CN206615327U - Bicycle expansion brake hub assembly - Google Patents

Abstract

The utility model discloses a kind of Bicycle expansion brake hub assembly, it is characterised in that it includes flower-drum, some brake scotch, hub spindle, link gear, outer cover plate, return unit, it is using outer cover plate that brake scotch is spacing in the flower-drum of integral type together with link gear, overall volume is reduced so that structure is more compact, and alleviates weight, dismounting is facilitated；Secondly when being braked, using brake scotch, distending brakes to the flower-drum of integral type in the presence of link gear, reduces original flower-drum because split sets the loosening skidding easily occurred, is substantially improved on braking effect.

Description

Bicycle expansion brake hub assembly

Technical field

The utility model is related to a kind of bicycle part, more particularly to a kind of Bicycle expansion brake hub assembly.

Background technology

With the development of transport facility, bicycle trade makes rapid progress, and people also propose more to the performance of bicycle High requirement, for example, want multi-change speed, and bearing capacity is big, and anti-seismic performance is good, durable in use, especially to there is good Brake Energy Power.Current bicycle main will be braked to flower-drum by brake gear and realize brake process, therefore the braking of bicycle In front of effect, rear drum be configured with very big contact, but the structure of flower-drum at present is complex, the flower-drum bearing capacity after assembling It is smaller, cause poor on braking ability.

Utility model content

The purpose of this utility model is to provide a kind of compact conformation, braking effect preferably Bicycle expansion brake hub assembly.

Above-mentioned technical purpose of the present utility model technical scheme is that：

A kind of Bicycle expansion brake hub assembly, including：

Flower-drum, is made up of floral disc, middle part connecting tube and system drum integral type of stopping；

Some brake scotch, house and be distributed in it is described stop in system drum, it is removable and inconsistent with system drum of stopping；

Hub spindle, can relatively rotate through the flower-drum and with flower-drum, and the hub spindle two ends pass through fastener The assembly is fixed on vehicle frame；

Link gear, is equally contained in the system of stopping and rouses interior, and may act on some brake scotch away from hub spindle axle The radial distance of line；

Stopped for the brake scotch and link gear to be limited in system drum outer cover plate, the side for being covered in system drum of stopping；

Return unit, makes some brake scotch have the synchronous movement tendency drawn in hub spindle axis direction all the time.

It is using outer cover plate that brake scotch is spacing in integral type together with link gear by using above-mentioned technical proposal In flower-drum, overall volume is reduced so that structure is more compact, and alleviates weight, dismounting is facilitated；Secondly made Using brake scotch, distending brakes to the flower-drum of integral type in the presence of link gear when dynamic, reduce original flower-drum by The loosening skidding easily occurred is set in split, is substantially improved on braking effect.

Preferably, the link gear includes skeleton, some rollers being distributed on skeleton, rotation cam and stopped Car spanner, the rotation cam can control some rollers and leave the generation radial displacement of hub spindle axis, the roller and brake scotch Inner side it is inconsistent all the time, wherein brake spanner be connected with rotation cam, when to brake spanner force one brake force when described in Brake scotch and system drum of stopping are inconsistent.

By using above-mentioned technical proposal, using braking, the brake force of application is delivered in rotation cam by spanner, is rotated Cam is rotated, while promoting roller to move radially, utilizes moving radially so that some brake scotch are outwards swollen for roller Open conflict to be braked to system drum of stopping, each accessory is detachably assembled, and is convenient for changing.

Preferably, the skeleton includes chassis and on the side end face of chassis one and circumferential uniform limited block, The regulating tank for housing roller is formed between adjacent two limited block, the is offered on the end face raised departing from limited block Offered in the middle part of one noise reduction groove, the chassis and abutting part is provided with through hole, the through hole, the rotation cam is arranged on abutting In portion, the positioning hole worn for hub spindle is offered in the middle part of the abutting part.

