CN203601255U - Automobile vacuum booster - Google Patents
Automobile vacuum booster Download PDFInfo
- Publication number
- CN203601255U CN203601255U CN201320826800.XU CN201320826800U CN203601255U CN 203601255 U CN203601255 U CN 203601255U CN 201320826800 U CN201320826800 U CN 201320826800U CN 203601255 U CN203601255 U CN 203601255U
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- CN
- China
- Prior art keywords
- hole
- vacuum booster
- push rod
- jacking block
- master cylinder
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- Expired - Fee Related
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Abstract
The utility model provides an automobile vacuum booster, and belongs to the technical field of automobiles. The automobile vacuum booster solves the technical problem that a rubber ejection block of an existing automobile vacuum booster cannot be conveniently or rapidly replaced. The automobile vacuum booster comprises a front shell and a rear shell, wherein a master cylinder push rod is arranged in the front shell. The automobile vacuum booster further comprises a fixed disk, wherein a plurality of first through holes are formed in the fixed disk, a plurality of second through holes are formed in a rubber ejection block and correspond to the first through holes, threaded holes are formed in the outer end of the front shell and correspond to the second through holes, a bolt is inserted into each threaded hole, the second through hole corresponding to the threaded hole and the first through hole corresponding to the second through hole, a center through hole is further formed in the fixed disk, the outer end of a piston of an automobile master cylinder is inserted into the center through hole, and the middle of the rubber ejection block can extend into the center through hole through elastic deformation and push the piston of the automobile master cylinder. According to the automobile vacuum booster, the rubber ejection block is convenient to replace.
Description
Technical field
The utility model belongs to automobile technical field, relates to a kind of automobile vacuum booster.
Background technology
Automobile vacuum booster has been widely used on all kinds of cars and lorry, and the mouth of vacuum booster for vehicle brake is connected with hydraulic brake master, and control end is connected with brake pedal by leverage, and low pressure chamber is connected with driving engine by flexible pipe.The negative pressure producing when vacuum booster utilizes engine cylinder air-breathing as propulsion source and work done, can make chaufeur obtain higher braking oil pressure with less treadle effort, thereby make brake operation lighter, brakes more reliable.
China patent CN 202728211U discloses a kind of vacuum booster, the rear housing that this vacuum booster comprises front case and is connected with front case, front case is fixed with the vacuum elbow for being connected with air inlet pipe, rear housing center is equipped with Input Forces push rod, Input Forces push rod is provided with control cock assembly between Input Forces push rod and rear housing and the inner of Input Forces push rod is fixed with air valve base, control cock assembly comprises control cock, input car push rod is connected with the piston body that penetrates rear housing, the inner center of piston body is fixed with the output force pushing bar with the coaxial setting of Input Forces push rod, output force pushing bar is positioned at front case, front case center is fixed with the rubber jacking block that extends axially direction in output force pushing bar, between rubber jacking block and output force pushing bar, there is brake cabin distance.
Above-mentioned vacuum booster has guaranteed the leak tightness of ante-chamber by arranging of rubber jacking block, while guaranteeing to brake, the degree of vacuum of ante-chamber, makes good braking effect.But, during due to braking, need to promote to drive the distortion of rubber jacking block by output force pushing bar, and then drive master cylinder piston to move by the deformation of rubber jacking block, thereby realize braking, therefore, can frequent there is larger deformation in rubber jacking block, and in the more environment of this dust of automobile, oil stain, rubber jacking block is easy to lose efficacy, between rubber jacking block in documents and front case, be mutually bonding, therefore, in the time that rubber jacking block lost efficacy, its replacing is very inconvenient.
Summary of the invention
The utility model is the problems referred to above that exist for existing technology, and a kind of automobile vacuum booster is provided, and technical problem to be solved in the utility model is: the replacing convenience that how to improve the rubber jacking block in automobile vacuum booster.
The purpose of this utility model can realize by following technical proposal: a kind of automobile vacuum booster, described vacuum booster comprises front case and rear housing, the inner of described front case and the inner of rear housing connect, on described front case, be provided with vacuum check valve, in described rear housing, control cock is installed, in described control cock, be plugged with servo-unit push rod, the inner of described servo-unit push rod is installed with choker relief valve; Described vacuum booster also comprises epithelium, described epithelium and described rear housing form a vacuum chamber, described epithelium and front case composition power-assisted chamber, described epithelium is installed on diaphragm seat, on described diaphragm seat, master cylinder push rod is installed, described master cylinder push rod is positioned at described front case, between described master cylinder push rod and described choker relief valve, counter-force dish is installed, the center of described front case outer end is fixed with the rubber jacking block coaxial with described master cylinder push rod, described rubber jacking block is in the form of annular discs, between described rubber jacking block and described master cylinder push rod, has brake cabin distance; It is characterized in that, described vacuum booster also comprises a reaction plate, on described reaction plate, offer several the first through holes, on described rubber jacking block, offer several second through holes corresponding with described the first through hole, the outer end place of described front case also offers the tapped bore corresponding with described the second through hole, described tapped bore, second through hole corresponding with this tapped bore and with the first corresponding through hole of this second through hole in be plugged with a bolt simultaneously; On described reaction plate, also offer a central through hole, described central through hole and described master cylinder push rod coaxially arrange, the piston outer end of automobile main cylinder is plugged in described central through hole, and the middle part of described rubber jacking block can extend in described central through hole and the piston of propelling vehicle master cylinder by elastic deformation.
