TWM440895U - Bicycle hub assembly and ratchet whell - Google Patents

Abstract

A bicycle hub includesanaxle, a ratchet wheel, a internal gear wheel, a hub, a clutch, and an second elastic spring. The ratchet wheel is disposed around the axle, and the ratchet wheel includes at least onechain wheel, a plurality of troughs, a plurality of paws, and a plurality of first springs. The chain wheel is placed at one side of the ratchet wheel. The trough is placed at another side of the ratchet wheel. The trough has a first sub-trough and a second sub-trough. The paw has a first end and a second end. The first spring has a first end and a second end. The internal gear ring surrounds these paws, and a plurality of gears is placed at internal surface of the internal gear ring. A hub is disposed around the axle. The clutch has an axial hole and a cam, and the cam has multiple protruding parts. The second spring is disposed around the axle.

Description

M440895 101.August 21st, Shuttle is replacing page 5. New description: [New technical field] [0001] This creation is about a flower hub, and especially about a simple design and can be idling. In this state, the pawl and the inner ring are not allowed to produce a "click, click" sound and a flower hub that does not drive the pedal. [Prior Art]

[0002] This creation relates to a bicycle, and more particularly to a bicycle for performance. In the 1970s, a bicycle (motocross) sport was launched in the United States, and bicycles used for such sports were called BMX bicycles. BMX bicycles are relatively small, tires are thick, and the venue of the competition is very similar to that used for off-road motorcycles. The sport quickly became popular among young people. However, in the mid-1980s, most young people were deeply influenced by the skateboarding culture. They felt that the competition was too single in the venue, so a young man named B0BHAR0 was around. With the pedals mounted on the wheels, players can use these pedals to make many new fancy styles. As a result, people began to take BMX bikes to the ground, skateboarding venues, and play more fancy than skateboards, jump higher and more exciting, and the name of this bike has changed from BMX bike to BMX freestyle. bicycle. [0003] Please refer to FIG. 1. FIG. 1 illustrates a BMX freestyle bicycle on the market. The bicycle 10 includes a frame 11, a rear wheel 14, a front wheel 14' and a transmission system 15, wherein the front wheel 14' and the rear wheel 14 are respectively assembled to the suspension frame 12 and the rear suspension frame 13 before the frame 11. The transmission system 15 includes a pedal 16, a first key wheel 17, a key bar 18, and a flower valley 100. The user drives the first sprocket 17 to rotate by stepping on the pedal 16, the 1012086# single number flat 01 Page 3 of 27 Page 1013320187-0 M440895 101. August 21st 倐 Replacement page The rotation of a sprocket 17 will drive the chain 18 to rotate 'and the rotation of the chain 18 causes the hub body 120 to rotate the rear wheel 14 'Push the bicycle forward. Further, the 'pedal 19 and the pedal 19' are respectively sleeved on the rear wheel 14 and the front wheel 14' for the user to perform a fancy performance. 2 is a flower hub for a BMX freestyle bicycle. The hub 100 is mainly composed of a spindle 110, a hub body 120, a ratchet 130, an internal ring gear 140, and a plurality of bearings 150. Composition. The hub body 120 and the ratchet wheel 130 are sleeved on the mandrel 110, and the hub body 120 and the ratchet wheel 130 are both connected to the mandrel 110 by a bearing 150. Please refer to Figure 2 and Figure 3 together. Figure 3 shows a side view of the ratchet and internal ring. The ratchet wheel 130 includes a second key wheel 132, a plurality of pawls 134, and a spring 13 6 that are mounted on the pawl groove 138 of the ratchet wheel 130, for example, in a circumferential manner and at equal intervals. It is fixed by a spring 136. In addition, please refer to FIG. 4, which is a perspective view of the hub body and the inner ring. The inner ring gear 140 is provided with a first right-hand thread 142, and the inner surface of the hub body 120 is provided with a second right-hand thread 122, and the first right-hand thread 142 and the second right-hand thread 122 are matched with each other to The clockwise direction g is screwed into the inner ring gear 140 to secure the inner ring gear 140. The flower is in the body 120. [0005] As can be seen from FIG. 3 and FIG. 4, when the chain 18 (FIG. 1) pulls the second sprocket 132 (FIG. 2) to rotate in a clockwise direction, the ratchet 13 is rotated, and the pawl 134 is rotated. The internal tooth ring 140 is engaged with the inner tooth 144 of the inner ring gear 140, and when the inner ring gear 140 rotates, the hub body 120 is also rotated to advance the bicycle 1 . When the chain 18 pulls the second sprocket 132 to rotate in the counterclockwise direction, the 1012 on the ratchet wheel 13_the order number A 〇 101 page 4 / total 27 pages 1013320187-0 M440895 101 August 2011 The replacement page pawl 134 will slide over the inner teeth 144 of the inner ring gear 140, and the hub body 120 will not be driven. This condition is called "idle". In the idling state, when the pawl 134 slides over the inner tooth 144 of the inner ring gear 140, a collision sound of "click, click" occurs between the pawl 134 and the inner tooth 144. [0006] Occasionally, when a performer performs on a bicycle 10, the bicycle 10 is allowed to perform an upright movement while the front wheel 14' is in contact with the ground and the rear wheel 14 is individually idling. Referring to FIG. 3, when the rear wheel 14 is idling forward, that is, the inner ring gear 140 is rotated in the clockwise direction, the inner teeth 144 of the inner ring gear 140 are smoothly passed over the pawl 134, and the rear wheel 14 is When idling backward, that is, the inner ring gear 140 will rotate in the counterclockwise direction, the inner teeth 144 of the inner ring gear 140 will engage with the pawl 134, and the ratchet wheel 130 will be rotated backward, and the ratchet 130 will Pulling the chain 18 causes the second sprocket 132 to drive the pedal 16 to rotate. However, the rotation of the pedal 16 may injure the performer [0007] The Republic of China Patent Publication No. TW201 1 1 31 67 proposes a normally closed type