By using above-mentioned technical proposal, the setting of abutting part by the through hole undergauge being originally opened in the middle part of chassis, take and Instead of worn using the abutting part middle aperture positioning hole smaller compared to through hole for hub spindle, improve the installation accuracy to hub spindle It is required that reducing radial-play, axiality when installing between flower-drum is also improved in addition, reduces and rocks；Next utilizes abutting part The spacing axial movement of rotation cam side, facilitates the installation of rotation cam；And the first drop opened up on limited block Groove of making an uproar reduces the manufacturing cost of skeleton first, also reduce and stop system drum contact area, reduce both friction when Noise.

Preferably, it is connected between the abutting part and chassis by the circumferentially uniform contiguous block of polylith, adjacent two connect Connect and form the second noise reduction groove between block；The contiguous block corresponds to the position of limited block, and one end is connected with limited block, the other end It is connected with abutting part, wherein being set to arcwall face departing from the end face of limited block.

By using above-mentioned technical proposal, contiguous block also enhances limit in addition to playing a part of connection abutting part and chassis The intensity effect of position block and abutting part, improves stability of the flower-drum in rotation process middle skeleton, and connect using adjacent two Connect noise when the second noise reduction groove formed between block further reduces braking.

Preferably, the rotation cam includes connecting portion and the cam part being distributed up and down, and the connecting portion includes The first stopper slot is formed between circumferential uniform the first projection on the outer wall, adjacent two first projection, the brake spanner includes Terminal pad and rotating turret, the terminal pad offer circumferential on the mounting hole housed for connecting portion, the inwall of the mounting hole It is evenly equipped with the second projection and the second stopper slot for interlocking with the first projection and the first stopper slot and engaging.

By using above-mentioned technical proposal, it is connected together using first, second projection with interlocking for first, second stopper slot Mode causes brake spanner to realize synchronous axial system with rotation cam, and both installation accuracies are higher, and can conveniently realize both Unloading process, compact conformation.

Preferably, there is cascaded surface, the terminal pad is connected to described rank between the connecting portion and cam part The upper surface of some rollers is covered on tread and partly, wherein the cam part includes circumferential be distributed on rotation cam outer wall Cam and the brake release groove that is formed between two adjacent cams.

By using above-mentioned technical proposal, cascaded surface is used as the locating surface of brake spanner, is further conveniently being stopped The installation of car spanner and the further lifting of installation accuracy, the cam and brake release groove energy secondly set in cam part Realize that the batch (-type) of roller is moved radially.

Preferably, the 3rd stopper slot rotated for rotating turret, the brake spanner are further opened with the outer cover plate On be additionally provided with all the time have toward release brake force side direction movement tendency torsion spring；It is further fixed on the outer cover plate dust-proof Lid, the dust cap has lug boss, and the lug boss is constituted to be formed with outer cover plate and passed and rotation-limited for rotating turret part 4th stopper slot of the frame anglec of rotation.

By using above-mentioned technical proposal, outer cover plate is moved axially as the side of spacing link gear and brake scotch Accessory is used, dust cap be arranged on improve outer cover plate connection fixing outside, moreover it is possible to prevent impurity from entering inside outer cover plate； Secondly the anglec of rotation for having combined rotating turret spacing of the 3rd stopper slot on outer cover plate and dust cap and the 4th stopper slot, with Rotation cam, which coordinates, plays more preferable braking effect.

Preferably, the outer wall of the brake scotch offers the 5th stopper slot, and the return unit is hooked together mutually for head and the tail And extension spring annular in shape, the extension spring is fastened in the 5th stopper slot of some brake scotch.

By using above-mentioned technical proposal, in braking reset, some brake scotch are inwardly carried out using the elastic force of return unit Draw in and reset, and the extension spring that return unit is hooked together using head and the tail so that the elastic force that each brake scotch is subject to is uniform, can realize some The synchronous reset of brake scotch, effectively prevent the polylith brake scotch in releasing of brake causes partial brake because restoring force is uneven Situation about watt also being contradicted with flower-drum occurs, and reduces the noise duration after brake.

