CN103963764A - ADAM2 machinery auxiliary braking mechanism of vacuum booster - Google Patents
ADAM2 machinery auxiliary braking mechanism of vacuum booster Download PDFInfo
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- CN103963764A CN103963764A CN201310041832.3A CN201310041832A CN103963764A CN 103963764 A CN103963764 A CN 103963764A CN 201310041832 A CN201310041832 A CN 201310041832A CN 103963764 A CN103963764 A CN 103963764A
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- lining
- vacuum booster
- valve body
- switching
- air
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Abstract
The invention relates to an ADAM2 machinery auxiliary braking mechanism of a vacuum booster. The ADAM2 machinery auxiliary braking mechanism of the vacuum booster comprises a switching lining, a blocking platform, a touching part and a spring. The switching lining is arranged on an inner ring of a control valve body of the vacuum booster in a sleeving manner and is normally located at a first position which keeps an axial clearance from a control air valve assembly of the vacuum booster. An elastic arm is arranged on the other side opposite to the switching lining, and a reverse hook is arranged at the end part of the elastic arm. The reverse hook hooks the blocking platform to limit the switching lining to the first position. The touching part is connected with an air valve body of the vacuum booster and is axially opposite to the elastic arm. When the air valve body moves towards a direction far away from the control air valve assembly to reach a triggering condition, the triggering part ejects the elastic arm outwards in the radial direction, and the reverse hook is disengaged from the blocking platform. The spring is propped against the switching lining to exert axial force facing the control air valve assembly on the switching lining. When the reverse hook is disengaged from the blocking platform, the spring pushes the switching lining to a second position matched with the control air valve assembly.
Description
Technical field
The present invention relates in automobile, for braking auxiliary vacuum booster, especially to relate to the mechanical assistance stop mechanism in vacuum booster.
Background technology
The snap catch of automobile has vital effect for the safety of automobile.Braking energy brings shorter stopping distance faster, thereby reduces the probability of auto against, driver and the pedestrian of protection automobile.On automobile, be extensively equipped with BAS (Brake Assist System) at present, it can provide power-assisted in the time that driver brakes, and makes driver only need apply less treadle effort to brake pedal in the time of brake, just can obtain larger braking force.A kind of example of BAS (Brake Assist System) is vacuum booster, is installed on automobile dash board, and input bar is connected with brake pedal, and the treadle effort that the pressure reduction that utilizes vacuum to produce applies chaufeur amplifies, and obtains larger braking force.The problem of traditional vacuum servo-unit is the larger power-assisted that cannot provide required in the time of emergency braking.Like this, if chaufeur need to be exported larger braking force under emergency, still must provide larger treadle effort.But under emergency, chaufeur, due to panic or power deficiency own, probably cannot provide larger treadle effort, causes automobile to be braked in time.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of mechanical assistance stop mechanism, to provide emergency braking required braking force.
The present invention is that to solve the problems of the technologies described above the technical scheme adopting be a kind of mechanical assistance stop mechanism, is applicable to a vacuum booster, and this mechanical assistance stop mechanism comprises and switches lining, gear platform, touch part and spring.Switching lining is located at the control valve body inner ring of this vacuum booster and normally in primary importance, in this primary importance, between a side of this switching lining and the control air-valve assembly of this vacuum booster, has an endplay; The contrary opposite side of this switching lining there is an elastic arm, the end of this elastic arm has an overhead kick.This overhead kick hooks and is located at this gear platform, so that this switching lining is limited in to this primary importance.Touch part is connected with the air valve body of this vacuum booster, and axially relative with this elastic arm, in the time that this air valve body reaches a trigger condition to the movement of the direction away from this control air-valve assembly, radially outside this elastic arm of jack-up in this touch part, and make this overhead kick depart from this gear platform.Spring, supports and is located at this switching lining to apply an axial force to this control air-valve assembly to this switching lining, and in the time that this overhead kick departs from this gear platform, this spring promotes this switching lining to the second place coordinating with this control air-valve assembly.
In one embodiment of this invention, mechanical assistance stop mechanism also comprises a seal ring, is located between this switching lining and this control valve body.