Its principle of work is as follows: braking principle and the documents of this vacuum booster are similar, drives master cylinder push rod to move by servo-unit push rod, and rubber jacking block is deformed, thus the piston of propelling vehicle master cylinder; And innovative point of the present utility model is, rubber jacking block in the utility model is removably fixed on front case by reaction plate and bolt, in the time that the inefficacy of rubber jacking block need to be changed, only need back out bolt, reaction plate and rubber jacking block are taken off, the rubber jacking block more renewing, convenient to operation; Be designed with the reason of reaction plate, the first is for fixing rubber jacking block use, and it two is, by central through hole, master cylinder push rod is played to a directional tagging, improves the precision of its running orbit.
In above-mentioned a kind of automobile vacuum booster, described vacuum booster also comprises a guide cylinder, the inner of described guide cylinder is fixed in the outer card of described reaction plate, in described guide cylinder, offer the connecting bore being connected with described central through hole, the junction of described connecting bore and described central through hole is one to be the guide part of arcuation.Be designed with after guide cylinder, its object is to control the direction of rubber jacking block distortion, it is matched with master cylinder piston better, and the junction of connecting bore and central through hole is designed to the guide part of an arcuation, its object is the wearing and tearing that the hole wall of central through hole and connecting bore causes rubber jacking block when reducing rubber jacking block generation deformation, the service life of improving rubber jacking block.
In above-mentioned a kind of automobile vacuum booster, described guide cylinder and described reaction plate are the integral structure that adopts injection mo(u)lding.Guide cylinder and reaction plate are designed to integral structure, have both guaranteed Joint strenght between the two, improved again efficiency of assembling.
In above-mentioned a kind of automobile vacuum booster, described the first through hole, the second through hole and tapped bore are four, described four the first through holes are uniformly distributed on described reaction plate in the form of a ring, and described four the second through holes are uniformly distributed on described rubber jacking block in the form of a ring.
Compared with prior art, the utlity model has following advantage:
1, the braking principle of this vacuum booster and documents are similar, drive master cylinder push rod to move by servo-unit push rod, and rubber jacking block is deformed, thus the piston of propelling vehicle master cylinder; And innovative point of the present utility model is, rubber jacking block in the utility model is removably fixed on front case by reaction plate and bolt, in the time that the inefficacy of rubber jacking block need to be changed, only need back out bolt, reaction plate and rubber jacking block are taken off, the rubber jacking block more renewing, convenient to operation; Be designed with the reason of reaction plate, the first is for fixing rubber jacking block use, and it two is, by central through hole, master cylinder push rod is played to a directional tagging, improves the precision of its running orbit.
Accompanying drawing explanation
Fig. 1 is the structural representation of this vacuum booster in embodiment.
Fig. 2 is the assembly drowing of this reaction plate and rubber jacking block in embodiment.
In figure, 1, front case; 2, rear housing; 3, vacuum check valve; 4, servo-unit push rod; 5, choker relief valve; 6, epithelium; 7, diaphragm seat; 8, master cylinder push rod; 9, counter-force dish; 10, rubber jacking block; 11, reaction plate; 12, the first through hole; 13, the second through hole; 14, tapped bore; 15, bolt; 16, central through hole; 17, guide cylinder; 18, connecting bore; 19, guide part.
The specific embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1 and Figure 2, this vacuum booster comprises front case 1 and rear housing 2, the inner of the inner of front case 1 and rear housing 2 connects, on front case 1, be provided with vacuum check valve 3, in rear housing 2, control cock is installed, in control cock, be plugged with servo-unit push rod 4, the inner of servo-unit push rod 4 is installed with choker relief valve 5; Vacuum booster also comprises epithelium 6, epithelium 6 forms a vacuum chamber with rear housing 2, epithelium 6 forms power-assisted chamber with front case 1, epithelium 6 is installed on diaphragm seat 7, and master cylinder push rod 8 is installed on diaphragm seat 7, and master cylinder push rod 8 is positioned at front case 1, between master cylinder push rod 8 and choker relief valve 5, counter-force dish 9 is installed, the center of front case 1 outer end is fixed with the rubber jacking block 10 coaxial with master cylinder push rod 8, and rubber jacking block 10 is in the form of annular discs, between rubber jacking block 10 and master cylinder push rod 8, has brake cabin distance.
