CN109808662A - The negative pressure aggrandizement apparatus of braking system - Google Patents
The negative pressure aggrandizement apparatus of braking system Download PDFInfo
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- CN109808662A CN109808662A CN201711160559.0A CN201711160559A CN109808662A CN 109808662 A CN109808662 A CN 109808662A CN 201711160559 A CN201711160559 A CN 201711160559A CN 109808662 A CN109808662 A CN 109808662A
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Abstract
The present invention relates to the negative pressure aggrandizement apparatus of braking system, the present invention the hole being extended in a manner of vertical connection on the downside of neck and one end in the Venturi tube of valve chest be respectively set in a manner of it can be opened and closed opening and closing the first diaphragm and the second diaphragm come, further increase the braking negative pressure for the balanced reservoir for flowing into engine, and, by the spatial portion for the wide area that the step cutting pattern portion inner peripheral surface in each hole as above-mentioned air duct is formed with the radial multiple space maintenance protrusions being provided projectingly and in-between, flow into a large amount of brake booster air, braking negative pressure is set to further increase and increase, and the inside that the outer peripheral edge of above-mentioned first diaphragm and the second diaphragm is held to above-mentioned space dimension between the end with protrusion is separated with the state being almost close to, when the opening and closing of above-mentioned first diaphragm and the second diaphragm, it is logical Crossing prevents from flowing can simply and readily be opened and closed.
Description
Technical field
The present invention relates in the neck and one for being extended the Venturi tube in valve chest in a manner of vertical connection
The first diaphragm of opening and closing and the second diaphragm is respectively set in a manner of it can be opened and closed to make to flow into engine in hole on the downside of end
The negative pressure aggrandizement apparatus for the braking system that the braking negative pressure of balanced reservoir further increases is related to following braking in more detail
The negative pressure aggrandizement apparatus of system, that is, by the step cutting pattern in each hole as air duct in the lower part two sides of Venturi tube
Portion's inner peripheral surface with the spatial portion of the radial wide area for being provided projectingly multiple space maintenance protrusions and being formed in-between,
Flow into a large amount of brake booster air, make brake negative pressure further increase and increase, and above-mentioned first diaphragm and second every
The outer peripheral edge of film is held the inside between the end with protrusion to above-mentioned space dimension and is separated with the state being almost close to, thus when upper
When stating the opening and closing of the first diaphragm and the second diaphragm, can simply and readily it be opened and closed by preventing flowing, above-mentioned air inflow aperture
Multiple support chips stablize and support the first diaphragm and the second diaphragm for being opened and closed above-mentioned air inflow aperture, and air pass through it is upper
The air duct stated between support chip easily flows into.
Background technique
In general, enlargement and high speed with vehicle, it is known that can by trample the small pedal force of brake pedal come
The reliably brake booster of abrupt deceleration vehicle, the principle for increasing the brake force of vehicle using this brake booster are as follows, that is,
It is provided separately master cylinder and power piston, applies the pressure difference of the pressure difference based on vacuum and atmospheric pressure to above-mentioned power piston, from
And increases strength and generate big pressure.
Brake booster as described above including the use of the pressure difference between vacuum and atmospheric pressure vacuum type brake boost
Device and the compressed air type brake booster for utilizing compressed air pressure, above-mentioned vacuum type brake booster are following device,
That is, by the negative pressure of the inlet manifold of engine or vacuum pump generation and with the differential pressure action of atmospheric pressure in being set to booster
Internal power piston, to apply big strength to brake.
Also, using vacuum pump, due to the volume for needing above-mentioned vacuum pump and being connected with above-mentioned vacuum pump
Outer device, thus be difficult to be set in the indoor narrow space of engine, and make the cost increase of vehicle, therefore utilize
The negative pressure usually generated in the inlet manifold of engine.
But as described above, negative pressure is simultaneously not always permanent using in the case where the negative pressure that motor intake manifold generates
Fixed, when the atmospheric density on such as highland etc. is low, it can be changed according to surrounding enviroment, therefore exist and be difficult to ensure needed for booster
Negative pressure the problem of.
On the other hand, to solve the above-mentioned problems, it is arranged and using the negative of the vacuum for increasing brake booster side
Press enhancer (Intensifier), above-mentioned negative pressure enhancer works in such a way, that is, by balanced reservoir negative pressure from
Flow velocity accelerates the air that air purifier side enters due to the venturi portion by being set to negative pressure enhancer, and using simultaneously
The pressure facilitation phenomenon (Bernoulli's theorem) of generation works.
Like this, knowing from Korean Patent Publication No. No. 10-0767486 and No. 10-1037019 can be by text
Effect increases the vehicle braking negative pressure enhancer of negative pressure in mound.
