CN106103220B - Master cylinder and liquid reserve tank - Google Patents
Master cylinder and liquid reserve tank Download PDFInfo
- Publication number
- CN106103220B CN106103220B CN201480058581.2A CN201480058581A CN106103220B CN 106103220 B CN106103220 B CN 106103220B CN 201480058581 A CN201480058581 A CN 201480058581A CN 106103220 B CN106103220 B CN 106103220B
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- China
- Prior art keywords
- reserve tank
- liquid reserve
- groove
- groove portion
- face
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/26—Reservoirs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
- B60T11/22—Master control, e.g. master cylinders characterised by being integral with reservoir
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L3/00—Brake-actuating mechanisms; Arrangements thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
- Sealing Devices (AREA)
- Diaphragms And Bellows (AREA)
Abstract
It includes liquid reserve tank wall portion, surrounds the storage room of storage brake fluid and formed and the flowing of the atmosphere in vehicle driving is born in upper opening, outside；Cover (161) covers the opening of liquid reserve tank wall portion；Storage room is divided into liquid chamber and gas chamber by separator；Atmosphere road (251), (271) are equipped in cover (161) or liquid reserve tank wall portion, the atmosphere road has in the direction of advance side of vehicle to be passed through around opening portion (253) from storage room to external opening, (273) and is connected in the position for deviateing opening portion (253), (273) with gas chamber.
Description
Technical field
The present invention relates to a kind of for motor vehicle master cylinder and liquid reserve tanks.
The Patent 2013-228332 CLAIM OF PRIORITY that the application is filed an application based on November 1st, 2013 in Japan,
And its content is incorporated herein.
Background technique
In the presence of the master cylinder constructed as follows: configuring separator between storage bin and the lid for covering its upper opening, utilize this
The inside of storage bin is separated (referring for example to patent document 1) up and down by separator.
Existing technical literature
Patent document
Patent document 1:(Japan) tekiaki 61-41660 bulletin
Summary of the invention
The technical problems to be solved by the invention
In above-mentioned master cylinder, brake fluid is possible to leak out because of the flowing of the atmosphere in vehicle driving.
The present invention provides the master cylinder and liquid reserve tank of a kind of leakage for being able to suppress brake fluid.
Solve the technological means of technical problem
1st mode according to the present invention, master cylinder include cylinder body, can be slided by the piston that the operation of brake bar is promoted
It is set to the cylinder body dynamicly；Liquid reserve tank stores brake fluid set on the top of the cylinder body.The liquid reserve tank includes liquid reserve tank wall portion, packet
It encloses the storage room for storing the brake fluid and is formed and upper opening, the flowing of the atmosphere in vehicle driving is born in outside；Cover,
Cover the opening of the liquid reserve tank wall portion；The storage room is divided into liquid chamber and gas chamber by separator.In the cover or the storage
Liquid case wall portion is equipped with atmosphere road, which has in the direction of advance side of vehicle to the opening portion of external opening,
Pass through around the storage room and is connected in the position for deviateing the opening portion with the gas chamber.
In the 1st mode of the invention, it is also possible to the atmosphere road in the cover and the liquid reserve tank wall portion
Between formed deviously.
2nd mode according to the present invention connect with the master cylinder for supplying brake fluid to wheel cylinder and stores the storage of the brake fluid
Liquid case includes liquid reserve tank wall portion, surrounds the storage room for storing the brake fluid and is formed and vehicle row is born in upper opening, outside
The flowing of atmosphere in sailing；Cover covers the opening of the liquid reserve tank wall portion；Separator, by the storage room be divided into liquid chamber and
Gas chamber.It is equipped with atmosphere road in the cover or the liquid reserve tank wall portion, the atmosphere road is in the direction of advance side of vehicle
Position and the gas with passing through around the storage room to the opening portion of external opening and deviateing the opening portion
Room connection.
In the 1st mode of the invention or the 2nd mode, be also possible to the atmosphere road the cover with it is described
It is formed deviously between liquid reserve tank wall portion.
In the 1st mode of the invention or the 2nd mode, it is also possible to the atmosphere road in the direction of retreat of vehicle
Side is connected to the gas chamber.
In the 1st mode of the invention or the 2nd mode, it is also possible to the atmosphere road in the side surface direction of vehicle
Side is connected to the gas chamber.
In the 1st mode of the invention or the 2nd mode, it is also possible to the atmosphere road in the direction of advance of vehicle
Side is connected to the gas chamber.
Invention effect
According to the mode of aforementioned present invention, it is possible to provide a kind of master cylinder and liquid reserve tank of the leakage for being able to suppress brake fluid.
Detailed description of the invention
Fig. 1 is the top view for indicating the 1st embodiment of the invention.
Fig. 2 is the cross-sectional view for indicating the 1st embodiment of the invention.
Fig. 3 is the cross-sectional view for indicating the 1st embodiment of the invention.
Fig. 4 is the stereogram exploded view for indicating a part of the 1st embodiment of the invention.
Fig. 5 is the back view for indicating the cover of the 1st embodiment of the invention.
Fig. 6 is the back view for indicating the cover of the 2nd embodiment of the invention.
Fig. 7 is the back view for indicating the cover of the 3rd embodiment of the invention.
Fig. 8 is the partial sectional view for indicating the 4th embodiment of the invention.
Specific embodiment
<the 1st embodiment>
Illustrate the 1st embodiment of the invention based on FIG. 1 to FIG. 5.As shown in Figure 1, the 1st embodiment is 10 structure of liquid reserve tank
At the one-piece type master cylinder 11 of the liquid reserve tank of a part of master cylinder 11.The master cylinder 11 is used for the machine installed with the state exposed to outside
In the riding vehicles such as dynamic two wheeler, tricycle and carriage.In the present embodiment, pacify by the master cylinder 11 for including liquid reserve tank 10
State loaded on vehicle is illustrated, at this point, by preceding on vehicle as before, by rear on vehicle as after, will be on vehicle
It is left as it is left, right on vehicle be illustrated as the right side.1st embodiment is the front-wheel system operated by the right hand of driver
The master cylinder 11 employed.Present embodiment can also apply to master cylinder and clutch by the rear service brake of the left-handed operation of driver
Device master cylinder, in this case, the left and right in following explanation is opposite.
Master cylinder 11 is configured in the position that traveling wind is directly blown onto the car.Specifically, master cylinder 11 is mounted on
On the mounting portion 16 of the right side of the steering hand handle (ス テ ア リ Application グ バ ー) 15 of vehicle.Hand handle 15 is turned to by will be cylindric
Pipe portion part suitably bending machining and formed, and at least install master cylinder 11 mounting portion 16 outer peripheral surface become barrel surface.
It is metal main element 21, holder 22, secure component 23, brake bar 24 and supporting part that master cylinder 11, which has,
Part 25.Main element 21 is to be configured in the front side for turning to the mounting portion 16 of hand handle 15 by integrally formed product made of casting.
On main element 21, installation portions 30 are formed in a manner of rearward outstanding in its right side.Main element 21 passes through benefit
The mounting portion 16 of hand handle 15 is turned to the installation portions 30 and the clamping of holder 22 and is installed in and is turned to hand handle 15.Portions are installed
30 with holder 22 be combined together by secure component 23 clamp turn to hand handle 15, wherein the secure component 23 be bolt.
Note that, for the relationship indicated with top view, illustrating only a secure component 23, but secure component 23 in Fig. 1
It is to have two upper.
Main element 21 is formed with bar supporting part 31 in a manner of outstanding forwards in the lower part of its right side.In the bar branch
In bearing portion 31, brake bar 24 is installed using the bearing part 25 being made of bolt.Bearing part 25 is installed on along the vertical direction
Bar supporting part 31.Brake bar 24 is pivoted about with the bearing part 25.Brake bar 24 is on the front edge for turning to hand handle 15
Hand handle 15 is turned to extend to the right.On main element 21, on the upside of bar supporting part 31 that is, the top of right side, formed
There is the mirror mounting portion 32 for installing rearview mirror (not shown).
On main element 21, equipped with the cylinder body 35 extended to the left from the base end side of installation portions 30.The cylinder body 35 exists
The front for turning to hand handle 15 configures in a manner of along the axial direction of its mounting portion 16.As shown in Fig. 2, the cylinder body 35 is formed in main body
The lower part of component 21.Liquid reserve tank wall portion 36 is formed on the top of cylinder body 35.The liquid reserve tank wall portion 36 has along up and down direction
Tubular shape.Liquid reserve tank wall portion 36 forms the storage of storage brake fluid with by its closed liquid reserve tank bottom 37 in 35 side of cylinder body
Deposit room 38.Liquid reserve tank bottom 37 includes a part of cylinder body 35.
