CN105422695A - Brake wheel cylinder with fastening screw - Google Patents
Brake wheel cylinder with fastening screw Download PDFInfo
- Publication number
- CN105422695A CN105422695A CN201510975956.8A CN201510975956A CN105422695A CN 105422695 A CN105422695 A CN 105422695A CN 201510975956 A CN201510975956 A CN 201510975956A CN 105422695 A CN105422695 A CN 105422695A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- fastening screw
- trip bolt
- wheel cylinder
- screw trip
- 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
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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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/11—Application
- F16D2500/1107—Vehicles
Abstract
The invention discloses a brake wheel cylinder with a fastening screw. The brake wheel cylinder comprises a cylinder body (1), pistons (5) blocking the two ends of the cylinder body (1), the fastening screw (2) and an oil inlet port, wherein the two opposite end surfaces on the two pistons (5) are partially concave inwards in the axial direction to form internal thread grooves; fixing rings (3) are arranged at the top ends of the internal thread grooves; the fastening screw (2) can penetrate through the fixing rings (3) and extend into the internal thread grooves to be fixedly connected with the internal thread grooves in a matching manner; the two pistons (5) can perform reciprocating motion in the axial direction of the cylinder body (1); and the oil inlet port is formed in the cylinder body (1), and is communicated with a cavity, positioned between the two pistons (5), in the cylinder body (1). According to the brake wheel cylinder, the structure is simple, and the pistons can achieve reciprocating motion in the cylinder body through using the oil pressure variation in the cylinder body.
Description
Technical field
The present invention relates to brake system of car, particularly, relate to a kind of wheel cylinder with fastening screw trip bolt.
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 fastening screw trip bolt, this wheel cylinder structure is simple, the oil pressure in cylinder body can be utilized to change and realize the to-and-fro motion of piston in cylinder body.
To achieve these goals, the invention provides a kind of wheel cylinder with fastening screw trip bolt, wheel cylinder comprise cylinder body, be blocked in the piston at cylinder body two ends, fastening screw trip bolt and oil-feed interface; Wherein, two end faces relative on two pistons partly cave inward in the axial direction and form internal thread groove, and the top of internal thread groove is provided with retainer ring, and fastening screw trip bolt can pass retainer ring and extend in internal thread groove affixed with internal thread slot fit; Two pistons can respectively along the axial direction to-and-fro motion of cylinder body, and 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, 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 present invention forms internal thread groove by being blocked in two end face sunken insides relative on two pistons at cylinder body two ends, by fastening screw trip bolt, retainer ring is fixed on this end face, improves the airtight performance in the space between two pieces of pistons further.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 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 is extracted out from oil-feed interface, and the air pressure in cylinder body reduces, and barometric pressure just two ends piston extrudes again in cylinder body, and automobile brake shoe is separated to stop brake operating with hub for vehicle wheel.This wheel cylinder is simple to operation, and can switch braking state rapidly, Safety performance is better.
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 fastening screw trip bolt in a kind of mode of execution provided by the invention;
Fig. 2 is according to the sectional view with the wheel cylinder of fastening screw trip bolt in a kind of mode of execution provided by the invention.
Description of reference numerals
1-cylinder body 2-fastening screw trip bolt
3-retainer ring 4-seal ring
5-piston 6-dust-proof cover
7-dust plug 8-bleed screw
9-exits cap
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 fastening screw trip bolt, wheel cylinder comprises cylinder body 1, is blocked in the piston 5 at cylinder body 1 two ends, fastening screw trip bolt 2 and oil-feed interface; Wherein, two end faces relative on two pistons 5 partly cave inward in the axial direction and form internal thread groove, and the top of internal thread groove is provided with retainer ring 3, and fastening screw trip bolt 2 can pass retainer ring 3 and extend in internal thread groove affixed with internal thread slot fit; Two pistons 5 can respectively along the axial direction to-and-fro motion of cylinder body 1, and oil-feed interface to be arranged on cylinder body 1 and to be connected with the cavity in cylinder body 1 between two pistons 5.
Pass through technique scheme, internal thread groove is formed by being blocked in two end face sunken insides relative on two pistons 5 at cylinder body 1 two ends, by fastening screw trip bolt 2, retainer ring 3 is fixed on this end face, improves the airtight performance in the space between two pieces of pistons 5 further.When to enter to the cavity in cylinder body 1 from filler opening when oil, the piston 5 that just extruding is positioned at cylinder body 1 two ends outwards slides, and the brake pushrod driving automobile brake shoe be connected with piston 5 embraces automotive wheel wheel hub to reach the object of braking.When after end of braking, oil is extracted out from oil-feed interface, and the air pressure in cylinder body 1 reduces, and barometric pressure just two ends piston 5 extrudes again in cylinder body 1, and automobile brake shoe is separated to stop brake operating with hub for vehicle wheel.This wheel cylinder is simple to operation, and can switch braking state rapidly, Safety performance is better.
