two pistons in the axial direction part cave inward formation locating slot, and the two ends of spring to extend into respectively in locating slot and are fixed on two locating slot bottom lands; The inside of spring is also run through and is provided with a guide finger, one end of guide finger to be fixed on a wherein locating slot bottom land and guide finger, spring and locating slot coaxially arrange to make two pistons can respectively along the axial direction to-and-fro motion of cylinder body to stretch or Compress Spring; Oil-feed interface to be arranged on cylinder body and to be connected with the cavity in cylinder body between two pistons.
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 piston, 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, piston is covered with protecting cover from the part that the inner ring of dust-proof cover is outstanding.
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.
Preferably, cylinder body is also provided with bleed passage, in bleed passage, bleed screw is installed, bleed screw is covered with venting cap.
Preferably, on oil-feed interface, blocking is provided with dust plug.
According to technique scheme, the plunger designs being blocked in cylinder body two ends becomes one end end face to cave inward in the axial direction formation locating slot by the present invention, and the other end is connected with the brake pushrod in brake system of car.The two ends of spring to extend into respectively in locating slot and are fixed on two locating slot bottom lands; The inside of spring is also run through and is provided with a guide finger, one end of guide finger be fixed in wherein on a locating slot bottom land and guide finger, spring and locating slot coaxially arrange.When to enter to the cavity in cylinder body from filler opening when oil, the piston that just extruding is positioned at cylinder body two ends outwards slides, and now that spring elongation is 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, the spring stretched is that the piston that two ends connect pulls by reinstatement again in cylinder body, because spring housing is located on guide finger, make that spring can not be random in recovery process bending or reverse, ensure that piston recovers smooth and easy and timely, improve the Safety performance of whole wheel cylinder.
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 according to the structural representation with the wheel cylinder of guide finger in a kind of mode of execution provided by the invention;
Fig. 2 is according to the sectional view with the wheel cylinder of guide finger in a kind of mode of execution provided by the invention.
Description of reference numerals
1-cylinder body 2-spring
3-guide finger 4-piston
5-seal ring 6-dust-proof cover
7-protecting cover 8-bleed screw
9-venting cap 10-dust plug
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 wheel cylinder with guide finger, wheel cylinder comprises cylinder body 1, is blocked in the piston 4 at cylinder body 1 two ends, spring 2 and oil-feed interface; Wherein, two end faces relative on two pistons 4 in the axial direction part cave inward formation locating slot, and the two ends of spring 2 to extend into respectively in locating slot and are fixed on two locating slot bottom lands; The inside of spring 2 is also run through and is provided with a guide finger 3, one end of guide finger 3 to be fixed on a wherein locating slot bottom land and guide finger 3, spring 2 and locating slot coaxially arrange to make two pistons 4 can respectively along the axial direction to-and-fro motion of cylinder body 1 to stretch or Compress Spring 2; Oil-feed interface to be arranged on cylinder body 1 and to be connected with the cavity in cylinder body 1 between two pistons 4.
By technique scheme, the piston 4 being blocked in cylinder body 1 two ends is designed to one end end face and caves inward in the axial direction formation locating slot, the other end is connected with the brake pushrod in brake system of car.The two ends of spring 2 to extend into respectively in locating slot and are fixed on two locating slot bottom lands; The inside of spring 2 is also run through and is provided with a guide finger 3, one end of guide finger 3 be fixed in wherein on a locating slot bottom land and guide finger 3, spring 2 and locating slot coaxially arrange.When to enter to the cavity in cylinder body 1 from filler opening when oil, the piston 4 that just extruding is positioned at cylinder body 1 two ends outwards slides, and now stretch elongated by spring 2, the brake pushrod driving automobile brake shoe be connected with piston 4 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, the spring 2 stretched is piston 4 pulling in cylinder body 1 again connected at two ends that restores to the original state, because spring 2 is set on guide finger 3, make that spring 2 can not be random in recovery process bending or reverse, ensure that piston 4 recovers smooth and easy and timely, improve the Safety performance of whole wheel cylinder.
In present embodiment, in order to prevent the dust of wheel cylinder outside or other foreign material from dropping on the movement locus of piston 4, piston 4 slidably reciprocating at cylinder body 1 axial direction can be hindered through long-time accumulation, causing piston 4 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 piston 4, and outer shroud removably stuffing box gland is located on the outer wall of cylinder body 1.
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.
In addition, establish or close protecting cover 7, increase work efficiency for the ease of lid, preferred piston 4 is covered with protecting cover 7 from the part that the inner ring of dust-proof cover 6 is outstanding.
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 4, 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 4 in cavity from spilling from the gap between piston 4 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 4, circumferentially direction part caves inward formation groove, and groove is embedded with seal ring 5.
Further, in order to improve sealing in piston movement process and smooth and easy degree, preferably, seal ring 5 is y-type seal ring.Like this, because the sealability of y-type seal ring is reliable, surface friction drag is little simultaneously, and stable movement, makes piston 4 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 4, 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 8 is installed in bleed passage, bleed screw 8 is covered with venting cap 9.