Cylinder body 35 has the shape of the bottomed tube for the cylinder bore 45 for forming oriented 31 side opening of bar supporting part.The cylinder bore
45 along it is shown in FIG. 1 turn to hand handle 15 mounting portion 16 axial direction.As shown in Fig. 2, cylinder bore 45 is from itself and bar supporting part 31
46 side of cylinder base of opposite side, which is risen successively, has main bore portion 51, chimeric hole portion 53 and peristoma hole portion 54.The cylinder bore 45
Central axis become cylinder body 35 axis.Hereinafter, the axis direction of cylinder body 35 is known as cylinder body axial direction.
The axial length longest in cylinder bore 45 of main bore portion 51.Chimeric hole portion 53 is formed in main bore portion 51 and cylinder base
46 opposite sides that is, right side.Chimeric hole portion 53 has the internal diameter bigger than main bore portion 51.Peristoma hole portion 54 is formed in embedded hole
The side opposite with cylinder base 46 in portion 53.Peristoma hole portion 54 is in cylinder bore 45 near the side opposite with cylinder base 46
Configuration.Peristoma hole portion 54 is formed as bigger and more slightly smaller than the internal diameter of chimeric hole portion 53 than the internal diameter of main bore portion 51.
In cylinder base 46, screw hole portion 55 is formed in a manner of being penetrated through.The maximum inner diameter in screw hole portion 55 compares main aperture
The internal diameter in portion 51 is small.The connector of braking piping 58 is screwed together in the screw hole portion 55, wherein braking piping 58 is to use two point in Fig. 2
What scribing line indicated.Braking piping 58 is connected to the wheel cylinder 59 of the brake apparatus such as disk brake set on wheel side.
In liquid reserve tank bottom 37, it is formed with the intercommunicating pore 63 and intercommunicating pore 64 for being connected to cylinder bore 45 with storage room 38.Even
Through-hole 63 is compared to intercommunicating pore 64 more by 46 side of cylinder base of cylinder body axial direction that is, left side configuration.Intercommunicating pore 63, which has, is configured at storage
Major diameter hole portion 65 and the Bi Qi diameter for depositing 38 side of room are small and be configured at the path hole portion 66 of 45 side of cylinder bore.Intercommunicating pore 63 is in major diameter
Hole portion 65 is open to storage room 38, in path hole portion 66 to 45 inner opening of cylinder bore.Intercommunicating pore 64, which has, is configured at storage room 38
The major diameter hole portion 68 and Bi Qi diameter of side are small and are configured at the path hole portion 69 of 45 side of cylinder bore.Intercommunicating pore 64 is in major diameter hole portion 68
It is open to storage room 38, in path hole portion 69 to 45 inner opening of cylinder bore.The path hole portion 69 of intercommunicating pore 64 is than intercommunicating pore 63
66 diameter of path hole portion is big.
Master cylinder 11 has reset spring 75, piston 76, cup seal 77, o-ring 78, retaining ring 79, protective cover 80 and pushes away
Pressing spring 81.They are configured in above-mentioned cylinder bore 45.Reset spring 75, piston 76, retaining ring 79 and biasing springs 81 are
Made of metal.Cup seal 77, o-ring 78 and protective cover 80 are made of rubber elastomeric material.
Piston 76 has axle portion 85, flange part 86, axle portion 87, flange part 88, axle portion 89, axle portion 90, axle portion 91, flange part
92, axle portion 93, axle portion 94, axle portion 95, axle portion 96 and flange part 97.Piston 76 is inserted into the peristoma hole portion 54 in cylinder bore 45
Side.
Axle portion 85 is in piston 76 near 46 side of cylinder base that is, left side is formed.Flange part 86 be configured at axle portion 85 with
The opposite side of cylinder base 46 that is, right side, it is bigger than 85 diameter of axle portion.Axle portion 87 is configured at flange part 86 and cylinder base
46 opposite sides, it is smaller than 85 diameter of axle portion.Flange part 88 is configured at the side opposite with cylinder base 46 of axle portion 87, than convex
86 diameter of edge is big.Axle portion 89 is configured at the side opposite with cylinder base 46 of flange part 88, smaller than 88 diameter of flange part.Axis
Portion 90 is configured at the side opposite with cylinder base 46 of axle portion 89, identical as 88 diameter of flange part.Axle portion 91 is configured at axle portion
90 side opposite with cylinder base 46, it is smaller than 90 diameter of axle portion.
Flange part 92 is configured at the side opposite with cylinder base 46 of axle portion 91, identical as 90 diameter of axle portion.Axle portion 93
It is configured at the side opposite with cylinder base 46 of flange part 92, it is smaller than 92 diameter of flange part.Axle portion 94 is configured at axle portion 93
The side opposite with cylinder base 46, it is smaller than 93 diameter of axle portion.Axle portion 95 is configured at the opposite with cylinder base 46 of axle portion 94
Side, it is bigger than 94 diameter of axle portion.Axle portion 96 is configured at the side opposite with cylinder base 46 of axle portion 95, than 95 diameter of axle portion
It is small.Flange part 97 is configured at the side opposite with cylinder base 46 of axle portion 96, bigger than 96 diameter of axle portion.Flange part 97 is in piston
It is formed in 76 near the side opposite with cylinder base 46.Piston 76 flange part 88, axle portion 90 and flange part 92 slideably
It is embedded in the main bore portion 51 of cylinder bore 45.Piston 76 is slidingly disposed at cylinder body 35 as a result, is moved along the axial cylinder.
Reset spring 75 is the helical spring of the bigger cone cell of axial one end diameter compared with another side.Reset spring
75 major diameter side end abutment in cylinder base 46, so that the axle portion 85 of piston 76 is inserted into inside in the end of path side, and
And it is connected to flange part 86.
Cup seal 77 has the shape of C-shaped of the shape of the section comprising central axis to a side opening.Cupuliform
Sealing element 77 is configured between the flange part 86,88 of piston 76, and is embedded in axle portion 87.Cup seal 77, which becomes, makes open side
It is configured at the state of 86 side of flange part, and the inner peripheral surface sliding contact of peripheral part and main bore portion 51.
O-ring 78 is configured between the axle portion 90 and flange part 92 of piston 76, and is embedded in axle portion 91.Outside o-ring 78
The inner peripheral surface sliding contact of circumference and main bore portion 51.Retaining ring 79 has the shape of C-shaped.Retaining ring 79 is fitted and fixed in chimeric hole portion
53.It is circumferentially spaced to alternately form multiple hooking sheet portions (not shown) extended to radially inner side on retaining ring 79.These
Hooking sheet portion can be abutted with the end face of 93 side of axle portion of the flange part 92 of piston 76.Retaining ring 79 limits the spring that is reset as a result,
75 pistons 76 pushed are deviate from from cylinder bore 45.Protective cover 80 is cylindrical in shape, one end be configured at the axle portion 95 of piston 76 with
Between flange part 97, and it is embedded in axle portion 96.Protective cover 80 is in such a way that another side is located at chimeric 53 side of hole portion in peristoma hole
Extend in portion 54, and the other end is pushed spring 81 and presses against on the inner peripheral surface of peristoma hole portion 54.
The o-ring 78 of the ratio piston 76 of cylinder bore 45 is more braked liquid by the part of 46 side of cylinder base and fills up.Cupuliform is close
Sealing 77 is formed using the part of piston 76 and 55 side of screw hole portion of main bore portion 51 and is connected to wheel cylinder 59 via braking piping 58
Hydraulic pressure chamber 101.
The pressing portion 102 of brake bar 24 is configured in the side opposite with cylinder base 46 of the flange part 97 of piston 76.
If operating brake bar 24, pressing portion 102 pushes piston 76 to the direction to 46 side of cylinder base that is, left side movement.In this way
One, piston 76 and cup seal 77 are integrally mobile to the direction for reducing hydraulic pressure chamber 101.As a result, from hydraulic pressure chamber 101 via
Braking piping 58 supplies brake fluid to wheel cylinder 59.Also that is, by the operation of brake bar 24, piston 76 is to the direction of cylinder base 46
It promotes and generates brake fluid pressure.In addition, piston 76 is returned using the active force of reset spring 75 if releasing the operation of brake bar 24
It returns, the brake fluid rework solution pressure chamber 101 of wheel cylinder 59.Here, if the amount of the brake friction material of brake apparatus is reduced, wheel cylinder 59
The volume of the hydraulic pressure chamber of side increases.About master cylinder 11, when brake bar 24 is not in mode of operation, hydraulic pressure chamber 101 utilizes connection
Hole 63 is connected to storage room 38, therefore the brake fluid of corresponding amount is fed from storage room 38 to hydraulic pressure chamber 101.
