CN2327833Y - Disc brake - Google Patents

Abstract

The utility model relates to a disc brake used on a bicycle or a motorcycle. The utility model comprises a cylinder which is provided with a master pump cylinder and two piston cylinders, one opening side of the two piston cylinders is provided with a jaw, a flow channel is arranged between the master pump cylinder and each piston cylinder, and the opening of each piston cylinder is arranged on the flank of the jaw near the inner side. A master pump piston is axially and glidingly arranged in the master pump cylinder, a brake line penetrates the master pump cylinder and the master pump piston and is locked and fixed by a lock fixing head, and two brake pistons are arranged in the piston cylinders. An inner brake piece group and an outer brake piece group are correspondingly arranged in the jaw in parallel, and the cylinders are fixed on the automobile frame by a fixing support.

Description

Disc brake

The utility model relates to the break of a kind of bicycle or motorcycle, particularly a kind of break that produces braking action by hydraulic transmission.

Progress along with the epoch, the people that move in modern society must grasp timeliness, all stress speed, therefore, just to become people indispensable for the traffic tool fast, relative, people are also constantly promoting the quality requirements of the traffic tool, and the brake system of the traffic safety that especially concerns is much accounted of especially.

The kind and the form of brake system are a lot, and it mainly is divided into dish formula and drum-type two big classes, and drum brakes is because constructional restriction, and its radiating effect is poor, and it is too high and produce the phenomenon of vapour lock and decay to be easy to Yin Wendu, has its very important crisis to exist in fact; Direct and the outer gas of the braking surface of disc brakes contacts, and braking surface is confined to sub-fraction, other partly often are in the state of cooling, good thermal diffusivity is arranged, the anti-decay that tool is good, and can effectively prevent the generation of vapour lock, be widely used on automobile, motorcycle, the bicycle brake system.

The above-mentioned disc brake of commonly using, it orders about the power of piston start, be to provide by an independent general braking pump that makes, general braking pump is supplied with fastening device with the fluid force feed via a pipeline, order about piston and promote the work that brake block clamps the brake of disc do, the design that this general braking pump and fastening device separately make, the space of aggrandizement apparatus not only, the pipeline that exposes is also impaired than being easier to be collided, partly be easy to produce the phenomenon of leakage of oil in impaired or joint, cause whole brake system to lose efficacy, abnormally dangerous during driving, a real big defective for using and designing.

The purpose of this utility model, promptly providing a kind of disc brake, it mainly is at bicycle, motorcycle, general braking pump and piston cylinder are made in same cylinder body, action by general braking pump enters piston cylinder with fluid through the runner force feed of cylinder interior, and then orders about piston promotion brake block, and brake block and outer brake block contact and clamp with disc and realize braking in making in regular turn, its omission exposes the making and settlement of pipeline, the probability of leakage of oil can be reduced to minimum level.

The technical solution of the utility model is:

A kind of disc brake comprises a cylinder body, a total pump piston, and two Braking pistons, an interior brake block group and an outer brake block group, a yoke spring, a fixing frame is characterized in that:

Be equipped with a master cylinder on this cylinder body, the master cylinder side is provided with a lubricating cup, the two-piston cylinder is located at the upside of master cylinder, opening one side of two-piston cylinder is provided with a jaw, be positioned at this piston cylinder upside and side on this cylinder body and be respectively equipped with two pin-and-holes, one exhaust port is located at cylinder body top, in between master cylinder and lubricating cup, be equipped with oil through, there is runner to communicate between master cylinder and the piston cylinder, wherein the inlet of lubricating cup cooperates epithelium sealing with an oil cup cap, exhaust port and piston cylinder communicate, and its opening cooperates Exhaust screw locking sealing with a pad, and the opening of piston cylinder is positioned on the jaw side in the inner part;

This total pump piston, endwisely slip and be installed in the master cylinder of above-mentioned cylinder body, in total pump piston and piston cap inner room device one spring is arranged, braking string is ccontaining with a braking string pillar, the end of braking string pillar is sheathed on the rear end of piston cap cover, braking string is turned right and is run through master cylinder, piston cap cover, spring and total pump piston and be locked with a locking head, the left end of total pump piston makes into less diameter and cooperates master cylinder to constitute a pressurized chamber, the right-hand member of pressurized chamber is communicated with oil through and lubricating cup, and left end then has runner to pass to piston cylinder;