Preferably, described one end for stopping system drum, which is offered, sets restraining position ring block in breaker slot, the breaker slot, described It is additionally provided with breaker slot and contains an iron hoop, the link gear is contained in the iron hoop, the iron hoop includes being connected to system Position-arresting disk on dynamic groove bottom land, the position-arresting disk is offered to be opened on the slot to make way housed for spacing ring, the inwall of the breaker slot Provided with the first non-slip texture, the second non-slip texture contradicted each other with the first non-slip texture is provided with the outer wall of the iron hoop..

By using above-mentioned technical proposal, the setting substitution system of stopping of iron hoop is roused carries out rubs mutually process with brake scotch, carries The service life of high flower-drum, and using the movement of limiting iron ring diametrically that mutually fastens of spacing ring and slot to make way, coordinates the The rotation of spacing iron hoop in the circumferential of contradicting each other of one non-slip texture and the second non-slip texture.

Preferably, clutch shaft bearing and second bearing, the hub spindle are separately installed with the floral disc and system drum of stopping It is arranged in respectively in clutch shaft bearing and second bearing.

By using above-mentioned technical proposal, caused sliding friction using first, second bearing between hub spindle and flower-drum It is changed into rolling friction, reduces relative wear between the two, improve service life.

In summary, the utility model has the advantages that：

1st, by brake scotch and link gear being housed in the flower-drum of integral type so that the whole structure of stopping of rising is more tight Gather；

2nd, the installation accuracy of hub spindle is improved by the abutting part set in the middle part of skeleton, and utilizes the first noise reduction opened up Noise when groove and the reduction braking of the second noise reduction groove, in outside by regarding the extension spring of the mutual hook of head and the tail as some brake scotch Return unit so that brake scotch reset when stress be more uniformly distributed, shorten braking after noise duration；

3rd, by spanner and the split type setting of rotation cam of braking, it is easy to dismounting, and using on outer cover plate and dust cap The 3rd stopper slot and the 4th stopper slot combine the axial movement for limiting brake spanner, and limit the maximum of brake spanner Rotational angle range so that more stable in braking.

Brief description of the drawings

Fig. 1 is the exploded perspective view of Bicycle expansion brake hub assembly in embodiment one；

Fig. 2 always pacifies into front view during mounted in vehicle frame for Bicycle expansion brake hub in embodiment one；

Fig. 3 is arranged on side view during vehicle frame for Bicycle expansion brake hub assembly in embodiment one；

Fig. 4 is the side view of flower-drum in embodiment one；

Fig. 5 is the sectional view of flower-drum in embodiment one；

Fig. 6 is the positive structural representation of the middle skeleton of embodiment one；

Fig. 7 is the structural representation at the middle skeleton back side of embodiment one；

Fig. 8 is the side view of the middle skeleton of embodiment one；

Fig. 9 is the structural representation of brake scotch in embodiment one；

Figure 10 is the front view of return unit in embodiment one；

Figure 11 is rotation cam and the decomposing schematic representation of brake spanner in embodiment one；

Figure 12 be in embodiment one brake spanner in outer cover plate and dust cap spacing schematic diagram between the two；

Figure 13 is outer cover plate and the schematic diagram after the installation of skeleton between the two in embodiment one；

Figure 14 is schematic diagram of the torsion spring between outer cover plate and brake spanner after installation in embodiment one；

Figure 15 is the schematic view of the mounting position in embodiment one between brake spanner and roller；

State diagram when Figure 16 is the total normally travel of Bicycle expansion brake hub in embodiment one；

State diagram when Figure 17 always brakes for Bicycle expansion brake hub in embodiment one；

Figure 18 is the fixation schematic diagram in embodiment two between outer cover plate and vehicle frame；

Figure 19 is the connection diagram of multistage flying wheel and flower-drum.

