CN201186724Y

CN201186724Y - Adjustable oil pumping device for bicycle hydraulic brake system

Info

Publication number: CN201186724Y
Application number: CNU2007203122612U
Authority: CN
Inventors: 蔡赐芳
Original assignee: Tektro Technology Corp
Current assignee: Tektro Technology Corp
Priority date: 2007-12-27
Filing date: 2007-12-27
Publication date: 2009-01-28
Anticipated expiration: 2017-12-27

Abstract

The utility model discloses a squirt oil system with adjustable bicycle oil pressure braking system includes one and sets firmly on the handlebar hand and is formed with the body of an oil storage tank, one sets up the master control jar of pressing in the body, a pivot is located and is used for driving the handle that the master control pressed the jar on the body, wherein, utilizes the screw thread to be equipped with the adjusting element of an adjustment master control jar idle stroke on this handle soon, and the high-pressure oil that this master control pressed jar output again carries to the arresting gear of bicycle and reaches the purpose of slowing down or stopping by an oil pipe of locating on the body. The user can properly adjust the position of the piston according to the property of the bicycle and the riding environment, not only can effectively execute the braking action, but also can give consideration to the riding comfort; meanwhile, the mechanical advantage of the utility model can be properly adjusted, and the purpose of saving labor can be achieved.

Description

The adjustable purt oil device of bicycle oil pressure braking system

Technical field

The utility model relates to a kind of purt oil device of bicycle oil pressure braking system, refers to a kind of purt oil device of adjustable bicycle oil pressure braking system especially.

Background technology

Along with making rapid progress of bicycle process industry, the braking system of standard bicycle, for example: Drum brake, can't satisfy the requirement of high-grade bike.General senior mountain-climbing car or sports bicycle all adopt the good hydraulic type brake of light weight and brake benefit usually at present.

General bicycle oil pressure braking system is as if divide the purt oil device that can be divided into brake equipment haply and brake equipment be provided oil pressure according to function, because the non-pass of brake equipment technical field of the present utility model, only set forth explanation below therefore at the purt oil device of bicycle oil pressure brake.

The purt of the bicycle oil pressure braking system of commonly using oil device is formed at oil resevoir, in the body and is located at master control cylinder pressure and in the body and is hubbed on the body in order to the handle of operation master control cylinder pressure nothing more than including a body,, and it mainly advances the piston of master control cylinder pressure and then high pressure is put the purpose that brake equipment reaches braking deceleration by sending by handle.

Yet, the purt oil device of commonly using is owing to the mechanism and the function of not tool adjustment, can not look road conditions environment or different users's demand and adjust the backlash of piston in the master control cylinder pressure, therefore, the builder must answer the bicycle of difference in functionality and manufacture and design the purt oil device of different styles, could satisfy the different user demand of customer.Improve the cost of bicycle oil pressure braking system virtually, also reduced the competitiveness of product in market simultaneously.

The utility model content

The purpose of this utility model is to provide a kind of backlash and mechanical advantage of itself of adjusting the master control cylinder pressure to make the user that the adjustable purt oil device of the bicycle oil pressure braking system of different feels is arranged when the application of force.

For achieving the above object, the utility model adopts following structure:

A kind of adjustable purt oil device of bicycle oil pressure braking system mainly comprises:

One is fixedly arranged on the handlebar and is formed with the body of an oil resevoir;

One is arranged at the master control cylinder pressure in the body, in order to the braking system of high pressure oil to bicycle to be provided;

One is hubbed on the body in order to drive the handle of master control cylinder pressure, wherein, utilizes screw thread to be installed with an adjustment assembly of adjusting master control cylinder pressure backlash on this handle.

This master control cylinder pressure includes a cylinder groove that axially is formed in the body, this cylinder groove extends to the surface of body and is communicated with oil resevoir with one second oilhole by one first oilhole, wherein the diameter of this first oilhole tiny in this second oilhole diameter and be positioned at the front end of master control cylinder pressure, this master control cylinder pressure is equiped with a spring in regular turn from the bottom of cylinder groove, one piston, one connecting rod and a retaining piece, this retaining piece is that blocking is positioned on the inwall of cylinder groove to avoid connecting rod, assembly such as piston and spring breaks away from body in the cylinder groove, the two ends of this spring are pasted the bottom surface that is butted on the cylinder groove and the end of pushing tow piston respectively, and piston and connecting rod are positioned in the master control cylinder pressure.