This two Braking piston utilizes an oil seal washer and dirt-proof boot to be installed in the piston cylinder of aforementioned cylinder body respectively, and the one end exposes on the side of jaw,

Be somebody's turn to do interior brake block group and be somebody's turn to do outer brake block group, utilize two brake block pins to be located in the jaw, become parallel relative status;

This yoke spring is installed in two brake block group downsides, is positioned at the bottom of jaw;

This fixing frame utilizes the bolt pin pin to be located on two pin-and-holes of cylinder body, and fixing frame then is fixed on the vehicle frame.

Effect of the present utility model is:

The utility model is integral the general braking pump and the making and settlement of Braking piston cylinder of disc brake, by omitting the pipeline that connects therebetween, it is minimum that leakage of oil and rate of fault are reduced to, it has improved the person of commonly using effectively general braking pump has separately been installed the many shortcomings that are connected with pipeline more again with the Braking piston cylinder, more can guarantee traffic safety.

Relevant the utility model is for reaching above-mentioned purpose, and means that adopted and effect thereof are lifted a possible embodiments now and cooperated appended drawing to give that details are as follows,

Figure 1A is the utility model embodiment disc brake entire combination schematic representation.

Figure 1B is the utility model embodiment disc brake and wheel central authorities disc combination of side view.

Fig. 2 is the utility model embodiment disc brake stereo appearance figure.

Fig. 3 is the utility model embodiment disc brake three-dimensional exploded view.

Fig. 4 is the utility model embodiment disc brake top plan view.

Fig. 5 is the utility model embodiment disc brake front sectional elevation.

Fig. 6 is the utility model embodiment disc brake side cutaway view.

Fig. 7 is the utility model embodiment disc brake top plan view that fluid flows to when the brake stroke.

Fig. 8 is the utility model embodiment disc brake front sectional elevation that fluid flows to when the brake stroke.

Fig. 9 is the utility model embodiment disc brake side cutaway view that fluid flows to when the brake stroke.

Figure 10 is the top plan view that the utility model embodiment disc brake is flowed to by liquid when the playback stroke.

Figure 11 is the utility model embodiment disc brake front sectional elevation that fluid flows to when the playback stroke.

Figure 12 is the utility model embodiment disc brake side cutaway view that fluid flows to when the playback stroke.

Figure 13 A is the utility model embodiment disc brake amplification profile.

Figure 13 B be in the utility model embodiment disc brake Braking piston in the brake stroke phase diagram.

Figure 13 C be in the utility model embodiment disc brake Braking piston in the playback stroke phase diagram.

At first, see also Fig. 1: the entire combination schematic representation of the utility model embodiment disc brake.The utility model embodiment disc brake, this brake 1 is striden the both sides of being located at wheel central authorities disc 9, be held on disc 9 submarginal both sides simultaneously with interior brake block group 63 and outer brake block group 64 during brake, reach the effect of braking by the frictional force that clamping therebetween produced, wheel is slowed down rapidly or stop, and reach the purpose of brake.