Liquid reserve tank wall portion 36 is by the antetheca on front side of being configured at the sidewall portion 111 of 46 side of cylinder base that is, left side, being configured at
Portion 112, the sidewall portion 113 for being configured at the side opposite with cylinder base 46 that is, right side, be configured at rear side it is shown in Fig. 3 after
Angle wall portion 115 and sidewall portion 111 shown in Fig. 4 between wall portion 114, front wall portion 112 and sidewall portion 113 and rear wall parts 114 it
Between angle wall portion 116 constitute.Liquid reserve tank wall portion 36 has the shape of four side tubulars.Liquid reserve tank wall portion 36 utilizes these sidewall portions
111, front wall portion 112, angle wall portion 115, sidewall portion 113, rear wall parts 114 and angle wall portion 116 are surrounded storage room 38 and are formed, and on
Portion's opening.
As shown in figure 3, middle position in above-below direction is formed with protrusion outstanding forwards on front wall portion 112
118.Middle thereof in the protrusion 118 is formed with fenestra 119.The front side of the fenestra 119 become major diameter hole portion 120, rear side at
For the lesser path hole portion 121 of diameter compared with the major diameter hole portion 120.Master cylinder 11 has the fenestra for being installed on main element 21
119 window component 122 and seal member 123.Window component 122 is made of translucent material.Window component 122 is via cricoid sealing
Component 123 is fixed on major diameter hole portion 120.Via the window component 122, the storage that can be visually observed in liquid reserve tank wall portion 36
Deposit the liquid level of the brake fluid in room 38.
On the outside of the upper end of liquid reserve tank wall portion 36, pleurapophysis more outside than lower portion is annularly formed with throughout complete cycle
Protrusion end edge portion 131 out.In addition, being annularly formed with throughout complete cycle with wall thickness in the upper inner of liquid reserve tank wall portion 36
The mode for being thinner than lower portion forms step-like stage portion 141.
As shown in figure 4, angle wall portion 115 is with more prominent more inwardly (38 side of storage room) than front wall portion 112 and sidewall portion 113
Shape.Angle wall portion 116 has the shape more protruded inwardly than sidewall portion 111 and rear wall parts 114.At angle, wall portion 115 is upper
Portion is formed with screw hole 148.At angle, the top of wall portion 116 is formed with screw hole 149.
In liquid reserve tank wall portion 36, the upper surface 151 of sidewall portion 111 and the upper surface 152 of front wall portion 112 are continuous, the upper end
Face 152 and the upper surface 155 of angle wall portion 115 are continuous, and the upper surface 153 of the upper surface 155 and sidewall portion 113 is continuous.In addition, should
Upper surface 153 and the upper surface 154 of rear wall parts 114 are continuous, and the upper surface 156 of the upper surface 154 and angle wall portion 116 is continuous, should
Upper surface 156 and upper surface 151 are continuous.These all flat surfaces in upper surface 151~156, are configured in same plane.These
Upper surface 151~156 constitutes the frame-shaped end face 157 in four border shapes on the whole.It is identical as angle wall portion 115,116, upper surface
155 have than upper surface 152,153 more to their interior angle side shape outstanding.Upper surface 156 is more than upper surface 151,154
To their interior angle side shape outstanding.
Master cylinder 11 has metal cover 161, metal cover installing component 162,162 and by rubber systems such as EPDM
Elastic material constitute separator 163.
Separator 163 has the loading plate portion 171 being positioned on the upper surface 151 of sidewall portion 111, is positioned in front wall portion
Loading plate portion 172 on 112 upper surface 152 and the loading plate portion 173 being positioned on the upper surface 153 of sidewall portion 113.Separately
Outside, separator 163 has the loading plate portion 174 being positioned on the upper surface 154 of rear wall parts 114, is positioned in the upper of angle wall portion 115
Loading plate portion 175 on end face 155 and the loading plate portion 176 being positioned on the upper surface 156 of angle wall portion 116.Loading plate portion 171
Continuous with loading plate portion 172, loading plate portion 172 and loading plate portion 175 are continuous, and loading plate portion 175 and loading plate portion 173 are continuous.
In addition, loading plate portion 173 and loading plate portion 174 are continuous, loading plate portion 174 and loading plate portion 176 are continuous, loading plate portion 176 with
Loading plate portion 171 is continuous.
These all tabulars in loading plate portion 171~176, are configured in same plane.These loading plate portions 171~
176 constitute the frame-shaped plate portion 177 in four border shapes on the whole.It is identical as the upper surface 155 of angle wall portion 115, loading plate portion 175
For than loading plate portion 172,173 more to their interior angle side shape outstanding, mounting identical as the upper surface 156 of angle wall portion 116
Plate portion 176 is than loading plate portion 171,174 more to their interior angle side shape outstanding.In loading plate portion 175, it is formed with it
Along the insertion hole 178 of plate thickness direction perforation, in loading plate portion 176, it is formed with the insertion hole 179 by it along the perforation of plate thickness direction.
As shown in figure 3, separator 163 has the outer of the tubular extended downward from the inner circumferential end edge portion in frame-shaped plate portion 177
Side cylindrical portion 181, the outside lower board unit 182 of the frame-shaped extended inwardly from the lower end edge portion of outside cylindrical portion 181, under outside
The intermediate cylindrical portion 183 for the tubular that the inner circumferential end edge portion in plate portion 182 extends upwards, from the upper end edge portion of intermediate cylindrical portion 183
The inside tubular of the upper plate portion 184 of the frame-shaped extended inwardly, the tubular extended downward from the inner circumferential end edge portion of upper plate portion 184
Portion 185 and lower end edge portion from inside cylindrical portion 185 extend inwardly and will be under the insides of the closed plate of inside cylindrical portion 185
Plate portion 186.These outside cylindrical portions 181, outside lower board unit 182, intermediate cylindrical portion 183, upper plate portion 184, inside cylindrical portion 185
And inside lower board unit 186 is configured in storage room 38.
Cover 161 is by integrally formed product made of casting.Cover 161 covers the upper opening of liquid reserve tank wall portion 36,
And the frame-shaped end face 157 of its back side and liquid reserve tank wall portion 36 clamps the frame-shaped plate portion 177 of separator 163.In other words, separate
Part 163 is directly clamped by the liquid reserve tank wall portion 36 of main element 21 and cover 161.As shown in figure 4, cover 161 has liquid storage
The main board portion 190 of the upper opening covering in tank wall portion 36.In the main board portion 190, the side edge part 191 in left side and the leading edge potion of front side
192 is continuous, and the side edge part 193 on leading edge potion 192 and right side is continuous, and the trailing edge potion 194 of side edge part 193 and rear side is continuous, trailing edge potion
194 is continuous with side edge part 191.
These side edge parts 191, leading edge potion 192, side edge part 193 and trailing edge potion 194 constitute on the whole in four border shapes
Frame-shaped edge 195.The outer end face of leading edge potion 192 and the outer end face of trailing edge potion 194 are formed as the plane being parallel to each other.Side edge part
191 outer end face and the outer end face of side edge part 193 are formed as the mirror-symmetrical bending that convex is formed to mutually opposite direction
Face.The peripheral end face of frame-shaped edge 195 is the shape of a circle bigger than the periphery end edge portion of the frame-shaped end face 157 of liquid reserve tank wall portion 36
Shape, and be the shape of two circle bigger than the peripheral end face in the frame-shaped plate portion 177 of separator 163.In cover 161, before main board portion 190
Corner between edge 192 and the side edge part 193 on right side utilizes the cover installing component 162 being made of screw to be fixed on liquid reserve tank
Wall portion 36, the corner between the trailing edge potion 194 of main board portion 190 and the side edge part 191 in left side utilize the cover being made of screw to pacify
Dress component 162 is fixed on liquid reserve tank wall portion 36.
