CN103419880A - Hydraulic brake master cylinder - Google Patents
Hydraulic brake master cylinder Download PDFInfo
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- CN103419880A CN103419880A CN2013103882752A CN201310388275A CN103419880A CN 103419880 A CN103419880 A CN 103419880A CN 2013103882752 A CN2013103882752 A CN 2013103882752A CN 201310388275 A CN201310388275 A CN 201310388275A CN 103419880 A CN103419880 A CN 103419880A
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- hydraulic brake
- brake master
- main body
- governor
- bushing
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- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The invention discloses a hydraulic brake master cylinder. The hydraulic brake master cylinder is characterized in that components of the hydraulic brake master cylinder comprise a main body arranged on a bicycle handlebar through a clamp and fixed bolts, wherein the main body is provided with a bladder fixed through a container cover and container cover bolts and a control rod for pivotal connection through pivot pins and fixed bolts. The hydraulic brake master cylinder has the beneficial effects of compact structure and light weight, the comfortable control rod can be adjusted and used without tools, and the air discharge process is improved by utilizing low-cost air discharge bolts without the master cylinder at a locating position, so that the hydraulic brake master cylinder is convenient and practical.
Description
Technical field
The present invention relates to a kind of common brake equipment, particularly a kind of hydraulic brake master.
Background technology
The generality operation of the hydraulic brake master of bicycle or cross-country car is well-known.Brake system comprises the hydraulic fluid of holder housing.Brake system, by the rotation of a control stalk, applies power to piston and is operated.When applying power, piston slides in longitudinal hole, thereby increases hydraulic pressure in hole, to brake system, pressurizes.One or more liquid paths are connecting piston bore and holder.The bladder that can expand and shrink that holder has comprised the needs based on this system.Therefore during in its free state, be also referred to as the position of " initial " when bar, its from handlebar apart from normally adjustable.Be difficult to use current relay, serviceable tool usually can not adjust bar, as hex spanner.If develop the less and lighter assembly of weight in bicycle industry.The size reduced, the weight of number of parts and bicycle assembly, comprise brake system, this is very favorable.Meanwhile, reduce the size of master cylinder, particularly in the zone of speed-changing braking, provide the regioselective of the position of the more heterogeneous shifter bar for master cylinder lever, this is also favourable.In addition, how can from hydraulic efficiency pressure system, remove the concern that the problems such as air also have been subject to more people.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic brake master through improvement, in order to solve above-mentioned existing issue.
Technical scheme of the present invention is as follows: a kind of hydraulic brake master is characterized in that: include one on the assembly of hydraulic brake master and be arranged on the main body in bicycle handle bar by clip and bolt of rear end plate; But the bladder that is fixed with the container cover screw by container cover is arranged on main body and carry out with fix screw the control stalk that pivotable is connected by pivot pin.
Pivot pin is rotated with respect to main body on the pivot pin lining, on the pivot pin lining, flange is arranged.
On control stalk, have by the push rod of the device pivotable connection of setting nut, governor bushing, spring washer, an end of push rod is spheroid, and it can be embedded in the spherical pocket of piston, and plane is arranged on push rod, and plane is correspondingly also arranged on governor bushing.
In the groove of main body, steady ring can be installed, it can fix packing ring.
The outside of governor bushing is cylindrical, and it matches with the cylindrical pocket in control stalk.
Have on setting nut on each end coaxial with threaded portion and comprise cylindrical projections, the pocket of this projection in governor bushing supported.
Governor bushing includes the pocket of accepting spring two, and spring two can prevent the surface fracture of cylindrical projections, and also has plane on governor bushing.
One elastomeric main sealing member and secondary seal arranged on piston, on an end of piston, spring is installed, the other end of spring is connected to the piston hole bottom on main body, between the bottom of piston hole and main sealing member, piston hole is arranged.
Also be provided with port timing hole and compensation port in main body, at the main body relief port, place also is provided with the bleeder screw of being installed by screw thread, and the nose of bleeder screw is taper.
Also be connected with hold-down nut and nose cone on main body.
The invention has the beneficial effects as follows: compact conformation, lightweight, provide the use that does not need instrument just can be adjusted comfortable control stalk, and do not need master cylinder to relocate locational air bleed screw to improve deflation course by utilizing to be positioned at cheaply, convenient practical again.