In one embodiment of this invention, mechanical assistance stop mechanism also comprises a backing pin, in order to stop this switching lining to continue to move to this control air-valve assembly direction, and by spacing this switching lining in this second place.
In one embodiment of this invention, this touch part is to be integrally formed on this air valve body.
In one embodiment of this invention, this gear platform is to be integrally formed on this control valve body.
In one embodiment of this invention, the root of this elastic arm has a radially inner projection, and this touch part has a dip plane towards a side of this projection.
The present invention, owing to adopting above technical scheme, makes it compared with prior art, for vacuum booster provides mechanical assistance braking function, thereby can after triggering, can make vacuum booster output reach rapidly Max point of booster force, for vehicle provides emergency braking.
Brief description of the drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 illustrates a kind of existing vacuum booster sectional structure.
Fig. 2 illustrates the semi-sictional view structure of vacuum booster according to an embodiment of the invention.
Fig. 3 illustrates the mode of operation of vacuum booster shown in Fig. 2.
Detailed description of the invention
In order to contrast, Fig. 1 illustrates a kind of existing vacuum booster sectional structure.With reference to shown in Fig. 1, vacuum booster can comprise cavity 10 simultaneously, and it is further divided into vacuum chamber 12 and air chamber 13 by epithelium supporting plate and epithelium 11.The by-pass valve control on vacuum servo gas right side comprises vacuum valve and air door.Vacuum valve is used for controlling vacuum chamber 12 and whether air chamber 13 is communicated with.Air door is used for controlling air and whether is allowed to enter air chamber 13.Under normal condition, vacuum valve is opened, and air door is closed, and therefore vacuum chamber 12 and air chamber 13 communicate and be evacuated, and air cannot enter vacuum chamber 12 and air chamber 13.In the time that brake pedal is operated, vacuum valve is closed, and air door is checked card, and vacuum chamber 12 and air chamber 13 are isolated, and air can enter air chamber 13.Like this, between vacuum chamber 12 and air chamber 13, will have pressure reduction, epithelium supporting plate and epithelium 11 will be promoted to vacuum chamber 12, thereby produce power-assisted.
The feature of the embodiment of the present invention is that vacuum valve and air door are improved, and a kind of ADAM2 type mechanical assistance stop mechanism is provided, and makes vacuum booster can provide larger power-assisted under the emergency state.Fig. 2 illustrates the semi-sictional view structure of vacuum booster according to an embodiment of the invention.This sectional structure illustrates the valve part of vacuum servo gas.Shown in Fig. 2, vacuum valve comprises control valve body 21 and controls air-valve assembly 22.Air door comprises air valve body 23, controls air-valve assembly 22 and valve rod 24.That is to say, the two shares controls air-valve assembly 22.
In the present embodiment, control valve body 21 can form on the housing of whole valve.Controlling air-valve assembly 22 is cyclic structure, and itself and control valve body 21 coordinate, to close the valve port of vacuum valve.In one embodiment, controlling air-valve assembly 22 can be made up of rubber.
For air door, air valve body 23 is arranged on valve rod 24, and with control air-valve assembly 22 and coordinate to close the valve port of air door.Valve rod 24 can be pushed with treadle effort (in figure for left), and air valve body 23 is promoted left thereupon, controls air-valve assembly 22 thereby leave, and opens shown in valve port 25(Fig. 3 of air door).Like this, air can pour in from right side the air chamber of vacuum booster, forms power-assisted.But, the pouring in of air forms can drive control valve body 21 after pressure reduction and control air-valve assembly 22 and is moved to the left, and moves to air valve body 26, thereby has the trend of the valve port opening that reduces air door.This voluntary straining maneuver causes the valve port of air door to be difficult for being opened at short notice required aperture, thereby causes required brake boost deficiency.
