The present invention relates to a bicycle internal clutch, and in particular to a interior clutch-used control mechanism.
The control mechanism of an internal clutch of a bicycle is complex and thus is heavy, large volume, and expensive. Meanwhile, it is insensitive in operation so as to deteriorate the quality of the clutch and the bicycle. Therefore, it is eager to develop and improve the prior art internal clutch of a bicycle.
Other than the designs of gears and paths of the internal clutch, to improve the driving rods and other structural elements of the internal clutches has related to the structures, weights and costs, and sensitivity and preciseness in controlling and the speed of change gears. Therefore, there is an eager demands to have an internal clutch with a the simple structures, light weights and low costs, and high sensitivity, high preciseness in controlling, fast speed in changing gears.
The present invention relates to bikes, and in particular to a interior clutch-used control mechanism, in that, by power rotating components (such as input rings, inner gears planet frames, output rings, etc.) which rotates as the internal clutch and cam or cam-like component, clutching components are controlled. That is, using a cam or cam-like components to drive a driven device to rotate or displace so as to control the clutch to change gears. The internal clutch is commonly used to chainless bikes and chain contained bikes; has the advantages of saving storage space, light weight, low cost, high usages in industry. Furthermore the structure of the internal clutch is simple so that the efficiencies in assembly and repair are promoted. In the present invention by power rotating components (such as input rings, inner gears planet frames, output rings, etc.) which rotates as the internal clutch and cam or cam-like component, clutching components are controlled, such as to control the fixing of a sun gear, to control the engagements of the internal gear and planet gear. That is, using a cam or cam-like components to drive a driven device to rotate or displace so as to control the clutch to change gears
To achieve above object, the present invention provides an interior clutch-used control mechanism comprises a driving rod being installed on a center shaft of an internal clutch; a control claw actuating seat and a rotation ring being installed at an outer side of the center shaft; the rotation ring being used as a power rotation unit; the control claw actuating seat being positioned at a center of the rotation ring; an inner side of the rotation ring being installed with a plurality of claw shafts for being assembled to a plurality of upper planet power ratchet claws and a plurality of lower planet power ratchet claws; each of the upper planet power ratchet claws being connected to a respective one claw shaft each of the lower planet power ratchet claws being connected to a respective one claw shaft; a ratchet claw returning spring surrounding an outside of the claw shafts; a ratchet claw control panel being installed at an inner side of the upper planet power ratchet claws and the lower planet power ratchet claws; the ratchet claw control panel being used as a linking device; the ratchet claw control panel being installed with a plurality of left control claws and a plurality of right control claws and a plurality of controlling claw shafts; each of the left control claws being connected to a respective one controlling claw shaft; each of the right control claws being connected to a respective one controlling claw shafts; and a claw returning spring being installed at an inner side of the controlling claw shafts; the left control claws and the right control claws being positioned and installed on the ratchet claw control panel and being driven by the ratchet claw control panel to rotate.
With reference to
Referring to
With reference to
A center shaft 10 of the internal clutch 1 has at least one guide recess 101 for receiving a clutching driving rod.
An actuating sliding seat 25 is installed outside the center shaft 10. A surface of the sliding seat 25 is installed with a left gear 28, a ratchet ring 2 and a right gear 29. The ratchet gear ring 2 is installed between the left gear 28 and the right gear 29.
Between the left gear 28 and the center shaft 10 is installed with a left spring base 201, a left sliding block returning spring 27 and a left actuating sliding block 26 which is resisted by the sliding block returning spring 27 and is controlled by the cam base 24.
Between the right gear 29 and the center shaft 10 is installed with a right spring base 201, a right sliding block returning spring 27′ and a right actuating sliding block 26′ which is resisted by the sliding block returning spring 27 and is controlled by a cam base 24.
The cam base 24 is matched to the ratchet ring 2 and is installed with a first driving rod A. Movement of the cam base 24 will cause to drive one of a lift claw 22, a right claw 23 and a claw return spring 21, wherein the life claw 22 and the right claw 23 are installed on the cam base 23.
With reference to
The process is that: Firstly the driving rod A moves rightwards so that the left claw 22 is ejected upwards to engage to the ratchet ring 2 so as to drive the cam base 24 to rotate. When the cam base 24 rotates, an axial cam pushes the left actuating sliding block 26 to leave from the left gear 28 so that the left gear 28 is free. Then the left sliding block returning spring 27 is compressed so that the left actuating sliding block 26 is ejected by the cam base 24 to move leftwards further.
The cam base 24 rotates continuously so that the by the driving of the right sliding block returning spring 27′, the right actuating sliding block 26′ returns to right side. As a result, the right gear 29 is engaged with the right actuating sliding block 26′.
By above mentioned action as illustrated in
With reference to
With reference to
Referring to
For embodiment illustrated in
The control claw actuating seat 391 forms a center through hole 395. An end of the driving rod B is positioned at the center through hole 395 of the control claw actuating seat 391. The end of the driving rod B forms a protruded portion 105.
The object of the control unit serves to control the closing of the upper planet power ratchet claws 32. With reference to
As shown in
As illustrated in the drawing, initially, the driving rod B is at the left side of the control claw actuating seat 391, at this moment, the upper planet ratchet claws 32 opens and the right control claws 37 closes.
