CN216069468U - Mute hub - Google Patents
Mute hub Download PDFInfo
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- CN216069468U CN216069468U CN202121628510.5U CN202121628510U CN216069468U CN 216069468 U CN216069468 U CN 216069468U CN 202121628510 U CN202121628510 U CN 202121628510U CN 216069468 U CN216069468 U CN 216069468U
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- driving
- clutch
- sleeve
- hub
- driven
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Abstract
The utility model discloses a mute hub, which comprises a tower footing, a hub body and a one-way transmission mechanism, wherein the tower footing is arranged on the tower footing; the tower footing is provided with a connecting shaft, and the peripheral wall of the connecting shaft is provided with at least one chute; the one-way transmission mechanism comprises a driving part, a driven part and a clutch part; the driving part comprises a driving sleeve and a driving magnet matched with the driving sleeve, the driving sleeve is sleeved on a connecting shaft of the tower footing, a sliding block in sliding connection with the chute is arranged on the inner wall of the driving sleeve, and the driving sleeve is also provided with a driving fluted disc; the driven part is connected with the hub body and is provided with a driven fluted disc movably meshed with the driving fluted disc; the clutch part comprises a clutch sleeve and a clutch magnet matched with the clutch sleeve, the clutch sleeve is connected with the hub body and rotatably sleeved with the driving sleeve, and the clutch magnet and the driving magnet attract each other. The utility model has low noise when the bicycle is idle.
Description
Technical Field
The utility model relates to the field of bicycles, in particular to a mute hub.
Background
It is well known that in the part of a bicycle transmission, the hub has been present as an important part. The tower footing of the hub is in one-way transmission fit with the hub body of the hub through a one-way transmission mechanism.
The existing one-way transmission mechanism of the hub generally adopts a ratchet wheel and pawl mechanism; when the tower footing of the hub rotates forwards, the pawl of the ratchet wheel pawl mechanism is meshed with the ratchet of the ratchet wheel, so that the tower footing drives the hub body to rotate forwards synchronously; when the tower footing of the hub rotates reversely, the pawl of the ratchet wheel pawl mechanism is not meshed with the ratchet of the ratchet wheel, and the tower footing can not drive the hub body to rotate; in addition, when the tower footing of the hub is fixed or rotates reversely, the hub body can continue to rotate forwards relative to the tower footing under the action of inertia, and the bicycle is in an idling state.
However, the existing hub has a problem that when the bicycle is in an idle running state, the pawl of the ratchet-pawl mechanism periodically collides with the ratchet wheel to generate periodic noise, so that the user experience is influenced. Therefore, it is desirable to provide a hub that is less noisy when the bicycle is idling.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a mute hub which has low noise when a bicycle idles.
In order to achieve the above purpose, the solution of the utility model is:
a mute hub comprises a tower footing, a hub body and a one-way transmission mechanism; the tower footing is provided with a connecting shaft, the peripheral wall of the connecting shaft is provided with at least one chute, and the chute is intersected with the central axis of the connecting shaft; the one-way transmission mechanism comprises a driving part, a driven part and a clutch part; the driving part comprises a driving sleeve and a driving magnet matched with the driving sleeve, the driving sleeve is sleeved on a connecting shaft of the tower footing, a sliding block in sliding connection with the chute is arranged on the inner wall of the driving sleeve, and the driving sleeve is also provided with a driving fluted disc; the driven part is connected with the hub body and synchronously and rotationally matched with the hub body, and is provided with a driven fluted disc movably meshed with the driving fluted disc; the clutch piece comprises a clutch sleeve and a clutch magnet matched with the clutch sleeve, the clutch sleeve is connected with the hub body and synchronously and rotatably matched with the hub body, the clutch sleeve is rotatably sleeved with the driving sleeve, and the clutch magnet and the driving magnet can attract each other; when the tower foundation rotates forwards, under the adsorption action between the driving magnet of the driving part and the clutch magnet of the clutch part, the driving sleeve sliding block moves forwards along the connecting shaft chute to enable the driving fluted disc of the driving sleeve to be meshed with the driven fluted disc of the driven part, and then the tower foundation can drive the hub body to rotate forwards; when the tower base rotates reversely, under the adsorption action between the driving magnet of the driving part and the clutch magnet of the clutch part, the driving sleeve sliding block moves reversely along the connecting shaft chute so that the driving fluted disc of the driving sleeve is separated from the driven fluted disc of the driven part.