The free coaster hub allows the rear wheels to idling without pedaling. The normally closed bicycle rear hub structure comprises: a toothed disc sleeve is recessed with a plurality of control slots at an annular periphery of the ratchet seat, and a ratchet member is sleeved on the ratchet seat and corresponding to the control slot And a receiving chamber is provided, wherein the receiving chamber is provided with a ratchet and a rolling member, and is arranged between the control slot and the ratchet with a rolling member, and the ratchet member has a convex protrusion in the axial direction. The damper member is formed by combining the concave groove and the protrusion of the ratchet member, and the flower hub shell is formed with an accommodating space, and the ratchet member and the damper member are covered by the accommodating space, and the accommodating member is further disposed. The space is combined with a helical ring, and the helical ring is disposed at the outer end of the ratchet to form a toothable shape, by means of the upper 10120866# part number application 01 page 5 / total 27 pages 1013320187-0 M440895 101 years 08 On the 21st of the month, the shuttle is replacing the page structure, and the rolling elements can cooperate with the control groove in a rolling manner to produce an outward struting effect, thereby making the ratcheting motion smoother and reducing the wear caused by the use.俾 to increase their usefulness. [0008] Moreover, in TW201 1 131 67, since the ratchet is limited by the rolling member and the damper member in the accommodation chamber, and the opening and closing operations are achieved by the resistance of the damper member, the normal state can be maintained. All of them can be closed, that is, they can have the effect of silent linkage, and the pedal can be driven without being driven by the rear wheel. However, the conventional technology TW20111 31 67 can achieve the above-mentioned purpose, but due to the complicated design and the large number of components, this will increase the development cost of the bicycle hub, which in turn leads to an increase in the overall cost of the bicycle. [New content] [0009] The main purpose of this creation is to provide a flower hub, which is simple in design and construction, and can be used in the idling state without causing the click and the inner ring to collide. Sound and the hub that does not drive the pedal. [0010] According to the above and other objects, the present invention provides a flower hub, which is mounted on a bicycle. The 4b hub includes a mandrel, a ratchet wheel, an internal tooth ring, a flower hub body, a clutch block and a a second spring, wherein the ratchet is sleeved on the mandrel, the ratchet includes at least one sprocket, a groove, a plurality of pawls and a plurality of first springs. The sprocket is disposed on one side of the ratchet, and the groove is disposed on the other side of the ratchet, the groove has a first groove and a second groove, and the first groove and the second time The shape of the groove is a circular arc shape, and a bottom surface is formed between the first groove and the second groove. In addition, the pawl has a first end and a second end, the first end of the pawl is disposed in the first groove and the plurality of first springs, and the first spring has a first number to be 01 Page 6 of 27 Page 1013320187-0 M440895 101. On August 21st, the shuttle is replacing one end of the page with a second end. The first end of the first spring is installed in the second groove, and the first spring The second end exerts an elastic force on the pawl. [0011] The inner ring gear surrounds the pawls, and the inner surface of the inner ring gear is provided with a plurality of internal teeth, and the inner teeth are adapted to abut the second end of the pawl, and the hub body is a sleeve Provided on the mandrel, the clutch block has a shaft hole, the clutch block is sleeved on the mandrel by the shaft hole, and the clutch block has a cam, and the cam has a plurality of protrusions, wherein the protrusion block corresponds to the pawl And the second spring is sleeved on the mandrel, and one end of the second spring exerts an elastic force on the splicing block to make the clutch block abut the ratchet. Wherein, when the ratchet rotates relative to the clutch in a first direction, the cam of the cam abuts the pawl, and the second end of the pawl protrudes out of the groove, and when the ratchet is opposite to the clutch When rotating in a second direction, the cam of the cam is separated from the pawl, and the pawl is received in the groove by the elastic force exerted by the first spring, wherein the first direction is opposite to the second direction. [0013] In the flower hub described above, the first groove and the second groove are symmetrical to each other. [0014] In the above flower hub, the pawl includes a first claw piece, a second claw piece, and a connecting surface, and the connecting surface is connected between the first claw piece and the second claw piece, and the first spring The second end is pressed against the connecting surface. When the ratchet rotates relative to the clutch in the second direction, the cam of the cam is separated from the pawl, and the pawl is received in the groove by the elastic force applied by the first spring. Fitted in the groove and attached to the bottom surface. [0015] In the above flower hub, a ring is further included, and the material of the ring is 10120866^^'^^ A〇101 page 7/total 27 pages 1013320187-0 M440895 101 August 101 Replacing the sheet metal, wherein the collar is embedded in the shaft hole of the clutch block and sleeved in the mandrel 实施 [Embodiment]