In figure：1st, skeleton；11st, chassis；12nd, limited block；13rd, regulating tank；14th, abutting part；141st, positioning hole；15th, connect Block；16th, the second noise reduction groove；17th, steady pin；18th, arcwall face；19th, the first noise reduction groove；2nd, brake scotch；21st, the 5th stopper slot；22、 Arc-shaped limit block；23rd, the 6th stopper slot；24th, spigot surface；3rd, rotation cam；31st, connecting portion；311st, the first projection；312nd, first Stopper slot；32nd, cam part；321st, cam；322nd, brake release groove；33rd, cascaded surface；4th, roller；5th, brake spanner；51st, even Connect disk；511st, mounting hole；512nd, the second projection；513rd, the second stopper slot；52nd, rotating turret；521st, fixing hole；522nd, line ball spiral shell Nail；523rd, locking nut；6th, return unit；61st, first hook；62nd, pintle；7th, flower-drum；71st, floral disc；711st, floral disc external screw thread；72nd, in Portion's connecting tube；73rd, system of stopping drum；731st, breaker slot；732nd, spacing ring；733rd, the first non-slip texture；734th, second boss；74th, bore Shape platform；75th, iron hoop；751st, position-arresting disk；752nd, slot to make way；753rd, the second non-slip texture；754th, first boss；76th, bearing is spacing Groove；8th, outer cover plate；81st, brake bracket；82nd, clip；83rd, line screw is crossed；84th, fixing groove；85th, the 3rd stopper slot；86th, spacing pressure Block；87th, fixed spring；88th, torsion spring；9th, dust cap；91st, lug boss；92nd, the 4th stopper slot；10th, hub spindle；10a, flange spiral shell It is female；10b, clamp nut；10c, the first pad；10d, sleeve pipe；10e, the second pad；10f, outer cover plate fixed cover；101st, first Bearing；102nd, second bearing；200th, chain stay；300th, brake cable；400th, vehicle frame；410th, fixed seat；411st, spacing socket； 500th, multistage flying wheel；510th, flywheel internal thread.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment one

Referring to Fig. 1, a kind of Bicycle expansion brake hub is total, includes the flower-drum 7 and the wheel hub that is arranged in flower-drum 7 of integral type Relative rotation occurs relative to hub spindle 10 for axle 10, flower-drum 7.

With reference to Fig. 1, Fig. 4 and Fig. 5, flower-drum 7 is made up of aluminium or iron, it is preferred to use aluminium is made to reduce overall weight, its The middle part connecting tube 72 of floral disc 71 including both sides, stop both drum 73 processed and connection.Floral disc 71 is respectively provided with convex with drum 73 processed of stopping Edge is used to offer breaker slot 731 on the connection of spoke, the end face in drum 73 processed of stopping, and iron hoop is provided with breaker slot 731 75, the bottom land middle part of breaker slot 731 is provided with the spacing ring 732 of projection, and the outer wall of spacing ring 732 is provided with spline；Iron hoop 75 Including the position-arresting disk 751 abutted against with the bottom land of breaker slot 731, the middle part of position-arresting disk 751 is offered for allowing that spacing ring 732 is housed Position groove 752；First non-slip texture 733 on the inwall of breaker slot 731, iron hoop 75 is provided with the second non-slip texture 753 on its external wall, When iron hoop 75 is installed in breaker slot 731, the first non-slip texture 733 and the second non-slip texture 753 contradict each other and cause iron hoop 75 It can obtain spacing in the circumferential.In addition the thickness of position-arresting disk 751 is equal to the thickness of spacing ring 732 and caused after the installation of iron hoop 75 in system Male and fomale(M＆F) will not be formed in dynamic groove 731.

In addition, also including axial limiting portion between iron hoop 75 and drum 73 processed of stopping, the axial limiting portion, which includes, is arranged on iron First boss 754 on the outer wall of ring 75 and the second boss 734 being arranged on the side wall of breaker slot 731, second boss 734 is just On the upper surface for being fastened on first boss 754 so that iron hoop 75 is able to spacing in the axial direction.Iron hoop 75 enters at overheat in a pre-installation Reason is improved wearability and is installed to using the mode expanded with heat and contract with cold and stopped in drum 73 processed.