The accompanying drawing explanation
Fig. 1 is the decomposition view of master cylinder;
Fig. 2 is the front elevation of master cylinder;
Fig. 3 is the cutaway view along the master cylinder of 3-3 line intercepting in Fig. 2;
Fig. 4 is the back view of master cylinder;
Fig. 5 is the lateral plan of master cylinder;
Fig. 6 is the cutaway view along 6-6 line intercepting in Fig. 5;
Fig. 7 is the details decomposition view of regulating control;
Fig. 8 is the lateral plan of master cylinder;
Fig. 9 is the cutaway view along 9-9 line intercepting in Fig. 8;
Figure 10 is the details area view along 10-10 line intercepting in Fig. 9;
Figure 11 is the birds-eye view of control stalk;
Figure 12 is the cutaway view along Figure 11 center line 12-12 intercepting;
Figure 13 is the cutaway view along 13-13 line intercepting in Figure 12.
In figure, indicate: 100, assembly, 50, main body, 50A, the piston hole bottom, 51, clip, 52, bolt of rear end plate, 53, bladder, 54, container cover, 55, the container cover screw, 56, control stalk, 57, pivot pin, 58, the pivot pin lining, 59, fix screw, 60, setting nut, 60A, cylindrical projections, 61, governor bushing, 61B, pocket, 61C, plane, 62, spring washer, 63A, plane, 63, push rod, 64, steady ring, 65, packing ring, 66, secondary seal, 67, piston, 68, main sealing member, 69, spring, 70, bleeder screw, 71, hold-down nut, 72, nose cone, 73, spring two, 74, flange, 75, cylindrical pocket, 76, piston hole, 77, nose, 78, the compensation port, 79, the port timing hole, wherein P1 and P2 are the point shown in figure, R is the radius shown in figure.
The specific embodiment
By reference to the accompanying drawings, the present invention is sat to further description.
As shown in the figure, hydraulic brake master of the present invention is characterized in that: include one on the assembly 100 of hydraulic brake master and be arranged on the main body 50 in bicycle handle bar by clip 51 and bolt of rear end plate 52; But the bladder 53 that is fixed with container cover screw 55 by container cover 54 is arranged on main body 50 and carry out with fix screw 59 control stalk 56 that pivotable is connected by pivot pin 57.Pivot pin 57 is rotated with respect to main body 50 on pivot pin lining 58, and flange 74 is arranged on pivot pin lining 58.On control stalk 56, have by the push rod 63 of the device pivotable connection of setting nut 60, governor bushing 61, spring washer 62, one end of push rod 63 is spheroid, it can be embedded in the spherical pocket of piston 67, and plane 63A is arranged on push rod 63, and plane is correspondingly also arranged on governor bushing 61.In the groove of main body 50, steady ring 64 can be installed, it can fix packing ring 65.The outside of governor bushing 61 is cylindrical, and it matches with the cylindrical pocket 75 in control stalk 56.Have on setting nut 60 on each end coaxial with threaded portion and comprise cylindrical projections 60A, the pocket 61B of this projection in governor bushing 61 supported.Governor bushing 61 includes the pocket of accepting spring 2 73, and spring 2 73 can prevent the surface fracture of cylindrical projections 60A, and also has plane 61C on governor bushing 61.One elastomeric main sealing member 68 and secondary seal 66 arranged on piston 67, on one end of piston 67, spring 69 is installed, the other end of spring 69 is connected to the piston hole bottom 50A on main body 50, between the bottom 50A of piston hole and main sealing member 68, piston hole 76 is arranged.Also be provided with port timing hole 79 and compensation port 78 in main body 50, in main body, 50 relief port places also are provided with the bleeder screw 70 of being installed by screw thread, and the nose 77 of bleeder screw is taper.Also be connected with hold-down nut 71 and nose cone 72 on main body 50.
As shown in the figure, integral structure of the present invention as described above.Wherein in the space between bladder 53 and main body 50, determined the volume of reservoir liquid, and the allowance for expansion of reservoir has been determined in the space between bladder 53 and container cover 54.Control stalk 56 is pivotably connected on main body 50 by pivot pin 57 and fix screw 59.Pivot pin 57Xiang center neck shape shrinks, and while with box lunch, fix screw 59 being installed, it can not pitch.Pivot pin 57 rotates with respect to main body 50 on pivot pin lining 58.Pivot pin lining 58 respectively has a flange 74, and it is fixed once when pivot pin 57 is installed, and bar 56 can be rotated reposefully.In addition, steady ring 64 is arranged in the groove of main body 50, and retaining washer 65, and it comprises the hole that a diameter is less than the spherical end diameter of push rod 63.Once install, steady ring 64 and packing ring 65 are that push rod 63 is determined end stop.
