CN201128474Y - Ratchet wheel and hub - Google Patents
Ratchet wheel and hub Download PDFInfo
- Publication number
- CN201128474Y CN201128474Y CNU2007201784774U CN200720178477U CN201128474Y CN 201128474 Y CN201128474 Y CN 201128474Y CN U2007201784774 U CNU2007201784774 U CN U2007201784774U CN 200720178477 U CN200720178477 U CN 200720178477U CN 201128474 Y CN201128474 Y CN 201128474Y
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- ratchet
- groove
- time
- projection
- internal gear
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Abstract
The utility model provides a ratchet wheel and a wheel hub. The ratchet wheel comprises at least a chain wheel, a plurality of grooves and a plurality of detents. The chain wheel is arranged at one side of the ratchet wheel, and the grooves are arranged at the other side of the ratchet wheel. The grooves are provided with first grooves and second grooves which are symmetrical in pairs, and the shape of the first grooves and the second grooves is arc. In addition, the first ends of the detents are arranged inside the first groove, and the second ends of the detents are exposed outside the groove. Furthermore, the first ends of elastic sheets are arranged inside the second groove, and the second ends of the elastic sheets are closely connected with the detents.
Description
Technical field
The utility model relates to the Mountain bike structure, is meant a kind of ratchet and wheel hub structure of Mountain bike especially.
Background technology
When the 1970's, a kind of cross-country cycling (bicycle motocross) motion has been risen in the U.S., and the bicycle that is used in this kind motion is called as the BMX bicycle.The vehicle of BMX bicycle is smaller, tire is thicker, and the place of match is also quite similar with the used place of cross-country motorcycle.This motion is very fast to come into vogue in the young people, yet to 1980 mid-nineties 90s, most of youngster are subjected to the influence of slide plate culture deeply, it is too single to feel only to compete in the place, therefore at that time one make the youngster of BOBHARO pedal has been installed in front and back wheel, players just can be made many new fancy by these several pedals.So people begin the BMX bicycle taken in the place of level land, slide plate and play, and the fancy of playing is more than slide plate, jumps De Genggao, more stimulated, and the name of this kind bicycle has also become BMX freestyle bicycle from the BMX bicycle.
Please refer to Fig. 1, Figure 1 shows that a kind of BMX freestyle bicycle on the market.This bicycle 10 comprises vehicle frame 11, rear wheel 14, front vehicle wheel 14 ' and driving system 15, and wherein front vehicle wheel 14 ' is to be assembled in respectively on the front overhang suspension bracket 12 and rear overhang suspension bracket 13 of vehicle frame 11 with rear wheel 14.Driving system 15 comprises a pedal 16, one first sprocket wheel 17, a chain 18 and a wheel hub 100, the user drives 17 rotations of first sprocket wheel by means of stepping on pedal 16, the rotation of first sprocket wheel 17 can drive chain 18 and rotate, the rotation of chain 18 then allows hub body 120 drive rear wheel 14 rotations, and bicycle 10 is pushed ahead.In addition, pedal 19 then is set in respectively on rear wheel 14 and the front vehicle wheel 14 ' with pedal 19 ', carries out the fancy performance for the user and uses.
Figure 2 shows that a kind of wheel hub of the BMX of being used in freestyle bicycle, this wheel hub 100 is mainly by axle 110, hub body 120, ratchet 130, internal gear 140 and 150 formations of a plurality of bearings (bearing).Hub body 120 is to be set on the axle 110 with ratchet 130, and hub body 120 and ratchet 130 all are to utilize bearing 150 and roll with axle 110 and to be connected.Then, please Figure 3 shows that the lateral plan of ratchet and internal gear simultaneously with reference to Fig. 2 and Fig. 3.Ratchet 130 comprises one second sprocket wheel 132, a plurality of ratchet 134 and a spring 136, ratchet 134 for example be with around mode and equally spaced be installed on the ratchet ditch 138 of ratchet 130, and utilize spring 136 to fix.In addition, please refer to Fig. 4, Figure 4 shows that the block diagram of hub body and internal gear.Internal gear 140 is provided with first right-hand screw thread 142, the inside face of hub body 120 then is provided with second right-hand screw thread 122, first right-hand screw thread 142 agrees with each other mutually with second right-hand screw thread 122, with the clws direction internal gear 140 is screwed in, internal gear 140 is fixed in the hub body 120.