Its technical pattern is as shown in Fig. 1 a and Fig. 1 b, in order to the balanced reservoir 2 for being set to brake booster 1 Yu engine
Between 3 neck 4 of Venturi tube be opened and closed, in the former case, check-valves 6 (Check Valve) is set to one end
It is connected in a manner of connection with above-mentioned Venturi tube 3, the negative pressure that the other end is connected with the vacuum ports of brake booster 1 increases
Big line 5 is respectively set perpendicular to the first check-valve 6a of the neck of above-mentioned Venturi tube 3 and for opening in the latter case
The second check-valve 6b stated between booster 1 and balanced reservoir 2 is closed, to realize that the negative pressure based on above-mentioned Venturi effect increases
Greatly.
That is, the check-valves 6 (Check Valve) as described above or first check-valve 6a and second check-valve 6b the case where
Under, it is flexibly set in the piston 8 of reset spring 7 and extends opening and closing extension 9 and the rubber for being set to the upside of above-mentioned piston 8
Component C is in contact, and when the negative pressure inside brake booster 1 is low, the pressure for being applied to above-mentioned piston 8 compresses reset spring 7
Deformation, to eliminate the state with rubber components C face contact, thus guide plate G guides the rear end of above-mentioned piston 8 and increases system
The negative pressure of dynamic booster.
But in the case where braking negative pressure enhancer as described above, the negative pressure inside brake booster 1 sets elasticity
Be placed in 7 compressive deformation of reset spring of piston 8 and the negative pressure that increases, thus increased by above-mentioned Venturi effect in order to make on
State piston 8 and be flexibly set in its 7 compressive deformation of reset spring and be depleted, thus cannot be expected more than negative pressure increase
Big effect, and there are Whole Responses to reduce, the problems that increase weight etc..
On the other hand, recently, know to set simple and appearance by interior from 2013/0213510 A1 of US publication US
Opening and closing of changing places be set to light weight between the neck of the Venturi tube between brake booster and the balanced reservoir of engine every
The check-valves of film (diaphragm) Lai Zeng great negative pressure.
For its technical pattern as shown in Fig. 2 a to Fig. 2 d, valve chest 10 is set to the balanced reservoir of brake booster and engine
Between, also, the hole 30 in the downside of neck 22 of above-mentioned Venturi tube 20 is being extended in a manner of vertical connection with can
The first circular diaphragm 40 of opening and closing is arranged in the mode of opening and closing, so as to the Venturi tube 20 being formed in inside above-mentioned valve chest 10
It is opened and closed between the neck 22 that width as 21 center portion of air duct narrows, also, from above-mentioned brake booster
To the inflow entrance of balanced reservoir penetrate through above-mentioned Venturi tube 20 one end on the downside of hole 30 in a manner of it can be opened and closed in set
Second circular diaphragm 50.
At this point, as shown in Figure 2 b, in the outer peripheral edge of above-mentioned first circular diaphragm 40 and the second circular diaphragm 50, protrusion is formed
Multiple quadrangle protruding portions 41,51, between the quadrangle protruding portion 41,51 of above-mentioned diaphragm 40,50 formed spatial portion 70 with
The inside in above-mentioned hole 30 is inside set, above-mentioned first diaphragm 40 is opened and closed between brake booster and the neck 22 of Venturi tube 20
The path of the inflow entrance perforation of the balanced reservoir from brake booster to engine is opened and closed in effect, above-mentioned second diaphragm 50
Effect.
Therefore, in the case where trampling brake, the air of above-mentioned brake booster flows into literary mound by the first diaphragm 40
In pipe 20 neck 22, increase the negative pressure inside above-mentioned brake booster, above-mentioned brake booster internal negative pressure into one
In the case that step decreases below the neck 22 and balanced reservoir of above-mentioned Venturi tube 20, then above-mentioned first diaphragm 40, second every
Film 50 is open, and the air of brake booster is moved to the equilibrium water of engine by above-mentioned first diaphragm, the second diaphragm as a result,
The negative pressure of the booster of case and engine increases.
But as shown in Figure 2 b, due to being opened and closed Venturi tube 20 to increase the negative pressure of above-mentioned engine booster
The inside in above-mentioned hole 30 is set in first circular diaphragm 40 in hole 30, the second circular diaphragm 50 and is opened and closed, and above-mentioned braking helps
Spatial portion 70 between the protruding portion 41,51 that the air of power device passes through above-mentioned diaphragm 40,50 flows into Venturi tube, to exist logical
The problem of crossing a small amount of air that above-mentioned narrow spatial portion 70 flows into, the negative pressure of engine booster cannot be made to substantially increase.
