TWM495993U - Sprocket assembly and sprocket device using same - Google Patents

Description

Sprocket assembly and sprocket device using the same

The present invention relates to a sprocket, and more particularly to a sprocket assembly and a sprocket device using the sprocket assembly for mounting on a wheel hub of a bicycle rear wheel.

According to the wheel hub of the bicycle rear wheel, a plurality of sprocket wheels of different diameters are mounted, and the chain can be selectively engaged with one of the sprocket wheels through the derailleur to achieve different gear ratios.

No. DE 10 2012 006 771.2, which has a sprocket assembly having a plurality of sprockets of different diameters and different numbers of teeth, wherein the largest diameter sprocket engages one end of the actuator and the remaining smallest diameter chain The wheel is relatively engaged with the external threaded structure where the internal thread is screwed, and the axially positioned portion of the actuator.

However, as shown in the patent drawings, the sprocket is a one-piece one-piece type, and the manufacturing cost is too high compared to the method of manufacturing a sprocket using a general single sheet, and is cumbersome and lightweight.

In order to solve the above conventional problems, the present invention discloses a sprocket assembly and a sprocket device using the sprocket assembly, wherein the sprocket combination system is sequentially stacked by a plurality of sprocket wheels of different diameters, and each The sprocket is made of a single flat material to reduce manufacturing costs; moreover, every two chains A connecting member is arranged between the wheels for transmitting the torque applied to each sprocket to the adjacent sprocket for the purpose of dispersing the force.

Therefore, in order to achieve the above object, the present invention provides a sprocket assembly, which is mounted on a sprocket mounting assembly, and the sprocket mounting assembly is mounted on a wheel hub of a bicycle rear wheel for sprocket assembly Engaging a chain, wherein the sprocket assembly comprises: a plurality of sprocket wheels of different diameters, which are axially stacked on the sprocket mounting assembly from large to small, and each of the sprocket wheels has a chain tooth for Selectively engaging the chain; and a plurality of connectors are respectively annularly coupled between each of the two sprockets.

In order to achieve the above object, the present invention also provides a sprocket device which is mounted on a bicycle rear wheel. The sprocket device includes: a driving body coupled to a wheel hub of a bicycle rear wheel for transmitting torque; The sleeve is screwed to the driving body at one end; a plurality of sprocket wheels of different diameters are stacked from the driving body to the adapter sleeve from the large to the small axial direction, and the peripheral edges of the sprocket wheels respectively have a chain tooth. For selectively engaging a chain; a plurality of connecting members are respectively annularly coupled between each of the two sprockets; and a fastener is screwed to the other end of the adapting sleeve for axial fixing Adapter sleeve.

Preferably, each of the connectors of the present invention is formed by a metal strip.

Preferably, the connectors of the present invention are disposed between every two adjacent sprockets from large to small.

Preferably, each of the sprocket wheels of the present invention is provided with a plurality of coupling holes, and the two sides of each of the connecting members are respectively engaged with the coupling holes, and the coupling holes are a perforation, and more preferably a circle hole.

Preferably, each of the connecting members of the present invention is provided with a plurality of blocks on the two sides equidistantly spaced apart from each other for engaging the engaging holes.

Preferably, the blocks of the present invention are bilaterally symmetrical, and each of the blocks is rectangular, and the long sides of each of the blocks are arranged along the rotation direction of the sprocket.

Preferably, the sub-large diameter sprocket to the sub-small diameter sprocket of the present invention is spliced through the two connecting members and the sprocket on both sides.

Thereby, the sprocket combination system is made of a plurality of sprocket wheels in a single flat material instead of being integrally formed, so that the manufacturing cost can be reduced, and further, the connecting members are respectively annularly coupled between each two sprocket wheels. In this way, the torque acting on each sprocket can be dispersed through the connected sprocket to strengthen the sprocket assembly's ability to withstand high torque.

100‧‧‧Sprocket device

1‧‧‧Sprocket mounting components

2‧‧‧Sprocket assembly

10‧‧‧ Driver

11‧‧‧First Spline

12‧‧‧First external thread

20‧‧‧Adapter sleeve

21‧‧‧Second spline

22‧‧‧First internal thread

23‧‧‧Second internal thread

30‧‧‧fasteners

31‧‧‧Second external thread

32, 33‧‧‧ small diameter sprocket

321, 331‧‧‧ sprocket

40~48‧‧‧Sprocket

400‧‧‧Snap hole

401~481‧‧‧ sprocket

402~482‧‧‧bond hole

50‧‧‧ bearing

60‧‧‧Connecting parts

61‧‧‧ card block

[Fig. 1] is an exploded view of the creation.

[Fig. 2] is a sectional view of the combination of the present creation.

FIG. 3 is an enlarged schematic view of FIG. 2.

[Fig. 4] is a side view of the sprocket assembly of the present invention, but does not include a sprocket of the smallest diameter.

[Fig. 5] is a schematic view of the appearance of the drive body of the present creation.

[Fig. 6] is a cross-sectional view of the adapter sleeve of the present invention.