The action for closing the upper planet power ratchet claw 32 is that: the driving rod B moves transversally from a position locating one of the left control claws 36 to a position locating one of the right control claws 37 (referring to
Rotation of the ratchet claw control panel 35 causes the upper planet power ratchet claw 32 closes. Then the one of the left control claws 36 leaves by the action of the rotation ring 3 which rotates so as to leave from the notch 392 of the control claw actuating seat 391, while the one of the right control claws 37 moves to the notch 392 of the control claw actuating seat 391 to be supported by the driving rod B.
With reference to
A driving rod B is installed on a center shaft 10 of an internal clutch 1. A control claw fixing base 40 and a rotation ring 4 are installed on outside of the center shaft 10. The center shaft 10 has at least one guide recess 101 for receiving the driving rod B. The control claw fixing base 40 is positioned at a center of the rotation ring 4. The control claw fixing base 40 is fired with center shaft 10. A control claw shaft 401, a control claw returning spring 49, a left control claw 471 and a right control claw 481 are installed on the control claw fixing base 40. a plurality of upper planet power ratchet claws 42, a plurality of lower planet power ratchet claws 43 and a plurality of controlling claw shafts 41 are installed on the rotation ring 4.
The control claw fixing base 40 forms a center through hole 405. An end of the driving rod B is positioned at the center through hole 405 of the control claw fixing base 40. The end of the driving rod B forms a protruded portion 105.
An auxiliary claw 46 is installed between the left limiting panel 47 and the rotation ring 4. As illustrated in the drawing, the control claw fixing base 40 and the rotation ring 4 are at initial positions. In an initial state, the driving rod B is at a position (left side) locating the left control claw 471 and the left control claw 471 is supported by the driving rod B and is not engaged with the ratchet claw control panel 45. At this time, the right control claw 481 is stopped by the auxiliary claw 46 and the right limiting panel 48 and cannot engage the ratchet claw control panel 45. Therefore, the ratchet claw control panel 45 is motionless and has no function of changing speed. When the driving rod B moves, it states to change speed. The operation is illustrated in
Referring to
As the rotation ring 4 rotates continuously so that the ratchet claw control panel 45 to control the upper planet power ratchet claw 42 to rotate leftwards. Therefore, the upper planet power ratchet claw 42 closes and to leave from a groove 451 at the ratchet claw control panel 45.
When the upper planet power ratchet claw 42 leaves from the groove 451 at the ratchet claw control panel 45, the rotation ring 4 rotates continuously. The auxiliary claw 46 is closed by a track 402 of the rotation ring 4 so that the left control claw 471 returns to a leaving state, that is, the left control claw 471 is prohibited to engaged with the ratchet claw control panel 45. Then the driving rod B is at the position (right stop position) locating the right control claw 481 to resist the right control claw 481 so as to complete a speed changing action.
With reference to
In this embodiment, a driving rod C is installed on a center shaft 10 of an internal clutch 1. A radial control cam ring 55 and an axial control cam ring 56 are installed on an outer side of the center shaft 10. The center shaft 10 has at least one guide recess 101 for receiving the driving rod C. A spacing ring 57 is installed between the radial control cam ring 55 and the axial control cam ring 56. A power rotation unit 5 is installed with a sliding ring 51 which is used as a linking device. A plurality of axial springs 52 are installed between an outer side of the sliding ring 51 and the rotation unit 5. An interior of the sliding ring 51 is installed with a plurality of pins 54 and a plurality of radial spring 53. Each of the pins 54 is connected to a respective one radial spring 53. The interior of the sliding ring 51 forms a plurality of installing holes 511. Each of the radial springs 53 is installed in a respective one installing hole 511. Each of the pins 54 is positioned between a respective one radial springs 53 and the radial control cam ring 55. The radial control cam ring 55 and the axial control cam ring 56 are installed at an inner side of the sliding ring 51.
The radial control cam ring 55 forms a center through hole 555. The axial control cam ring 56 forms a center through hole 565. The spacing ring 57 forms a center through hole 575. The driving rod C runs through the center through hole 565 of the axial control cam ring 56 and the center through hole 575 of the spacing ring 57. An end of the driving rod C is positioned at the center through hole 555 of the radial control cam ring 55. The end of the driving rod C forms a protruded portion 105.
When the driving rod C moves to and retained at the radial control cam ring 55, the pins 54 originally positioned to the radial control cam ring 55 are ejected outwards and are driven by the axial springs 52 to move to a left side of the axial control cam ring 56. Therefore, the sliding ring 51 and the axial control cam ring 56 rotate with the rotation unit 5, as those shown in
Similarly, when the driving rod C moves to and retained at the axial control cam ring 56, each of the pins 54 is ejected inwards by the respective one radial spring 53 and engages to the radial control cam ring 55. Therefore, the sliding ring 51 and the radial control cam ring 55 rotate with the rotation unit 5, as those shown in
In summary, in the control unit of an internal clutch, by power rotating components (such as input rings, inner gears planet frames, output rings, etc.) which rotates as the internal clutch and cam or cam-like component, clutching components are controlled, such as to control the fixing of a sun gear, to control the engagements of the internal gear and planet gear. That is, using a cam or cam-like components to drive a driven device to rotate or displace so as to control the clutch to change gears
The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
The present invention is an application of continuation in part (CIP) of U.S. patent application Ser. No. 16/984,127, filed at Aug. 3, 2020, which is invented by and assigned to the applicant of the present invention, and thus the contents of the U.S. patent application Ser. No. 16/984,127 are incorporated into the present invention as a part of the present invention.
Number | Date | Country | |
---|---|---|---|
Parent | 16984127 | Aug 2020 | US |
Child | 17696897 | US |