TWI549860B - Non-chain multi - stage transmission - Google Patents

Description

Chainless multi-speed shifting device

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a shifting device, and more particularly to a chainless multi-speed shifting device that can be assembled on various bicycles without causing a problem of a chain and a chain.

In order to promote bicycles with environmental protection, fitness, leisure, transportation, commuting, education and other functions, since 1956, the United States Cycling Knights Union has promoted bicycle activities, which will be designated as a bicycle month in May, and the third week in May will be Cycling week, the third Friday is the bicycle work day. After the United States first opened the precedent, the bicycle cyclone began to sweep across the globe, and countries around the world responded.

Walking on the road, you can clearly see more "cyclists", bicycle leisure sports everywhere, and become the emerging national movement of all countries.

Because of this, more and more operators are developing and launching a variety of new bicycles, but the main transmission method is the same as the transmission method of traditional bicycles, which use the chain to connect the pedal sprocket and the rear sprocket. In order to perform power transmission, it is well known that the chain and the gear transmission mode are prone to problems such as chain shedding, chain jamming, chain and chain tooth wear, etc., and pants and skirts are often chained and The sprocket is broken and there is some inconvenience and trouble in riding.

Therefore, some manufacturers have developed bicycles with no chain transmission, but such bicycles are generally driven at a single speed. When riding on a slope, they are unable to provide a shifting effect, so they cannot compete with conventional bicycles with a chain.

In view of this, how to solve the above problems, develop a kind of self-matching For the vehicle assembly application, the chainless multi-segment shifting device which does not have problems such as card chain and chain detachment becomes the idea and research topic of the creator of the present invention.

SUMMARY OF THE INVENTION An object of the present invention is to provide a chainless multi-speed shifting device which can be used in various bicycle assembly applications without problems such as a card chain or a chain.

In order to solve the above problems and achieve the object of the present invention, the technical means of the present invention is realized as a chainless multi-speed transmission device comprising: a ratchet shaft (200) disposed on the rear wheel (100) of the bicycle. a shifting device (10); and a driving device (20) connected at one end to the shifting device (10) for driving the shifting device (10); wherein the shifting device (10) includes a shifting device (10) a follower (1) disposed on the ratchet shaft (200) and having an outwardly extending first elongated hole (11) at an edge thereof; one disposed on the ratchet shaft (200) and located at the follower ( 1) a driving member (2) for driving the follower (1); and a control device for engaging with the driving member (2) to control the increase or decrease of the moment of inertia of the driving member (2) (3) The driving member (2) includes a ratchet wheel (21), the ratchet wheel (21) is sleeved on the outer wall surface of the ratchet shaft (200), and the edge of the side wall of the ratchet wheel (21) a second long hole (211) corresponding to the first long hole (11) is disposed outwardly, and a side of the second long hole (211) is provided with a C-shaped positioning member (22). a third long hole (221) corresponding to the first and second long holes (11, 211) is disposed on the side wall surface of the positioning member (22), and the top surface and the bottom surface of the positioning member (22) are respectively respectively a through hole (222) is disposed, and a screw (23) is pivotally disposed between the upper and lower two through holes (222), and the screw (23) is provided with a first, second, and third elongated holes (11, 211, 221) a slider (24) for driving the follower (1), and the top end of the screw (23) has a meshing with the control device (3) and can control the screw (23) a gear carrier (231) for shifting up and down of the slider (24); the control device (3) comprising a control piece (31) capable of engaging with the gear base (231) in a U shape, the control piece The two ends of (31) are respectively provided with a dial piece (32) capable of controlling the rotation of the gear base (231), and one side of the control piece (31) is provided for being coupled with the bicycle frame. And the fixing frame (33) can be fixed to the control piece (31); therefore, when the driving device (20) drives the driving member (2) to rotate, the gear seat (231) passes through the control piece (31). Rotating by the dial piece (32), and simultaneously forcing the screw (23) to drive the slider (24) to move up and down, when the slider (24) moves to the top, the shifting device (10) The moment of inertia is increased. Conversely, when the slider (24) is moved downward, the moment of inertia of the shifting device (10) is reduced, whereby the speed of the bicycle is increased due to the moment of inertia when the rider pedals with the same force. Or change and change.

