TW201700345A - Vehicle flywheel capable of increasing the gear ratio and enhancing the speed performance of the vehicle - Google Patents

Abstract

A vehicle flywheel comprises a hollow-shaped intermediate sleeve member and a plurality of tooth plates. The plurality of tooth plates is sleeved and fixed to the outside of the intermediate sleeve member. The tooth plates are arranged in sequence according to the outer diameter. Primarily, there is a coupling hole defined in one end of the intermediate sleeve member arranged with the tooth plate with smallest outer diameter. Furthermore, there is a terminal gear wheel provided on an outer side of the coupling hole. A center hole is arranged at the circle center of the terminal gear wheel. One binding end of the terminal gear wheel facing the coupling hole is embedded into the coupling hole. The bonding end is bonded and fixed to the coupling hole by a bonding means. The bonding means can restrict the terminal gear wheel and the intermediate sleeve member to move together, whereby the terminal gear wheel is not sleeved to the outside of the intermediate sleeve member. Therefore, the outer diameter of the terminal gear wheel can be smaller to increase the gear ratio and enhance the speed performance of the vehicle.

Description

Car flywheel

The invention provides a vehicular flywheel, in particular to a vehicular flywheel structure which can make the outer diameter of the end gear of the flywheel smaller, so as to increase the gear ratio of the vehicle to improve the riding speed.

Pressing, the flywheel of the bicycle is connected with the hub of the rear wheel, and the flywheel and the front toothed disc are connected by a chain, and the front toothed disc is rotated by stepping on the pedal, and the flywheel and the rear wheel are rotated by the chain to advance the bicycle. The flywheel is mainly composed of a plurality of large and small toothed discs having different outer diameters and matching different numbers of teeth, and a ratchet wheel, the ratchet wheel can make the large and small toothed discs can only rotate in one direction and cannot be reversed, the large and small toothed discs. The order is arranged from large to small. The rider can control the front and rear transmissions via two shifting handles fixed to the left and right sides of the handlebar, changing the gear ratio between the front toothed disc and the gearwheel of the flywheel, thereby adjusting the stepping light gravity or the vehicle speed. However, each of the toothed discs of the conventional lock type or the cassette flywheel is adjacently fixed by the manner of being sleeved on the sleeve shaft of the ratchet wheel, and the inner diameter of the sleeve hole in the middle of the smallest toothed disc is required to be received by the sleeve shaft. The diameter limit cannot be reduced, so the smallest toothed disc of the flywheel can not be made smaller by the above limitation. Generally, the smallest toothed disc is about 14 teeth. At present, the smallest one has found 11 teeth, but even the smallest toothed disc has only 11 teeth. Can not meet the needs of small wheel bike riders. Recently, although there are 7 teeth, but the non-locking type, the flywheel structure adopts a one-way bearing structure, which is different from the flywheel structure of the present invention using a ratchet structure, and is also incompatible with each other. The present inventors have made improvements in view of the above and have produced the present invention.

Accordingly, it is an object of the present invention to provide a vehicular flywheel structure that allows the outer diameter of the end gear of the flywheel to be smaller to increase the gear ratio of the vehicle to increase the riding speed.

In order to achieve the above object, the main feature of the present invention is that a sprocket end having a smallest outer diameter is disposed in an intermediate insertion sleeve, and a coupling hole is provided. The end gear is disposed outside the coupling hole, and the end gear is disposed at the outer end of the coupling hole. a center hole is disposed, the end gear facing one of the joint ends of the joint hole is embedded in the joint hole, the joint end and the joint hole are combined by a joint means, and the joint means can limit the end gear and the The intermediate wear kit is interlocked together, whereby the end gear is not worn over the outer side of the intermediate wear sleeve, and the outer diameter of the end gear can be smaller to increase the gear ratio and increase the speed of the vehicle.