Brake apparatus is installed in iron hoop 75, if the brake apparatus includes the uniform brake scotch 2 of some circumferences and set The link gear at the dry middle part of brake scotch 2.Link gear includes a skeleton 1, some rollers 4, body rotation cam 3 and brake spanner 5。

Referring to Fig. 6 and Fig. 7, skeleton 1 is made up of aluminium alloy, includes the chassis 11 of a circle and is arranged on chassis 11 1 Some limited blocks 12 on side end face, the first noise reduction groove 19 is offered in limited block 12 departing from raised end face.Chassis 11 Middle part have a through hole, some limited blocks 12 around the through hole it is uniform in the circumferential, and between adjacent two limited block 12 formed One regulating tank 13 for housing roller 4, the certain radial distance of directional sliding in regulating tank 13 of roller 4.

An abutting part 14 in a ring is provided with the central through hole on chassis 11, the abutting part 14 is by being distributed on periphery wall On contiguous block 15 be connected with chassis 11, the center of abutting part 14 offers the positioning hole 141 with the coaxial line of chassis 11, connection The quantity of block 15 is just identical with the quantity of limited block 12 and set location is corresponding, and one the is formed between adjacent two contiguous block 15 Two noise reduction grooves 16.Wherein contiguous block 15 is set to arcwall face 18 in the side end face departing from limited block 12, the arcwall face 18 While being connected with the end face of abutting part 14.In addition it is additionally provided with steady pin 17 on the end face of a limited block 12 wherein.

Referring to Fig. 8, the integral thickness of abutting part 14 is greater than the thickness on chassis 11, and departing from being provided with the one of limited block 12 End face will above chassis 11 end face, between the two with height difference H, the height difference H is between 1 ~ 2mm.

Referring to Figure 11, rotation cam 3 is generally cylindrical, and it includes the connecting portion 31 being distributed up and down and cam part 32, its Middle connecting portion 31 is used to be connected with brake spanner 5, and cam part 32 is used to be driven, and both junctions form a cascaded surface 33.Described connecting portion 31 includes the first some projection 311 for being distributed on the periphery wall of rotation cam 3 and is formed at two the The first stopper slot 312 between one projection 311；Cam part 32 includes the cam 321 being equally distributed on the periphery wall of rotation cam 3 And the brake release groove 322 between two cams 321 is formed at, wherein both setting positions of the first cam 321 and cam 321 Put, and the first stopper slot 312 interpenetrates with brake release groove 322.

The spanner 5 that brakes includes terminal pad 51 and rotating turret 52, and terminal pad 51 offers one and is available for rotation cam 3 to pass through Mounting hole 511, be evenly equipped with the inwall of mounting hole 511 with the second projection of quantity identical 512 of the first projection 311, it is adjacent The second stopper slot 513 is formed between two second projections 512, the connecting portion 31 of rotation cam 3 is housed in mounting hole 511 during installation It is interior, and brake spanner 5 lower surface contradict on cascaded surface 33, while some second projections 512 and second in mounting hole 511 In the first projection 311 being fastened on connecting portion 31 and the first stopper slot 312 that stopper slot 513 interlocks, turn of brake spanner 5 It is dynamic to drive the rotation of rotation cam 3 simultaneously.

The end of rotating turret 52 is equipped with a line pressing bolt 522 and the locking screw being threadedly coupled with line pressing bolt 522 Mother 523, and offer a fixing hole 521 on the connection end of rotating turret 52 and terminal pad 51.

Referring to Fig. 9 and Figure 10, all brake scotch 2, which are enclosed, can form an annulus, and be opened up on the outer wall of each brake scotch 2 There is the 5th stopper slot 21, some brake scotch 2 have to contract all the time by being embedded the return unit 6 in the 5th stopper slot 21 Movement tendency.