More preferably, the driving device (20) further includes a driving plate (201) pivotally coupled with the pedal of the bicycle and having a plurality of engaging holes (202) on the surface ring; one end and the driving plate (201) a link mechanism (203) meshing and having at least one universal joint (204); a first gear (205) disposed at one end of the link mechanism (203) and engaged with the meshing hole (202) a second gear (206) disposed at the other end of the link mechanism (203); and a driven plate (207) meshing with the second gear (206) and having a plurality of holes (208) in the surface ring.

More preferably, one end of the control device (3) is further connected with a bicycle wire (4), and the other end of the bicycle wire (4) is further provided with a left and right movement capable of operating the control piece (31). Or control device lever (5) for resetting.

More preferably, the ratchet (21) is provided by a set of driven ratchets (212) disposed on the ratchet shaft (200), and a corresponding one of the driven ratchets (212) and meshed with each other. The drive ratchet (213) is composed of.

Compared with the prior art, the functions and effects of the present invention are as follows:

The first point: the invention mainly operates the control device (3) to operate the driving member (2) and the follower (1) to increase or decrease the moment of inertia to change the speed, thereby achieving no need for the sprocket It can be used for multi-speed shifting, so there are no problems with the card chain and the chain.

The second point: the invention can be assembled and used with various bicycles, without changing the structure of the vehicle body, and can be matched with the frame and the ratchet of the original bicycle, without replacing the frame and the ratchet, It has good applicability, achieves cost reduction, economical and practical value, and breaks through the limitations of the unique frame without the chain-type multi-speed transmission.

1‧‧‧ Followers

33‧‧‧ Fixing frame

11‧‧‧First long hole

2‧‧‧ Drives

21‧‧‧ ratchet

211‧‧‧Second long hole

212‧‧‧driven ratchet

213‧‧‧ drive ratchet

22‧‧‧ Positioning parts

221‧‧‧ third long hole

222‧‧‧Perforation

23‧‧‧ screw

231‧‧‧ Gear seat

24‧‧‧ Slider

3‧‧‧Control device

31‧‧‧Control film

32‧‧‧Turning piece

4‧‧‧Bicycle wire

5‧‧‧Control device lever

10‧‧‧Transmission

20‧‧‧ drive

201‧‧‧ drive disk

202‧‧‧Meshing holes

203‧‧‧ linkage mechanism

204‧‧‧ universal joint

205‧‧‧First gear

206‧‧‧second gear

207‧‧‧ driven disk

208‧‧‧ hole

100‧‧‧ bicycle rear wheel

200‧‧‧ratchet shaft

Figure 1 is a perspective view of the present invention.

Figures 2 and 3: exploded schematic views of the present invention.

Figures 4 to 6 are schematic views showing the operation of the present invention.

Figure 7 is a perspective view of the present invention in combination with a bicycle.