In main board portion 190, the corner between leading edge potion 192 and side edge part 193 is formed with for making cover mounting portion
The insertion hole 198 that part 162 passes through, the corner between trailing edge potion 194 and side edge part 191 are formed with for making cover installing component
162 insertion holes 199 passed through.As shown in the back view of Fig. 5, in cover 161, in the insertion hole 198,199 than main board portion 190
In the range of more in the inner part, it is formed with the tubular protruding portion 200 from the back side to vertical direction square tube shape outstanding.The tubular is prominent
Portion 200 has the protruding portion 201 along side edge part 191, the protruding portion 202 along leading edge potion 192, along the prominent of side edge part 193
Portion 203 and the protruding portion 204 along trailing edge potion 194 out.In addition, tubular protruding portion 200 has the insertion hole in insertion hole 198
199 sides will dash forward by the protruding portion 205 that protruding portion 202 is connected with protruding portion 203 and in 198 side of insertion hole of insertion hole 199
The protruding portion 206 that portion 201 and protruding portion 204 connect out.As shown in Figures 2 and 3, tubular protruding portion 200 is inserted into separation
Between the outside cylindrical portion 181 of part 163 and intermediate cylindrical portion 183.
In cover 161, formed just like Fig. 2, as shown in Figure 5 from the outer end edge of the side edge part 191 of main board portion 190
The back side is relative to the prominent wall portion 211 vertically outstanding of main board portion 190 and as shown in figs. 3 and 5 like that before main board portion 190
The back side of the outer end edge of edge 192 is relative to the prominent wall portion 212 vertically outstanding of main board portion 190.In addition, in cover 161
On, it is formed just like Fig. 2, as shown in Figure 5 from the back side of the outer end edge of the side edge part 193 of main board portion 190 relative to main board portion
190 prominent wall portions 213 vertically outstanding and as shown in figs. 3 and 5 like that from the outer end edge of the trailing edge potion 194 of main board portion 190
The back side relative to the prominent wall portion 214 vertically outstanding of main board portion 190.As shown in figure 5, prominent wall portion 211 and prominent wall portion
212 is continuous, and prominent wall portion 212 and prominent wall portion 213 are continuous, and prominent wall portion 213 and prominent wall portion 214 are continuous, prominent wall portion 214
It is continuous with prominent wall portion 211.Wall portion 211~214 is protruded as a result, constitutes the frame-shaped wall portion 215 in four border shapes on the whole.It is prominent
Wall portion 212,214 has the linear shape being parallel to each other out.Prominent wall portion 211,213 has to mutually opposite direction shape
At the shape of the mirror-symmetrical arc-shaped of convex.
In main board portion 190, protrudes the face 221 between wall portion 211 and protruding portion 201 and prominent wall portion 212 and protrude
Face 222 between portion 202 is continuous, and the face 225 between the face 222 and prominent wall portion 212,213 and protruding portion 205 connects
It is continuous.In addition, the face 223 between the face 225 and prominent wall portion 213 and protruding portion 203 is continuous, the face 223 and highlighted wall
Face 224 between portion 214 and protruding portion 204 is continuous.In addition, the face 224 and prominent wall portion 211,214 and protruding portion 206
Between face 226 it is continuous, the face 226 and face 221 are continuously.These all flat surfaces of face 221~226, are configured at
In same plane.These faces 221~226 constitute the frame-shaped face 227 in four border shapes on the whole.Face 221 is along prominent
Wall portion 211 out, face 222 is along prominent wall portion 212, and face 223 is along prominent wall portion 213, and face 224 is along prominent wall portion
214.Face 222,224 is linear in being parallel to each other, and face 221,223 is in arc-shaped.
Face 225 is wider than face 222 with width in the front-back direction, the width of left and right directions is wider than face 223 and to they
Interior angle side mode outstanding expand.Insertion hole 198 is formed in the middle position of the face 225.Face 226 is with front-rear direction
Width be wider than face 224, the width of left and right directions is wider than face 221 and expands to their interior angle side mode outstanding.?
The middle position of the face 226 is formed with insertion hole 199.
As shown in Fig. 2, the frame-shaped plate portion 177 of separator 163 is held in frame-shaped end face 157 and the lid of liquid reserve tank wall portion 36
The frame-shaped face 227 in portion 161.Also that is, loading plate portion 171 is held in upper surface 151 and face 221, loading plate portion 173 is pressed from both sides
It is held in upper surface 153 and face 223.In addition, as shown in figure 3, loading plate portion 172 be held in upper surface 152 and face 222,
Loading plate portion 174 is held in upper surface 154 and face 224.Also, loading plate portion 175 shown in Fig. 4 is held in upper surface
155 and shown in fig. 5 facial 225, loading plate portion 176 shown in Fig. 4 is held in upper surface 156 and face shown in fig. 5
226。
In Fig. 5, relative to cover 161 indicated by the solid line, the frame-shaped plate portion of separator 163 is indicated with double dot dash line
177.Under above-mentioned clamp position, the outer end face in loading plate portion 171 is to abut or the inner wall of proximity state and prominent wall portion 211
Relatively, the outer end face in loading plate portion 172 is to abut or proximity state is opposite with the prominent inner wall of wall portion 212, loading plate portion 173
Outer end face to abut or proximity state is opposite with the prominent inner wall of wall portion 213, the outer end face in loading plate portion 174 to abut or
Proximity state is opposite with the prominent inner wall of wall portion 214.In addition, the outer end face in loading plate portion 175 with abut or proximity state with
The inner wall in the corner of prominent wall portion 212,213 is opposite, and the outer end face in loading plate portion 176 is to abut or proximity state and highlighted wall
The inner wall in the corner in portion 211,214 is opposite.
In 157 He of frame-shaped end face that the frame-shaped plate portion 177 of separator 163 shown in Fig. 4 is held on to liquid reserve tank wall portion 36
In the state of the frame-shaped face 227 of cover 161 shown in fig. 5, the cover installing component 162 of a side shown in Fig. 4 is inserted into
In the insertion hole 178 formed in the loading plate portion 175 of the insertion hole 198 and separator 163 that are formed in cover 161, and be allowed to
The screw hole 148 for being formed in the upper surface 155 of liquid reserve tank wall portion 36 screws togather.In addition, the cover installing component 162 of another party is inserted
In the insertion hole 179 formed in the loading plate portion 176 of the insertion hole 199 and separator 163 that are formed on to cover 161, and it is allowed to
It is screwed togather with the screw hole 149 for the upper surface 156 for being formed in liquid reserve tank wall portion 36.In this way, cover 161 and separator 163 are installed on
Main element 21.As shown in Figure 2 and Figure 3, the height from frame-shaped face 227 to the protrusion front end face of frame-shaped wall portion 215 is than the installation
The thickness in the frame-shaped plate portion 177 of the separator 163 under state is small.Therefore, under the installation condition, in the frame-shaped wall of cover 161
Gap 230 is equipped between the upper surface of the frame-shaped end face 157 of the front end face and liquid reserve tank wall portion 36 of the lower end in portion 215.
Storage room 38 is divided into the liquid chamber 231 for storing brake fluid of downside and the gas chamber 232 of upside by separator 163.By
This, inhibits the brake fluid of liquid chamber 231 directly to contact with outside air, inhibits the moisture absorption of brake fluid.Moreover, separator 163 passes through
It deforms, the variation of the liquid measure of the brake fluid of liquid chamber 231 can be followed.Gas chamber 232 is communicated with the atmosphere as described later.
The liquid reserve tank wall portion 36 of main element 21 and liquid reserve tank bottom 37, window component shown in Fig. 3 122, seal member 123
And separator 163 and cover installing component shown in Fig. 4 162,162 constitute top and storage set on cylinder body 35 shown in Fig. 2
Deposit the liquid reserve tank 10 of brake fluid.Therefore, liquid reserve tank 10 is integrally connected with the master cylinder 11 for supplying brake fluid to wheel cylinder 59.By making
Master cylinder 11 is configured at the position that traveling wind is directly blown onto the car, so that outside and lid of the liquid reserve tank 10 in liquid reserve tank wall portion 36
Bear the flowing of the atmosphere in vehicle driving in the outside in portion 161.
As shown in figure 5, forming the oriented direction vertical with frame-shaped face 227 in the frame-shaped face 227 of cover 161 and being recessed
Two paths slot 235,236.Path groove 235,236 is formed in casting.Note that path groove 235,236 can also be by cutting
Processing is cut to be formed.
Path groove 235 is made of groove portion 241~247.Groove portion 241 the central location of the left and right directions than cover 161 slightly
Position by 193 side of side edge part is formed from the end of 212 side of protrusion wall portion of face 222 to the middle position of 202 side of protruding portion.