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 4 slide, preferably, on oil-feed interface, blocking is provided with dust plug 10.
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. have a wheel cylinder for guide finger, it is characterized in that, described wheel cylinder comprises cylinder body (1), is blocked in the piston (4) at described cylinder body (1) two ends, spring (2) and oil-feed interface; Wherein, upper two the relative end faces of two described pistons (4) in the axial direction part cave inward formation locating slot, and the two ends of described spring (2) to extend into respectively in described locating slot and are fixed on two described locating slot bottom lands; The inside of described spring (2) is also run through and is provided with a guide finger (3), one end of described guide finger (3) to be fixed on wherein locating slot bottom land described in one and described guide finger (3), spring (2) and locating slot coaxially arrange to make two described pistons (4) can respectively along the axial direction to-and-fro motion of described cylinder body (1) to stretch or to compress described spring (2); 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 (4) in described cylinder body (1).
2. the wheel cylinder with guide finger according to claim 1, 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 piston (4), and outer shroud removably stuffing box gland is located on the outer wall of described cylinder body (1).
3. the wheel cylinder with guide finger according to claim 2, 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.
4. the wheel cylinder with guide finger according to claim 2, is characterized in that, described piston (4) is covered with protecting cover (7) from the part that the inner ring of described dust-proof cover (6) is outstanding.
5. the wheel cylinder with guide finger according to claim 2, is characterized in that, described dust-proof cover (6) is bellows.
6. the wheel cylinder with guide finger according to claim 1, is characterized in that, on the outer wall of described piston (4), circumferentially direction part caves inward formation groove, and described groove is embedded with seal ring (5).
7. the wheel cylinder with guide finger according to claim 6, is characterized in that, described seal ring (5) is y-type seal ring.
8. the wheel cylinder with guide finger according to claim 1, it is characterized in that, (1) is also provided with bleed passage to described cylinder body, bleed screw (8) is installed in described bleed passage, described bleed screw (8) is covered with venting cap (9).
9. the wheel cylinder with guide finger according to claim 1, is characterized in that, on described oil-feed interface, blocking is provided with dust plug (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974793.1A CN105422693A (en) | 2015-12-22 | 2015-12-22 | Brake wheel cylinder provided with guide pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974793.1A CN105422693A (en) | 2015-12-22 | 2015-12-22 | Brake wheel cylinder provided with guide pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105422693A true CN105422693A (en) | 2016-03-23 |
Family
ID=55501145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510974793.1A Pending CN105422693A (en) | 2015-12-22 | 2015-12-22 | Brake wheel cylinder provided with guide pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105422693A (en) |
Citations (6)
| 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 |
| CN2538640Y (en) * | 2002-04-22 | 2003-03-05 | 姚爱中 | Automobile braking wheel cylinder capable of bidirectionally regulating braking gap |
| CN202301618U (en) * | 2011-09-23 | 2012-07-04 | 芜湖恒坤汽车部件有限公司 | Piston for guide brake cylinder |
| CN202301658U (en) * | 2011-09-09 | 2012-07-04 | 芜湖恒坤汽车部件有限公司 | Double-piston brake cylinder assembly with guide rods |
| CN203098664U (en) * | 2012-12-11 | 2013-07-31 | 芜湖恒坤汽车部件有限公司 | Wheel-brake cylinder provided with conical spring |
| CN104265808A (en) * | 2014-09-11 | 2015-01-07 | 河南飞龙(芜湖)汽车零部件有限公司 | Combined brake wheel cylinder |
-
2015
- 2015-12-22 CN CN201510974793.1A patent/CN105422693A/en active Pending
Patent Citations (6)
| 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 |
| CN2538640Y (en) * | 2002-04-22 | 2003-03-05 | 姚爱中 | Automobile braking wheel cylinder capable of bidirectionally regulating braking gap |
| CN202301658U (en) * | 2011-09-09 | 2012-07-04 | 芜湖恒坤汽车部件有限公司 | Double-piston brake cylinder assembly with guide rods |
| CN202301618U (en) * | 2011-09-23 | 2012-07-04 | 芜湖恒坤汽车部件有限公司 | Piston for guide brake cylinder |
| CN203098664U (en) * | 2012-12-11 | 2013-07-31 | 芜湖恒坤汽车部件有限公司 | Wheel-brake cylinder provided with conical spring |
| CN104265808A (en) * | 2014-09-11 | 2015-01-07 | 河南飞龙(芜湖)汽车零部件有限公司 | Combined brake wheel cylinder |
Non-Patent Citations (1)
| Title |
|---|
| 周超梅,杜弘 等: "《汽车工程材料》", 31 January 2013, 北京：机械工业出版社 * |
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| 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: 20160323 |
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| RJ01 | Rejection of invention patent application after publication |