Also, as shown in Figure 2 d, the case where the end of 40 device to hole 30 of the first circular diaphragm carries out open or closed work
Under, the end zoom portion in hole 30 is formed as simple right-angled type, thus face peripheral part for the first circular diaphragm 40 and hole
30 corner parts generate point contact repeatedly, therefore there are problems that the durability for being substantially reduced diaphragm element.
Existing technical literature
No. 10-0767486 authorization on October 09th, 2007 of (patent document 1) Korean Patent Publication No.
(patent document 2) Korean Patent Publication 10-1037019 authorizes on May 18th, 2011
(patent document 3) US publication number US 2013/0213510A1 on August 22nd, 2013 open
Summary of the invention
(1) problems to be solved by the invention
As described above in order to solve the problems, such as, the object of the present invention is to provide the increases of the negative pressure of following braking system
Device, that is, being extended in a manner of vertical connection on the downside of neck and one end in the Venturi tube of valve chest
The first diaphragm of opening and closing and the second diaphragm is respectively set in a manner of it can be opened and closed to make the balanced reservoir for flowing into engine in hole
Braking negative pressure further increases, also, by the step cutting pattern portion inner peripheral surface in each hole as above-mentioned air duct to radiate
The spatial portion of multiple space maintenance protrusions and the wide area formed in-between that shape is provided projectingly flows into a large amount of braking
Booster air makes braking negative pressure further increase and increase, and the outer peripheral edge of above-mentioned first diaphragm and the second diaphragm is upward
State the inside between the end of space maintenance protrusion and separated with the state being almost close to, when above-mentioned first diaphragm and second every
It when the opening and closing of film, can be simply and readily opened and closed by preventing flowing, multiple support chips of above-mentioned air inflow aperture stablize branch
The first diaphragm and the second diaphragm for being opened and closed above-mentioned air inflow aperture are supportted, the air bypassed air through between above-mentioned support chip is logical
Road easily flows into.
Another technical object of the present invention is to be formed in and be arranged in a manner of it can be opened and closed the first diaphragm and the second diaphragm
One end corner parts of opening of air duct of air inflow aperture in hole of Venturi tube lower part two sides be also formed with face and connect
Contact portion, so as to when work is opened and closed to the first diaphragm and the second diaphragm, by the one side for making the first diaphragm and the second diaphragm
One end corner parts of the opening of the air duct of peripheral part and air inflow aperture carry out face contact, to obviously increase first
The durability of diaphragm and the second diaphragm.
(2) solution to the problem
To achieve the above object, the present invention is as follows.That is, in the negative pressure aggrandizement apparatus of brake system according to the invention, valve
Shell is set between brake booster and the balanced reservoir of engine, also, be extended in a manner of vertical connection in
The first circular diaphragm of opening and closing is arranged in hole on the downside of the neck of above-mentioned Venturi tube in a manner of it can be opened and closed, so as to being formed in
It is opened and closed between the neck of Venturi tube inside above-mentioned valve chest to narrow as the width of air duct center portion, and
And the Kong Yineng on the downside of the one end of the above-mentioned Venturi tube of the inflow entrance perforation from above-mentioned brake booster to balanced reservoir
The second diaphragm is set in the mode being enough opened and closed, the negative pressure aggrandizement apparatus of above-mentioned braking system is realized in such a way, that is, to hang down
Direct-connected logical mode is extended around the hole on the downside of the neck of above-mentioned Venturi tube and the one end of Venturi tube respectively
Step cutting pattern portion is formed, the inner peripheral surface in above-mentioned step cutting pattern portion has been provided projectingly multiple space maintenance protrusions, above-mentioned sky
Between maintenance with the air inflow aperture in protrusion towards above-mentioned hole formed it is radial and have specified altitude, in the sky towards above-mentioned hole
Air flow inlet is formed between the prominent multiple space maintenance protrusions formed for supplying in a manner of long along horizontal direction
The spatial portion of the air of brake booster, with the multiple of the radial inner peripheral surface for being provided projectingly on each above-mentioned step cutting pattern portion
The first diaphragm of opening and closing and the second diaphragm, the first diaphragm of above-mentioned opening and closing is respectively set in the tip inside of space maintenance protrusion
And second diaphragm be set in a manner of it can be opened and closed and be formed by the top of air inflow aperture, above-mentioned opening and closing in each above-mentioned hole
It is greater than with the diameter of the first diaphragm and the second diaphragm and is formed by the diameter of air inflow aperture in each above-mentioned hole, in above-mentioned air
One end corner parts of the opening of the air duct of inflow entrance are also formed with surface contact part, so as to above-mentioned first diaphragm and
When work is opened and closed in two diaphragms, the air of face peripheral part and air inflow aperture by making the first diaphragm and the second diaphragm
One end corner parts of the opening in channel carry out face contact, to increase the durability of above-mentioned first diaphragm and the second diaphragm.