The return unit 6 has the extension spring of a first pintle 62 of hook 61 and one from two ends respectively, passes through both mutual hooks An annulus is encircled into, extension spring can change different rigidity according to different automobile types.The groove of the 5th stopper slot 21 on every piece of brake scotch 2 Bottom is curved, and it just matches with bottom land after extension spring is fastened on the 5th stopper slot 21, in addition the groove of the 5th stopper slot 21 It is greater than or equal to the diameter of extension spring deeply so that can not be spun off after extension spring engaging out of the 5th stopper slot 21.

The arc-shaped limit block 22 of two certain angular intervals is additionally provided with the intrados of brake scotch 2, is limited along each arc The axial direction of position block 22 offers the 6th stopper slot 23 of insertion, and the left and right sides of the 6th stopper slot 23 is oriented to by chamfering formation Face 24.

Referring to Fig. 1, the openend of breaker slot 731 is closed for 8 by an outer cover plate, and above-mentioned brake apparatus is consolidated Fixed, one end of hub spindle 10 is tentatively compressed through outer cover plate 8 by outer cover plate fixed cover 10f, in the side of outer cover plate 8 A dust cap 9 is additionally provided with, one end of same hub spindle 10 passes through the dust cap 9, using two clamp nut 10b to dust cap 9 are fixed while outer cover plate 8 is fixed.

Referring to Fig. 6 and Figure 12, fixing groove 84 is offered on outer cover plate 8, the fixing groove 84 is available for steady pin 17 to pass through, in addition The 3rd stopper slot 85 is further opened with outer cover plate 8, the 3rd stopper slot 85 causes rotating turret 52 to be obtained through and rotation-limited The anglec of rotation of frame 52.There is dust cap 9 lug boss 91, the lug boss 91 to form the 4th stopper slot after coordinating with outer cover plate 8 92, the 4th stopper slot 92 can allow rotating turret 52 to pass, and the anglec of rotation of further rotation-limited frame 52.

Referring to Figure 13, three uniform spacing briquettings 86 are also convexed to form by the convex side of skeleton 1 that presses on outer cover plate 8, Some spacing briquettings 86 are connected on the limited block 12 of skeleton 1 with the radial motion of spacing skeleton 1 respectively.

Referring to Figure 11, Figure 12 and Figure 14, fixed spring 87 is additionally provided with steady pin 17, the one end of fixation spring 87 is twined It is wound on steady pin 17, the other end is hooked in fixing groove 84, and then make it that skeleton 1 is fixed with outer cover plate 8.Hub spindle 10 On be additionally provided with torsion spring 88, one end of the torsion spring 88 is hooked together in the 3rd stopper slot 85, and the other end is located in consolidating for rotating turret 52 Determine in hole 521 so that rotating turret 52 has the movement tendency toward brake release side all the time.

Referring to Fig. 1 and Fig. 5, bearing stopper slot 76, each axle are offered on the axis hole of floral disc 71 and drum 73 processed of stopping Hold and clutch shaft bearing 101 and second bearing 102 are separately installed with stopper slot 76, hub spindle 10 is arranged in two bearings successively, Being abutted on the end face of clutch shaft bearing 101 has the second pad, and spacing to clutch shaft bearing 101 also with two clamp nut 10b, Sleeve pipe 10d is also set up between two clamp nut 10b to adjust two clamp nut 10b relative distance.

Referring to Fig. 1 to Fig. 3, whole assembly is fixed on vehicle frame 400 by the flange nut 10a at the two ends of hub spindle 10, and Fixing when improving fixed using the first pad abutted against with vehicle frame 400, outer cover plate 8 has a brake bracket 81, the braking One end of frame 81 is provided with a clip 82, and the clip 82 is fastened in chain stay 200 so that whole assembly fixes more firm Lean on, be also equipped with one on brake bracket 81 in addition and cross line screw 83, brake cable 300 may pass through this and cross line screw 83 and rotating turret 52 connections.