The number of the inclined grooves on the peripheral wall of the connecting shaft is multiple, and the inclined grooves are centrosymmetric about the central axis of the connecting shaft; the number of the sliding blocks on the inner wall of the driving sleeve is multiple, and each sliding block is in sliding connection with each inclined groove.
The number of the driving magnets of the driving piece is multiple, and the driving magnets are distributed in central symmetry with respect to the central axis of the driving sleeve of the driving piece; the clutch device comprises a clutch piece and a clutch sleeve, wherein the clutch piece is provided with a plurality of clutch magnets, and the clutch magnets are distributed in central symmetry with respect to the central axis of the clutch sleeve of the clutch piece.
Each driving magnet of the driving piece is arranged opposite to one sliding block of the driving sleeve.
The driving fluted disc of the driving sleeve of the driving part is an end fluted disc arranged on the end surface of the driving sleeve; and the driven fluted disc of the driven part is an end-face fluted disc arranged on the end face of the driven part.
And a gap is formed between the driving sleeve of the driving part and the clutch sleeve of the clutch part.
The hub body is provided with a connecting hole, and the clutch sleeve is embedded in the connecting hole.
The hub body is provided with a connecting hole, and the inner wall of the connecting hole is provided with a connecting gear ring; the driven piece is inserted into the connecting hole, and a driven gear ring meshed with the connecting gear ring is arranged on the outer wall of the driven piece.
And the connecting shaft of the tower footing is detachably connected with the driving sleeve.
The outer wall of the connecting shaft of the tower footing is provided with a ring edge and a ring groove which are separated from each other; the annular groove is matched with a C-shaped snap ring, an inner ring of the C-shaped snap ring is embedded in the annular groove, and the C-shaped ring and the annular edge respectively limit two sides of the driving sleeve of the driving part.
After the scheme is adopted, when the tower base rotates forwards, the tower base can drive the driving part to rotate forwards relative to the clutch part under the matching of the sliding block and the inclined groove, and at the moment, under the adsorption action between the driving magnet of the driving part and the clutch magnet of the clutch part, the driving sleeve of the driving part can be acted by a positive tangential force, so that the sliding block of the driving sleeve can move forwards along the inclined groove of the connecting shaft to enable the driving sleeve to be close to the driven part, and further, the driving fluted disc of the driving sleeve is meshed with the driven fluted disc of the driven part to enable the tower base to drive the hub body to rotate forwards; when the tower base rotates reversely, the tower base can drive the driving part to rotate reversely relative to the clutch part under the matching of the sliding block and the chute, and at the moment, under the adsorption action between the driving magnet of the driving part and the clutch magnet of the clutch part, the driving sleeve of the driving part can be acted by reverse tangential force, so that the sliding block of the driving sleeve can move reversely along the chute of the connecting shaft to enable the driving sleeve to be away from the driven part, further the driving fluted disc of the driving sleeve is separated from the driven fluted disc of the driven part, and the tower base can not drive the hub body to rotate reversely; when the bicycle idles, the driving part rotates reversely relative to the clutch part at the time to separate the driving fluted disc of the driving sleeve from the driven fluted disc of the driven part, so that the driving sleeve does not contact with the driven part to generate friction, and the noise can be reduced.
Drawings
FIG. 1 is an exploded view of the present invention 1;
FIG. 2 is an exploded view of the present invention 2;
FIG. 3 is a schematic structural diagram of the present invention 1;
FIG. 4 is a cross-sectional view of the present invention 1;
FIG. 5 is a cross-sectional view of the present invention 2;
description of reference numerals:
a tower footing 1, a connecting shaft 11, a chute 111, a ring edge 112, a ring groove 113, a C-shaped snap ring 12,
the hub body 2, the connecting hole 21, the connecting gear ring 211, the retaining edge 212, the retaining ring 22,
the one-way transmission mechanism 3 is arranged,
the driving member 31, the driving sleeve 311, the slider 3111, the driving toothed disc 3112, the driving magnet 312,
the driven member 32, the driven fluted disc 321, the driven gear ring 322,
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
As shown in fig. 1 to 5, the utility model discloses a silent hub, which comprises a tower footing 1, a hub body 2 and a one-way transmission mechanism 3; the tower footing 1 is in one-way transmission fit with the hub body 2 through the one-way transmission mechanism 3.