By Fig. 3 and Fig. 4 as can be known, when chain 18 (as Fig. 1) spurs second sprocket wheel 132 (as Fig. 2) when being rotated in a clockwise direction, also can drive ratchet 130 rotations, this moment ratchet 134 can with internal tooth 144 interlock mutually of internal gear 140, and internal gear 140 is rotated, when internal gear 140 rotates, hub body 120 is rotated, and bicycle 10 is marched forward.When chain 18 pulling second sprocket wheel 132 was rotated with anticlockwise direction, the ratchet 134 on the ratchet 130 can be along the internal tooth 144 that slip over internal gear 140, and this moment, hub body 120 can not driven this situation promptly so-called " idle running ".
Referring again to Fig. 1, can find that pedal 19 is provided in a side of chain 18 opposite side of (as shown in Figure 2) (being the left side of bicycle 10), so the design-calculated reason is to prevent when the user carries out the fancy performance, can step on chain 18 or ratchet 130.Yet some user but is accustomed to carrying out the fancy performance on the right side of bicycle 10, just needs chain 18 and ratchet 130 are installed in the left side of bicycle 10 thus.But thus, the builder of bicycle 10 just must use another multi-form wheel hub, but not only above-mentioned wheel hub 100 is carried out 180 ° upside-down mounting, and reason will be in narration down.
Carry out 180 ° upside-down mounting when wheel hub 100 after, bicycle 10 is when advancing, because the hand of rotation of ratchet 130 is with originally opposite, so direction is set all need carries out 180 ° reverse of the ratchet ditch 138 of ratchet 130 and the internal tooth 144 of internal gear 140, and first right-hand screw thread 142 and second right-hand screw thread 122 all need change minus thread into.The reason that right-hand screw thread will be changed into minus thread is: be contained in the left side of bicycle 10 when ratchet 130 after, because hand of rotation opposite (becoming conter clockwise) if still continue to use right-hand screw thread, then can cause getting loose of internal gear 140.
Therefore, when builder's desire of bicycle 10 is installed in the left side of bicycle 10 with chain 18 and ratchet 130, and can't continue to use employed wheel hub 100 originally, and must produce other a different set of wheel hub.So, can increase manufacturing cost.
Therefore, when how to make the installing direction reversing of the ratchet of bicycle and hub body, not needing it is redesigned and makes, is to be worth this area to have to know that usually the knowledgeable goes to thinking ground.
Summary of the invention
The utility model main purpose provides a kind of wheel hub and ratchet structure thereof, when the installing direction reversing of the ratchet of bicycle and hub body, need not use other a different set of wheel hub, so can reduce manufacturing cost.
In order to reach above-mentioned purpose and other purposes, the utility model provides a kind of wheel hub, and it comprises: an axle, a ratchet, an internal gear and a hub body.Ratchet is to be set on the axle, and ratchet comprises: at least one sprocket wheel, a plurality of groove, a plurality of ratchet and a plurality of shell fragment.Sprocket wheel is located at a wherein side of described ratchet, and groove then is located at an other side of ratchet.These grooves have symmetrical in twos first time groove with groove for the second time, and the circular arc type that is shaped as of groove and groove for the second time for the first time.First end of ratchet is installed in the groove first time, and second end of ratchet then exposes to outside the groove.First end of shell fragment is installed in for the second time in the groove, and second end of shell fragment then butt ratchet.Internal gear is round these ratchets, the inside face of internal gear and outside face convex with a plurality of first projections and a plurality of second projection respectively, the second end butt of ratchet first projection, the bearing of trend of these second projections is identical with the bearing of trend of axle, and the left and right sides of first projection can both hold second end of described ratchet to carry out butt.Hub body is set on the axle, and hub body is provided with a plurality of grooves at the inside face near a side of internal gear, and these grooves agree with each other mutually with second projection.
In above-mentioned wheel hub, each first projection is to be left-right symmetric, and is echelon form.And, adopt flush fit to be connected between groove and second projection.In addition, second projection then is to be rectangular-shaped.
In order to reach above-mentioned purpose and other purposes, the utility model provides a kind of ratchet in addition, and it comprises: at least one sprocket wheel, a plurality of groove and a plurality of ratchet.Sprocket wheel is provided in a side of a wherein side of described ratchet, and groove then is located at an other side of ratchet, these grooves have symmetrical in twos first time groove with groove for the second time, and the circular arc type that is shaped as of groove and groove for the second time for the first time.In addition, first end of ratchet is installed in the groove first time, and second end of ratchet then exposes to outside the groove.In addition, first end of shell fragment is installed in for the second time in the groove, and second end of these shell fragments then butt ratchet.
Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be: because among the utility model, the groove of ratchet have symmetrical in twos first time groove with groove for the second time, so after the builder need carry out upside-down mounting with wheel hub, only need first end of ratchet is installed in the groove second time, and first end of shell fragment is installed in for the first time in the groove, just ratchet can be installed in the left side of bicycle.Owing to need not produce the ratchet and the hub body of other one group of different designs, so manufacturing cost can be forced down.
Description of drawings
Figure 1 shows that a kind of BMX freestyle bicycle on the market;
Figure 2 shows that the wheel hub of the BMX freestyle bicycle of a kind of Fig. 1 of being used in;
Figure 3 shows that the ratchet of Fig. 2 and the lateral plan of internal gear;
Figure 4 shows that the hub body of Fig. 2 and the block diagram of internal gear;
Figure 5 shows that the exploded view of a wheel hub of present embodiment;
Figure 6 shows that the right side view of ratchet and internal gear;
After Figure 7 shows that the ratchet upside-down mounting, the right side view of ratchet and internal gear.
Description of reference numerals: 10-bicycle; The 11-vehicle frame; The 14-rear wheel; 14 '-front vehicle wheel; The 15-driving system; The 16-pedal; 17-first sprocket wheel; The 18-chain; The 100-wheel hub; The 110-axle; The 120-hub body; 122-second right-hand screw thread; The 130-ratchet; 132-second sprocket wheel; The 134-ratchet; The 136-spring; 138-ratchet ditch; The 140-internal gear; 142-first right-hand screw thread; The 144-internal tooth; The 150-bearing; The 200-wheel hub; The 210-axle; The 220-hub body; 222-the 3rd projection; The 224-groove; The 230-ratchet; The 232-sprocket wheel; The 234-groove; 234a-is groove for the first time; 234b-is groove for the second time; The 236-ratchet; 236a, 238a-first end; 236b, 238b-second end; The 238-shell fragment; The 240-internal gear; 242-first projection; 244-second projection; The 250-bearing.
The specific embodiment
Please refer to Fig. 5, Figure 5 shows that the exploded view of a wheel hub of present embodiment.Wheel hub 200 comprises: an axle 210, a hub body 220, a ratchet 230 and an internal gear 240.Ratchet 230 is set on the axle 210, and this ratchet 230 comprises a sprocket wheel 232, a plurality of groove 234, a plurality of ratchet 236 and a plurality of shell fragments 238, and sprocket wheel 232 is the both sides that are separately positioned on ratchet 230 with groove 234.In addition, internal gear 240 is set on the axle 210 and round above-mentioned ratchet 236, the inside face of internal gear 240 convexes with a plurality of first projections 242, the outside face of internal gear 240 then convexes with a plurality of second projections 244, wherein the bearing of trend of second projection 244 is identical with the bearing of trend of axle 210, in the present embodiment, second projection 244 is a cuboid.In addition, hub body 220 is set on the axle 210, and hub body 220 is provided with a plurality of the 3rd projection 222, the three projections 222 at the inside face near a side of internal gear 240 and is formed with a groove 224 each other, and these grooves 224 agree with each other mutually with second projection 244.In addition, wheel hub 200 also comprises four bearings 250, and hub body 220 and ratchet 230 all are to utilize bearing 250 and roll with axle 210 to be connected, and each bearing 250 all oil sealing a plurality of balls (not illustrating) are arranged.In addition, in Fig. 5, illustrate but the part that is not marked with label owing to be not emphasis of the present utility model, so just do not introduced at this.
Please refer to Fig. 6, Figure 6 shows that the right side view of ratchet and internal gear.Groove 234 have symmetrical in twos first time groove 234a with groove 234b for the second time, and the circular arc type that is shaped as of groove 234a and groove 234b for the second time for the first time.Wherein, the first end 236a of ratchet 236 is installed in for the first time in the groove 234a, and the shape of the first end 236a be with the first time groove 234a agree with mutually.The first end 238a of shell fragment 238 is installed in for the second time in the groove 234b, and the second end 238b of shell fragment 238 then butt ratchet 236.In addition and since the second end 238b of shell fragment 238 then butt ratchet 236, and allow the second end 236b of ratchet 236 expose to outside the groove 234, and butt first projection 242 on the internal gear 240.