Groove portion 241 has the linear shape orthogonal with the extending direction of face 222.Groove portion 242 face 222 in the front-back direction
Middle position extends to face to facial 225 sides along the extending direction of face 222 from the end of 202 side of protruding portion of groove portion 241
The position in front of insertion hole 198 in 225.Identical as face 222, groove portion 242 has linear shape.
Groove portion 243 from the end of 225 side of face of groove portion 242 face 225 insertion hole 198 and protruding portion 205 it
Between pass through and extend to face 225 in 223 side of face.Prolong with face 222 the part of groove portion 243 being connected with groove portion 242
Stretch that direction is vertical, the part of the side opposite with groove portion 242 of groove portion 243 along face 222 extending direction, between them
Part with insertion hole 198 in a manner of same heart shaped to be bent.Groove portion 244 is in the middle position of the left and right directions of face 223 from slot
The end of the side opposite with groove portion 242 in portion 243 extends to face 224 along the extending direction of face 223.With facial 223 phases
Together, groove portion 244 has the shape of arc-shaped.
Groove portion 245 is in the middle position in the front-back direction of face 224 from the side opposite with groove portion 243 of groove portion 244
End extends to the central location than the left and right directions of cover 161 slightly by the position of 193 side of side edge part along the extending direction of face 224
It sets.Identical as face 224, groove portion 245 has linear shape.With groove portion 244 opposite one of the groove portion 246 from groove portion 245
The end of side is extended in the mode vertical with the extending direction of face 224 to 204 side of protruding portion, crosses the protruding portion of face 224
The end position of 204 sides penetrates through protruding portion 204 along the longitudinal direction.Groove portion 246 and groove portion 241 are configured to same linear.Groove portion
241~246 groove bottoms that top surface is become when vehicle-mounted are configured at same plane, and are formed as one relative to frame-shaped face 227
Fixed depth.
Groove portion 247 is formed as, from the end position of the side opposite with groove portion 242 of groove portion 241, with prominent wall portion
212 inner end wall surface is recessed compared to more to the direction opposite with protruding portion 202.As shown in figure 3, the groove portion 247 with groove portion 241
The end of opposite side is formed to the protrusion front face open of prominent wall portion 212, the end of 241 side of groove portion of the groove portion 247
To the position of the groove bottom for the groove portion 241 being further recessed compared with face 222.
Path groove 235 is from groove portion 241 via groove portion 242, groove portion shown in fig. 5 243~245 to groove portion 246 shown in Fig. 3
The part of 245 side of groove portion closed by the frame-shaped plate portion 177 of separator 163.Path groove 235 is formed between separator 163
Atmosphere road 251.The atmosphere road 251 utilizes the interior end edge portion by groove portion 246 and the loading plate portion 174 of separator 163
The inner opening portion 252 of formation is connected to gas chamber 232.
In addition, atmosphere road 251 is using the external opening portion (opening portion) 253 of the lower end of groove portion 247 to as liquid storage
Gap 230 between the outside of case 10, cover 161 protrusion wall portion 212 and the upper surface 152 of liquid reserve tank wall portion 36 is open.
Also that is, atmosphere road 251 is formed in cover 161, as shown in Figure 1, atmosphere connects according to the shape of path groove 235
Access 251 has the external opening portion 253 to external opening and in storage room 38 (referring to Fig. 2, figure in the direction of advance side of vehicle
3) pass through around, connect in the inner opening portion 252 and gas chamber 232 (referring to Fig. 2, Fig. 3) for deviateing 253 position of external opening portion
It is logical.Atmosphere road 251 is bent groove portion 242 relative to groove portion 241, is bent groove portion 243 relative to groove portion 242, makes groove portion
243 bending, make groove portion 244 relative to groove portion 243 be bent, make groove portion 245 relative to groove portion 244 be bent, make groove portion 246 relative to
Groove portion 245 is bent, to become maze configuration.
As shown in figure 5, path groove 236 is made of groove portion 261~267.Groove portion 261 is in the left and right directions than cover 161
Central location is formed from the end of 212 side of protrusion wall portion of face 222 to 202 side of protruding portion slightly by the position of 191 side of side edge part
Middle position.Groove portion 261 has the linear shape orthogonal with the extending direction of face 222.Groove portion 262 is in face 222
Extending direction of the middle position in the front-back direction from the end of 202 side of protruding portion of groove portion 261 along face 222 extend to face
221.Identical as face 222, groove portion 262 has linear shape.Groove portion 262 and groove portion 242 are configured on same straight line.
Groove portion 263 is in the middle position of the left and right directions of face 221 from the end of 221 side of face of groove portion 262 along face
221 extending direction extends to the position in front of the insertion hole 199 in face 226 to facial 226 sides.With facial 221 identical, slots
Portion 263 has the shape of arc-shaped.Groove portion 264 is from the end of 226 side of face of groove portion 263 in the insertion hole 199 of face 226
Pass through between protruding portion 206 and extends to 224 side of face in face 226.The part of groove portion 264 being connected with groove portion 263
Along the extending direction of face 224, the part of the side opposite with groove portion 263 of groove portion 264 is hung down with the extending direction of face 224
Directly, the part between them is in concentrically to be bent with insertion hole 199.
Groove portion 265 is in the middle position in the front-back direction of face 224 from the side opposite with groove portion 263 of groove portion 264
End extends to the central location than the left and right directions of cover 161 slightly by the position of 191 side of side edge part along the extending direction of face 224
It sets.Identical as face 224, groove portion 265 has linear shape.Groove portion 265 and groove portion 245 are configured on same straight line.Slot
Portion 266 is from the end of the side opposite with groove portion 264 of groove portion 265 in the mode vertical with the extending direction of face 224 to prominent
204 side of portion extends out, crosses the end position of 204 side of protruding portion of face 224, penetrates through protruding portion 204 along the longitudinal direction.Groove portion
266 be configured to groove portion 261 it is same linear.The groove bottom that groove portion 261~266 becomes top surface when vehicle-mounted is configured at same
Plane, and be formed as certain depth relative to frame-shaped face 227.
Groove portion 267 is formed as, from the end position of the side opposite with groove portion 262 of groove portion 261, with prominent wall portion
212 inner end wall surface is recessed compared to more to the direction opposite with protruding portion 202.The side opposite with groove portion 261 of the groove portion 267
End to the protrusion front face open of prominent wall portion 212, the end of 261 side of groove portion formed to face 222 compared with more into one
Walk the position of the groove bottom of the groove portion 261 of recess.Here, under above-mentioned installation condition, 177 bullet of frame-shaped plate portion of separator 163
Property deformation, outer peripheral surface contacts with whole inner peripheral walls in addition to groove portion 247,267 of frame-shaped wall portion 215.
Path groove 236 is from groove portion 261 via the part of 265 side of groove portion of groove portion 262~265 to groove portion 266 by separator
It closes in 163 frame-shaped plate portion 177.Path groove 236 forms atmosphere road 271 between separator 163.The atmosphere road
The 271 inner opening portions 272 and Fig. 3 institute formed using the interior end edge portion by groove portion 266 and the loading plate portion 174 of separator 163
The gas chamber 232 shown is connected to.In addition, external opening portion (opening of the atmosphere road 271 shown in fig. 5 using the lower end of groove portion 267
Portion) it 273 is open to the gap 230 of prominent wall portion 212 shown in Fig. 3 and liquid reserve tank wall portion 36.
Also that is, atmosphere road 271 is formed in cover 161.As shown in Figure 1, atmosphere connects according to the shape of path groove 236
Access 271 has the external opening portion 273 to external opening and in storage room 38 (referring to Fig. 2, figure in the direction of advance side of vehicle
3) pass through around, connect in the inner opening portion 272 and gas chamber 232 (referring to Fig. 2, Fig. 3) for deviateing the position in external opening portion 273
It is logical.Atmosphere road 271 is bent groove portion 262 relative to groove portion 261, is bent groove portion 263 relative to groove portion 262, makes groove portion
264 relative to groove portion 263 be bent, make groove portion 264 be bent, make groove portion 265 relative to groove portion 264 be bent, make groove portion 266 relative to
Groove portion 265 is bent, to become maze configuration.
Master cylinder 11 makes gas chamber 232 shown in Fig. 2 be maintained essentially at atmospheric pressure using atmosphere road 251,271.As a result,
Even if brake friction material reduces and increases the volume of the hydraulic pressure chamber of 59 side of wheel cylinder, thus from the liquid chamber 231 of storage room 38
The supply that brake fluid is carried out to hydraulic pressure chamber 101, can also make to maintain atmospheric pressure in liquid chamber 231.