[0016] Please refer to FIG. 5 and FIG. 6A. FIG. 5 is a perspective view of a flower hub of the present embodiment, and FIG. 6A is a schematic diagram of a ratchet of the embodiment. A flower hub 200 is mounted on the bicycle 10. The flower hub 200 includes a mandrel 210, a flower body 220, a ratchet 230, an inner ring 240, a clutch 250, and a second spring 2 60. The hub body 220 is sleeved on the mandrel 210. The ratchet 230 is sleeved on the mandrel 210. The ratchet 230 includes a sprocket 232, a plurality of grooves 234, a plurality of pawls 236, and a plurality of first springs 238, wherein the sprocket 232 is disposed on the other of the ratchets 230. The trench 234 has a first sub-trench 234a and a second sub-trench 234b, and the first-order trench 234a and the second-order trench 234b have a circular arc shape. In the present embodiment, the first trench 234a and the second trench 234b are symmetrical to each other, and a first bottom surface 234c is formed between the first trench 234a and the second trench 234b. [0017] Each of the plurality of pawls 236 has a first end 236a and a second end 236b, and the first end 236a of the pawl 236 is disposed in the first groove 234a, and the plurality of Each of the magazines 238 has a first end 238a and a second end 238b, and the first end 238a of the first spring 238 is disposed in the second groove 234b, and the second end 238b of the first spring 238 is applied. An elastic force is applied to a pawl 236. In addition, the inner ring 240 is sleeved on the mandrel 210 and surrounds the pawl 236. The inner surface of the inner ring 240 is convexly provided with a plurality of inner teeth 242, and the inner teeth 242 are adapted to be the first of the pawls 236. The two ends 236b are abutted. Please refer to FIG. 6B. FIG. 6B is a schematic diagram of a pawl 10120866^^^ A〇101, 8th page, a total of 27 pages, 1013320187-0, M440895 _101. The first claw piece 236c, the second claw piece 236d and a connecting surface 236e are connected, and the connecting surface 236e is connected between the second claw piece 236d of the first claw piece 236cA, and the second end 238b of the first magazine 238 is abutted. The pressure connector connection surface 236e. [0018] Please refer to FIG. 5 and FIG. 7. FIG. 7 is a schematic diagram of a clutch block according to the embodiment. The clutch block 250 has a shaft hole 252. The clutch block 250 is sleeved in the center by the shaft hole 252. On the shaft 210' and the clutch block 250 has a cam 254 having a plurality of lugs 256, wherein the lugs 256^ correspond to the pawls 236. In addition, the flower 200 further includes a second spring 260. The second spring 260 is also sleeved on the mandrel 210. One end of the second spring 260 is biased on the clutch block 250 so that the clutch block 250 is tight. Paste on the ratchet 230. In the present embodiment, the hub 200 further includes a collar 270, and the collar 270 is made of metal, for example, and the collar 270 is embedded in the shaft hole 252 of the clutch block 250 and sleeved in the mandrel 210.