The two ends of this piston are arranged with one first oil sealing and one second oil sealing respectively, two oil sealed ora terminalis paste the inwall that is butted on the cylinder groove in the air tight mode, when piston not during start, this first oil sealing is between first oilhole and second oilhole, and the second oil sealed stroke perseverance is no more than second oilhole, this piston also is formed with a neck between two oil sealings, this neck optionally is communicated with second oilhole, when piston during in backlash, this neck can be for temporary start oil from oil resevoir, the end that this piston differs from spring one end be formed with a pod be provided with can universal pivot mode link an end of connecting rod.

Be formed with one on this handle for locking the screw that runs through of establishing the adjustment element, adjust element and be provided with outside thread, therefore, when the adjustment element rotates with respect to handle, also move the distance of adjustment first oil sealing and first oilhole simultaneously along the axis of screw.

This connecting rod is a pair of spherical connecting bar and runs through this retaining piece, and two ends are formed with one first spheroid and one second spheroid respectively, and this first spheroid partly is placed in the pod of piston, and second spheroid then links to the adjustment element in mode that can universal pivot.

This adjustment element is formed with the pod of ccontaining second spheroid towards an end off-centre of connecting rod, and both link in mode that can universal pivot, and this adjustment element axially is equiped with a manual knob, makes things convenient for the user to rotate this adjustment element.

By this, specifically represent, make the attribute of the visual bicycle of user and the fitness of environment ground that drives adjust position of piston, except that can carrying out the brake action effectively, also can take into account the traveling comfort that drives through of the present utility model; Simultaneously suitably adjust mechanical advantage of the present utility model, also can reach the labour-saving purpose.

Description of drawings

Fig. 1 is a stereo appearance figure of the present utility model.

Fig. 2 is a three-dimensional exploded view of the present utility model.

Fig. 3 is a cutaway view of the present utility model.

Fig. 3 A is the cutaway view of the utility model other direction.

Fig. 3 B is an illustrative view of the present utility model.

Fig. 4 is the action scheme drawing of adjustment piston position of the present utility model.

Fig. 5 is the longest action scheme drawing of piston backlash of the present utility model.

Fig. 6 is the action scheme drawing of adjustment piston position of the present utility model.

Fig. 7 is the shortest action scheme drawing of piston backlash of the present utility model.

Fig. 8 is the action scheme drawing of adjustment mechanical advantage of the present utility model.

The primary clustering nomenclature

10 bodies, 11 oil resevoirs

20 master control cylinder pressures, 21 cylinder grooves

211 first oilholes, 212 second oilholes

22 springs, 23 pistons

231 first oil sealings, 232 second oil sealings

233 necks, 234 pods

24 connecting rods, 241 first spheroids

242 second spheroids, 25 retaining pieces

30 handles, 301 screws

31 adjust assembly 311 pods

312 manual knobs

The specific embodiment

The utility model is relevant for a kind of adjustable purt oil device of bicycle oil pressure braking system, see also shown in Fig. 1 to Fig. 3 B figure, the utility model consists predominantly of one and is fixedly arranged on the handlebar and is formed with the body 10 of an oil resevoir 11, one is arranged at the master control cylinder pressure 20 in the body 10, one is hubbed on the body 10 in order to drive the handle 30 of master control cylinder pressure 20, wherein, utilize screw thread to be installed with an adjustment element 31 of adjusting master control cylinder pressure 20 backlashes on this handle 30, the high pressure oil exported of this master control cylinder pressure 20 is delivered to the brake equipment of bicycle and reaches the purpose of slowing down or stopping by an oil pipe 40 that is connected with on body 10 again.

This master control presses 20 to include a cylinder groove 21 that axially is formed in the body 10, this cylinder groove 21 is to extend to the surface of body 10 and be communicated with oil resevoir 11 by one first oilhole 211 and one second oilhole 212, wherein the diameter of this first oilhole 211 tiny in this second oilhole 212 diameter and be positioned at the front end of master control cylinder pressure 20, this master control cylinder pressure 20 is equiped with a spring 22 in regular turn from the bottom of cylinder groove 21, one piston 23, one connecting rod 24 and a retaining piece 25, these retaining piece 25 blockings are positioned on the inwall of cylinder groove 21 to avoid connecting rod 24, assemblies such as piston 23 and spring 22 break away from body 10 in cylinder groove 21.The two ends of this spring 22 are pasted the bottom surface that is butted on cylinder groove 21 and the end of pushing tow piston 23 respectively, use piston 23 and connecting rod 24 are positioned in the master control cylinder pressure 20.