[Fig. 7] is a side view of the fastener of the present invention.

[Fig. 8A] is a schematic view showing the appearance of the connector of the present invention.

[Fig. 8B] is a schematic view showing the appearance of the connector of the present invention, and the connector is not yet looped.

For the convenience of the description, the central idea expressed in the above-mentioned creation content column is expressed by a specific embodiment. The various items in the embodiments are set forth in proportion to the description and not in the

As shown in FIGS. 1 to 3, the sprocket device 100 of the present invention is an 11-segment shifting system for providing a better transmission effect. The sprocket device 100 includes a sprocket mounting assembly 1 and a sprocket assembly 2. The sprocket assembly 2 is mounted on the sprocket mounting assembly 1 and the sprocket mounting assembly 1 is mounted on a wheel hub of a bicycle rear wheel for selectively engaging a chain of the sprocket assembly 2, wherein the sprocket The mounting assembly 1 includes a driving body 10, an adapter sleeve 20 and a fastener 30, and the sprocket assembly 2 is composed of a plurality of sprocket wheels 40-48 of different diameters and a plurality of connecting members 60.

The driving body 10 is a conventional member and has a cylindrical shape, as shown in FIG. 5, and the driving body 10 has a first external thread 12 having a first spline 11 and a side thereof on the periphery, and the driving body 10 is A wheel hub coupled to the rear wheel of the bicycle for transmitting torque. Wherein, the inside of the driving body 10 has two bearings 50 at appropriate places to be supported on the rear wheel axle of the bicycle.

The adapter sleeve 20 is provided with a second spline 21 at the periphery. Further, the adapter sleeve 20 is respectively provided with a first internal thread 22 and a second internal thread 23 at both ends, as shown in FIG. The first internal thread 22 of the adapter sleeve 20 is screwed to the first external thread 12 .

As shown in FIG. 7, the fastener 30 has a second external thread 31 for screwing on the second internal thread 23 of the adapter sleeve 20 for axially fixing the adapter sleeve 20, and the fastener 30 The circumference has two small-diameter sprockets 32, 33, and the outer diameter of the small-diameter sprockets 33 is small, and the peripheral edges of the two small-diameter sprockets 32, 33 have the fastener elements 321, 331.

As shown in FIG. 2 to FIG. 4, the sprocket wheels 40-48 are axially stacked on the sprocket mounting assembly 1 from large to small. Preferably, the sprocket wheels 40-48 are axially large to small. The driving body 10 is stacked on the adapter sleeve 20, Wherein, the sprocket 40 has a larger diameter, the sprocket 48 has the smallest diameter, and the sprocket 48 corresponds to the two small-diameter sprockets 32, 33 of the fastener 30, and the small-diameter sprockets 32, 33 are smaller in diameter than the sprocket 48. In the present creation, the sprocket wheels 40-48 are respectively made of a single plate, and each of the sprocket wheels 40-48 has a concave-convex engaging hole 400 for the maximum and the second largest diameter sprocket 40, 41 card. The first splines 11 of the driving body 10 are coupled to the first splines 11 of the adapter body 10, and the sprocket wheels 42-48 are sequentially mounted to the second splines 21 of the adapter sleeve 20.

The sprocket 40~48 is provided with a chain tooth 401~481 for selectively engaging the chain, and the sprocket 40~48 is provided with a plurality of coupling holes 402~482, and the coupling holes 402~482 are annularly arranged. And implemented as a round hole in this creation, and further a perforation. It is worth mentioning that, except for the sprocket 40 of the largest diameter and the sprocket 48 of the smallest diameter, the other sprocket wheels 41-47 have two coupling holes 412-472.

As shown in FIG. 8A and FIG. 8B, each connecting member 60 is cut by a wire-cutting method through a continuous metal strip, and is fixed by welding at both ends of the connecting member 60, and is divided by a large to small ring. It is wound around each of the two sprockets 40~48. Each of the connecting members 60 is equidistantly disposed on the two sides of the connecting member 60 to be latched on the connecting holes 402-482, and the card 61 is bilaterally symmetrical, and each card is The long sides of the block 61 are arranged along the direction of rotation of the sprockets 40-48 so that each of the blocks 61 has a better structural strength to withstand the torque. In addition, the coupling holes 422 to 472 of the largest circle of the sprocket wheels 42 to 47 correspond to the coupling holes 412 to 462 of the smallest circle of the adjacent and larger diameter sprocket wheels 41 to 46 and are located on the same axis, and the sprocket The coupling hole 412 of the largest circle of 41 corresponds to only the coupling hole 402 of the sprocket 40 and is located on the same axis, and the coupling hole 482 of the sprocket 48 corresponds to the coupling hole 472 of the smallest circle of the sprocket 47 and is located on the same axis. In order to facilitate the aforementioned plurality of connecting members 60, according to the present invention, the second large diameter sprocket 41 to the second small diameter sprocket 47 have two connecting members 60 and the sprocket 40 on the left and right sides. ~48 card positioning.