The following is a detailed description of the following embodiments according to the drawings: as shown in the first to seventh figures, the figure discloses a chainless multi-speed shifting device, which comprises: a bicycle rear wheel (100) a shifting device (10) on the ratchet shaft (200); and a driving device (20) connected at one end to the shifting device (10) for driving the shifting device (10); wherein the shifting device 10), comprising a follower (1) disposed on the ratchet shaft (200) and having an outwardly extending first elongated hole (11) at the edge; one disposed on the ratchet shaft (200), a driving member (2) on a side of the follower (1) for driving the follower (1); and a meshing with the driving member (2) to control the driving member (2) a control device (3) for increasing or decreasing the moment of inertia of the shifting device (10); the driving member (2) comprising a ratchet (21), the ratchet (21) being sleeved on the ratchet shaft (200) An outer wall surface, and an edge of the sidewall surface of the ratchet wheel (21) extends outwardly from a second long hole (211) corresponding to the first long hole (11), and the second long hole (211) One side has a C word The positioning member (22), the side wall surface of the positioning member (22) is provided with a third long hole (221) corresponding to the first and second long holes (11, 211), and the positioning member (22) The top surface and the bottom surface of the end are respectively provided with a through hole (222), and a screw (23) is pivotally disposed between the upper and lower two through holes (222), and the screw (23) is provided with a first through the second, the second Three long holes (11, 211, 221), a slider (24) for driving the follower (1), and the top end of the screw (23) has a slider engaged with the control device (3) and capable of controlling the screw (23) ( 24) a gear carrier (231) that is displaced up and down; the control device (3) includes a control piece (31) that is engageable with the gear base (231) and has a U-shape, the control piece (31) The two ends of the control piece (31) are respectively provided with a dial piece (32) for controlling the rotation of the gear base (231), and one side of the control piece (31) is provided for being coupled with the bicycle frame and can be provided for the control piece (31). a fixed holder (33); the ratchet (21) is provided by a set of driven ratchets (212) disposed on the ratchet shaft (200), and a corresponding one of the driven ratchets (212) And the intermeshing drive ratchet (213) is composed.

Through the implementation of the above structure, when the driving device (20) drives the driving member (2) to rotate, the gear holder (231) passes through the control piece (31) and is rotated by the dialing piece (32). And at the same time forcing the screw (23) to drive the slider (24) to move up and down, when the slider (24) moves to the top, the moment of inertia of the shifting device (10) is increased, otherwise, the slider (24) When moving to the lower side, the moment of inertia of the shifting device (10) is reduced, whereby when the rider steps on with the same force, the speed of the bicycle changes due to an increase or decrease in the moment of inertia.

Secondly, the variable length of the shifting device (10) can be amplified or reduced by the length of the screw (23). When the length of the screw (23) is longer, the slider (24) is displaced up and down. The range of the shifting device (10) is relatively large, and conversely, as the length of the screw (23) is shorter, the range of the upper and lower displacement of the slider (24) is reduced. The number of variable segments of the shifting device (10) is relatively small.

Furthermore, through the design of the ratchet (21) and the fixed frame (33), the shifting device (10) can be assembled with various bicycles without changing the structure of the vehicle body, and can be arranged with the frame and the ratchet of the original bicycle without replacement. The frame and the ratchet have good applicability, reduce the cost and increase the economic and practical value, and break through the limitations of the unique frame without the chain-type multi-speed transmission.

The driving device (20) further includes a driving disc (201) pivotally coupled with the pedal of the bicycle and having a plurality of engaging holes (202) on the surface ring; one end is engaged with the driving disc (201) and has a link mechanism (203) of at least one unidirectional joint (204); a first gear (205) disposed at one end of the link mechanism (203) and engaging the meshing hole (202); a second gear (206) at the other end of the rod mechanism (203); and a driven plate (207) that engages with the second gear (206) and has a plurality of holes (208) in the surface ring.

The power generated when the driving disk (201) is driven can be transmitted to the second gear (206) by the first gear (205) and the link mechanism (203), and then driven. The driving member (2) and the driven member (1) are rotated to achieve overall power transmission of the bicycle.

One end of the control device (3) is further connected with a bicycle wire (4), and the other end of the bicycle wire (4) is further provided with a control device operating lever (5).

Wherein, the control piece (3) can control the left and right movement or reset by the control device operating lever (5), so when the driving member (2) rotates through the control piece (31), the driving member (2) The gear base (231) is toggled by the dial piece (32), forcing the screw (23) to drive the slider (24) to move up and down, thereby changing the follower (1) to make the shifting device (10) The increase or decrease of the moment of inertia is used to change the speed to achieve the function of shifting without the need of a chain gear, so there is no problem such as a card chain or a chain.

The structure, features and effects of the present invention are described in detail above with reference to the embodiments shown in the drawings. However, the above description is only the preferred embodiment of the present invention, but the present invention does not limit the scope of implementation as shown in the drawings. Modifications in accordance with the meaning of the present invention are intended to fall within the scope of the invention as long as they are within the scope of the invention.