The two ends of this piston 23 are arranged with one first oil sealing 231 and one second oil sealing 232 respectively, the inwall that is butted on cylinder groove 21 pastes in airtight mode in the ora terminalis system of two oil sealings 231,232, when piston 23 not during start, this first oil sealing 231 is between first oilhole 211 and second oilhole 212, and the stroke perseverance of second oil sealing 232 is no more than second oilhole 212.This piston 23 also is formed with a neck 233 in 231,232 on two oil sealings, this neck 233 is optionally to be communicated with second oilhole 212, when piston 23 during in backlash, this neck 233 can be for temporary start oil from oil resevoir 11, at this moment, second oil sealing 232 can be avoided autonomous dynamic pressure cylinder 20 seepages of start oil.The end system that this piston 23 differs from spring 22 1 ends be formed with a pod 234 be provided with can universal pivot mode link an end of connecting rod 24.

This connecting rod 24 is for a pair of spherical connecting bar and run through this retaining piece 25, therefore its two ends are formed with one first spheroid 241 and one second spheroid 242 respectively, wherein, these first spheroid, 241 parts are placed in the pod 234 of piston 23, and second spheroid 242 then links in mode that can universal pivot and adjusts element 31.

Be formed with on this handle 30 one for lock establish adjust element 31 run through screw 301, be provided with outside thread owing to adjust element 31, therefore, when adjusting element 31, also move the distance of adjustment first oil sealing 231 and first oilhole 211 simultaneously along the axis of screw 301 with respect to handle 30 rotations, and reach the purpose of adjusting piston 23 backlash distances, extremely shown in Figure 6 as Fig. 4.This adjustment element 31 is towards the eccentric pod 311 that is formed with ccontaining second spheroid 242 of a part of end system of connecting rod 24, both are linked in mode that can universal pivot, and this adjustment element 31 is axially to be equiped with a manual knob 312 to make things convenient for the user to rotate this adjustment element 31 in addition.

The principle that the utility model is carried out the brake action is summarized as follows, when the user moves handle, because the driving of connecting rod 24, piston 23 can be towards the motion of the bottom of cylinder groove 21, when first oil sealing 231 is not crossed first oilhole 211, originally be arranged in the start oil of master control cylinder pressure 20, can see through first oilhole 211 and flow in the oil resevoir 11, flow in the space of piston 23 necks 233 and cylinder groove 21 inwalls via second oilhole 212, the distance definition that this moment, piston 23 was moved is a backlash again.The moment of crossing first oilhole 211 when first oil sealing 231 promptly begins to compress the start oil that originally is arranged in master control cylinder pressure 20, and high pressure oil carried out the action of slowing down or stopping by oil pipe 40 is delivered to the brake equipment of bicycle, and piston 23 to cross the distance definitions that moved first oilhole, 211 backs be effective travel.Because first oil sealing 231 can often move back and forth in the hole of first oilhole 211, and influence the usefulness of first oil sealing, 231 compression start oil for end scratch first oil sealing 231 of avoiding first oilhole 211, the bore of this first oilhole 211 should not be too big, so under the dual consideration in brake usefulness and oil sealing service life, in preferred embodiment of the present utility model, the bore of this first oilhole 211 system is made as 0.5 millimeter.

Seeing also as shown in Figure 4, is that distance with 211 of first oil sealing 231 and first oilholes is when being adjusted to maximum (backlash is the longest); Please consulting as shown in Figure 6, is that the distance with 211 of first oil sealing 231 and first oilholes is adjusted to hour (backlash is the shortest) again; Please consult simultaneously as Fig. 5 to shown in Figure 7, because 30 fixed amplitude that can press down of handle, therefore, when carrying out the brake action, the total kilometrage (backlash+effective travel) of piston 23 in master control cylinder pressure 20 also fixed, when the backlash of piston 23 is transferred to maximum, its oil mass that can compress just is minimum, therefore the user can feel that the antagonistic force (holding sense) from brake equipment is also minimum, and relatively, the lag time when carrying out brake is also longer; Otherwise when the backlash of piston 23 is transferred to hour, its oil mass that can compress just is maximum, so the user can feel the also maximum of antagonistic force (holding sense) from brake equipment, and relatively, the lag time when execution is braked is also shorter.Therefore, the user must look its actual needs, suitably utilize to adjust the distance that element 31 is adjusted 211 of piston 23 and first oilholes.