As shown in fig. 1 to 5, the tower footing 1 is provided with a connecting shaft 11, the peripheral wall of the connecting shaft 11 is provided with at least one inclined groove 111, and the inclined groove 111 intersects with the central axis of the connecting shaft 11; the one-way transmission mechanism 3 comprises a driving part 31, a driven part 32 and a clutch part 33; the driving member 31 includes a driving sleeve 311 and a driving magnet 312 matched with the driving sleeve 311, the number of the driving magnets 312 is at least one, the driving magnet 312 may be in a block shape, the driving sleeve 311 is sleeved on the connecting shaft 11 of the tower footing 1, a sliding block 3111 slidably connected with the inclined groove 111 is arranged on the inner wall of the driving sleeve 311, and the driving sleeve 311 is further provided with a driving fluted disc 3112; the driven part 32 is connected with the hub body 2 and synchronously and rotationally matched with the hub body 2, and the driven part 32 is provided with a driven fluted disc 321 which is movably meshed with the driving fluted disc 3112; the clutch member 33 includes a clutch sleeve 331 and clutch magnets 332 engaged with the clutch sleeve 331, the number of the clutch magnets 332 is at least one, the clutch magnets 332 may be in a block shape, the clutch sleeve 331 is connected with the hub body 2 and the two are synchronously and rotatably engaged, the clutch sleeve 331 is rotatably sleeved with the driving sleeve 311, and the clutch magnets 332 and the driving magnet 312 may be mutually attracted.
When the tower footing 1 rotates in the forward direction, under the matching of the sliding block 3111 and the inclined groove 111, the tower footing 1 can drive the driving part 31 to rotate in the forward direction relative to the clutch part 33, at the moment, under the adsorption action between the driving magnet 312 of the driving part 31 and the clutch magnet 332 of the clutch part 33, the driving sleeve 311 of the driving part 31 can be acted by a positive tangential force, so that the sliding block 3111 of the driving sleeve 311 can move in the forward direction along the inclined groove 111 of the connecting shaft 11 to enable the driving sleeve 311 to be close to the driven part 32, and further, the driving toothed disc 3112 of the driving sleeve 311 is meshed with the driven toothed disc 321 of the driven part 32 to enable the tower footing 1 to drive the hub body 2 to rotate in the forward direction; when the tower footing 1 rotates reversely, under the matching of the sliding block 3111 and the inclined groove 111, the tower footing 1 can drive the driving part 31 to rotate reversely relative to the clutch part 33, at the moment, under the adsorption action between the driving magnet 312 of the driving part 31 and the clutch magnet 332 of the clutch part 33, the driving sleeve 311 of the driving part 31 can be acted by the reverse tangential force, so that the sliding block 3111 of the driving sleeve 311 can move reversely along the inclined groove 111 of the connecting shaft 11 to enable the driving sleeve 311 to be far away from the driven part 32, further, the driving toothed disc 3112 of the driving sleeve 311 is separated from the driven toothed disc 321 of the driven part 32, and the tower footing 1 can not drive the hub body 2 to rotate reversely; when the bicycle idles, the driving member 31 rotates reversely relative to the clutch member 33 to separate the driving toothed disc 3112 of the driving sleeve 311 from the driven toothed disc 321 of the driven member 32, so that the driving sleeve 311 does not contact with the driven member 32 to generate friction, thereby reducing noise.
As shown in fig. 1, 2 and 5, the number of the inclined grooves 111 of the peripheral wall of the connecting shaft 11 of the tower foundation 1 may be plural, and each inclined groove 111 is centrosymmetric with respect to the central axis of the connecting shaft 11; the number of the sliding blocks 3111 on the inner wall of the driving sleeve 311 of the driving member 31 is plural, and each sliding block 3111 is in sliding contact with each inclined groove 111; according to the utility model, through the arrangement, the driving part 31 is not easy to deflect when the tower footing 1 drives the driving part 31 to rotate, and the driving part 31 is prevented from being clamped.