[0019] Please refer to FIG. 8. FIG. 8 is a schematic diagram of a ratchet and a clutch block according to the embodiment. When the ratchet 230 rotates relative to the clutch 250 in a first direction A, the projection 256 of the cam 254 abuts the pawl 236, and the second end 236b of the pawl 236 protrudes beyond the groove 234. When the ratchet wheel 236 rotates relative to the clutch block 250 in a second direction B, the cam 256 of the cam 254 is separated from the pawl 236, and the pawl 236 is received in the groove by the elastic force exerted by the first spring 238. The groove 234 is fitted into the bottom surface 236c, wherein the first direction A is opposite to the second direction B. [0020] When the chain 18 on the bicycle 10 (shown in FIG. 1) pulls the second sprocket 232 to rotate in a clockwise direction (the first direction A in the embodiment), the ratchet 2 30 will be relatively clutched. 2 5 0 edge. The first direction A is rotated, at this time the cam 1013320187-0 10120866 production order number A〇101 page 9 / total 27 pages M440895 101 August 21 revised replacement page 254 bump 256 and spine The claw 236 abuts, and the second end 236b of the pawl 236 protrudes out of the groove 234 and abuts against one side of the inner tooth 242, thereby driving the inner ring gear 240 to rotate "when the inner ring gear 240 rotates" The belt is rotated relative to the body 220 to advance the bicycle 10. [〇〇21] However, when the chain 18 pulls the second sprocket 232 to rotate in the counterclockwise direction (the second direction B described in this embodiment), the ratchet 236 will be caused to be along the second direction B with respect to the clutch 250. When the rotation is performed, the projection 256 of the cam 254 is separated from the pawl 236, and the pawl 236 is received in the groove 234 by the elastic force applied by the first spring 238 and is fitted to the bottom surface 23 6c. Since the pawl 236 is housed in the groove 234, it does not come into contact with the internal teeth 242 on the inner ring 240, so that a collision sound of "snap and squeak" does not occur. [0022] In addition, when the rear wheel 14 is idling backward and the inner ring gear 240 is rotated in the counterclockwise direction, since the pawl is already accommodated in the groove 234, the inner ring 240 is attached. The internal teeth 242 are not in contact with the pawl 236. Therefore, the ratchet 230 and the chain 18 will not be driven or the pedal 16 will be driven, so there is no need to worry that the rotation of the pedal 16 may damage the performer's reading. Moreover, compared with the prior art TW20 1 1 1 31 67, due to the simple construction of the hub of the present invention, the bicycle hub of the present invention is easy to manufacture and competitively priced. ^The above-mentioned implementation shot, the number of flowers 2 lions is _ kind of normally closed bicycle rear flower valley structure' but by replacing the first magazine 238 with the first spring 338 as shown in Fig. 9, Huayi 200 can be From the normally closed bicycle, the Huayi structure is transformed into a very closed bicycle (n〇rmal cassette hub). Moreover, the difference between the first spring 338 and the first spring 238 of the 10120866 production number _1 page 10 / 271 1013320187-0 M440895 101 August 101 nuclear replacement page is: in Figure 6, by the The spring 238 is biased to receive the pawl 236 in the groove 234, and in FIG. 9, one end of the pawl 236 is pushed out of the groove 234 by the elastic force of the first spring 338. Since the type of the first spring can be changed, the hub 200 can be changed between the normally closed bicycle rear hub structure and the very closed bicycle rear hub structure, thereby increasing the flexibility in manufacturing. The present invention is described above by way of example, and is not intended to limit the scope of the patent claims claimed herein. The scope of patent protection is subject to the scope of the patent application and its equivalent fields. Any changes or modifications made by those skilled in the art without departing from the spirit or scope of this patent are subject to the equivalent changes or designs made in the spirit of this creation and should be included in the scope of the patent application below. Inside. [Simple Description of the Drawings] [0025] Figure 1 shows a BMX freestyle bicycle on the market. Figure 2 illustrates a hub for the BMX freestyle bicycle of Figure 1.

