TWI565622B - The lever control system of the internal transmission control mechanism - Google Patents

Description

Lever control system for internal transmission control mechanism

A lever control system suitable for a bicycle internal transmission control mechanism, in particular, a lever for controlling each control unit of a control mechanism of an internal planetary gear system of an internal transmission, in which the movement trajectory of each lever is on the same cam (eg: shaft The track is formed on the plane cam, the radial cam, the inner cam, the outer cam or the cam-like type, and the track of the cam is sequentially rotated to achieve the clutch shifting function of each control unit in sequence.

The technical creation of the internal transmission of the bicycle is generally known, such as the related announcement No. M415071 "Internal transmission type road bicycle", the announcement No. I323232 "Bicycle 16-speed internal transmission device", Announcement No. M341648 "Tooth of the bicycle internal transmission" "Disc structure", Announcement No. I296256 "For internal transmissions for bicycles", Announcement No. I285613 "Bicycle nine-speed internal transmission device", Announcement No. I277561 "In-vehicle transmission", Announcement No. M282914 "Bicycle within five speeds "Transmission device", Announcement No. 492932 "Indoor bicycle transmission (additional one)", Announcement No. 464623 "Indoor bicycle transmission", Announcement No. 410206 "Bicycle automatic internal transmission system", Announcement No. 392661 "Speed change of bicycle internal transmission "Main body", Announcement No. 390325 "In-wheel shifting device for electric bicycles", "No. 360185" "Speed change control mechanism for bicycle internal transmission" and "No. 330544 "In-bike internal shifting mechanism".

However, it can be seen from the above prior art creation documents that the control mechanisms of the known internal transmissions are not only complicated in structure, but also have the problems of large volume, heavy weight and high cost. At the same time, it also causes the sensitivity and speed of the transmission in the actual operation of the shifting speed, and these shortcomings also directly reduce the internal transmission and the overall bicycle quality reduction, so in the structural design of the relevant bicycle internal transmission, the industry continues Strive for innovation and breakthrough.

In the design of the bicycle transmission, in addition to the use of the gears in the internal transmission mechanism and the innovation of the path design, the technical design of the design of the lever control system and the structural components of the relevant control mechanisms inside the internal transmission are more related to the whole. The structure, weight, cost of the internal transmission and the sensitivity and accuracy of the shifting operation; therefore, the creator of the case has also developed the invention patent No. 145950 "Bicycle internal transmission" and its additional patent publication No. 492932 "Bicycle internal transmission ( Add a) to improve the actual use efficiency of the internal transmission and industrial economic utilization. Based on the continuous improvement of technological progress and industrial utilization, there is also room for innovation in the creation of related control and space, component quantity, cost and weight, in order to improve the quality and practical use of patent creation technology. Sex.

Therefore, how to further technological innovation, in order to achieve a streamlined structure, light weight, low cost, high speed shifting sensitivity, fast shifting speed, high accuracy of the internal transmission control mechanism, is an urgent need for the relevant bicycle industry to improve technology And the goal of innovation breakthrough.

The creation of this case is a lever control system suitable for the internal transmission control mechanism of bicycles. Its purpose is to:

1. Providing a lever control system with a simple structure, few components and a small internal control mechanism of the transmission, effectively achieving the effect of saving space and reducing overall weight.

2. Reduce industrial costs and improve overall industry output.

3. Effectively simplify the control mechanism of the bicycle internal transmission, improve the efficiency of assembly and maintenance, and thus improve Industrial utilization and economic efficiency.

4. Providing a shifting trajectory of the levers of each control unit of the internal control mechanism of the internal transmission, and performing a track for controlling the movement of each of the levers on the same cam, and sequentially rotating the tracks of the cam to accurately generate the accuracy of each of the levers Displacement and clutch shift control function of each control unit inside the internal transmission.

The creation feature of the present invention is that the internal transmission is provided with at least one planetary gear system and a control mechanism corresponding to the planetary gear system, and the control mechanism includes a control unit for controlling the input power of the carrier or the internal gear, and controlling the sun gear fixing and No control unit and a control unit for controlling the output power of the planet carrier or the internal gear; the control sequences for shifting the above control units are sequentially arranged in a non-overlapping manner, and the shift lever control trajectories of the respective control units are A cam (such as an axial plane cam, a radial cam, an inner cam, an outer cam or a cam-like type) is formed as a track to achieve the rotation of the cam in accordance with the order of the track, thereby achieving accurate displacement of each of the levers. The clutch of each corresponding control unit switches the shifting function.

1, 2, 3‧‧ ‧ lever

4‧‧‧ planar cam

C1, C2, C3‧‧‧ control unit

A‧‧‧ planet carrier

R‧‧‧ internal gear

Fig. 1 is a cross-sectional view showing an embodiment of the present invention.

Figure 2: This is a schematic diagram of an embodiment of a planetary gear set with five stages of shifting.

Fig. 3 is a list of control sequence of the number of control segments of each control unit in the present embodiment.

Figure 4: A simplified representation of Figure 3.

Figure 5: Schematic diagram of the trajectory embodiment of the creation.

Figure 6: Schematic diagram of another embodiment of the trajectory of the present creation.

