TWI423899B - Flywheel and Drum Ratchet Construction - Google Patents

Description

Flywheel and hub ratchet structure

The invention relates to a flywheel and hub ratchet combination structure, and provides a flywheel With the ratchet ratchet structure, the flywheel set can be quickly assembled to prevent the flywheel set from being generated by the chain, which makes the flywheel set shift stable and smooth.

The bicycle hub and ratchet structure currently seen on the market is a stack of the toothed discs of the flywheel tooth set, and a spacer is arranged between each of the toothed discs, so that a gap is formed between the toothed disc and the toothed disc. For the distance, the toothed disc of the flywheel group is mainly combined with the ratchet on the hub, so that the ratchet and the hub can be driven when the flywheel rotates, so that the bicycle is moved, and the toothed disc of the bicycle flywheel stack is assembled to the ratchet. When it is up, the ratchet and the alignment groove on the toothed disc need to be matched with the ratchet and the right tooth, which takes time in assembly, and because the single toothed disc is assembled on the ratchet, due to the ratchet of the toothed disc The contact area with the ratchet is small, and the angle of the sprocket is easy to occur, so that the stability of the flywheel group during shifting is insufficient, and there is a need for improvement.

In view of this, the inventors are well aware of the lack of use, and have been modified and improved. At the same time, in the spirit of seeking a good spirit, and through its many years of professional experience, and after many ingenuity, the test finally succeeded. The present invention provides a flywheel and hub ratchet configuration.

The main object of the present invention is to provide a flywheel and hub ratchet structure, which is to simplify the flywheel set into a first chainring group, a second chainring group and a plurality of The toothed disc can reduce the assembly man-hour of the flywheel set and increase the stability of the flywheel set. When the single-piece toothed disc is assembled on the ratchet, the contact area between the ratchet groove and the ratchet on the toothed disc is small, so that the toothed disc Insufficient stability, the main reason is to combine the toothed discs of the flywheel group into a tooth set, thereby reducing the number of assembly and increasing the contact area between the ratchet and the ratchet of the toothed disc, so as to avoid the jumping speed of the toothed disc when the bicycle shifts, so that The bicycle shifting is smoother and more accurate. The structure includes: a ratchet drum with a ratchet on the side, a pair of spurs in the ratchet, a hub of the hub of the hub, a thread on the side of the hub, and a flywheel set. The flywheel set comprises: a first toothed disk set, a second toothed disk set, a plurality of toothed disks, and a screw, the center of the toothed plate is provided with a sleeve hole, the peripheral edge of the sleeve hole is provided with a ratchet groove and a pair of positive grooves, outside the toothed disk The single-toothed teeth are provided with a single-chain tooth, and a sleeve hole is arranged in the center of the first tooth-disc group, a concave edge is arranged on the front side of the sleeve hole, a long spine groove and a pair of positive grooves are arranged on the rear side of the concave edge, and double-stranded teeth are arranged at the outer diameter. The center of the second sprocket set is provided with a sleeve hole, the outer diameter is provided with double-chain teeth, and the front side of the double-chain tooth is convex The front side of the flange is provided with a ratchet tooth and a pair of spur teeth. The flange is clamped in the concave edge during assembly, and a screw center is provided with a thread to be screwed with the side of the hub of the hub, thereby forcing the flywheel set. When the flywheel set is driven by the chain, the angle of the toothed disc, the first set of toothed discs and the second set of distorted discs are not generated, so that the flywheel set is stable and smooth.

Please refer to the flywheel and hub ratchet structure shown in the first to fifth figures, the structure includes: a hub (20) with a ratchet (21) on one side and a pair of spurs (22) in the ratchet (21) In the center of the hub (20), there is a hub (23), and the hub (23) has a thread (24) on the side of the hub, and a fly. The wheel set (80), the flywheel set (80) comprises: a first set of toothed discs (30), a second set of toothed discs (40), a plurality of toothed discs (50), and a screw (60), a toothed disc ( 50) The center is provided with a sleeve hole (51), the periphery of the sleeve hole (51) is provided with a ratchet groove (52) and a pair of positive grooves (53), and the outer diameter of the tooth plate (50) is provided with a single-chain tooth (54), The center of the toothed disc set (30) is provided with a sleeve hole (31), the front side of the sleeve hole (31) is provided with a concave edge (32), and the rear side of the concave edge (32) is provided with a long ratchet groove (33) and a pair of positive grooves. (34), the outer diameter is provided with double-chain teeth (35), and the long-spindle groove (33) and the alignment groove (34) are assembled in the ratchet groove (52) and the alignment groove (53) when assembled. The long spine groove (33) can increase the contact surface with the ratchet to increase the stability of the first tooth plate group of the tooth. The center of the second chain gear set (40) is provided with a sleeve hole (41), and the outer diameter is provided with a double chain. The tooth (45), the front side of the double-chain tooth (45) is provided with a flange (42), the front side of the flange (42) is provided with a ratchet (43) and a pair of spur teeth (44), and the flange (42) is assembled The card is disposed in the concave edge (32), and the ratchet (43) and the aligning tooth (44) are opposite to the long ratchet groove (33) and the alignment groove (34) of the first sprocket set (30). A screw (60) is provided with a thread (61) that can be screwed with the hub shaft (23) side thread (24), thereby forcibly flying In the group (80), when the flywheel set (80) is driven by the chain, the angle of the toothed disc (50), the first set of toothed discs (30) and the second set of distorted discs (40) are not generated, so that the flywheel set The shifting speed is stable and smooth.