As Fig. 1, shown in Fig. 2, this vacuum booster also comprises a reaction plate 11, on reaction plate 11, offer several the first through holes 12, on rubber jacking block 10, offer several second through holes 13 corresponding with the first through hole 12, the outer end place of front case 1 also offers the tapped bore 14 corresponding with the second through hole 13, tapped bore 14, second through hole 13 corresponding with this tapped bore 14 and first through hole 12 interior be simultaneously a plugged with bolt 15 corresponding with this second through hole 13, in the present embodiment, the first through hole 12, the second through hole 13 and tapped bore 14 are four, four the first through holes 12 are uniformly distributed on reaction plate 11 in the form of a ring, four the second through holes 13 are uniformly distributed on rubber jacking block 10 in the form of a ring, on reaction plate 11, also offer a central through hole 16, central through hole 16 coaxially arranges with master cylinder push rod 8, the piston outer end of automobile main cylinder is plugged in central through hole 16, and the middle part of rubber jacking block 10 can extend in central through hole 16 and the piston of propelling vehicle master cylinder by elastic deformation.As preferably, this vacuum booster also comprises a guide cylinder 17, the inner of guide cylinder 17 is fixed in the outer card of reaction plate 11, offers the connecting bore 18 being connected with central through hole 16 in guide cylinder 17, and connecting bore 18 and the junction of central through hole 16 are one to be the guide part 19 of arcuation.Guide cylinder 17 and the integral structure of reaction plate 11 for employing injection mo(u)lding.
Principle of work of the present utility model is as follows: braking principle and the documents of this vacuum booster are similar, drives master cylinder push rod to move by servo-unit push rod, and rubber jacking block is deformed, thus the piston of propelling vehicle master cylinder; And innovative point of the present utility model is, rubber jacking block in the utility model is removably fixed on front case by reaction plate and bolt, in the time that the inefficacy of rubber jacking block need to be changed, only need back out bolt, reaction plate and rubber jacking block are taken off, the rubber jacking block more renewing, convenient to operation; Be designed with the reason of reaction plate, the first is for fixing rubber jacking block use, and it two is, by central through hole, master cylinder push rod is played to a directional tagging, improves the precision of its running orbit.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (4)
1. an automobile vacuum booster, described vacuum booster comprises front case (1) and rear housing (2), the inner of the inner of described front case (1) and rear housing (2) connects, on described front case (1), be provided with vacuum check valve (3), described rear housing is provided with control cock in (2), in described control cock, be plugged with servo-unit push rod (4), the inner of described servo-unit push rod (4) is installed with choker relief valve (5), described vacuum booster also comprises epithelium (6), described epithelium (6) and described rear housing (2) composition one vacuum chamber, described epithelium (6) and front case (1) composition power-assisted chamber, described epithelium (6) is installed on diaphragm seat (7), master cylinder push rod (8) is installed on described diaphragm seat (7), described master cylinder push rod (8) is positioned at described front case (1), between described master cylinder push rod (8) and described choker relief valve (5), counter-force dish (9) is installed, the center of described front case (1) outer end is fixed with the rubber jacking block (10) coaxial with described master cylinder push rod (8), described rubber jacking block (10) is in the form of annular discs, between described rubber jacking block (10) and described master cylinder push rod (8), there is brake cabin distance, it is characterized in that, described vacuum booster also comprises a reaction plate (11), on described reaction plate (11), offer several the first through holes (12), on described rubber jacking block (10), offer several second through holes (13) corresponding with described the first through hole (12), the outer end place of described front case (1) also offers the tapped bore (14) corresponding with described the second through hole (13), described tapped bore (14), second through hole (13) corresponding with this tapped bore (14) and with corresponding the first through hole (12) of this second through hole (13) in be plugged with a bolt (15) simultaneously, on described reaction plate (11), also offer a central through hole (16), described central through hole (16) coaxially arranges with described master cylinder push rod (8), the piston outer end of automobile main cylinder is plugged in described central through hole (16), and the middle part of described rubber jacking block (10) can extend in described central through hole (16) and the piston of propelling vehicle master cylinder by elastic deformation.
2. automobile vacuum booster according to claim 1, it is characterized in that, described vacuum booster also comprises a guide cylinder (17), the inner of described guide cylinder (17) is fixed in the outer card of described reaction plate (11), in described guide cylinder (17), offer the connecting bore (18) being connected with described central through hole (16), the junction of described connecting bore (18) and described central through hole (16) is one to be the guide part (19) of arcuation.
3. automobile vacuum booster according to claim 2, is characterized in that, described guide cylinder (17) and the integral structure of described reaction plate (11) for employing injection mo(u)lding.
4. automobile vacuum booster according to claim 3, it is characterized in that, described the first through hole (12), the second through hole (13) and tapped bore (14) are four, it is upper that described four the first through holes (12) are uniformly distributed in described reaction plate (11) in the form of a ring, and described four the second through holes (13) are uniformly distributed on described rubber jacking block (10) in the form of a ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320826800.XU CN203601255U (en) | 2013-12-16 | 2013-12-16 | Automobile vacuum booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320826800.XU CN203601255U (en) | 2013-12-16 | 2013-12-16 | Automobile vacuum booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203601255U true CN203601255U (en) | 2014-05-21 |
Family
ID=50713948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320826800.XU Expired - Fee Related CN203601255U (en) | 2013-12-16 | 2013-12-16 | Automobile vacuum booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203601255U (en) |
-
2013
- 2013-12-16 CN CN201320826800.XU patent/CN203601255U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20171216 |