CN105351406A - Single-piston brake cylinder - Google Patents
Single-piston brake cylinder Download PDFInfo
- Publication number
- CN105351406A CN105351406A CN201510879889.XA CN201510879889A CN105351406A CN 105351406 A CN105351406 A CN 105351406A CN 201510879889 A CN201510879889 A CN 201510879889A CN 105351406 A CN105351406 A CN 105351406A
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder body
- groove
- brake
- hydraulic pressure
- 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
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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
- 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
- F16D2125/04—Cylinders
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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
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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
- F16D2125/08—Seals, e.g. piston seals
Abstract
The invention discloses a single-piston brake cylinder. The single-piston brake cylinder comprises a cylinder body. One side of the cylinder body is connected with an external brake base plate. A working cavity is formed in the other side of the cylinder body. A piston is arranged in the working cavity. A hydraulic cavity is formed by the piston and the bottom of the working cavity. A first groove is formed in the position where the piston is matched with the cylinder body. A sealing ring is arranged in the first groove. A threaded hole is further formed in the other side, facing the hydraulic cavity, of the piston. An ejecting block is connected to the threaded hole through threads. An oil inlet is further formed in the cylinder body. The oil inlet is communicated with the hydraulic cavity. According to the single-piston brake cylinder, the piston does not make direct contact with a brake shoe, and the ejecting block connected to the piston through the threads makes contact with the brake shoe, so that when the ejecting block is abraded after the brake cylinder works for a period of time, a user just needs to dismount the abraded ejecting block and replaces the ejecting block with a new ejecting block, and thus the use cost of the brake cylinder can be greatly reduced.
Description
Technical field
The present invention relates to wheel cylinder, be specially a kind of single piston deceleration wheel cylinder.
Background technique
Drum brake is the braking executive device in braking system, and be the critical component in brake system of car, the element of drum brake is fewer than disk type braker, and structure is simple, and manufacture cost is lower.
Use the vehicle of drum brake when normally travelling, brake shoe is at the self-adjustment structure of drum brake inside, under resetting-mechanism comprehensive function, brake shoe rubbing surface keeps certain gap with brake drum all the time, during braking, the outwards movement of piston in hydraulic drive wheel cylinder, wheelcylinder piston promotes brake shoe parts again near brake drum, brake shoe parts and brake drum produce the rotation that surface friction drag stops wheel, after completing once braking, brake shoe parts depart from brake drum return under resetting-mechanism effect in break, wheel cylinder piston moves under the effect of brake shoe in wheel cylinder, until brake shoe is fixed on initial position under the support of self-adjustment structure.Wheel cylinder, by changing the hydraulic energy of brake master cylinder into mechanical energy, makes break enter working state, and then realizes the braking of wheel, and the wheel cylinder used at present mainly contains single piston type and double piston type two kinds.
Single piston type braking actuating mechanism is mainly used in double-collar and shoe type and two trailing shoe brake, but traditional single piston type braking actuating mechanism adopts wheelcylinder piston directly to promote the structural type of brake shoe near brake drum, because piston directly contacts with brake shoe in this kind of structural type, therefore piston can produce certain wearing and tearing in use for some time, now in order to ensure the normal work of whole break, to change piston, therefore this structural type will cause the rising of user cost.
Summary of the invention
The invention is intended to provide a kind of piston long service life, single piston deceleration wheel cylinder that wheel cylinder user cost is low.
Single piston deceleration wheel cylinder in this programme, comprise cylinder body, cylinder body side is connected with outer brake base plate, and cylinder body opposite side is provided with active chamber, piston is provided with in active chamber, hydraulic pressure cavity is formed on the bottom of piston and described active chamber, and piston and cylinder body cooperation place offer the first groove, are provided with seal ring in the first groove, piston area also offers tapped hole to the opposite side of hydraulic pressure cavity, tapped hole place has been threaded connection jacking block, and cylinder body also offers oil inlet hole, and oil inlet hole communicates with hydraulic pressure cavity.