As shown in fig. 1, fig. 2 and fig. 4, the connecting shaft 11 of the foundation 1 can be detachably connected to the driving sleeve 311, so that people can repair and replace the driving sleeve 311; specifically, the outer wall of the connecting shaft 11 may be provided with a ring edge 112 and a ring groove 113 which are separated from each other; the ring groove 113 is matched with a C-shaped snap ring 12, the inner ring of the C-shaped snap ring 12 is embedded in the ring groove 113, and the C-shaped snap ring 12 and the ring edge 112 respectively limit two sides of the driving sleeve 311 of the driving part 3 to prevent the driving sleeve 311 from separating.
As shown in fig. 1, 2 and 4, the hub body 2 can be detachably connected to the follower 32, so that people can repair and replace the follower 32; specifically, the hub body 2 is provided with a connecting hole 21, and the inner wall of the connecting hole 21 is provided with a connecting gear ring 211; the driven member 32 is inserted into the connecting hole 21, and a driven gear ring 322 meshed with the connecting gear ring 211 is arranged on the outer wall of the driven member 32, so that the driven member 32 and the hub body 2 are synchronously matched in a rotating manner; the inner wall of the connecting hole 21 may be provided with a blocking edge 212, the connecting hole 21 is matched with a retaining ring 22 in a clamping manner, and the blocking edge 212 and the retaining ring 22 respectively limit two sides of the driven gear ring 322 to prevent the driven member 32 from being separated from the hub body 2.
As shown in fig. 1 and fig. 2, the driving toothed disc 3112 of the driving sleeve 311 of the driving member 31 may be an end-face toothed disc disposed on an end face of the driving sleeve 311, and teeth of the driving toothed disc 3112 are helical teeth; the driven toothed disc 321 of the driven member 32 is an end-face toothed disc disposed on an end face of the driven member 32, and teeth of the driven toothed disc 321 are also inclined teeth.
As shown in fig. 1, 2 and 5, the driving magnet 312 of the driving member 31 may be plural, each driving magnet 312 is distributed in a central symmetry manner about the central axis of the driving sleeve 311 of the driving member 31, the clutch magnet 332 of the clutch member 33 may also be plural, and each clutch magnet 332 is distributed in a central symmetry manner about the central axis of the clutch sleeve 331 of the clutch member 33, so that when the driving member 31 rotates in a forward direction or a reverse direction relative to the clutch member 33, a tangential force applied to the driving sleeve 311 of the driving member 31 is large, and the slider 3111 is more easily moved along the inclined slot 111. Each of the driving magnets 312 of the driving member 31 is disposed opposite to one of the sliders 3111 of the driving sleeve 311, that is, one of the driving magnets 312 is disposed opposite to one of the sliders 3111, so that the slider 3111 is more easily moved along the inclined groove 111 when the driving member 31 rotates in a forward or reverse direction with respect to the clutch member 33.
As shown in fig. 4 and fig. 5, a gap exists between the driving sleeve 311 of the driving member 31 and the clutch sleeve 331 of the clutch member 33, so that there is no contact friction between the driving sleeve 311 and the clutch sleeve 331, and thus the noise of the mute hub of the present invention is low, and the service lives of the driving sleeve 311 and the clutch sleeve 331 are prolonged; when a gap exists between the driving sleeve 311 and the clutch sleeve 331, the clutch sleeve 331 is directly embedded in the connecting hole 21 of the hub body 2, so that the clutch sleeve 331 and the hub body 2 are synchronously and rotatably matched, and the clutch sleeve 33 is easy to assemble. It should be noted that the clutch sleeve 331 can also be welded to the hub body 1 or integrally formed.