(20)‧‧‧花鼓

(21)‧‧‧ ratchet

(22) ‧‧‧ Orthodontic

(23)‧‧‧Drum hub

(24)‧‧‧Thread

(30)‧‧‧First toothed disk set

(31) ‧ ‧ set of holes

(32) ‧‧‧ concave edge

(33) ‧‧‧Long spine

(34) ‧‧‧正正槽

(35)‧‧‧Double-chain teeth

(40)‧‧‧Second toothed disc set

(41) ‧ ‧ set of holes

(42) ‧‧‧Flange

(43)‧‧‧ ratchets

(44) ‧‧‧ Orthodontic

(45)‧‧‧Double-chain teeth

(50)‧‧‧ toothed disc

(51) ‧ ‧ set of holes

(52)‧‧‧The spine

(53) ‧‧‧正正槽

(54)‧‧‧Single-chain teeth

(60)‧‧‧ screws

(61)‧‧‧ thread

(80)‧‧‧Flywheel set

The first figure is a perspective exploded view of the present invention.

Second Figure: Another preferred perspective exploded view of the present invention.

Third: A schematic diagram of a three-dimensional combination of the present invention.

Fourth Figure: is a schematic exploded view of the present invention.

Figure 5 is a schematic cross-sectional view of the present invention.

(20)‧‧‧花鼓

(21)‧‧‧ ratchet

(22) ‧‧‧ Orthodontic

(23)‧‧‧Drum hub

(24)‧‧‧Thread

(30)‧‧‧First toothed disk set

(31) ‧ ‧ set of holes

(32) ‧‧‧ concave edge

(33) ‧‧‧Long spine

(34) ‧‧‧正正槽

(35)‧‧‧Double-chain teeth

(40)‧‧‧Second toothed disc set

(41) ‧ ‧ set of holes

(42) ‧‧‧Flange

(43)‧‧‧ ratchets

(44) ‧‧‧ Orthodontic

(45)‧‧‧Double-chain teeth

(50)‧‧‧ toothed disc

(51) ‧ ‧ set of holes

(52)‧‧‧The spine

(53) ‧‧‧正正槽

(54)‧‧‧Single-chain teeth

(60)‧‧‧ screws

(61)‧‧‧ thread

(80)‧‧‧Flywheel set

Claims (1)

The utility model relates to a flywheel and a ratchet ratchet structure, which comprises a ratchet wheel with a ratchet on one side, a pair of orthodontic teeth in the ratchet wheel, a hub of the hub of the hub, a thread on the side of the hub of the hub, and a flywheel set. The flywheel set comprises: a first toothed disk set, a second toothed disk set, a plurality of toothed disks, and a screw, the center of the toothed plate is provided with a sleeve hole, the peripheral edge of the sleeve hole is provided with a ratchet groove and a pair of positive grooves, outside the toothed disk The single-toothed teeth are provided with a single-chain tooth, and a sleeve hole is arranged in the center of the first tooth-disc group, a concave edge is arranged on the front side of the sleeve hole, a long spine groove and a pair of positive grooves are arranged on the rear side of the concave edge, and double-stranded teeth are arranged at the outer diameter. The second sprocket set is provided with ratchet teeth, the center is provided with a sleeve hole, the outer diameter is provided with double-chain teeth, the front side of the double-chain tooth is provided with a flange, the front side of the flange is provided with ratchet teeth and a pair of spur teeth, and the screw center Threaded to be screwed to the side of the hub of the hub, thereby forcing the flywheel set; characterized in that the second set of teeth is provided with double-chain teeth and flanges, ratchets and aligned teeth, When the second set of toothed discs is combined with the first set of toothed discs, the combined contact area is increased, so that the assembly of the present invention is faster and the structure is more stable.