The master cylinder that above patent document 1 is recorded is the construction for being separated the inside of storage bin up and down using separator, is used for
The side facing external of left and right of the access for being connected to the room more upper than separator with outside air in liquid reserve tank is open.Traveling
Wind is flowed along the side of the left and right of master cylinder from front direction rear.Access relative to the traveling wind flowing vertically.Cause
This, it is possible to the Venturi effect caused by the flowing of the atmosphere in vehicle driving due to, makes the opening portion of access become negative
Pressure.Therefore, if there is the case where brake fluid is for example impregnated with etc. into separator year in year out and reaches gas chamber side from liquid chamber side,
Then the brake fluid is possible to be sucked out from opening portion and leaked out to outside by the flowing of the atmosphere in vehicle driving.In addition, though
Other separator plate can be set to inhibit the brake fluid of gas chamber to external leakage, but in this case, will lead to component
Quantity increase, increased costs.
In contrast, in the master cylinder 11 for including above-mentioned liquid reserve tank 10, the atmosphere for being connected to gas chamber 232 with outside air connects
Access 251,271 the direction of advance side (weather side of traveling wind) of vehicle have to external opening external opening portion 253,
273 and pass through around storage room 38, after deviateing the rear side of storage room 38 in external opening portion 253,273, i.e. vehicle
The inner opening portion 252,272 for moving back direction side is connected to gas chamber 232.Even if depositing the flowing of atmosphere in vehicle traveling as a result,
External opening portion 253,273 is also difficult to become negative pressure.Therefore, even if there are brake fluid in 232 side of gas chamber, also it is able to suppress the system
Hydrodynamic is sucked out by the flowing of the atmosphere in vehicle driving from external opening portion 253,273.Therefore, even if being not provided with separator plate,
Also it can reduce a possibility that brake fluid is leaked out to outside.In addition, since traveling wind from external opening portion 253,273 imported into gas
In room 232, therefore separator 163 is improved to the tracing ability of brake-fluid level, and brake fluid is improved to the supply performance of wheel cylinder 59.
In addition, since external opening portion 253,273 is in 212 downwardly facing opening of protrusion wall portion of leading edge potion 192, main board portion
190 leading edge potion 192 becomes occlusion part, and rainwater and foreign matter etc. is inhibited to enter into atmosphere road 251,271.As a result, energy
Enough rainwater and foreign matter etc. is inhibited to enter to gas chamber 232.
Atmosphere road 251 becomes groove portion 242 relative to the bending of groove portion 241, groove portion 243 relative to the bending of groove portion 242, slot
The bending of portion 243, groove portion 244 are bent relative to groove portion 243, groove portion 245 is bent relative to groove portion 244, groove portion 246 is relative to groove portion
245 curved maze configurations.In addition, atmosphere road 271 becomes groove portion 262 relative to the bending of groove portion 261,263 phase of groove portion
The bending of groove portion 262, groove portion 264 are bent relative to groove portion 263, groove portion 264 is bent, groove portion 265 is curved relative to groove portion 264
Bent, groove portion 266 is relative to the curved maze configuration of groove portion 265.Therefore, atmosphere road 251,271 is using due to traveling wind
Each bending part of the dynamic pressure (so-called RAM pressure) of generation makes the pressure loss become larger, and is able to suppress traveling wind to hydraulic rising
It influences.
Here, the dynamic pressure P generated by traveling wind can be found out by following formula.
P=1/2 × ρ × V2
If making density p ρ=1.2kg/m of air3, V be volume, wheel cylinder 59 work minimum hydraulic pressure be 0.05MPa, then
Even if computationally and from the travel speed of vehicle being in the case where the maze configuration bring pressure loss is not present
350km/h or so starts to affect to wheel cylinder 59, and if there is maze configuration, it will be able to further suppress traveling wind band
The influence come.
In the 1st above embodiment, groove portion 242 shown in fig. 5 can also be utilized between them with groove portion 262
The groove portion for configuring addition on the same line with them links, and is connected to atmosphere road 251,271.It can also be basic herein
It is upper or groove portion 245 and groove portion 265 individually can also be utilized between them with their configurations chasing after on the same line
The groove portion connection added, is connected to atmosphere road 251,271.
<the 2nd embodiment>
Next, being based primarily upon Fig. 6, the 2nd embodiment is said centered on the part different from the 1st embodiment
It is bright.Note that will be indicated using identical title, identical appended drawing reference for position identical with the 1st embodiment.
In the 2nd embodiment, Fig. 6 that partial structurtes are different for the cover 161 of the 1st embodiment has been used
Shown in cover 161A.On cover 161A, it is formed with different from the path groove 235,236 of the 1st embodiment part logical
Road slot 235A, 236A.Path groove 235A, 236A is also to be formed in casting.In Fig. 6, relative to lid indicated by the solid line
Portion 161A indicates the frame-shaped plate portion 177 of separator 163 with double dot dash line.
In path groove 235A, it is formed with groove portion 241~243,247 identical with the 1st embodiment.In path groove 235A
In, the groove portion 246 of the 1st embodiment is not formed, but forms groove portion 244A, 245A different from the 1st embodiment.
Groove portion 244A is from the end of the side opposite with groove portion 242 of groove portion 243 along face 223 in face 225
The mode of extending direction extend to the specified positions of facial 223 sides.Groove portion 244A is along the side vertical with prominent wall portion 212
To it is linear.Groove portion 245A is from the end of the side opposite with groove portion 243 of groove portion 244A to opposite with prominent wall portion 213
Direction extends, and penetrates through protruding portion 205 in left-right direction.Groove portion 241~243,244A, 245A become top surface when vehicle-mounted
Groove bottom is configured at same plane, and is formed as certain depth from frame-shaped face 227.
The groove portion 241~243 of path groove 235A, the side groove portion 244A of groove portion 244A and groove portion 245A part by with the 1st
The identical separator 163 of embodiment is closed.Path groove 235A forms atmosphere road 251A between separator 163.It should
Atmosphere road 251A utilizes the inner opening formed by the interior end edge portion of groove portion 245A and the loading plate portion 175 of separator 163
Portion 252A is connected to gas chamber 232, and using groove portion 247 the side opposite with groove portion 241 end external opening portion 253 to
The external opening of liquid reserve tank 10.Also that is, atmosphere road 251A is formed in cover 161A, according to the shape of path groove 235A, greatly
Gas access 251A is in the direction of advance side of vehicle with to the external opening portion 253 of external opening and around storage room 38
Pass through, connects in the inner opening portion 252A and gas chamber 232 for deviateing position, that is, vehicle side surface direction side in external opening portion 253
It is logical.Atmosphere road 251A is that groove portion 242 is bent relative to groove portion 241, groove portion 243 is bent relative to groove portion 242, groove portion 243
Bending, groove portion 244A are bent relative to groove portion 243, groove portion 245A is relative to the curved maze configuration of groove portion 244A.
In path groove 236A, it is formed with groove portion 261,262,267 identical with the 1st embodiment.In path groove 236A
In, do not form the groove portion 265,266 of the 1st embodiment, but form the groove portion 263A different from the 1st embodiment,
264A。
Groove portion 263A is in the middle position of the left and right directions of face 221 from the side opposite with groove portion 261 of groove portion 262
End extends along the extending direction of face 221 to facial 226 sides.Identical as face 221, groove portion 263A has the shape of arc-shaped
Shape.Groove portion 264A prolongs from the end of the side opposite with groove portion 262 of groove portion 263A to the direction opposite with prominent wall portion 211
It stretches, and penetrates through protruding portion 206 in left-right direction.Groove portion 261,262,263A, 264A become the groove bottom of top surface when vehicle-mounted
It is configured at same plane, and is formed as certain depth from frame-shaped face 227.
The groove portion 261 of path groove 236A, the side groove portion 263A of 262, groove portion 263A and groove portion 264A part by with it is the 1st real
The identical separator 163 of mode is applied to close.Path groove 236A forms atmosphere road 271A between separator 163.This is big
Gas access 271A utilizes the inner opening portion formed by the interior end edge portion of groove portion 264A and the loading plate portion 176 of separator 163
272A is connected to gas chamber 232, and using the external opening portion 273 of the side opposite with groove portion 261 of groove portion 267 to liquid reserve tank 10
External opening.Also that is, atmosphere road 271A is formed in cover 161A, according to the shape of path groove 236A, atmosphere road
271A has the external opening portion 273 to external opening in the direction of advance side of vehicle and passes through around storage room 38,
The inner opening portion 272A for deviateing position, that is, vehicle side surface direction side in external opening portion 273 is connected to gas chamber 232.Atmosphere connects
Access 271A is that groove portion 262 is bent relative to the bending of groove portion 261, groove portion 263A relative to groove portion 262, groove portion 264A is relative to slot
The curved maze configuration of portion 263A.