3 is a side view of the ratchet and inner ring of FIG. 2. 4 is a perspective view of the hub body and the inner ring of FIG. 2. FIG. 5 is an exploded view of a flower hub of the embodiment. FIG. 6A is a schematic diagram of a ratchet of the embodiment. FIG. 6B is a schematic view of a pawl of the embodiment. FIG. 7 is a schematic diagram of a clutch block of the embodiment. FIG. 8 is a schematic diagram showing the operation of a ratchet and a clutch block according to the embodiment. FIG. 9 is a schematic view showing the operation of the first spring and the pawl of the present embodiment. 1) 12{) 866f single number A0101 page 11 / total 27 pages 1013320187-0 M440895 The shuttle is being replaced on August 21, 101 Page [Main Component Symbol Description] [0026] 1 0 : Bicycle 11 : Frame 1 2 : Front Suspension 1 3 : Rear Suspension 14 : Rear Wheel 14' : Front Wheel 15 : Transmission System 16 : Pedal

17: First sprocket 18: Chain [0027] 19, 19': Pedal 100: Flower hub 110: Mandrel

120: hub body 122: second right-hand thread 130: ratchet 132: second sprocket 134: pawl 136: spring 140: inner ring gear 142: first right-hand thread 144: internal tooth 1 50: bearing [0028 ] A: First direction 10120866^^ A〇101 Page 12/Total 27 Page 1013320187-0 M440895

[0029] B: second direction [0030] 200: ί Baogu 210: mandrel 220: 'Valley body 230: ratchet [0031] 232: sprocket [0032] 234: groove [0033] 234a: first groove Slot [0034] 234b: second groove [0035] 234c: bottom surface [0036] 236: pawl [0037] 236a: first end [0038] 236b: second end [0039] 236c: first claw piece [ 0040] 236d: second claw piece [0041] 236e: connection surface [0042] 238 ' 338 : first spring [0043] 240 : internal ring gear [0044] 242 : internal tooth 250 : clutch block [0045] 252 : shaft Hole 101 years. August 21st Misplaced replacement page 10120866^^^^ A〇101 ^ 13 1 7 ^ 27 1 1013320187-0 M440895 101 years old on August 21st [0046] 254: Cam [0047] 256 : Bump [0048] 260: Second spring [0049] 270: Collar

1〇12〇86# Single Thief A〇101 Page 14 of 27 1013320187-0

Claims (1)