Referring to Fig. 9, Figure 11 and Figure 15, the part terminal pad 51 on brake spanner 5 is covered in the upper end surface of roller 4, makes Roller 4 be able in the axial direction it is spacing.Simultaneously in normal driving process the outer wall of roller 4 it is spacing in the 6th stopper slot 23 and In brake release groove 322 so that roller 4 is able to spacing in the circumferential, and is deposited between the inwall of some brake scotch 2 and iron hoop 75 In spacing.

With reference to Figure 16 and Figure 17, when braking, brake cable 300 is pulled while artificial pulling brake handle, is braked Line 300 drives brake spanner 5 to be rotated, and brake spanner 5 can drive rotation cam 3 to be rotated when rotating, to rotation cam 3 When rotating to an angle, some cams 321 extrude the roller 4 of correspondence position so that if roller 4 is gradually extended out while promoting drying Dynamic watt 2 distendings, rotation cam 3 continues to rotate some rollers 4 radially sliding apart from constantly increase, brake scotch in regulating tank 13 2 distending amplitudes are incrementally increased, and are braked when brake scotch 2 is inconsistent with the madial wall of iron hoop 75 that is in rotation process, Brake process is completed until flower-drum 7 stops operating；After brake handle unclamps, brake spanner 5 can reset in the effect of torsion spring 88, Rotation cam 3 is turned round, and some brake scotch 2 inside retracted for clearance and promote roller 4 to reset in the presence of extension spring, roller 4 It is last and spacing arrived in brake release groove 322.

Embodiment two

Referring to Figure 18, the fixed form of the outer cover plate 8 of embodiment one and vehicle frame 400 is different from, passes through fastening on vehicle frame 400 Part is provided with fixed seat 410, and the brake bracket 81 opened up on one end of fixed seat 410 on limited location socket 411, outer cover plate 8 can It is inserted into spacing socket 411 and then realizes that circumferentially rotating for outer cover plate 8 is spacing, the fixed form operation is relatively simple.

Embodiment three

Referring to Figure 19, whole expansion brake hub assembly also includes multistage flying wheel 500, and the middle part of multistage flying wheel 500 offers winged Internal thread 510 is taken turns, floral disc external screw thread 711 is provided with the end of floral disc 71, multistage flying wheel 500 leads to when being fixed with flower-drum 7 Thread connecting mode is crossed to be fixed.

This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.

Claims (10)

1. a kind of Bicycle expansion brake hub assembly, it is characterised in that including：

Flower-drum（7）, by floral disc（71）, middle part connecting tube（72）And system drum of stopping（73）Integral type is constituted；

Some brake scotch（2）, house and be distributed in the system drum of stopping（73）It is interior, it may move and roused with the system of stopping（73）It is inconsistent；

Hub spindle（10）, through the flower-drum（7）And can be with flower-drum（7）Relatively rotate, the hub spindle（10）Two ends The assembly is fixed on by vehicle frame by fastener（400）On；

Link gear, is equally contained in the system drum of stopping（73）It is interior, and may act on some brake scotch（2）Away from hub spindle （10）The radial distance of axis；

Outer cover plate（8）, it is covered in system drum of stopping（73）Side be used for the brake scotch（2）And link gear is limited in the system of stopping Drum（73）It is interior；

Return unit（6）, make some brake scotch（2）All the time with synchronous to hub spindle（10）The motion that axis direction is drawn in becomes Gesture.

2. Bicycle expansion brake hub assembly according to claim 1, it is characterised in that the link gear includes skeleton （1）, be distributed on skeleton（1）On some rollers（4）, rotation cam（3）And brake spanner（5）, the rotation cam（3）Can Control some rollers（4）Leave hub spindle（10）Radial displacement, the roller occur for axis（4）With brake scotch（2）Inner side begin Last phase is contradicted, wherein the spanner that brakes（5）With rotation cam（3）Connection, when to brake spanner（5）Described in during the brake force that exerts a force Brake scotch（2）With system drum of stopping（73）It is inconsistent.