The mechanical assistance stop mechanism of the present embodiment comprises switching lining 31, spring 32, gear platform 33 and touch part 34.Switch lining 31 be located at vacuum booster control valve body 21 inner ring and normally in primary importance as shown in Figure 2.In this primary importance, switch between a side (being right side in figure) of lining 31 and the control air-valve assembly 22 of vacuum booster and have an endplay G.Now aspect vacuum valve, rely on control air-valve assembly 22 and control valve body 21 coordinate realize.Air door aspect, rely on control air-valve assembly 22 and air valve body 23 coordinate realize.
Switch lining 31 contrary opposite side there is an elastic arm 31a, the end of this elastic arm 31a has an overhead kick 31b.Overhead kick 31b hooks normally and is located at gear platform 33, to be limited in above-mentioned primary importance by switching lining 31.In the present embodiment, gear platform 33 is to be integrally formed at control valve body 21.
Touch part 34 is connected with the air valve body 23 of vacuum booster, and axially relative with this elastic arm 31a.More particularly, the root of elastic arm 31a has a radially inner protruding 31c, and touch part 34 has a dip plane towards a side of this projection 31c.In the present embodiment, coordinating between touch part 34 and protruding 31c determined the trigger condition of mechanical assistance stop mechanism.This trigger condition mainly depends on treadle effort and speed.More particularly, be treadle effort and speed product.This trigger condition can be adjusted according to the actual requirements.
In the time that air valve body 23 reaches a trigger condition to the movement of the direction away from control air-valve assembly 22 (being to the right in figure), radially outside this elastic arm of the jack-up 31a in touch part 34, makes it bending, keeps off platform 33 thereby overhead kick 31b is departed from.
Spring 32 supports to be located at and switches lining 31 to apply one to the axial force of controlling air-valve assembly 22 to switching lining 31.Like this, in the time occurring that overhead kick 31b as the aforementioned departs from the situation of gear platform 33, spring 32 is pushed to and the second place of controlling air-valve assembly 22 and coordinating switching lining 31.In this second place, switching lining 31 will replace control valve body 21 and coordinate with control air-valve assembly 22, thereby still close vacuum valve.In addition, control air-valve assembly 22 and will be limited to the position coordinating with switching lining 31.Like this, air valve body 26 will have the larger freedom that moves axially, and when its result, the valve port 25 of air door is easier to open, and large quantity of air pours in servo-unit air chamber, reaches in a short time larger braking auxiliaring effect.
In a preferred embodiment, mechanical assistance stop mechanism also can comprise a seal ring 34, is located at and switches between lining 31 and this control valve body 21, plays sealing function.
In a preferred embodiment, mechanical assistance stop mechanism also can comprise a backing pin 36, in order to move 22 when the second place switching the leaving gear platform 33 of lining 31 to controlling air-valve assembly, stop switch lining 31 continue to move to these control air-valve assembly 22 directions, and by spacing this switching lining 31 in this second place.
In a preferred embodiment, this touch part is to be integrally formed on this air valve body.
In a preferred embodiment, the major part of mechanical assistance stop mechanism, switches lining 31 and can use plastic material to make.
In sum, the mechanical assistance stop mechanism that the embodiment of the present invention proposes can make vacuum booster output reach rapidly Max point of booster force after triggering, for vehicle provides emergency braking.In addition, the trigger condition of mechanical assistance stop mechanism can regulate according to customer demand.And this mechanical assistance stop mechanism uses modularization standardized designs, can install this function additional based on existing traditional product.Further, the vital parts of mechanical assistance stop mechanism is plastic material, reduces cost of product and weight.
Although the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, in the situation that not departing from spirit of the present invention, also can make variation or the replacement of various equivalences, therefore, as long as the variation to above-described embodiment, modification all will drop in the application's the scope of claims within the scope of connotation of the present invention.