M440895 101 years. August 21st revised replacement page six, Φ straight brake chrome: /, rw/^i, ν 'Φ -rv-> iti 1. A flower hub, installed on a bicycle, the The flower valley includes: a mandrel; a ratchet wheel disposed on the mandrel, the ratchet comprising: at least one sprocket disposed on one side of the ratchet; and a plurality of grooves disposed on the other side of the ratchet The trench has a first trench and a second trench, and the first trench and the second trench have a circular arc shape, and the first trench and the second trench a bottom surface between the secondary grooves; a plurality of pawls having a first end and a second end, the first end of the pawl being mounted in the first groove; and a plurality of a first spring having a first end and a second end, the first end of the first spring being disposed in the second sub-groove, and the second end of the first spring applying an elastic force On the pawl; an internal toothed ring surrounding the pawl, the inner surface of the inner ring is provided with a plurality of internal teeth, and the internal tooth is adapted to abut the second end of the pawl; flower a body that is sleeved on the mandrel; a clutch block having a shaft hole, the clutch block is sleeved on the mandrel by the shaft hole, and the clutch block has a cam having a plurality of bumps The yoke block corresponds to the pawl; and a second spring is sleeved on the mandrel, and one end of the second spring applies an elastic force to the clutch block to make the clutch block tight Attaching the ratchet; wherein when the ratchet rotates in a first direction relative to the clutch block, the protrusion of the cam abuts the pawl, and the second end of the pawl protrudes from the groove Outside the slot, when the ratchet rotates in a second direction relative to the clutch block, the protrusion of the cam is separated from the pawl, and the pawl is received by the elastic force applied by the first spring In the trench, wherein the first direction is opposite to the second direction. 2. The flower hub of claim 1, wherein the first groove and the second groove are symmetrical to each other. 10120866# 编号号纽01第15页/共27页1013320187-0 M440895 101. The replacement of the flower hub of claim 1, wherein the pawl includes a first a claw piece, a second claw piece, and a connecting surface, the connecting surface is connected between the first claw piece and the second claw piece, and the second end of the first spring is pressed against the connecting surface, when When the ratchet rotates relative to the clutch block in the second direction, the protrusion of the cam is separated from the pawl, and the pawl is received in the groove by the elastic force applied by the first spring. And the flower hub of the first aspect of the patent application, further comprising a ring, wherein the collar is embedded in the shaft hole of the clutch block, and is sleeved in the mandrel . 5. The flower hub of claim 4, wherein the collar is made of 4 metal. 6 . The ratchet is mounted in a flower hub of a bicycle, the flower hub includes a clutch block and a second spring, the clutch block is sleeved on a mandrel, and the clutch block has a cam, the cam a plurality of bumps, the second spring is sleeved on the mandrel and exerts an elastic force on the clutch block, the ratchet includes: at least one sprocket disposed on one side of the ratchet; a plurality of grooves, Provided on the other side of the ratchet, the groove has a first groove and a second groove, and the shape of the first groove and the second groove is a circular arc shape, and the first Between the secondary groove and the second groove, a bottom surface; a plurality of pawls having a first end and a second end, the first end of the pawl being mounted on the first groove a first end of the pawl exposed outside the groove; and a plurality of first springs having a first end and a second end, the first end of the first spring Provided in the second groove, and the second end of the first spring applies an elastic force to the pawl; wherein the bump on the clutch block is Corresponding to the claw, when the ratchet rotates in a first direction relative to the clutch block, the protrusion of the cam abuts the pawl, and the thorn is _6^ single number A 〇 101 16th Page / Total 27 pages 1013320187-0 M440895 I nr^nQR 101 years. On August 21st, the second end of the replacement claw is protruded out of the groove, and when the ratchet is along the second block along the second block When the direction is rotated, the protrusion of the cam is separated from the pawl, and the pawl is received in the groove by the elastic force applied by the first spring, wherein the first direction is opposite to the first Two directions. 7. The ratchet of claim 6, wherein the first groove and the second groove are symmetrical to each other. 8. The ratchet according to claim 6, wherein the pawl comprises a first claw piece, a second/K piece and a connecting surface, the connecting surface being connected to the first claw piece and the second piece Between the claws, the second end of the first spring is pressed against the Φ connecting surface, and when the ratchet rotates in the second direction relative to the clutch, the bump of the cam is opposite to the pawl Separating, the pawl is received in the groove by the elastic force applied by the first spring and is fitted to the bottom surface. 10120866#单单 A〇101 Page 17 of 27 1013320187-0