As shown in fig. 1, 2, 4 and 5, the silent hub of the present invention may further include a mandrel 4, the mandrel 4 may rotatably pass through the foundation 1 and the hub body 2, and bearings 5 are respectively fitted between the mandrel 4 and the foundation 1 and between the hub body 2, so that the foundation 1 and the hub body 2 can smoothly rotate relative to the mandrel 4.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (10)
1. A silence flower hub which characterized in that: comprises a tower footing, a hub body and a one-way transmission mechanism;
the tower footing is provided with a connecting shaft, the peripheral wall of the connecting shaft is provided with at least one chute, and the chute is intersected with the central axis of the connecting shaft;
the one-way transmission mechanism comprises a driving part, a driven part and a clutch part; the driving part comprises a driving sleeve and a driving magnet matched with the driving sleeve, the driving sleeve is sleeved on a connecting shaft of the tower footing, a sliding block in sliding connection with the chute is arranged on the inner wall of the driving sleeve, and the driving sleeve is also provided with a driving fluted disc; the driven part is connected with the hub body and synchronously and rotationally matched with the hub body, and is provided with a driven fluted disc movably meshed with the driving fluted disc; the clutch piece comprises a clutch sleeve and a clutch magnet matched with the clutch sleeve, the clutch sleeve is connected with the hub body and synchronously and rotatably matched with the hub body, the clutch sleeve is rotatably sleeved with the driving sleeve, and the clutch magnet and the driving magnet can attract each other;
when the tower foundation rotates forwards, under the adsorption action between the driving magnet of the driving part and the clutch magnet of the clutch part, the driving sleeve sliding block moves forwards along the connecting shaft chute to enable the driving fluted disc of the driving sleeve to be meshed with the driven fluted disc of the driven part, and then the tower foundation can drive the hub body to rotate forwards;
when the tower base rotates reversely, under the adsorption action between the driving magnet of the driving part and the clutch magnet of the clutch part, the driving sleeve sliding block moves reversely along the connecting shaft chute so that the driving fluted disc of the driving sleeve is separated from the driven fluted disc of the driven part.
2. A quiet hub as claimed in claim 1, wherein: the number of the inclined grooves on the peripheral wall of the connecting shaft is multiple, and the inclined grooves are centrosymmetric about the central axis of the connecting shaft;
the number of the sliding blocks on the inner wall of the driving sleeve is multiple, and each sliding block is in sliding connection with each inclined groove.
3. A quiet hub as claimed in claim 1, wherein: the number of the driving magnets of the driving piece is multiple, and the driving magnets are distributed in central symmetry with respect to the central axis of the driving sleeve of the driving piece; the clutch device comprises a clutch piece and a clutch sleeve, wherein the clutch piece is provided with a plurality of clutch magnets, and the clutch magnets are distributed in central symmetry with respect to the central axis of the clutch sleeve of the clutch piece.
4. A quiet hub as claimed in claim 1, 2 or 3, wherein: each driving magnet of the driving piece is arranged opposite to one sliding block of the driving sleeve.
5. A quiet hub as claimed in claim 1, wherein: the driving fluted disc of the driving sleeve of the driving part is an end fluted disc arranged on the end surface of the driving sleeve; and the driven fluted disc of the driven part is an end-face fluted disc arranged on the end face of the driven part.
6. A quiet hub as claimed in claim 1, wherein: and a gap is formed between the driving sleeve of the driving part and the clutch sleeve of the clutch part.
7. A quiet hub as claimed in claim 6, wherein: the hub body is provided with a connecting hole, and the clutch sleeve is embedded in the connecting hole.
8. A quiet hub as claimed in claim 1, wherein: the hub body is provided with a connecting hole, and the inner wall of the connecting hole is provided with a connecting gear ring; the driven piece is inserted into the connecting hole, and a driven gear ring meshed with the connecting gear ring is arranged on the outer wall of the driven piece.
9. A quiet hub as claimed in claim 1, wherein: and the connecting shaft of the tower footing is detachably connected with the driving sleeve.
10. A quiet hub as claimed in claim 9, wherein: the outer wall of the connecting shaft of the tower footing is provided with a ring edge and a ring groove which are separated from each other; the annular groove is matched with a C-shaped snap ring, an inner ring of the C-shaped snap ring is embedded in the annular groove, and the C-shaped ring and the annular edge respectively limit two sides of the driving sleeve of the driving part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121628510.5U CN216069468U (en) | 2021-07-16 | 2021-07-16 | Mute hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121628510.5U CN216069468U (en) | 2021-07-16 | 2021-07-16 | Mute hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216069468U true CN216069468U (en) | 2022-03-18 |
Family
ID=80666060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121628510.5U Active CN216069468U (en) | 2021-07-16 | 2021-07-16 | Mute hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216069468U (en) |
-
2021
- 2021-07-16 CN CN202121628510.5U patent/CN216069468U/en active Active
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