Wherein it is preferred to above-mentioned space maintenance protrusion towards above-mentioned hole air inflow aperture along horizontal direction
Long mode protrusion is formed.
And, it is preferable that in the inside of the air inflow aperture in the hole for being formed in above-mentioned Venturi tube lower part two sides, in
Centre portion forms multiple support chips, forms air duct between above-mentioned support chip.
It is further preferred that the outer peripheral edge of above-mentioned first diaphragm and the second diaphragm is flowed into radial towards above-mentioned air
The inside that mouth protrusion is formed between the end of multiple space maintenance protrusions separates specified interval, can make above-mentioned first
Diaphragm and the opening and closing of the second diaphragm.
Especially, it is preferable that above-mentioned surface contact part be formed as with selectively with above-mentioned first diaphragm and the second diaphragm one
Face peripheral part carries out face contact and the inclined linear rake of linear with predetermined angular.
And, it is preferable that above-mentioned surface contact part is formed as the selectively one side with above-mentioned first diaphragm and the second diaphragm
The curved arc-shaped rake of peripheral part progress face contact.
(3) The effect of invention
To being described as follows for the effect of the negative pressure aggrandizement apparatus of brake system according to the invention.
First, there is following outstanding effect, that is, being extended the text in valve chest in a manner of vertical connection
The first diaphragm of opening and closing and the second diaphragm is respectively set in the neck of venturi and the hole on the downside of one end in a manner of it can be opened and closed
Come, further increases the braking negative pressure for the balanced reservoir for flowing into engine, also, by as each of above-mentioned air duct
The step cutting pattern portion inner peripheral surface in hole forms wide with the radial multiple space maintenance protrusions being provided projectingly and in-between
The spatial portion of area flows into a large amount of brake booster air, so that braking negative pressure is further increased and is increased, and above-mentioned first
State of the inside between the end with protrusion to be almost close to is held to above-mentioned space dimension in the outer peripheral edge of diaphragm and the second diaphragm
It separates, when the opening and closing of above-mentioned first diaphragm and the second diaphragm, can be simply and readily opened and closed by preventing flowing, above-mentioned sky
Multiple support chips of air flow inlet stablize the first diaphragm and the second diaphragm supported for being opened and closed above-mentioned air inflow aperture, make air
It is easily flowed by the air duct between above-mentioned support chip.
Second, it is being formed in the hole for being provided with the Venturi tube lower part two sides of the first diaphragm and the second diaphragm that can be opened and closed
One end corner parts of opening of air duct of air inflow aperture be also formed with surface contact part, so as to the first diaphragm and
When work is opened and closed in second diaphragm, and it is formed in the face peripheral part and air inflow aperture for making the first diaphragm and the second diaphragm
The surface contact part of one end corner parts of opening of air duct carry out face contact, so as to obviously increase the first diaphragm and the
The durability of two diaphragms.
Detailed description of the invention
Fig. 1 a and Fig. 1 b are the figure that the actuator state of existing mutually different vehicle braking negative pressure enhancer is shown respectively.
Fig. 2 a, Fig. 2 b, Fig. 2 c and Fig. 2 d are that the check-valves for being set to existing another braking negative pressure enhancer is shown respectively
Sectional structure chart, major part plane structure chart and be shown respectively hole for being opened and closed Venturi tube different diaphragms figure.
Fig. 3 is the brief exploded perspective view of the negative pressure aggrandizement apparatus of braking system according to the present invention.
Fig. 4 is the perspective cut-away view of the negative pressure aggrandizement apparatus of braking system of the invention.
Fig. 5 is inside the step of Venturi tube lower-side hole of the invention with radial air inflow protrusion outstanding
And the plane structure chart of the setting state of partition.
Fig. 6 is show structure for being opened and closed the first diaphragm and the second diaphragm as major part of the invention main
Part setting state diagrammatic illustration.
Fig. 7 is show structure for being opened and closed the first diaphragm and the second diaphragm as major part of the invention main
Part setting state section diagrammatic illustration.
Fig. 8 is another reality for showing one end corner parts of the opening of air duct of air inflow aperture illustrated in fig. 7
Apply the section diagrammatic illustration of example.
