Patent Application
20220034373
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 a interior clutch-used control mechanism comprises a first control unit for controlling the fixedness of a sun gear; a second control unit for controlling engagements of inner gears at two sides and a planet frame; a third control unit for controlling the sun gear or the inner gears and the planet frame; and wherein power for control units are from rotary dynamic components, by displacements of driving rods for controlling operations of a cam or cam-like component; by using the cam or cam-like unit to function clutch or by using the cam or cam-like unit to drive a driven device to rotate or displace for operation of the clutch.
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
As illustrated in the drawing, initially, the driving rod B or C is at left side, at this moment, the upper planet ratchet claw 32 opens and the right control claw 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 the left control claw 36 to a position locating the right control claw 37 (referring to
Rotation of the ratchet claw control panel 35 causes the upper planet power ratchet claw 32 closes. Then the left control claw 36 leaves by the action of the rotation ring 3 which rotates so as to leave from the notch of the control claw actuating seat 391, while the right control claw 37 moves to a notch to be supported by the driving rod B or C.
With reference to
In this embodiment, a driving rod B, a control claw fixing base 40 are installed on outside of a center shaft of the internal clutch. 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. An upper planet power ratchet claw 42, a lower planet power ratchet claw 43 and a ratchet claw returning spring 44 are installed on the rotation claw 4. A ratchet claw control panel 45 is installed below the ratchet claw. A left limiting panel 47, a right limiting panel 48 and an auxiliary claw returning spring 461 are installed at two sides below the ratchet claw control panel 45.
An auxiliary claw 46 is installed between the left control 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. The driving rod B is at a left side and the left control claw is supported by the driving rod B. The ratchet claw control panel 45 is not engaged. 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 cam of the upper planet power ratchet claw 42 to move leftwards. Therefore, the upper planet power ratchet claw 42 closes and to leave from the upper planet power ratchet claw 42.
After leaving from the upper planet power ratchet claw 42 and the rotation ring 4 rotates continuously. The auxiliary claw 46 is closed by the track of the rotation ring 4 so that the left control claw 47 returns to the leaving state. Then
the driving rod B is at the right stop position to resist the right control claw 481 so as to complete a change speed action.
With reference to
In this embodiment, a driving rod C, a radial control cam ring 55, an axial control cam ring 56 are installed on an outer side of a center shaft of the internal clutch. 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. An axial spring 52 is 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 pin 54 and a radial spring 53. By the displacement of the sliding ring 51, the pin 54 is moved to be retained to the radial control cam ring 55 or to the axial control cam ring 56 so as to achieve the object of clutching of the radial clutching effect or axial clutching effect.
When the driving rod C moves to and retained at the radial control cam ring 55, the pin 54 originally positioned to the radial control cam ring 55 is ejected upwards. By the axial spring 52, the sliding ring 51 moves rightwards. Then the sliding ring 51 and the axial control cam ring 56 rotates 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.