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 5, piston 5 slidably reciprocating at cylinder body 1 axial direction can be hindered through long-time accumulation, causing piston 5 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 5, 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.
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 5, 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 5 in cavity from spilling from the gap between piston 5 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 5, 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.Like this, because the sealability of y-type seal ring is reliable, surface friction drag is little simultaneously, and stable movement, makes piston 5 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 5, 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 7.
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 (8)
1. have a wheel cylinder for fastening screw trip bolt, it is characterized in that, described wheel cylinder comprises cylinder body (1), is blocked in the piston (5) at described cylinder body (1) two ends, fastening screw trip bolt (2) and oil-feed interface; Wherein, two upper two relative end faces of described piston (5) partly cave inward in the axial direction and form internal thread groove, the top of described internal thread groove is provided with retainer ring (3), and described fastening screw trip bolt (2) can pass described retainer ring (3) and extend in described internal thread groove affixed with described internal thread slot fit; Two described pistons (5) can respectively along the axial direction to-and-fro motion of described cylinder body (1), and 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 (5) in described cylinder body (1).
2. the wheel cylinder with fastening screw trip bolt 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 (5), and outer shroud removably stuffing box gland is located on the outer wall of described cylinder body (1).
3. the wheel cylinder with fastening screw trip bolt 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 fastening screw trip bolt according to claim 2, is characterized in that, described dust-proof cover (6) is bellows.
5. the wheel cylinder with fastening screw trip bolt according to claim 1, is characterized in that, on the outer wall of described piston (5), circumferentially direction part caves inward formation groove, and described groove is embedded with seal ring (4).
6. the wheel cylinder with fastening screw trip bolt according to claim 5, is characterized in that, described seal ring (4) is y-type seal ring.
7. the wheel cylinder with fastening screw trip bolt 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).
8. the wheel cylinder with fastening screw trip bolt according to claim 1, is characterized in that, on described oil-feed interface, blocking is provided with dust plug (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510975956.8A CN105422695A (en) | 2015-12-22 | 2015-12-22 | Brake wheel cylinder with fastening screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510975956.8A CN105422695A (en) | 2015-12-22 | 2015-12-22 | Brake wheel cylinder with fastening screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105422695A true CN105422695A (en) | 2016-03-23 |
Family
ID=55501147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510975956.8A Pending CN105422695A (en) | 2015-12-22 | 2015-12-22 | Brake wheel cylinder with fastening screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105422695A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4817944B1 (en) * | 1970-01-05 | 1973-06-01 | ||
| CN201568497U (en) * | 2009-11-13 | 2010-09-01 | 芜湖恒坤汽车部件有限公司 | Double-acting brake wheel cylinder assembly |
| CN201566605U (en) * | 2009-11-13 | 2010-09-01 | 芜湖恒坤汽车部件有限公司 | Brake wheel cylinder assembly |
| CN102364146A (en) * | 2011-09-22 | 2012-02-29 | 芜湖恒坤汽车部件有限公司 | Brake wheel cylinder assembly for preventing collision between pistons |
| CN203098686U (en) * | 2012-12-18 | 2013-07-31 | 芜湖恒坤汽车部件有限公司 | Double-cylinder piston type brake wheel cylinder |
-
2015
- 2015-12-22 CN CN201510975956.8A patent/CN105422695A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4817944B1 (en) * | 1970-01-05 | 1973-06-01 | ||
| CN201568497U (en) * | 2009-11-13 | 2010-09-01 | 芜湖恒坤汽车部件有限公司 | Double-acting brake wheel cylinder assembly |
| CN201566605U (en) * | 2009-11-13 | 2010-09-01 | 芜湖恒坤汽车部件有限公司 | Brake wheel cylinder assembly |
| CN102364146A (en) * | 2011-09-22 | 2012-02-29 | 芜湖恒坤汽车部件有限公司 | Brake wheel cylinder assembly for preventing collision between pistons |
| CN203098686U (en) * | 2012-12-18 | 2013-07-31 | 芜湖恒坤汽车部件有限公司 | Double-cylinder piston type brake wheel cylinder |
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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: 20160323 |
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| RJ01 | Rejection of invention patent application after publication |