When the chain on the bicycle 10 18 (as Fig. 1) pulling second sprocket wheel 232 is rotated in a clockwise direction, ratchet 230 also and then rotates, so be rotated can drive internal gear 240 because the second end 236b butt of ratchet 236 side of first projection 242 this moment.When internal gear 240 rotated, the related hub body 220 that makes was rotated, and bicycle 10 is marched forward.Yet when chain 18 pullings second sprocket wheel 232 was rotated in the opposite direction, the ratchet 234 on the ratchet 230 can be along first projection 242 that slips on the internal gear 240, and this moment, hub body 220 can not driven, and caused ratchet 230 idle running.
In the above-described embodiment, chain 18 is the right sides that are installed in bicycle 10 with ratchet 230.Yet, if the builder wants chain 18 and ratchet 230 are installed in the left side of bicycle 10, then the builder only needs the first end 236a of ratchet 236 is installed in the groove 234b second time, and the first end 238a of shell fragment 238 is installed in for the first time in the groove 234a (as shown in Figure 7), just ratchet 230 can be arranged on the left side of bicycle 10.At this moment, the second end 236b of ratchet 236 is the opposite sides that are connected to first projection 242.
In addition, please join again and make Fig. 5, hub body 220 is to rely on the groove 224 and second projection 244 to agree with mutually each other with internal gear 240, and internal gear 240 is installed on the hub body 220.And in the present embodiment, second projection 244 is the relations that are close-fitting with groove 224.Because hub body 220 is not to combine in the sealed mode of screw thread with internal gear 240, so compared to existing hub body 120 and internal gear 140, the internal gear 240 of present embodiment can not produce when hand of rotation reverses and get loose.
In the present embodiment, first projection 242 is to be symmetrical trapezoidal shape (please refer to Fig. 6), yet this area also can be designed to other shape, for example: rectangular-shaped, as long as make the second end 236b that the left and right sides of first projection 242 can both hold described ratchet 236 carrying out butt, rotate and get final product and allow ratchet 230 can drive internal gear 140.In addition, this area has knows that usually the knowledgeable also can be provided with the sprocket wheel that a plurality of diameters do not wait on ratchet 230, so that the function of speed change to be provided.
In sum, since the groove 234 of the ratchet 230 of present embodiment have symmetrical in twos first time groove 234a with groove 234b for the second time, so after the builder need carry out upside-down mounting with wheel hub 200, only need the first end 236a of ratchet 236 is installed in the groove 234b second time, and the first end 238a of shell fragment 238 is installed in for the first time in the groove 234a, just ratchet 230 can be arranged on the left side of bicycle 10.Owing to need not produce the ratchet and the hub body of other one group of different designs, so manufacturing cost can be forced down.
More than explanation is just illustrative for the utility model, and it is nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited, can make many modifications, variation or equivalence, but but all will fall within the claim restricted portion of the present utility model.
Claims (6)
1. a wheel hub is installed on the bicycle, it is characterized in that: described wheel hub comprises:
One axle;
One ratchet is set on the described axle, and described ratchet comprises:
At least one sprocket wheel is located at the wherein side of described ratchet;
A plurality of grooves are located at the other side of described ratchet, described groove have symmetrical in twos first time groove with groove for the second time, and described first time groove and described second time groove be shaped as circular arc type;
A plurality of ratchets, first end of described ratchet are installed in described first time of the groove, and second end of described ratchet then exposes to outside the described groove; And
A plurality of shell fragments, first end of described shell fragment are installed in described second time of the groove, and second end of described shell fragment then butt described ratchet;
One internal gear, round described ratchet, the inside face of described internal gear and outside face convex with a plurality of first projections and a plurality of second projection respectively, the second end butt of described ratchet described first projection, the bearing of trend of described second projection is identical with the bearing of trend of described axle, and the left and right sides of described first projection can both hold second end of described ratchet to carry out butt; And
One hub body is set on the described axle, and described hub body is provided with a plurality of grooves at the inside face of a side of close described internal gear, and described groove agrees with mutually with described second projection.
2. wheel hub according to claim 1 is characterized in that: each first projection is to be left-right symmetric.