Adjusting in the mechanism for adaptation fixing spring 2 73 as herein described a selectable embodiment determining increment is that the suitable ball with fixing spring 2 73 is put into to the recess on setting nut 60, fixing spring 2 73 forces suitable ball to enter in the surface interruption on governor bushing 61, and definite increasing amount adjustment is provided.
As shown in Figure 3, piston 67 has an elastomeric main sealing member 68 and secondary seal 66.Mounting spring 69 on an end of piston 67, and the other end is connected to the piston hole bottom 50A on main body 50.The second chamber has been determined in determined the first chamber and the zone between main sealing member 68 and the second sealing member 66 of the volume of the piston hole 76 between the bottom of piston hole 50A and main sealing member 68.Main sealing member 68 allows fluid to flow into the first chamber from the second chamber, but does not allow reverse fluid flow.Secondary seal does not allow any fluid to flow.When trigger bar 56, the carriage of 69 pairs of packing rings 65 of spring and steady ring 64 promotes piston 67 and push rod 63.This is the initial position at piston 67.In this position, one or more port timing holes 79, in main body 50, connect the fluid volume of the first chamber and reservoir.The compensation port 78 that is positioned at main body 50 between the second cavity and reservoir fluid volume runs through whole piston 67 stroke range.Port near the main body 50A of piston hole bottom at the first cavity to the transmission of pressure between brake system.When bar 56 with respect to main body 50 when handlebar rotates, push rod 63 promotes piston 67, Compress Spring 69 towards the bottom of piston hole 50A.Once main sealing member 68 is by port timing hole 79, the pressure transmission produced in the first cavity, to being connected on the brake hose on main body by hold-down nut 71, then covers (as Fig. 3) by nose cone 72.If braking liquid is because the heat produced in braking procedure expands on the initial position of piston 67, fluid will flow through port timing hole 79 and enter in the reservoir fluid volume.Bladder 53 can be deformed into the expanding volume of reservoir, thereby increases the size of reservoir fluid volume.
As shown in Figure 4, near near the reservoir shape handlebar that can see.By package car, near main body 50, the storage chamber of bladder 53 and container cover 54, produced to close package reservoir fluid volume and reservoir allowance for expansion in larger scope.Can see the contour shape of container cover 54 in Fig. 5.Increase concavity by the container cover 54De center to being suitable for the shifter bar operating clearance, produced the allowance for expansion of larger reservoir near the end of container cover 54.
Fig. 6 illustrates the cross section of reservoir.By surpass 180 degree (angle θ) parcel piston hole 75 outsides with the reservoir fluid volumetric region, produced compactly a larger reservoir fluid volume.
Have been found that by test the reservoir allowance for expansion preferably reaches at least 2.5 millimeters, although dispensable.By comprising function as herein described, expansion is greater than 2.5 millimeters and can cause harmful effect to the MLP with respect to hydraulic brake master 100.Certainly, can reach by the ratio that obtains reservoir fluid volume in system and reservoir expanding volume other ideal effect.This ratio preferably is at least 1.8, and this ratio is realized by the present invention.Yet other ratio may be useful, and intend comprising in the present invention.
Can see the installation of concrete bleeder screw 70 at Figure 10.Bleeder screw 70 is arranged on the relief port on main body 50 by screw thread.The nose 77 of bleeder screw is taper, when installing, makes the material generation deformation of the relief port of main body 50, produces a low-pressure fluid sealing member.When observing from the side (bleeder screw 70 as shown in Figure 5), the position of relief port is near the both sides of the main body near handlebar reservoir fluid volume upper piston centerline hole.The venting that this can simplify system greatly, do not need master cylinder 100 is reorientated.Figure 11-13 illustrate the details of the finger contact area of control stalk 56.In Figure 11, the hourglass shape of finger contact area has been described.In a preferred embodiment, near the tip of this shape first-hand abutment narrows down and is about 11.5 millimeters by 13.5 millimeters, then near the inner of finger contact area, increases to approximately 15.5 millimeters.