The principle of this programme is and effect is: when needs are braked, high-pressure brake liquid enters hydraulic pressure cavity by the oil inlet hole on cylinder body, piston will move outward under the effect of high-pressure brake liquid, move with piston is outer with the jacking block that piston connects, move until offset with outer brake hoof and then realize braking action outside jacking block, the seal ring be arranged between piston and cylinder body can prevent the leakage of high-pressure brake liquid, piston in this programme does not directly contact with brake shoe, but the jacking block be threaded connection on piston contacts with brake shoe, therefore when wearing and tearing appear in wheel cylinder work a period of time jacking block, be threaded because jacking block adopts with piston, now only need the jacking block that the jacking block of the lower wearing and tearing of dismounting more renews, therefore the piston life in this programme will increase greatly, the user cost of wheel cylinder will reduce greatly.
Further, in order to make to keep between piston and hydraulic pressure cavity suitable oil-feed gap, piston area is provided with the projection keeping oil-feed gap to hydraulic pressure cavity side.
Further, in order to discharge the air in high-pressure brake liquid, cylinder body also offers vent hole, vent hole communicates with described hydraulic pressure cavity, and vent hole place is also provided with bleed valve and bleed valve protection screw.
Further, in order to prevent outside moisture and dust from entering, the normal work of wheel cylinder is had influence on, piston is also provided with the second groove, and the second groove is provided with protective housing, and cylinder body offers draw-in groove, the side of protective housing is positioned in the second groove, and protective housing opposite side is positioned in draw-in groove.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1 embodiment.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference character in Figure of description comprises: cylinder body 1, hydraulic pressure cavity 2, piston 3, seal ring 4, jacking block 5, protective housing 6, oil inlet hole 7, vent hole 8, bleed valve 9, bleed valve protection screw 10.
Embodiment is substantially as shown in Figure 2: single piston deceleration wheel cylinder, comprise cylinder body 1, the left side of cylinder body 1 offers screw, cylinder body 1 is connected with outer brake base plate by the screw in left side, active chamber is provided with at the right side opening of cylinder body 1, active chamber is made up of two-part that radial dimension is different, and wherein the radial dimension of active chamber left part is greater than the radial dimension of active chamber right part.
Piston 3 is placed with in active chamber, hydraulic pressure cavity 2 is formed on the left of piston 3 and between active chamber, the left side of piston 3 is provided with projection, this projection is the structural type of the wide band tapering in the left narrow right side, when this protruding left side and cylinder body 1 offset, piston 3 end face and cylinder body 1 end face still can keep certain oil-feed gap, the first groove is offered at piston 3 and the cooperation place of cylinder body 1, seal ring 4 is provided with in first groove, seal ring 4 is for preventing the leakage of internal high pressure brake fluid, tapped hole is offered in the right side central position of piston 3, this tapped hole place has been threaded connection jacking block 5, jacking block 5 is divided into cylindrical section and conical section, the cylindrical section of jacking block 5 and piston 3 end face coordinate, the conical section of jacking block 5 when braking and outer brake hoof offset, position on piston 3 between tapped hole and the first groove is also provided with the second groove, the side of protective housing 6 is placed in the second groove, cylinder body 1 is provided with draw-in groove, the opposite side of protective housing 6 is placed in draw-in groove.
As shown in Figure 1, oil inlet hole 7 is also offered in the left side of cylinder body 1, oil inlet hole 7 communicates with hydraulic pressure cavity 2, during braking, high-pressure brake liquid will enter hydraulic pressure cavity 2 from oil inlet hole 7, above oil inlet hole 7, be also provided with vent hole 8, and vent hole 8 communicates with hydraulic pressure cavity 2, also be provided with bleed valve 9 and bleed valve protection screw 10 at vent hole 8 place, bleed valve 9 makes air discharge in hydraulic pressure cavity 2 and can not enter into from hydraulic pressure cavity 2.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.