3. wheel hub according to claim 2 is characterized in that: described first projection is trapezoidal shape.
4. wheel hub according to claim 1 is characterized in that: adopt flush fit to be connected between described groove and described second projection.
5. wheel hub according to claim 1 is characterized in that: described second projection is to be rectangular-shaped.
6. a ratchet is installed on the wheel hub of bicycle, it is characterized in that: described ratchet comprises:
At least one sprocket wheel is located at the wherein side of described ratchet;
A plurality of grooves are located at the other side of described ratchet, described groove have symmetrical in twos first time groove with groove for the second time, and described first time groove and described second time groove be shaped as circular arc type;
A plurality of ratchets, first end of described ratchet are installed in described first time of the groove, and second end of described ratchet then exposes to outside the described groove; And
A plurality of shell fragments, first end of described shell fragment are installed in described second time of the groove, and second end of described shell fragment then butt described ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201784774U CN201128474Y (en) | 2007-10-22 | 2007-10-22 | Ratchet wheel and hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201784774U CN201128474Y (en) | 2007-10-22 | 2007-10-22 | Ratchet wheel and hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201128474Y true CN201128474Y (en) | 2008-10-08 |
Family
ID=40016307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201784774U Expired - Fee Related CN201128474Y (en) | 2007-10-22 | 2007-10-22 | Ratchet wheel and hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201128474Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879841A (en) * | 2010-07-05 | 2010-11-10 | 张昌维 | Rear axle assembly for bicycle |
| CN101954840A (en) * | 2009-11-21 | 2011-01-26 | 张昌维 | Rear axle assembly of bicycle |
| CN101734101B (en) * | 2008-11-12 | 2011-09-14 | 乔绅股份有限公司 | Normally closed hub ratchet structure |
| WO2011124035A1 (en) * | 2010-04-09 | 2011-10-13 | Lin Wen-Hwa | Bicycle hub structure |
| CN102398469A (en) * | 2011-06-10 | 2012-04-04 | 宁波威玛斯车业有限公司 | Novel double-R axle bumper bicycle spline hub |
| EP2345546A3 (en) * | 2010-01-14 | 2012-08-29 | Han Vin Ent. Co., Ltd. | Ratchet hub device |
| CN102985315A (en) * | 2010-06-29 | 2013-03-20 | 绳带驱动技术有限公司 | Wheel hub arrangement for a wheel driven by an alternating symmetric drive system using a flexible pulling element, that can be used in vehicles, particularly in bicycles |
| CN104088925A (en) * | 2014-06-30 | 2014-10-08 | 西北工业大学 | Jaw-type overrunning clutch of energy-saving racing bicycle |
| CN110181997A (en) * | 2018-02-23 | 2019-08-30 | 德安百世实业股份有限公司 | Ratchet face disengages the flower hub of effect when tool idle running |
-
2007
- 2007-10-22 CN CNU2007201784774U patent/CN201128474Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734101B (en) * | 2008-11-12 | 2011-09-14 | 乔绅股份有限公司 | Normally closed hub ratchet structure |
| CN101954840A (en) * | 2009-11-21 | 2011-01-26 | 张昌维 | Rear axle assembly of bicycle |
| EP2345546A3 (en) * | 2010-01-14 | 2012-08-29 | Han Vin Ent. Co., Ltd. | Ratchet hub device |
| WO2011124035A1 (en) * | 2010-04-09 | 2011-10-13 | Lin Wen-Hwa | Bicycle hub structure |
| CN102985315A (en) * | 2010-06-29 | 2013-03-20 | 绳带驱动技术有限公司 | Wheel hub arrangement for a wheel driven by an alternating symmetric drive system using a flexible pulling element, that can be used in vehicles, particularly in bicycles |
| CN101879841A (en) * | 2010-07-05 | 2010-11-10 | 张昌维 | Rear axle assembly for bicycle |
| CN102398469A (en) * | 2011-06-10 | 2012-04-04 | 宁波威玛斯车业有限公司 | Novel double-R axle bumper bicycle spline hub |
| CN104088925A (en) * | 2014-06-30 | 2014-10-08 | 西北工业大学 | Jaw-type overrunning clutch of energy-saving racing bicycle |
| CN110181997A (en) * | 2018-02-23 | 2019-08-30 | 德安百世实业股份有限公司 | Ratchet face disengages the flower hub of effect when tool idle running |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20121022 |