As shown in figure 12, in a preferred embodiment, the profile of finger contact area near the fillet that an about 8mm is arranged tip and near the inner the fillet of 12.5 millimeters.Length between the tangent line of fillet it is desirable to about 25mm.In a preferred embodiment, the flange at most advanced and sophisticated place is approximately 8.5 millimeters high, thereby improves the comfort level of bar for the user.Figure 13 illustrates radius R, along the girth of finger contact area.This radius from P1 point (Figure 11) approximately 6.5 millimeters reduce at P2(Figure 11) approximately 2.5 millimeters.The user that is shaped as of finger contact area described above has increased comfort level.Yet, tapered shape and numerical value difference to some extent on intensity of variation, this paper has comprised their variation.
Claims (10)
1. a hydraulic brake master is characterized in that:
Include one on the assembly of hydraulic brake master (100) and be arranged on the main body (50) in bicycle handle bar by clip (51) and bolt of rear end plate (52);
On main body (50), have the bladder (53) that is fixed with container cover screw (55) by container cover (54) with by pivot pin (57) with fix screw (59) but carry out the control stalk (56) that pivotable is connected.
2. hydraulic brake master according to claim 1 is characterized in that: pivot pin (57) is rotated with respect to main body (50) pivot pin lining (58) is upper, and flange (74) is arranged on pivot pin lining (58).
3. hydraulic brake master according to claim 1, it is characterized in that: on control stalk (56), have by the push rod (63) of the device pivotable connection of setting nut (60), governor bushing (61), spring washer (62), one end of push rod (63) is spheroid, it can be embedded in the spherical pocket of piston (67), and plane (63A) is arranged on push rod (63), and governor bushing also has plane correspondingly on (61).
4. hydraulic brake master according to claim 1, it is characterized in that: steady ring (64) can be installed in the groove of main body (50), and it can fix packing ring (65).
5. hydraulic brake master according to claim 3, it is characterized in that: the outside of governor bushing (61) is cylindrical, it matches with the cylindrical pocket (75) in control stalk (56).
6. hydraulic brake master according to claim 3, it is characterized in that: have on setting nut (60) on each end coaxial with threaded portion and comprise cylindrical projections (60A), the pocket (61B) of this projection in governor bushing (61) supported.
7. according to the described hydraulic brake master of claim 3 or 5, it is characterized in that: governor bushing (61) includes the pocket of accepting spring two (73), spring two (73) can prevent the surface fracture of cylindrical projections (60A), and the upper plane (61C) in addition of governor bushing (61).
8. hydraulic brake master according to claim 3, it is characterized in that: an elastomeric main sealing member (68) and secondary seal (66) are arranged on piston (67), spring (69) is installed on one end of piston (67), the other end of spring (69) is connected to the piston hole bottom (50A) on main body (50), between the bottom of piston hole (50A) and main sealing member (68), piston hole (76) is arranged.
9. according to the described hydraulic brake master of claim 1 or 4, it is characterized in that: also be provided with port timing hole (79) and compensation port (78) in main body (50), also be provided with the bleeder screw (70) of being installed by screw thread at main body (50) relief port place, the nose of bleeder screw (77) is taper.
10. according to claim 1 or 4 or 9 described hydraulic brake masters, it is characterized in that: also be connected with hold-down nut (71) and nose cone (72) on main body (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103882752A CN103419880A (en) | 2013-08-29 | 2013-08-29 | Hydraulic brake master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103882752A CN103419880A (en) | 2013-08-29 | 2013-08-29 | Hydraulic brake master cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN103419880A true CN103419880A (en) | 2013-12-04 |
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ID=49645376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103882752A Pending CN103419880A (en) | 2013-08-29 | 2013-08-29 | Hydraulic brake master cylinder |
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| Country | Link |
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| CN (1) | CN103419880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035994A (en) * | 2017-10-26 | 2018-05-15 | 广州市腾昶贸易有限公司 | Float type liquid laminated structure for brake clutch system |
-
2013
- 2013-08-29 CN CN2013103882752A patent/CN103419880A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035994A (en) * | 2017-10-26 | 2018-05-15 | 广州市腾昶贸易有限公司 | Float type liquid laminated structure for brake clutch system |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131204 |
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| WD01 | Invention patent application deemed withdrawn after publication |