Claims (4)
1. a single piston deceleration wheel cylinder, it is characterized in that, comprise cylinder body, described cylinder body side is connected with outer brake base plate, described cylinder body opposite side is provided with active chamber, piston is provided with in described active chamber, hydraulic pressure cavity is formed on the bottom of described piston and described active chamber, described piston and described cylinder body cooperation place offer the first groove, seal ring is provided with in described first groove, described piston area also offers tapped hole to the opposite side of described hydraulic pressure cavity, described tapped hole place has been threaded connection jacking block, described cylinder body also offers oil inlet hole, described oil inlet hole communicates with described hydraulic pressure cavity.
2. single piston deceleration wheel cylinder according to claim 1, is characterized in that: described piston area is provided with the projection keeping oil-feed gap to described hydraulic pressure cavity side.
3. single piston deceleration wheel cylinder according to claim 2, it is characterized in that: described cylinder body also offers vent hole, described vent hole communicates with described hydraulic pressure cavity, and described vent hole place is also provided with bleed valve and bleed valve protection screw.
4. single piston deceleration wheel cylinder according to claim 3, it is characterized in that: described piston is also provided with the second groove, described second groove is provided with protective housing, described cylinder body offers draw-in groove, the side of described protective housing is positioned in described second groove, and described protective housing opposite side is positioned in described draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510879889.XA CN105351406A (en) | 2015-12-05 | 2015-12-05 | Single-piston brake cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510879889.XA CN105351406A (en) | 2015-12-05 | 2015-12-05 | Single-piston brake cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105351406A true CN105351406A (en) | 2016-02-24 |
Family
ID=55327445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510879889.XA Pending CN105351406A (en) | 2015-12-05 | 2015-12-05 | Single-piston brake cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105351406A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2236572Y (en) * | 1995-12-01 | 1996-10-02 | 蔡理 | Automatic gap regulator of hydraulic brake |
| JP2000120737A (en) * | 1998-10-13 | 2000-04-25 | Ntn Corp | Brake wheel cylinder with self-adjusting function |
| CN201318407Y (en) * | 2008-11-25 | 2009-09-30 | 南京跃进汽车制动系统有限公司 | Brake wheel cylinder assembly with automatic clearance adjustment mechanism |
| CN102425631A (en) * | 2011-12-09 | 2012-04-25 | 芜湖博格汽车零部件有限公司 | Single-action brake wheel cylinder |
| CN102425632A (en) * | 2011-12-09 | 2012-04-25 | 芜湖博格汽车零部件有限公司 | Wheel cylinder assembly with adjusting bolt |
| CN205315562U (en) * | 2015-12-05 | 2016-06-15 | 重庆元创汽车整线集成有限公司 | Single -piston wheel -brake cylinder |
-
2015
- 2015-12-05 CN CN201510879889.XA patent/CN105351406A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2236572Y (en) * | 1995-12-01 | 1996-10-02 | 蔡理 | Automatic gap regulator of hydraulic brake |
| JP2000120737A (en) * | 1998-10-13 | 2000-04-25 | Ntn Corp | Brake wheel cylinder with self-adjusting function |
| CN201318407Y (en) * | 2008-11-25 | 2009-09-30 | 南京跃进汽车制动系统有限公司 | Brake wheel cylinder assembly with automatic clearance adjustment mechanism |
| CN102425631A (en) * | 2011-12-09 | 2012-04-25 | 芜湖博格汽车零部件有限公司 | Single-action brake wheel cylinder |
| CN102425632A (en) * | 2011-12-09 | 2012-04-25 | 芜湖博格汽车零部件有限公司 | Wheel cylinder assembly with adjusting bolt |
| CN205315562U (en) * | 2015-12-05 | 2016-06-15 | 重庆元创汽车整线集成有限公司 | Single -piston wheel -brake cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160224 |
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| RJ01 | Rejection of invention patent application after publication |