Description of symbols
100: valve chest 110: spatial portion
120: Venturi tube 121: air duct
122: neck 130: hole
131: air inflow aperture 132: support chip
133: air duct 133a: surface contact part
140: the first diaphragms
150: the second diaphragms 160: step cutting pattern portion
170: space maintains to use protrusion
Specific embodiment
Hereinafter, being carried out specifically referring to preferred embodiment of the attached drawing to the negative pressure aggrandizement apparatus of braking system of the invention
It is bright.
Fig. 3 is the brief exploded perspective view of the negative pressure aggrandizement apparatus of braking system according to the present invention, and Fig. 4 is of the invention
The perspective cut-away view of the negative pressure aggrandizement apparatus of braking system, Fig. 5 be inside the step of Venturi tube lower-side hole of the invention with
Radial air outstanding flows into the plane structure chart of the setting state with protrusion and partition, and Fig. 6 is to show to make for being opened and closed
State diagrammatic illustration is arranged in major part for the structure of the first diaphragm and the second diaphragm of major part of the invention.
As shown in Figures 3 to 6, in the negative pressure aggrandizement apparatus of the braking system of preferred embodiment in accordance with the present invention, valve casing
Body 100 is set between brake booster and the balanced reservoir of engine, also, be extended in a manner of vertical connection in
The first circular diaphragm 140 of opening and closing is arranged in the hole 130 of 122 sides in a manner of it can be opened and closed under the neck of above-mentioned Venturi tube 120,
So that the width as 121 center portion of air duct to the Venturi tube 120 being formed in inside above-mentioned valve chest 100 narrows
Neck 122 between be opened and closed, from inflow entrance from above-mentioned brake booster to balanced reservoir perforation above-mentioned Venturi tube
Hole 130 on the downside of 120 one end in a manner of it can be opened and closed in set the second diaphragm 150.
Also, neck 122 and Venturi tube in above-mentioned Venturi tube 120 are being extended in a manner of vertical connection
It is respectively formed step cutting pattern portion 160 around hole 130 on the downside of 120 one end, the inner peripheral surface in above-mentioned step cutting pattern portion 160
Multiple space maintenance protrusions 170 have been provided projectingly it, above-mentioned space maintenance is with protrusion 170 towards the air in above-mentioned hole 130
Inflow entrance 131 is formed as radial and has specified altitude, and above-mentioned space maintenance is with protrusion 170 towards the sky in above-mentioned hole 130
The protrusion in a manner of long along horizontal direction of air flow inlet 131 is formed.
At this point, the air inflow aperture 131 towards above-mentioned hole 130 in a manner of long along horizontal direction it is prominent formed it is more
The spatial portion 110 for supplying the air of brake booster is formed between a space maintenance protrusion 170.
Also, the inside of the air inflow aperture 131 in the hole 130 for being formed in above-mentioned 120 lower part two sides of Venturi tube, direction
Central portion forms multiple support chips 132, air duct 133 is formed between above-mentioned support chip 132, and with radial protrusion
The multiple space maintenances for being set to the inner peripheral surface in each above-mentioned step cutting pattern portion 160 are set respectively with the tip inside of protrusion 170
Set the first diaphragm 140 of opening and closing and the second diaphragm 150.
Wherein, above-mentioned opening and closing is set on each in a manner of it can be opened and closed with the first diaphragm 140 and the second diaphragm 150
The top that hole 130 is formed by air inflow aperture 131 is stated, above-mentioned opening and closing is big with the diameter of the first diaphragm 140 and the second diaphragm 150
In the diameter for being formed by air inflow aperture 131 in each above-mentioned hole 130.
Also, the outer peripheral edge of above-mentioned first diaphragm 140 and the second diaphragm 150 to radial towards above-mentioned air inflow aperture
The 131 prominent multiple space maintenances formed separate specified interval with the inside between the end of protrusion 170, on it can make
State the first diaphragm 140 and the opening and closing of the second diaphragm 150.
Hereinafter, to the effect according to the negative pressure aggrandizement apparatus of the braking system of the invention formed by structure as described above
And detailed description are as follows for effect.
As shown in Figures 3 to 6, it enters and is formed in from air purifier side by the negative pressure of the balanced reservoir of engine
The neck 122 of Venturi tube 120 inside above-mentioned valve chest 100 to narrow as the width of 121 center portion of air duct
Air, flow velocity accelerates due to by Venturi tube 120 of above-mentioned valve chest 100, generates pressure facilitation phenomenon at the same time.