See also Fig. 2: the utility model embodiment disc brake stereo appearance figure; With Fig. 3: the utility model embodiment disc brake three-dimensional exploded view.The utility model embodiment disc brake, this brake 1 is mainly by a cylinder body 2, one total pump piston 3, institutes such as two Braking pistons 6 and a fixing frame 7 constitute, be equipped with a master cylinder 21 on the cylinder body 2, one lubricating cup 22, two-piston cylinder 25, one exhaust ports 27, one jaw 28, with two pin-and-holes 29, master cylinder 21 ccontaining total pump pistons 3 wherein, the one end is limited to total pump piston 3 in the master cylinder 21 with piston cap cover 4 with snap ring 35 the other ends, can do suitable endwisely slipping, wherein be equiped with the leather cup 32 of sealing usefulness between total pump piston 3 and master cylinder 21, oil sealing 33 and oil sealing 34 are equiped with a spring 44 between piston cap cover 4 and total pump piston 3; Lubricating cup 22 makes in master cylinder 21 other, and for containing the usefulness of brake fluid, its entry end is with an epithelium 51 sealings that are situated between of an oil cup cap 5 mats; Two-piston cylinder 25 makes in the upside of master cylinder 21, its opening just in time is positioned on jaw 28 side in the inner part, ccontaining Braking piston 6, wherein between Braking piston 6 and piston cylinder 25 and be equiped with oil seal washer 61 and dirt-proof boot 62, two Braking pistons 6 are after installing, the one end exposes on the side of jaw 28, can do suitable ejecting and the retraction campaign; Interior brake block group 63 and outer brake block group 64 utilize two brake block pins, 65 pins to be located in the jaw 28, and wherein interior brake block group 63 is positioned at close Braking piston 6 sides of jaw 28, and 64 of outer brake block groups and its interval one suitably distance are positioned at an other side; In the bottom of jaw 28, that is interior brake block group 63 and outside the downside of brake block group 64 be equiped with a yoke spring 66, it is to prevent that brake block from producing the usefulness of resonance because of the vibration of car; Fixing frame 7 utilizes bolt pin 71 and bolt pin 74 pins to be located on two pin-and-holes 29 of cylinder body 2 can do suitable slip, and it is installed in (bicycle) frame-front fork appropriate location, for cylinder body 2 and in brake block group 63 when sliding as supporting and the usefulness of backstop; Hexagon nut 72 was connected with fixing frame 7 in one end of bolt pin 71 utilized, and an other end then is inserted in the pin-and-hole 29 of cylinder body 2, was arranged with a dirt-proof boot 73 on the bolt pin 71 of 7 of cylinder body 2 and fixing frames; Bolt pin 74 1 ends cooperate spring washer 75 to be fixed on the fixing frame 7, and the other end then cooperates lining 76 to be inserted in another pin-and-hole 29 of cylinder body 2; Exhaust screw 8 tie spacers 81 are fixed on the opening of the exhaust port 27 that communicates with piston cylinder 25, are by discharged air and the usefulness that suitably seals.

See also Fig. 4: the utility model embodiment disc brake top plan view; With Fig. 5: the front sectional elevation of the utility model embodiment disc brake; With Fig. 6: the side cutaway view of the utility model embodiment disc brake.The combination of the utility model examples of implementation is state shown in Fig. 4～6 after finishing, wherein total pump piston 3 is installed in the master cylinder 21 of cylinder body 2, the two ends of master cylinder 21 are installed snap ring 35 and piston cap cover 4 respectively, so that total pump piston 3 is limited to inside, the inside of total pump piston 3 is provided with the axial hole on one or two rank, so that allow braking string 42 pass and device one spring 44 between itself and piston cap cover 4, utilize the strength of spring 44, remain in the braking state for the treatment of of the end of keeping right when making total pump piston 3 flat, braking string 42 is ccontaining with a braking string pillar 41, the end of braking string pillar 41 is sheathed on the rear end of piston cap cover 4,42 of braking string run through piston cap cover 4, spring 44 and total pump piston 3 are locked with a locking 43 again, all sides of total pump piston 3 are provided with suitable annular groove, so that installing leather cup 32, oil sealing 33 and oil sealing 34, its left end makes into less diameter so that cooperate master cylinder 21 to constitute a pressurized chamber 31, the right-hand member of pressurized chamber 31 has oil through 23 and lubricating cup 22 to be communicated with, left end then has runner 26 to pass to piston cylinder 25, wherein the machining hole of oil through 23 seals with a steel ball 24 respectively in machining its opening of back.

See also Fig. 7: the utility model embodiment disc brake top plan view that fluid flows to when the brake stroke; With Fig. 8: the utility model embodiment disc brake is in the brake front sectional elevation that fluid flows to during stroke; With Fig. 9: the utility model embodiment disc brake is in the brake side cutaway view that fluid flows to during stroke.The utility model embodiment is on reality is used.In desire when brake, is shown in Fig. 7～9, as long as by the operation brake lever with braking string 42 pulling of turning left, total pump piston 3 is promptly toward left movement, when its toward left movement a little the distance after, the oil through 23 that pressurized chamber 31 and lubricating cup are 22 is promptly blocked, 31 of pressurized chambers communicate with runner 26 and piston cylinder 25, therefore, when total pump piston 3 continued toward left movement, the volume of pressurized chamber 31 dwindled gradually, and its inner fluid promptly is extruded gradually and flows to piston cylinder 25, push by Braking piston 6 inboards, make it do outward motion, and then brake block group 63 is pressed to disc 9 in promoting, in interior brake block group 63 with after disc 9 contacts, produce reaction force make cylinder body 2 backward drawing (imaginary line among Fig. 9 is the state before the drawing, solid line is a state behind the drawing), and then outer brake block group 64 is also contacted with disc 9, produce braking effect.