See also as shown in Figure 8, the pivoting point of handle 30 and body 10 is considered as fulcrum, the contact point of adjusting element 31 and connecting rod 24 is considered as resistance points, and gripping the place of handle, the user is considered as the point of application, in Fig. 8, resistance points is far away from fulcrum, at this moment mechanical advantage minimum of the present utility model; Be set for the eccentric owing to adjust the pod 311 of assembly 31, therefore, when adjustment assembly 31 is slowly rotated by the state among Fig. 8, can be with resistance points toward the direction band of fulcrum, when rotating to 180 when spending, as shown in Figure 8, the most close fulcrum of resistance points, mechanical advantage maximum of the present utility model at this moment.

In sum, the utlity model has following advantage:

1. the position of piston 23 is adjusted on the attribute of the visual bicycle of user and the fitness of environment ground that drives, except that carrying out effectively brake moves, also can take into account the traveling comfort that drives.

2. suitably adjust mechanical advantage of the present utility model, not only also can not reach the labour-saving purpose outside the influence brake usefulness.

3. applied widely, adjust the position of piston 23, that is the actuating device braking force that can provide just of compressible oil mass in the master control cylinder pressure 20 is provided, therefore, no matter be mountain-climbing car, sports car or the car of riding instead of walk of city jungle, all can provide suitable deceleration and stopping performance.

The above embodiment is not in order to restriction the utility model, so the displacement of the change of numerical value or equivalent elements must be subordinate to category of the present utility model such as only in order to explanation the utility model.

Claims

1. An adjustable oil pumping device for a bicycle hydraulic brake system, which mainly includes:

a body fixed on the handlebar and forming an oil storage tank;

a main control cylinder arranged in the body;

A handle pivotally arranged on the body to drive the main control cylinder is characterized in that: the handle is threaded with an adjustment assembly for adjusting the invalid stroke of the main control cylinder.

2. The adjustable oil pumping device of a bicycle hydraulic brake system according to claim 1, wherein the main control cylinder includes a cylinder groove axially formed in the body, and the cylinder groove extends to the surface of the body And a first oil hole and a second oil hole communicate with the oil storage tank, wherein the diameter of the first oil hole is smaller than the diameter of the second oil hole and is located at the front end of the main control cylinder. A spring, a piston, a connecting rod and a stop piece are installed in order from the bottom of the cylinder groove. The stop piece is fixed on the inner wall of the cylinder groove, and the two ends of the spring are attached to the bottom surface of the cylinder groove respectively. And push the end of the piston, the piston and the connecting rod are positioned in the main control cylinder.

3. The adjustable oil pumping device of the bicycle hydraulic brake system according to claim 2, characterized in that: the two ends of the piston are respectively sleeved with a first oil seal and a second oil seal, and the ends of the two oil seals are sealed with gas The piston is tightly attached to the inner wall of the cylinder groove, and a neck is formed between the two oil seals. The end of the piston different from the end of the spring forms a socket for connecting the end of the connecting rod in a universally pivotable manner. .

4. The adjustable oil pumping device of the bicycle hydraulic brake system according to claim 3, characterized in that: the handle is formed with a through screw hole for locking the adjustment element, and the adjustment element is provided with an external thread.

5. The adjustable oil pumping device of the bicycle hydraulic brake system according to claim 3, characterized in that: the connecting rod is a pair of spherical connecting rods and runs through the stop piece, and a first sphere and a first ball are formed at both ends respectively. A second sphere, the first sphere is partly accommodated in the socket of the piston, and the second sphere is linked to the adjustment element in a universally pivotable manner.

6. The adjustable oil pumping device of the bicycle hydraulic brake system according to claim 5, characterized in that: one end of the adjusting element facing the connecting rod is eccentrically formed with a socket for accommodating the second ball, and the two can be used together. Linked in a pivoting manner, and the adjustment element is axially equipped with a manual knob.