It is being extended in a manner of vertical connection in the hole 130 of 122 downside of neck of above-mentioned Venturi tube 120 as a result,
The first diaphragm 140 of opening and closing is set in a manner of it can be opened and closed, so as to the air when brake operation through brake booster
It is flowed between the neck 122 to narrow as the width of above-mentioned 121 center portion of air duct and increases negative pressure, also, from upper
State the hole on the downside of the one end for the above-mentioned Venturi tube 120 that brake booster is penetrated through to the inflow entrance of the balanced reservoir of engine
130 in a manner of it can be opened and closed in set the second diaphragm 150 so that above-mentioned braking negative pressure further increases.
On the other hand, neck 122 and venturi in above-mentioned Venturi tube 120 are being extended in a manner of vertical connection
Step cutting pattern portion is respectively formed around the hole 130 of the air duct as brake booster on the downside of the one end of pipe 120
160, in this case, the inner peripheral surface in above-mentioned step cutting pattern portion 160 has been provided projectingly multiple space maintenance protrusions 170,
The air inflow aperture 131 in above-mentioned space maintenance protrusion 170 towards above-mentioned hole 130 is formed as radial and has regulation high
Degree, above-mentioned space maintenance is with protrusion 170 in the air inflow aperture 131 towards above-mentioned hole 130 with the side long along horizontal direction
Formula protrusion is formed, and forms the space for supplying the air of brake booster between above-mentioned multiple space maintenance protrusions 170
Portion 110.
At this point, in multiple spaces maintenance with the radial inner peripheral surface for being provided projectingly on each above-mentioned step cutting pattern portion 160
Opening and closing the first diaphragm 140 and the second diaphragm 150 is respectively set with the tip inside of protrusion 170, can by above-mentioned first every
The air of the opening of film 140 and the second diaphragm 150, brake booster is maintained by above-mentioned space with the sky between protrusion 170
Between portion 110 be flowed into the balanced reservoir of Venturi tube 120 and engine, and maintain by above-mentioned multiple spaces are formed in prominent
The wide area for playing the spatial portion 110 between portion 170 flows into the air of a large amount of brake boosters, so that braking negative pressure be made further to increase
Adduction increases.
Also, the outer peripheral edge of above-mentioned first diaphragm 140 and the second diaphragm 150 to radial towards above-mentioned air inflow aperture
131 protrusions are formed multiple space maintenances and are separated with the inside between the end of protrusion 170 with the state being almost close to, thus
When the opening and closing of above-mentioned first diaphragm 140 and the second diaphragm 150, can be simply and readily opened and closed by preventing flowing.
In particular, above-mentioned opening and closing is set on each in a manner of it can be opened and closed with the first diaphragm 140 and the second diaphragm 150
The top that hole 130 is formed by air inflow aperture 131 is stated, above-mentioned opening and closing is big with the diameter of the first diaphragm 140 and the second diaphragm 150
In the diameter for being formed by air inflow aperture 131 in each above-mentioned hole 130, to be reliably opened and closed 130, above-mentioned each hole shape
At air inflow aperture 131.
In addition, the inside of the air inflow aperture 131 in the hole 130 for being formed in above-mentioned 120 lower part two sides of Venturi tube, direction
Central portion forms multiple support chips 132, forms air duct 133 between above-mentioned support chip 132, makes above-mentioned air inflow aperture
131 multiple support chips 132 stablize the first diaphragm 140 and the second diaphragm supported for being opened and closed above-mentioned air inflow aperture 131
150, and air is easily flowed by the air duct 133 between above-mentioned support chip 132.
Fig. 7 is show structure for being opened and closed the first diaphragm and the second diaphragm as major part of the invention main
Part setting state section diagrammatic illustration.
Embodiment shown in Fig. 7 the difference is that only with the embodiment that illustrates referring to Fig. 3 to Fig. 6, flow into air
One end corner parts of mouthfuls 131 air duct 133 opened are formed with surface contact part 133a, thus together referring to Fig. 3 extremely
Fig. 6 will omit the explanation with the structure of the same symbol.
Referring to Fig. 7, in the negative pressure aggrandizement apparatus of brake system according to the invention, in above-mentioned first diaphragm 140 and the
When work is opened and closed in two diaphragms 150, by a face peripheral part and air stream for making the first diaphragm 140 and the second diaphragm 150
One end corner parts of the air duct 133 of entrance 131 opened carry out face contact, to increase above-mentioned first diaphragm 140
And second diaphragm 150 durability.
For this purpose, in the Venturi tube for being provided with above-mentioned first diaphragm 140 and the second diaphragm 150 in a manner of it can be opened and closed
120 lower parts two sides are formed by one end corner parts shape of the air duct 133 of the air inflow aperture 131 in hole 130 opened
At there is surface contact part 133a.