Claims (6)
1. a mechanical assistance stop mechanism, is applicable to a vacuum booster, and this mechanical assistance stop mechanism comprises:
Switch lining, be located at the control valve body inner ring of this vacuum booster and normally in primary importance, in this primary importance, between a side of this switching lining and the control air-valve assembly of this vacuum booster, have an endplay; The contrary opposite side of this switching lining there is an elastic arm, the end of this elastic arm has an overhead kick;
Gear platform, this overhead kick hooks and is located at this gear platform, so that this switching lining is limited in to this primary importance;
Touch part, be connected with the air valve body of this vacuum booster, and axially relative with this elastic arm, in the time that this air valve body reaches a trigger condition to the movement of the direction away from this control air-valve assembly, radially outside this elastic arm of jack-up in this touch part, and make this overhead kick depart from this gear platform; And
Spring, supports and is located at this switching lining to apply an axial force to this control air-valve assembly to this switching lining, and in the time that this overhead kick departs from this gear platform, this spring promotes this switching lining to the second place coordinating with this control air-valve assembly.
2. mechanical assistance stop mechanism as claimed in claim 1, is characterized in that, also comprises a seal ring, is located between this switching lining and this control valve body.
3. mechanical assistance stop mechanism as claimed in claim 1, is characterized in that, also comprises a backing pin, in order to stop this switching lining to continue to move to this control air-valve assembly direction, and by spacing this switching lining in this second place.
4. mechanical assistance stop mechanism as claimed in claim 1, is characterized in that, this touch part is to be integrally formed on this air valve body.
5. mechanical assistance stop mechanism as claimed in claim 1, is characterized in that, this gear platform is to be integrally formed on this control valve body.
6. mechanical assistance stop mechanism as claimed in claim 1, is characterized in that, the root of this elastic arm has a radially inner projection, and this touch part has a dip plane towards a side of this projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310041832.3A CN103963764A (en) | 2013-02-01 | 2013-02-01 | ADAM2 machinery auxiliary braking mechanism of vacuum booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310041832.3A CN103963764A (en) | 2013-02-01 | 2013-02-01 | ADAM2 machinery auxiliary braking mechanism of vacuum booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103963764A true CN103963764A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310041832.3A Pending CN103963764A (en) | 2013-02-01 | 2013-02-01 | ADAM2 machinery auxiliary braking mechanism of vacuum booster |
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| CN (1) | CN103963764A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679117A (en) * | 2018-06-26 | 2018-10-19 | 北京光宇之勋科技有限公司 | A kind of braking force control mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990319A (en) * | 2005-12-26 | 2007-07-04 | 株式会社爱德克斯 | Vacuum type booster device |
| CN101612933A (en) * | 2009-07-17 | 2009-12-30 | 芜湖伯特利汽车安全系统有限公司 | A kind of mechanical vacuum booster with emergency braking function |
| US20120111184A1 (en) * | 2010-11-08 | 2012-05-10 | Robert Bosch Gmbh | Valve Return Spring With Filter Support For A Pneumatic Brake Booster Assembly |
| CN202294766U (en) * | 2011-09-22 | 2012-07-04 | 余姚市安统五金有限公司 | Automobile vacuum booster |
| CN203094043U (en) * | 2013-02-01 | 2013-07-31 | 上海大陆汽车制动系统销售有限公司 | ADAM2 machinery auxiliary braking mechanism of vacuum booster |
-
2013
- 2013-02-01 CN CN201310041832.3A patent/CN103963764A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990319A (en) * | 2005-12-26 | 2007-07-04 | 株式会社爱德克斯 | Vacuum type booster device |
| CN101612933A (en) * | 2009-07-17 | 2009-12-30 | 芜湖伯特利汽车安全系统有限公司 | A kind of mechanical vacuum booster with emergency braking function |
| US20120111184A1 (en) * | 2010-11-08 | 2012-05-10 | Robert Bosch Gmbh | Valve Return Spring With Filter Support For A Pneumatic Brake Booster Assembly |
| CN202294766U (en) * | 2011-09-22 | 2012-07-04 | 余姚市安统五金有限公司 | Automobile vacuum booster |
| CN203094043U (en) * | 2013-02-01 | 2013-07-31 | 上海大陆汽车制动系统销售有限公司 | ADAM2 machinery auxiliary braking mechanism of vacuum booster |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679117A (en) * | 2018-06-26 | 2018-10-19 | 北京光宇之勋科技有限公司 | A kind of braking force control mechanism |
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Application publication date: 20140806 |