According to such 2nd embodiment, compared to the 1st embodiment, the labyrinth type structure of atmosphere road 251A, 271A
Making becomes more simple, and therefore, the production of path groove 235A, 236A becomes easy, and can reduce manufacturing cost.
<the 3rd embodiment>
Next, being based primarily upon Fig. 7, the 3rd embodiment is said centered on the part different from the 1st embodiment
It is bright.Note that will be indicated using identical title, identical appended drawing reference for position identical with the 1st embodiment.
In the 3rd embodiment, Fig. 7 that partial structurtes are different for the cover 161 of the 1st embodiment has been used
Shown in cover 161B.In cover 161B, it is formed with different from the path groove 235,236 of the 1st embodiment part logical
Road slot 235B, 236B.Path groove 235B, 236B is also to be formed in casting.In Fig. 7, relative to lid indicated by the solid line
Portion 161B indicates the frame-shaped plate portion 177 of separator 163 with double dot dash line.
In path groove 235B, it is formed with groove portion 241,242,247 identical with the 1st embodiment.In path groove 235B
In, the groove portion 244~246 of the 1st embodiment is not formed, but forms the groove portion 243B different from the 1st embodiment.Slot
Portion 243B extends from the end of the side opposite with groove portion 241 of groove portion 242 to the direction opposite with prominent wall portion 212, and edge
Front-rear direction penetrates through protruding portion 205.Groove portion 241,242,243B become when vehicle-mounted top surface groove bottom be configured at it is same flat
Face, and be formed as certain depth from frame-shaped face 227.
The part of 242 side of groove portion of the groove portion 241,242 and groove portion 243B of path groove 235B is by identical as the 1st embodiment
Separator 163 close.Path groove 235B forms atmosphere road 251B between separator 163.The atmosphere road
251B utilizes the inner opening portion 252B and gas formed by the interior end edge portion of groove portion 243B and the loading plate portion 175 of separator 163
Room 232 is connected to, and is opened using the external opening portion 253 of the side opposite with groove portion 241 of groove portion 247 to the outside of liquid reserve tank 10
Mouthful.Also that is, atmosphere road 251B is formed in cover 161B, according to the shape of path groove 235B, atmosphere road 251B is in vehicle
Direction of advance side have to external opening external opening portion 253 and pass through around storage room 38, outside deviation
The inner opening portion 252B of position, that is, vehicle direction of advance side of opening portion 253 is connected to gas chamber 232.Atmosphere road 251B
For groove portion 242 relative to the bending of groove portion 241, groove portion 243B relative to the curved maze configuration of groove portion 242.
In path groove 236B, it is formed with groove portion 261,267 identical with the 1st embodiment.In path groove 236B, do not have
Have to form the groove portion 264~266 of the 1st embodiment, but forms groove portion 262B, 263B different from the 1st embodiment.
Groove portion 262B is in the middle position in the front-back direction of face 222 from the end of 202 side of protruding portion of groove portion 261 along face
The extending direction in portion 222 extends to the front of face 221 to facial 221 sides.Identical as face 222, groove portion 262B has straight line
The shape of shape.Groove portion 262B and groove portion 242 are configured on same straight line.Groove portion 263B is from the opposite with groove portion 261 of groove portion 262B
The end of side extend to the direction opposite with prominent wall portion 212, and penetrate through protruding portion 202 along the longitudinal direction.Groove portion 261,
The groove bottom that 262B, 263B become top surface when vehicle-mounted is configured at same plane, and is formed as certain from frame-shaped face 227
Depth.
The groove portion 261 of path groove 236B, the side groove portion 262B of 262B and groove portion 263B part by with the 1st embodiment phase
Same separator 163 is closed.Path groove 236B forms atmosphere road 271B between separator 163.The atmosphere road
271B utilizes the inner opening portion 272B and gas formed by the interior end edge portion of groove portion 263B and the loading plate portion 172 of separator 163
Room 232 is connected to, and using the external opening portion 273 of the end of the side opposite with groove portion 261 of groove portion 267 to liquid reserve tank 10
External opening.Also that is, atmosphere road 271B is formed in cover 161B, according to the shape of path groove 236B, atmosphere road
271B has the external opening portion 273 to external opening in the direction of advance side of vehicle and passes through around storage room 38,
The inner opening portion 272B for deviateing position, that is, vehicle direction of advance side in external opening portion 273 is connected to gas chamber 232.Atmosphere connects
Access 271B is that groove portion 262B is bent relative to groove portion 261, groove portion 263B is relative to the curved maze configuration of groove portion 262B.
According to such 3rd embodiment, needless to say compared to the 1st embodiment, even compared to the 2nd embodiment party
Formula, the maze configuration of atmosphere road 251B, 271B also become more simple.Therefore, the production of path groove 235B, 236B becomes
It must be easy, can reduce manufacturing cost.
<the 4th embodiment>
Illustrate the 4th embodiment based on Fig. 8.As shown in figure 8, liquid reserve tank wall portion of the 4th embodiment in main element 321
336 frame-shaped end face 357 is formed with the path groove 335 as atmosphere road.In detail, the one end of path groove 335 is set
It is connected in frame-shaped end face 357 and with groove portion 341, there is groove portion 341 outside being open in the direction of advance laterally outside of vehicle to open
Oral area 353.On the other hand, the another side of path groove 335 is from the groove portion 365 of a part for becoming path groove 335 via separation
The intercommunicating pore 301 formed in the frame-shaped plate portion 377 of part 363 is connected to the groove portion 246 for the cover 361 being open to gas chamber 232.This
Sample using the groove portion 341 and path groove 335 for being formed in liquid reserve tank wall portion 336, is formed in separator in the 4th embodiment
363 intercommunicating pore 301 and the groove portion 246 of cover 361 constitute atmosphere road.By this structure, in the 4th embodiment
In, even if there are brake fluid in 232 side of gas chamber, the brake fluid is also able to suppress by the flowing of the atmosphere in vehicle driving from outside
Opening portion 353 is sucked out.Therefore, even if being not provided with separator plate, it also can reduce a possibility that brake fluid is leaked out to outside.
More than, in the 1st embodiment, shows and connected by forming path groove 235,236 in cover 161 to form atmosphere
The case where access 251,271.In the 2nd embodiment, show by forming path groove 235A, 236A in cover 161A come shape
The case where at atmosphere road 251A, 271A.In the 3rd embodiment, show by forming path groove in cover 161B
235B, 236B are come the case where forming atmosphere road 251B, 271B.It, can also be in the frame-shaped of liquid reserve tank wall portion 36 for them
The path groove of same shape is formed on end face 157 and atmosphere road is formed between separator.
The external opening portion on atmosphere road can be configured at arbitrary position, as long as the direction of advance side of vehicle is
Can, in addition, the quantity in the external opening portion of gas access can also arbitrarily be set.The inner opening portion on atmosphere road can match
It is placed in arbitrary position, as long as deviateing the position in external opening portion, in addition, the number in the inner opening portion on atmosphere road
Amount also can arbitrarily be set.
The present invention can also apply to liquid reserve tank seperated with master cylinder and that master cylinder is connected to via piping.
Note that cover 161,161A, 161B use the metal component such as cast iron in the above-described embodiment, but can also
To use the resin components such as plastics, rubber.In addition, although cover 161,161A, 161B are by integrally formed made of casting
Product, but can also be formed by sintering etc..
Above embodiment is a kind of master cylinder, which includes cylinder body, the work promoted by the operation of brake bar
Plug is slidingly disposed at the cylinder body；Liquid reserve tank stores brake fluid set on the top of the cylinder body；The liquid reserve tank includes liquid storage tank wall
Portion surrounds the storage room for storing the brake fluid and is formed and the flowing of the atmosphere in vehicle driving is born in upper opening, outside；
Cover covers the opening of the liquid reserve tank wall portion；The storage room is divided into liquid chamber and gas chamber by separator.In the cover or
The liquid reserve tank wall portion is equipped with atmosphere road, which has opening to external opening in the direction of advance side of vehicle
Oral area passes through around the storage room and is connected in the position for deviateing the opening portion with the gas chamber.