At this point, as shown in Figure 7, it is preferable that above-mentioned surface contact part 133a be formed as with selectively with above-mentioned first diaphragm
140 and second face peripheral part of diaphragm 150 carry out face contact and incline with the inclined linear of linear of predetermined angular
Inclined portion.
That is, by the surface contact part 133a for being applicable in linear rake as described above, the first diaphragm 140 and second every
When work is opened and closed in film 150, face peripheral part for the first diaphragm 140 and the second diaphragm 150 can be with air inflow aperture 131
One end corner parts for being opened of air duct 133 carry out face contact, thus can obviously increase above-mentioned first diaphragm 140 and
The durability of second diaphragm 150.
Fig. 8 be show the air duct of air inflow aperture illustrated in fig. 7 one end corner parts opened it is another
The section diagrammatic illustration of embodiment.
Embodiment shown in Fig. 8 the difference is that only with the embodiment that illustrates referring to Fig. 3 to Fig. 6, flow into air
One end corner parts of mouthfuls 131 air duct 133 opened are formed with surface contact part 133a, thus together referring to Fig. 3 extremely
Fig. 6 will omit the explanation with the structure of the same symbol.
Referring to Fig. 8, in the negative pressure aggrandizement apparatus of brake system according to the invention, in above-mentioned first diaphragm 140 and the
When work is opened and closed in two diaphragms 150, by a face peripheral part and air stream for making the first diaphragm 140 and the second diaphragm 150
One end corner parts of the air duct 133 of entrance 131 opened carry out face contact, to increase above-mentioned first diaphragm 140
And second diaphragm 150 durability.
For this purpose, in the Venturi tube for being provided with above-mentioned first diaphragm 140 and the second diaphragm 150 in a manner of it can be opened and closed
120 lower parts two sides are formed by one end corner parts shape of the air duct 133 of the air inflow aperture 131 in hole 130 opened
At there is surface contact part 133a.
At this point, as shown in Figure 8, it is preferable that above-mentioned surface contact part 133a be formed as selectively with above-mentioned first diaphragm 140
And second diaphragm 150 a face peripheral part carry out face contact curved arc-shaped rake.
By being applicable in the surface contact part 133a of arc-shaped rake as described above, in the first diaphragm 140 and the second diaphragm
150 when being opened and closed work, and face peripheral part for the first diaphragm 140 and the second diaphragm 150 can be with air inflow aperture 131
One end corner parts for being opened of air duct 133 carry out face contact, thus can obviously increase above-mentioned first diaphragm 140 and the
The durability of two diaphragms 150.
More than, specific embodiments of the present invention are described in detail, but the present invention is not limited thereto, are not being departed from
In the range of thought of the invention, the implementation of various deformation can be carried out by general technical staff of the technical field of the invention,
This deformation is included in the scope of the present invention.
Claims (6)
1. a kind of negative pressure aggrandizement apparatus of braking system, wherein valve chest is set to the equilibrium water of brake booster and engine
Between case, also, in the hole being extended in a manner of vertical connection on the downside of the neck of above-mentioned Venturi tube can be opened and closed
Mode the first circular diaphragm of opening and closing is set, to lead to the Venturi tube that is formed in inside above-mentioned valve chest as air
It is opened and closed between the neck that the width of road center portion narrows, also, in the stream from above-mentioned brake booster to balanced reservoir
Hole on the downside of the one end of the above-mentioned Venturi tube of pass-through entry in a manner of it can be opened and closed in set the second diaphragm, above-mentioned braking system
The negative pressure aggrandizement apparatus of system is characterized in that,
In the hole being extended in a manner of vertical connection on the downside of the neck of above-mentioned Venturi tube and the one end of Venturi tube
Around be respectively formed step cutting pattern portion, the inner peripheral surface in above-mentioned step cutting pattern portion has been provided projectingly multiple space maintenance protrusions
Portion, above-mentioned space maintenance forms radial and has specified altitude with the air inflow aperture in protrusion towards above-mentioned hole, in direction
The air inflow aperture in above-mentioned hole protrudes shape between the multiple space maintenance protrusions formed in a manner of long along horizontal direction
At the spatial portion of the air for supplying brake booster, it is provided projectingly in each above-mentioned step cutting pattern portion with radial
The tip inside of multiple space maintenance protrusions of circumferential surface is respectively arranged to the first diaphragm and the second diaphragm of opening and closing, above-mentioned
It is set in a manner of it can be opened and closed for the first diaphragm of opening and closing and the second diaphragm and is formed by air stream in each above-mentioned hole
The diameter of the top of entrance, above-mentioned the first diaphragm for being opened and closed and the second diaphragm, which is greater than, is formed by air in each above-mentioned hole
The diameter of inflow entrance,
It is also formed with surface contact part in one end corner parts of the opening of the air duct of above-mentioned air inflow aperture, so as to upper
The first diaphragm is stated and when work is opened and closed in the second diaphragm, by making face peripheral part of the first diaphragm and the second diaphragm and empty
One end corner parts of the opening of the air duct of air flow inlet carry out face contact, thus increase above-mentioned first diaphragm and second every
The durability of film.