See also Figure 10: the utility model embodiment disc brake top plan view that fluid flows to when the playback stroke; With Figure 11: the utility model embodiment disc brake is in the playback front sectional elevation that fluid flows to during stroke; Figure 12: the utility model embodiment disc brake side cutaway view that fluid flows to when the playback stroke.The utility model embodiment is after brake finishes the relieving brake lever, total pump piston 3 and braking string 42 are promptly by the playback of turning right of the restoring force of spring 44, this moment, the volume of pressurized chamber 31 increased gradually, produce a pull of vacuum, fluid in the piston cylinder 25 are sucked back pressurized chamber 31, so Braking piston 6 contracts toward piston cylinder 25 in, removed the pressure of interior brake block group 63 and 64 pairs of discs 9 of outer brake block group, revert to original position, go to brake once more.

See also Figure 13 A: the amplification profile of the utility model embodiment disc brake; Figure 13 B: Braking piston is in the phase diagram of brake stroke in the utility model embodiment disc brake; Figure 13 C: Braking piston is in the phase diagram of playback stroke in the utility model embodiment disc brake.Braking piston 6 among the utility model embodiment is equiped with an oil seal washer 61 between itself and piston cylinder 25, oil seal washer 61 is the relative movement of opposing both (Braking piston 6 and piston cylinder 25) in the brake stroke, can produce resiliently deformable (seeing also Figure 13 B), then the restoring force with this resiliently deformable makes Braking piston 6 return back to original position (seeing also Figure 13 C) rapidly in the playback stroke.

Claims (1)

1, a kind of disc brake comprises a cylinder body, a total pump piston, and two Braking pistons, an interior brake block group and an outer brake block group, a yoke spring, a fixing frame is characterized in that:

Be equipped with a master cylinder on this cylinder body, the master cylinder side is provided with a lubricating cup, the two-piston cylinder is located at the upside of master cylinder, opening one side of two-piston cylinder is provided with a jaw, be positioned at this piston cylinder upside and side on this cylinder body and be respectively equipped with two pin-and-holes, one exhaust port is located at cylinder body top, in between master cylinder and lubricating cup, be equipped with oil through, there is runner to communicate between master cylinder and the piston cylinder, wherein the inlet of lubricating cup cooperates epithelium sealing with an oil cup cap, exhaust port and piston cylinder communicate, and its opening cooperates Exhaust screw locking sealing with a pad, and the opening of piston cylinder is positioned on the jaw side in the inner part;

This total pump piston, endwisely slip and be installed in the master cylinder of above-mentioned cylinder body, in total pump piston and piston cap inner room device one spring is arranged, braking string is ccontaining with a braking string pillar, the end of braking string pillar is sheathed on the rear end of piston cap cover, braking string is turned right and is run through master cylinder, piston cap cover, spring and total pump piston and be locked with a locking head, the left end of total pump piston makes into less diameter and cooperates master cylinder to constitute a pressurized chamber, the right-hand member of pressurized chamber is communicated with oil through and lubricating cup, and left end then has runner to pass to piston cylinder;

This two Braking piston utilizes an oil seal washer and dirt-proof boot to be installed in the piston cylinder of aforementioned cylinder body respectively, and the one end exposes on the side of jaw,

Be somebody's turn to do interior brake block group and be somebody's turn to do outer brake block group, utilize two brake block pins to be located in the jaw, become parallel relative status;

This yoke spring is installed in two brake block group downsides, is positioned at the bottom of jaw;

This fixing frame utilizes the bolt pin pin to be located on two pin-and-holes of cylinder body, and fixing frame then is fixed on the vehicle frame.

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