Referring to FIG. 1 , an embodiment of a shift lever control system for an internal transmission control mechanism is provided. The internal transmission is provided with at least one planetary gear system and a control mechanism corresponding to the planetary gear system. The utility model comprises: a control unit C1 for controlling the input power of the carrier A or the internal gear R, a control unit C2 for controlling the fixing of the sun gear, and a control for controlling the output power of the carrier A or the internal gear R Unit C3. The main focus of this creation is: control the levers 1, 2, 3 of each control unit on the same cam 4, according to the track made by the displacement track of each lever, to accurately drive the levers 1, 2, The exact displacement sequence of 3, and the shifting function of accurately controlling the corresponding control units C1, C2, C3 for clutch switching by one cam for each of the levers 1, 2, 3 is achieved; and the cam 4 can be an axial plane The cam, the radial cam, the inner cam, the outer cam or the cam-like, the drawing and the description of the present invention are described by taking the axial plane cam of the preferred embodiment as an example, but the camming created by the present invention is not limited thereby; The displacement track of the lever can be the left and right displacement trajectory, the upper and lower displacement trajectory, and the angular rotation trajectory. The diagram and description of the case are illustrated by taking the left and right displacement trajectory of the lever as an example, but this does not limit the application of the creation of the case.

Please refer to FIG. 2, which is a schematic diagram of an embodiment of a planetary gear set capable of providing five-speed shifting. The control unit C1 is shown to control the clutch switching control of the input power of the carrier A or the internal gear R, thereby controlling the carrier A. Or the internal gear R inputs the shifting input path of the power; the control unit C2 is used to control the shifting of the shifting path of the sun gear; or the control unit C3 is used to control the shifting output path switching of the output power of the carrier A or the internal gear R. The number of shifting sections of each of the control units C1, C2, and C3 is sequentially arranged as shown in the graph of FIG. 3, and A of the control unit C1 is further defined as O, and R is X; and S1 of the control unit C2 is O, S2. It is X; A of control unit C3 is O, and R is X, and a chart as shown in Fig. 4 is obtained.

According to the chart shown in Figure 4, three control units C1, C2, C3 can be converted into An ideal state that can be controlled by one component (as shown in Fig. 5), wherein the authoring control units C1, C2, and C3 can be used as long as the order of control conforms to the order of the tour of OOOXXX, and the order of the sequences is not overlapped. At the same time, in practical application, the control units C1, C2, C3 can be simplified, that is, the stroke wheel is not used, so the five-speed shifting can be simplified into two-stage or three-stage shifting, that is, no S2 and control unit C2 No, it can be implemented as a three-stage shift. According to this principle, it can also be expanded into two or more five-speed planetary gear systems. Taking two sets of implementations as an example, it is possible to control the two components (cam 4) to achieve 5x5=25-speed shift control. effect.

Referring to the embodiment shown in FIG. 1 , the control points of each control unit C1, C2, and C3 are controlled by left and right traverse, and the planar cam 4 (for example, axial plane cam) is controlled as an example to control each control unit C1. , C2, C3 lever 1, 2, 3, each of the levers 1, 2, 3 to move left and right to its stroke, taking the above principle as an example, the left and right movement of each of the levers 1, 2, 3 is left O right X (as shown in Fig. 4), using the trajectory shown in Fig. 5 to form the track of the planar cam 4, by means of the rotation of a planar cam 4 (i.e., the orbital rotation), the respective levers 1, 2, 3 According to the position corresponding to the orbital rotation, the accurate left and right lateral displacement of each of the levers is generated to generate a clutch switching shift function for controlling each of the control units C1, C2, and C3. The actuating rotation of the planar cam 4 can be selected and utilized by means of a reel or electric motor.

The above embodiments are merely examples for fully illustrating the creation of the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art based on the creation of the present technology are within the scope of protection of the present invention.

1, 2, 3‧‧ ‧ lever

4‧‧‧ planar cam

C1, C2, C3‧‧‧ control unit

Claims (3)

A lever control system for an internal transmission control mechanism, wherein the internal transmission is provided with at least one set of planetary gear systems and a control mechanism corresponding to the set of planetary gear systems, the control mechanism comprising: for controlling the planetary carrier or the internal gear input a control unit for switching the power shift input path, a control lever for operating the control unit to perform clutch switching, a control unit for switching the shift path for controlling the fixing of the sun gear, and a lever for operating the control unit for clutch switching, and a control unit for controlling a shifting output path of the planetary carrier or the internal gear output power, and a shift lever for operating the control unit to perform clutch switching; characterized in that: a shifting input for controlling the input power of the carrier or the internal gear in the control mechanism a lever of a control unit of the path switching, a lever of a control unit for controlling the switching of the shifting of the sun gear, and a lever of a control unit for switching the output of the shifting path for controlling the output power of the carrier or the internal gear The control sequence of each control unit is controlled by the steps of the patrols without overlapping each other. Column, and on the same cam track according to the respective displacement lever is made of rails, to accurately drive the displacements of the order of the lever. According to the shift control system of the transmission control mechanism according to the first aspect of the patent application, wherein the planetary gear system inside the internal transmission can be more than one set, and the planar cam that controls the shift lever of more than one planetary gear system is also Can be more than one. The lever control system of the transmission control mechanism according to the first aspect of the patent application, wherein the cam may be an axial plane cam, a radial cam, an inner cam, an outer cam or a cam-like.