2. the negative pressure aggrandizement apparatus of braking system according to claim 1, which is characterized in that above-mentioned space maintains to use protrusion
The air inflow aperture in portion towards above-mentioned hole is prominent in a manner of long along horizontal direction to be formed.
3. the negative pressure aggrandizement apparatus of braking system according to claim 1, which is characterized in that be formed in above-mentioned venturi
The inside of the air inflow aperture in the hole of pipe lower part two sides forms multiple support chips towards central portion, the shape between above-mentioned support chip
At air duct.
4. the negative pressure aggrandizement apparatus of braking system according to claim 1, which is characterized in that above-mentioned first diaphragm and second
The outer peripheral edge of diaphragm to radial towards the prominent end for forming multiple space maintenance protrusions of above-mentioned air inflow aperture
Between inside separate specified interval, be opened and closed above-mentioned first diaphragm and the second diaphragm.
5. the negative pressure aggrandizement apparatus of braking system according to claim 1, which is characterized in that above-mentioned surface contact part is formed as
Selectively to carry out face contact with face peripheral part for above-mentioned first diaphragm and the second diaphragm and there is the straight of predetermined angular
Linear inclined linear rake.
6. the negative pressure aggrandizement apparatus of braking system according to claim 1, which is characterized in that above-mentioned surface contact part is formed as
The curved arc-shaped rake of face contact is selectively carried out with face peripheral part for above-mentioned first diaphragm and the second diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711160559.0A CN109808662A (en) | 2017-11-20 | 2017-11-20 | The negative pressure aggrandizement apparatus of braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711160559.0A CN109808662A (en) | 2017-11-20 | 2017-11-20 | The negative pressure aggrandizement apparatus of braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109808662A true CN109808662A (en) | 2019-05-28 |
Family
ID=66599393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711160559.0A Pending CN109808662A (en) | 2017-11-20 | 2017-11-20 | The negative pressure aggrandizement apparatus of braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109808662A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202694A (en) * | 2021-05-18 | 2021-08-03 | 李慧 | Offshore wind driven generator with speed reduction device |
| CN114466501A (en) * | 2022-02-16 | 2022-05-10 | 中国原子能科学研究院 | a relaxation method |
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|---|---|---|---|---|
| US5291916A (en) * | 1992-12-28 | 1994-03-08 | Excel Industries, Inc. | Check valve |
| CN1724298A (en) * | 2004-07-23 | 2006-01-25 | 福特环球技术公司 | Vacuum enhancing check valve |
| CN101096208A (en) * | 2006-06-26 | 2008-01-02 | 现代自动车株式会社 | Vacuum intensifier for vehicle brake |
| CN103407441A (en) * | 2013-08-16 | 2013-11-27 | 河北亚大汽车塑料制品有限公司 | Venturi valve and vacuum power assisting device |
| US20160356250A1 (en) * | 2014-04-04 | 2016-12-08 | Dayco Ip Holdings, Llc | Check valves and venturi devices having the same |
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2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5291916A (en) * | 1992-12-28 | 1994-03-08 | Excel Industries, Inc. | Check valve |
| CN1724298A (en) * | 2004-07-23 | 2006-01-25 | 福特环球技术公司 | Vacuum enhancing check valve |
| CN101096208A (en) * | 2006-06-26 | 2008-01-02 | 现代自动车株式会社 | Vacuum intensifier for vehicle brake |
| CN103407441A (en) * | 2013-08-16 | 2013-11-27 | 河北亚大汽车塑料制品有限公司 | Venturi valve and vacuum power assisting device |
| US20160356250A1 (en) * | 2014-04-04 | 2016-12-08 | Dayco Ip Holdings, Llc | Check valves and venturi devices having the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202694A (en) * | 2021-05-18 | 2021-08-03 | 李慧 | Offshore wind driven generator with speed reduction device |
| CN113202694B (en) * | 2021-05-18 | 2022-05-06 | 李慧 | Offshore wind driven generator with speed reduction device |
| CN114466501A (en) * | 2022-02-16 | 2022-05-10 | 中国原子能科学研究院 | a relaxation method |
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Application publication date: 20190528 |
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