In addition, above embodiment is a kind of liquid reserve tank, which connect with to the master cylinder of wheel cylinder supply brake fluid
And store the brake fluid.The liquid reserve tank includes liquid reserve tank wall portion, surround the storage room for storing the brake fluid and formed and on
The flowing of the atmosphere in vehicle driving is born in portion's opening, outside；Cover covers the opening of the liquid reserve tank wall portion；Separator, by institute
It states storage room and is divided into liquid chamber and gas chamber.Atmosphere road, the atmosphere are equipped in the cover or the liquid reserve tank wall portion
Road has in the direction of advance side of vehicle to the opening portion of external opening, passes through around the storage room and described in the deviation
The position of opening portion is connected to the gas chamber.
The atmosphere road is formed deviously between the cover and the liquid reserve tank wall portion.In addition, the atmosphere
Access is connected in the direction of retreat side of vehicle with the gas chamber.In addition, the atmosphere road is in the side surface direction side of vehicle
It is connected to the gas chamber.In addition, the atmosphere road is connected in the direction of advance side of vehicle with the gas chamber.
As described above, atmosphere road is arranged in cover or liquid reserve tank wall portion, the atmosphere road is in the advance side of vehicle
Have to side and pass through around storage room to the opening portion of external opening and be connected in the position for deviateing opening portion with gas chamber,
Even if there is the flowing of the atmosphere in vehicle driving to effect, opening portion is also difficult to become negative pressure.Therefore, even if being deposited in gas chamber side
In brake fluid, also it is able to suppress the brake fluid and is sucked out by the flowing of the atmosphere in vehicle driving from opening portion.
Industrial applicibility
It can provide the master cylinder and liquid reserve tank of a kind of leakage for being able to suppress brake fluid.
Description of symbols
10 liquid reserve tanks
11 master cylinders
24 brake bars
35 cylinder bodies
38 storage rooms
36 liquid reserve tank wall portions
59 wheel cylinders
76 pistons
161,161A, 161B cover
163 separators
231 liquid chambers
232 gas chambers
251,251A, 251B, 271,271A, 271B atmosphere road
253,273 external opening portion (opening portion)
Claims (10)
1. a kind of master cylinder comprising:
Cylinder body is slidingly disposed at the cylinder body by the piston that the operation of brake bar is promoted；
Liquid reserve tank stores brake fluid set on the top of the cylinder body；
The liquid reserve tank includes
Liquid reserve tank wall portion is surrounded the storage room for storing the brake fluid and is formed and upper opening, outside are born in vehicle driving
Atmosphere flowing；
Cover covers the opening of the liquid reserve tank wall portion；
The storage room is divided into liquid chamber and gas chamber by separator；
It is equipped with atmosphere road in the cover or the liquid reserve tank wall portion, which has in the direction of advance side of vehicle
The opening portion of oriented external opening passes through around the storage room and in the position for deviateing the opening portion and the gas chamber
Connection.
2. master cylinder according to claim 1, which is characterized in that the atmosphere road is in the cover and the liquid reserve tank
It is formed deviously between wall portion.
3. master cylinder according to claim 1 or 2, which is characterized in that the atmosphere road is in the direction of retreat side of vehicle
It is connected to the gas chamber.
4. master cylinder according to claim 1 or 2, which is characterized in that the atmosphere road is in the side surface direction side of vehicle
It is connected to the gas chamber.
5. master cylinder according to claim 2, which is characterized in that direction of advance side and institute of the atmosphere road in vehicle
State gas chamber connection.
6. a kind of liquid reserve tank, which connect with the master cylinder for supplying brake fluid to wheel cylinder and stores the brake fluid, feature
It is, comprising:
Liquid reserve tank wall portion is surrounded the storage room for storing the brake fluid and is formed and upper opening, outside are born in vehicle driving
Atmosphere flowing；
Cover covers the opening of the liquid reserve tank wall portion；
The storage room is divided into liquid chamber and gas chamber by separator；
It is equipped with atmosphere road in the cover or the liquid reserve tank wall portion, which has in the direction of advance side of vehicle
The opening portion of oriented external opening passes through around the storage room and in the position for deviateing the opening portion and the gas chamber
Connection.
7. liquid reserve tank according to claim 6, which is characterized in that the atmosphere road is in the cover and the liquid storage
Tank wall is formed deviously between portion.
8. liquid reserve tank according to claim 6 or 7, which is characterized in that direction of retreat of the atmosphere road in vehicle
Side is connected to the gas chamber.
9. liquid reserve tank according to claim 6 or 7, which is characterized in that side surface direction of the atmosphere road in vehicle
Side is connected to the gas chamber.
10. liquid reserve tank according to claim 7, which is characterized in that the atmosphere road is in the direction of advance side of vehicle
It is connected to the gas chamber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-228332 | 2013-11-01 | ||
| JP2013228332 | 2013-11-01 | ||
| PCT/JP2014/078785 WO2015064647A1 (en) | 2013-11-01 | 2014-10-29 | Master cylinder, and reservoir |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106103220A CN106103220A (en) | 2016-11-09 |
| CN106103220B true CN106103220B (en) | 2019-01-04 |
Family
ID=53004247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480058581.2A Expired - Fee Related CN106103220B (en) | 2013-11-01 | 2014-10-29 | Master cylinder and liquid reserve tank |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6086991B2 (en) |
| CN (1) | CN106103220B (en) |
| TW (1) | TWI632080B (en) |
| WO (1) | WO2015064647A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112020023053A2 (en) * | 2018-06-07 | 2021-02-02 | Honda Motor Co., Ltd. | type vehicle to assemble |
| IT201900023994A1 (en) * | 2019-12-13 | 2021-06-13 | Campagnolo Srl | Hydraulic tank for bicycle |
| IT201900023988A1 (en) * | 2019-12-13 | 2021-06-13 | Campagnolo Srl | Hydraulic tank for bicycle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1454170A (en) * | 2000-09-29 | 2003-11-05 | 福乐尼·乐姆宝公开有限公司 | An hydraulic actuator for vehicles controllable by handlebars |
| DE102010001216A1 (en) * | 2009-09-16 | 2011-03-24 | Continental Teves Ag & Co. Ohg | Container, in particular for hydraulic vehicle brake systems |
| JP2012153330A (en) * | 2011-01-28 | 2012-08-16 | Nissin Kogyo Co Ltd | Reservoir tank |
| CN103029699A (en) * | 2011-10-07 | 2013-04-10 | 株式会社万都 | Apparatus for opening and closing reservoir |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845970Y2 (en) * | 1979-11-20 | 1983-10-19 | 日信工業株式会社 | reservoir tank |
| JPS6022463U (en) * | 1983-07-25 | 1985-02-15 | 日信工業株式会社 | master cylinder |
| JP2557540Y2 (en) * | 1992-11-11 | 1997-12-10 | 曙ブレーキ工業株式会社 | Liquid sealing structure of reservoir tank for master cylinder |
-
2014
- 2014-10-20 TW TW103136154A patent/TWI632080B/en not_active IP Right Cessation
- 2014-10-29 CN CN201480058581.2A patent/CN106103220B/en not_active Expired - Fee Related
- 2014-10-29 JP JP2015545274A patent/JP6086991B2/en active Active
- 2014-10-29 WO PCT/JP2014/078785 patent/WO2015064647A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1454170A (en) * | 2000-09-29 | 2003-11-05 | 福乐尼·乐姆宝公开有限公司 | An hydraulic actuator for vehicles controllable by handlebars |
| DE102010001216A1 (en) * | 2009-09-16 | 2011-03-24 | Continental Teves Ag & Co. Ohg | Container, in particular for hydraulic vehicle brake systems |
| JP2012153330A (en) * | 2011-01-28 | 2012-08-16 | Nissin Kogyo Co Ltd | Reservoir tank |
| CN103029699A (en) * | 2011-10-07 | 2013-04-10 | 株式会社万都 | Apparatus for opening and closing reservoir |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015064647A1 (en) | 2015-05-07 |
| JPWO2015064647A1 (en) | 2017-03-09 |
| JP6086991B2 (en) | 2017-03-01 |
| CN106103220A (en) | 2016-11-09 |
| TWI632080B (en) | 2018-08-11 |
| TW201536608A (en) | 2015-10-01 |
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| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20190104 Termination date: 20201029 |