In order to achieve the above object, the technical means and the achievable effects of the present invention, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Please also refer to the first to fifth figures. The flywheel 1 of the present invention is exemplified by the locking of the tooth surface 210 of the end 21 of the hub 20 of the bicycle rear wheel 2, and the flywheel 1 is combined with the hub 20. The rear axle hole is again passed through an axle 22, and the ends of the axle 22 are fixed to the frame. The flywheel 1 system includes:

An intermediate wearing sleeve 10, as shown in the fourth and fifth figures, is hollow, and the two sides are respectively axially outwardly projecting and are hollow, one of the first sleeve shaft 100 and the second sleeve shaft 101, The axes of the first and second sets of shafts 100, 101 overlap the axis of the intermediate wearable sleeve 10. The outer peripheral surfaces of the first and second sleeves 100 and 101 are respectively a first sleeve segment 102 and a second sleeve segment 104. The first and second sleeve segments 102 and 104 are matched by a concave and convex rule. A ratchet structure in which the cogging of the ratchet structure is axially extended. The end faces of the first and second sleeve shafts 100 and 101 respectively have a first screw hole 103 and a second screw hole 105. An intermediate toothed disc 106 is protruded outwardly from the intermediate wearing sleeve 10, and the intermediate toothed disc 106 can be screwed to the intermediate wearing sleeve 10 or integrally formed with the intermediate wearing sleeve 10.

A first ratchet ring 110, as shown in the fourth and fifth figures, has a first retaining ring 110, and the first retaining ring 110 extends axially toward the end of the intermediate wearing sleeve 10 to have a first threaded section 111. The segment 111 can be screwed to the first screw hole 103. The circumferential surface of the first retaining ring 110 has a plurality of grooves 112 for clamping and driving the first screw segment 111 of the ratchet 11 The first screw hole 103 is screwed or separated. The ratchet 11 has a shaft hole 113. The shaft hole 113 is provided with an internal thread 114 adjacent to the end 21 of the hub 20 to be coupled with the tooth surface 210 of the end 21 of the hub 20 in a locking manner; the other end of the shaft hole 113 The bore wall has a ratchet inner wall 115 axially disposed to engage a disassembly tool 30 (as shown in Figure 8).

The large toothed disc set 12, as shown in the fourth and fifth figures, is composed of a plurality of large toothed discs having an outer diameter larger than the intermediate toothed disc 106, and is concentrically adjacent to each other, and is sleeved on the first through sleeve shaft 100. The large toothed discs 120a, 120b, etc. constituting the large sprocket set 12 are arranged in order according to the outer diameter of the large spurs, and a spacer ring 121 is disposed between the two spurs 120a and 120b. The center hole 122 of the toothed discs 120a, 120b has an aperture that cooperates with the first sleeve shaft 100, and the hole wall of the center hole 122 cooperates with the ratchet structure of the first sleeve section 102 to also extend the axial direction of the slot. Concave and convex ratchet configuration. After the large sprocket wheel set 12 is sleeved on the first threaded sleeve shaft 100, and after the first chain sprocket 123 is inserted, the first threaded section 111 of the ratchet 11 and the first screw hole 103 are screwed. That is, the large sprocket set 12 is fixed to the first sleeve shaft 100 of the intermediate wearing sleeve 10, and is interlocked with the intermediate wearing sleeve 10.

A small sprocket set 13, as shown in the fourth and fifth figures, is composed of a plurality of small spurs having an outer diameter smaller than the intermediate spurs 106, which are adjacent to the concentric circles, and are sleeved on the second sleeve shaft 101. The small spurs 130a, 130b, etc. constituting the small spur group 13 are arranged in order according to the outer diameter of the small spurs, and a spacer ring 131 is disposed between each of the small spurs 130a and 130b. The center hole 132 of the small toothed discs 130a, 130b has an aperture that cooperates with the second sleeve shaft 101, and the inner wall of the central hole 132 cooperates with the ratchet structure of the second sleeve portion 104 to form an axial extension of the slot. Ratchet configuration. When the small sprocket set 13 is placed on the second sleeve shaft 101, the sprocket outer diameter of the large sprocket set 12 is arranged in a directional direction, that is, sequentially arranged according to the outer diameter.