Thereby, the sprocket assembly 2 is made of a plurality of sprocket wheels 40 to 48 in a single flat material instead of being integrally formed, so that the manufacturing cost can be reduced, and further, each sprocket has between 40 and 48 The connecting member 60 is annularly coupled between each of the two sprockets through the connecting member 60, so that the torque acting on each of the sprockets 40~48 can be dispersed and transmitted through the connected sprockets, thereby strengthening The sprocket assembly 2 is capable of high torque.

Although the present invention has been described in terms of a preferred embodiment, it is obvious to those skilled in the art that various changes can be made without departing from the spirit and scope of the invention. The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Any modification or change that is not in violation of the spirit of this creation is the scope of patent application for this creation.

100‧‧‧Sprocket device

1‧‧‧Sprocket mounting components

2‧‧‧Sprocket assembly

10‧‧‧ Driver

11‧‧‧First Spline

12‧‧‧First external thread

20‧‧‧Adapter sleeve

21‧‧‧Second spline

23‧‧‧Second internal thread

30‧‧‧fasteners

31‧‧‧Second external thread

32, 33‧‧‧ small diameter sprocket

40~48‧‧‧Sprocket

400‧‧‧Snap hole

472‧‧‧bond hole

482‧‧‧bond hole

60‧‧‧Connecting parts

Claims (25)

A sprocket assembly is mounted on a sprocket mounting assembly, and the sprocket mounting assembly is mounted on a wheel hub of a bicycle rear wheel for engaging the sprocket assembly with a chain, wherein the sprocket The assembly includes: a plurality of sprocket wheels of different diameters, which are axially stacked on the sprocket mounting assembly from large to small, each of the sprocket wheels having a chain tooth for selectively engaging the chain; A plurality of connectors are respectively annularly coupled between each of the two sprockets. The sprocket assembly according to claim 1, wherein each of the connecting members is wound by a metal strip. The sprocket assembly according to claim 1, wherein the connecting members are disposed between every two adjacent sprocket wheels as large as small. The sprocket assembly according to claim 1, wherein each sprocket is provided with a plurality of coupling holes, and the two sides of each connector are respectively latched to the coupling holes. The sprocket assembly of claim 4, wherein the coupling holes are each a perforation. The sprocket assembly according to claim 4, wherein each of the connecting members is equidistantly protruded on the two sides to form a plurality of blocks for engaging the coupling holes. The sprocket assembly according to claim 6, wherein the blocks are bilaterally symmetrical. The sprocket assembly according to claim 6, wherein the blocks are rectangular, and the coupling holes are circular holes. The sprocket assembly according to claim 8, wherein the long sides of each of the blocks are arranged along the rotation direction of the sprocket. The sprocket assembly according to claim 1, wherein the second largest diameter sprocket to the second small diameter sprocket are slid through the two connecting members and the sprocket on both sides. A sprocket device is mounted on a bicycle rear wheel. The sprocket device comprises: a driving body coupled to a wheel hub of the bicycle rear wheel for transmitting torque; and an adapter sleeve which is screwed at one end The plurality of sprocket wheels of different diameters are stacked from the driving body to the adapter sleeve from large to small axial direction, and each of the sprocket wheels has a chain tooth for selective Engaging a chain; a plurality of connecting members are respectively annularly coupled between each of the two sprockets; and a fastener is screwed to the other end of the adapting sleeve for axially fixing the transfer Sleeve. The sprocket device of claim 11, wherein the periphery of the driving body has a first spline for the sprocket of the largest diameter and the second largest diameter. The sprocket device of claim 12, wherein the first spline has a first external thread on one side, and the adapter sleeve is respectively provided with a first internal thread and a second internal thread at both ends. The first internal thread is screwed to the first external thread. The sprocket device of claim 12, wherein the circumference of the adapter sleeve has a second spline system for the remaining sprocket. The sprocket device of claim 13, wherein the fastener has a second external thread that is threaded from the second internal thread of the adapter sleeve. The sprocket device of claim 11, wherein the fastener periphery has two small-diameter sprockets having an outer diameter smaller than a minimum of the sprockets. The sprocket device of claim 11, wherein each of the connecting members is wound by a metal strip. The sprocket device according to claim 11, wherein the connecting members are disposed between every two adjacent sprockets from large to small. The sprocket device of claim 11, wherein each sprocket is provided with a plurality of coupling holes, and two sides of each connector are respectively latched to the coupling holes. The sprocket device of claim 19, wherein the plurality of coupling holes are each a perforation. The sprocket device of claim 19, wherein each of the connecting members is equidistantly disposed on the two sides of the plurality of latching blocks for engaging the engaging holes. The sprocket device of claim 21, wherein the blocks are bilaterally symmetrical. The sprocket device of claim 21, wherein the blocks are rectangular, and the coupling holes are circular holes. The sprocket device of claim 23, wherein the long sides of each of the blocks are arranged along the direction of rotation of the sprocket. The sprocket device according to claim 11, wherein the second largest diameter sprocket to the second small diameter sprocket are slid through the two connecting members and the sprocket on both sides.