3. Bicycle expansion brake hub assembly according to claim 2, it is characterised in that the skeleton（1）Including chassis （11）And located at chassis（11）On one side end face and circumferential uniform limited block（12）, adjacent two limited block（12）Between formed For housing roller（4）Regulating tank（13）, departing from limited block（12）The first noise reduction groove is offered on raised end face （19）, the chassis（11）Middle part offers in through hole, the through hole and is provided with abutting part（14）, the rotation cam（3）If Put in abutting part（14）On, the abutting part（14）Middle part offer and supply hub spindle（10）The positioning hole worn（141）.

4. Bicycle expansion brake hub assembly according to claim 3, it is characterised in that the abutting part（14）With chassis （11）Between pass through the circumferentially uniform contiguous block of polylith（15）It is connected, adjacent two contiguous block（15）Between form the second noise reduction groove （16）；The contiguous block（15）Corresponding to limited block（12）Position, and one end and limited block（12）Connection, the other end is with abutting Portion（14）It is connected, wherein departing from limited block（12）End face be set to arcwall face（18）.

5. Bicycle expansion brake hub assembly according to claim 2, it is characterised in that the rotation cam（3）Including upper The connecting portion of lower distribution（31）And cam part（32）, the connecting portion（31）Including circumferential uniform the first projection on the outer wall （311）, adjacent two first projection（311）Between form the first stopper slot（312）, the brake spanner（5）Including terminal pad （51）And rotating turret（52）, the terminal pad（51）Offer and supply connecting portion（31）Accommodating mounting hole（511）, it is described to install Hole（511）Inwall on be circumferentially evenly equipped with and the first projection（311）And first stopper slot（312）The second projection staggeredly engaged （512）And second stopper slot（513）.

6. Bicycle expansion brake hub assembly according to claim 5, it is characterised in that the connecting portion（31）With cam part （32）Between have cascaded surface（33）, the terminal pad（51）It is connected to described cascaded surface（33）Go up and be partly covered in some Roller（4）Upper surface, wherein the cam part（32）Rotation cam is distributed on including circumferential（3）Cam on outer wall（321） And it is formed at two adjacent cams（321）Between brake release groove（322）.

7. Bicycle expansion brake hub assembly according to claim 5, it is characterised in that the outer cover plate（8）On also open up Supply rotating turret（52）3rd stopper slot of rotation（85）, the brake spanner（5）On be additionally provided with all the time have toward release system The torsion spring of power side direction movement tendency（88）；The outer cover plate（8）On be further fixed on dust cap（9）, the dust cap（9） With lug boss（91）, the lug boss（91）With outer cover plate（8）Composition formation supplies rotating turret（52）Part is passed and spacing turn Moving frame（52）4th stopper slot of the anglec of rotation（92）.

8. Bicycle expansion brake hub assembly according to claim 1, it is characterised in that the brake scotch（2）Outer wall open Provided with the 5th stopper slot（21）, the return unit（6）Hooked together mutually and extension spring annular in shape for head and the tail, if the extension spring is fastened on Dry brake scotch（2）The 5th stopper slot（21）It is interior.

9. Bicycle expansion brake hub assembly according to claim 1, it is characterised in that the system drum of stopping（73）One end open Provided with breaker slot（731）, the breaker slot（731）Interior setting restraining position ring block（732）, the breaker slot（731）Inside it is additionally provided with Contain an iron hoop（75）, the link gear is contained in the iron hoop（75）It is interior, the iron hoop（75）Including being connected to breaker slot （731）Position-arresting disk on bottom land（751）, the position-arresting disk（751）Offer and supply spacing ring（732）Accommodating slot to make way（752）, The breaker slot（731）Inwall on offer the first non-slip texture（733）, the iron hoop（75）Outer wall on be provided with and the One non-slip texture（733）The second non-slip texture contradicted each other（753）.

10. Bicycle expansion brake hub assembly according to claim 1, it is characterised in that the floral disc（71）With system drum of stopping （73）Inside it is separately installed with clutch shaft bearing（101）With second bearing（102）, the hub spindle（10）Clutch shaft bearing is arranged in respectively （101）With second bearing（102）It is interior.