1‧‧‧ Followers

2‧‧‧ Drives

212‧‧‧driven ratchet

213‧‧‧ drive ratchet

23‧‧‧ screw

231‧‧‧ Gear seat

24‧‧‧ Slider

3‧‧‧Control device

31‧‧‧Control film

33‧‧‧ Fixing frame

4‧‧‧Bicycle wire

10‧‧‧Transmission

20‧‧‧ drive

201‧‧‧ drive disk

202‧‧‧Meshing holes

203‧‧‧ linkage mechanism

204‧‧‧ universal joint

100‧‧‧ bicycle rear wheel

200‧‧‧ratchet shaft

Claims (4)

A chainless multi-speed shifting device comprising: a shifting device (10) disposed on a ratchet shaft (200) of a bicycle rear wheel (100); and an end coupled to the shifting device (10) for driving the shifting a driving device (20) for rotating the device (10); characterized in that: the shifting device (10) includes a first long hole extending from the ratchet shaft (200) and having an outwardly extending edge at the edge ( 11) a follower (1); a drive member (2) disposed on the ratchet shaft (200) on the side of the follower (1) for driving the follower (1); And a control device (3) that engages with the driving member (2) to control the driving member (2) to increase or decrease the moment of inertia of the shifting device (10); the driving member (2) includes a ratchet (21), the ratchet wheel (21) is sleeved on the outer wall surface of the ratchet shaft (200), and an edge of the side wall surface of the ratchet wheel (21) extends outwardly from the first long hole (11). Correspondingly disposed a second long hole (211), one side of the second long hole (211) is provided with a C-shaped positioning member (22), and the side wall surface of the positioning member (22) is provided with a first The second long hole (11, 211) corresponds a third long hole (221), and a top surface and a bottom surface of the positioning member (22) are respectively provided with a through hole (222), and a screw (23) is pivotally disposed between the upper and lower two holes (222). (23) is provided with a slider (24) passing through the first, second, and third elongated holes (11, 211, 221) for driving the follower (1) to rotate, and the screw (23) The top end has a gear base (231) that meshes with the control device (3) and can control the upper and lower displacement of the slider (24) on the screw (23); the control device (3) The utility model comprises a control capable of engaging with the gear base (231) and having a U-shape The tablet (31) is provided with a dial piece (32) for controlling the rotation of the gear base (231) at both ends of the control piece (31), and a control unit (31) is provided with a bicycle and a bicycle a holder (33) that is coupled to the support piece (31); therefore, when the driving device (20) drives the driving member (2) to rotate, the gear holder (231) passes through the control piece ( 31) is rotated by the dial piece (32), and at the same time forces the screw (23) to drive the slider (24) to move up and down, and when the slider (24) moves to the top, the shifting device The moment of inertia of (10) is increased. Conversely, when the slider (24) is moved downward, the moment of inertia of the shifting device (10) is reduced, whereby the speed of the bicycle is rotated by the rider when pedaling with the same force. The inertia increases or decreases and changes. The chain-less multi-speed shifting device of claim 1, wherein: the driving device (20) further comprises a pivotal linkage with the pedal of the bicycle, and the surface ring is provided with a plurality of engaging holes (202). a driving disc (201); a connecting rod mechanism (203) having one end engaged with the driving disc (201) and having at least one universal joint (204); one end disposed at the connecting rod mechanism (203) and engaging with the engaging hole (202) a meshing first gear (205); a second gear (206) disposed at the other end of the link mechanism (203); and a meshing engagement with the second gear (206) and having a plurality of holes in the surface ring The driven disk (207) of (208). The chainless multi-speed shifting device of claim 1, wherein: one end of the control device (3) is further connected with a bicycle wire (4), and the other end of the bicycle wire (4) is further provided with a device. The control unit operating lever (5) for operating the control piece (31) for left and right movement or resetting is operated. The chainless multi-speed shifting device of claim 1, wherein: the ratchet (21) is a set of driven ratchets (212) provided on the ratchet shaft (200), and a slave The movable ratchet (212) is correspondingly disposed, and the intermeshing driving ratchet (213) is composed.