An end gear 14 is disposed on the outer side of the small sprocket set 13 as shown in the fourth and fifth figures. A second threaded section 140 extends axially toward the end of the second sleeve shaft 101, and A second second ring 143 is protruded from a circumferential surface of the second threaded portion 140. The second threaded portion 140 is screwed to the second screw hole 105 of the second sleeve shaft 101. The end gear 14 is fixed to the axial end of the second sleeve shaft 101, and the end portion of the small sprocket set 13 is urged and fixed on the second sleeve shaft 101 by the second retaining ring 143 (eg Figure 6). A spacer ring 141 is also disposed between the end gear 14 and the last toothed disc 130b of the small chain gear set 13 as a receiving space for the chain. The center of the end gear 14 is provided with a central hole 142 for the axle 22 to pass through. The teeth of the end gear 14 are equally radiated from the circumferential surface of the second thread segment 140, because the end gear 14 is not sleeved on the second sleeve shaft 101, and is not affected by the second sleeve shaft 101. The outer diameter is limited so that the outer diameter of the end gear 14 can be smaller, and the number of teeth of the array can be reduced to increase the gear ratio of the vehicle.

After the assembly of the flywheel 1 is completed, the screw hole 114 of the ratchet 11 and the tooth surface 210 of the end 21 of the hub 20 are locked in a locking manner, as shown in the first to third figures and the sixth figure. After the axle 22 passes through the center of the combination of the flywheel 1 and the hub 20, the axle 22 at the end of the end gear 14 is sleeved with a hollow sleeve 220 that extends into the inner end of the flywheel 1 and the hub. The end of the 20 is abutted, and the other end protrudes from the end gear 14 by a predetermined length (for example, 1-3 mm), and then a nut 221 is screwed to the tooth surface of the axle 22 and the end of the sleeve 220 is tightened. The predetermined length can be used as the accommodating space of the chain, and an appropriate space is left between the outer wall of the sleeve 220 and the inner wall of the central hole 142 of the end gear 14 to prevent the flywheel 1 from being subjected to force during riding and causing eccentricity. The inner wall of the central hole 142 of the end gear 14 is in contact with the outer wall of the sleeve 220, and the presence of the appropriate space is also available for the hollow shape when the flywheel 1 is disengaged from the hub 20. The removal tool 30 enters and exits.

The aperture of the shaft hole 113 of the ratchet 11 at the position of the inner wall 115 of the ratchet is equal to or smaller than the aperture of the central hole 142 of the end gear 14, and the combination of the flywheel 1 and the tooth surface 210 of the end 21 of the hub 20 is removed. As shown in the seventh and eighth figures, the nut 221 is first retracted, and the sleeve 220 is taken out, and a hollow disassembly tool 30 having an outer surface having a ratchet surface 31 is inserted into the center hole 142 of the end gear 14. And extending into the bottom, the end of the detaching tool 30 will hit the end of the end 21 of the hub 20, and the ratchet surface 31 of the detaching tool 30 just engages with the ratchet inner wall 115 of the ratchet 11 The tool 30 can drive the ratchet 11 to interlock with the body, so that the inner thread 114 of the ratchet 11 is disengaged from the tooth surface 210 of the end 21 of the hub 20, so that the flywheel 1 can be disassembled and separated from the hub 20.

Then, the end gear 14 and the intermediate insertion sleeve 10 are disposed in a manner of combining the ends of the small toothed disc set 13 , and the second screw section 140 and the second screw hole 105 are combined by a locking type. A coupling hole is disposed at the end of the small toothed disc set 13 (ie, the second screw hole 105 is replaced by the coupling hole), and the joint end of the end gear 14 can also be replaced with a matching structure, which can be embedded In the joint hole, the joint end and the joint hole are combined and fixed by a snap-type joint means, and the end gear 14 can be interlocked with and without the joint of the intermediate wear sleeve 10, and the same combination can be achieved. effect.

According to the present invention, the end gear 14 of the present invention is not worn over the second sleeve shaft 101 of the intermediate insertion sleeve, so that the center hole 142 of the end gear 14 is not restricted by the outer diameter of the second sleeve shaft 101. Therefore, the outer diameter of the end gear 14 can be made small, and the number of teeth can be reduced. As shown in the drawings, the number of teeth of the end gear 14 of the present invention may be 8 teeth, which is 11 teeth or 14 teeth less than the conventional last tooth plate, and the gear ratio of the car can be increased.

In conclusion, the present invention can achieve the intended function and purpose, and the detailed description can be implemented by those skilled in the art, and the above embodiments are only used to illustrate the present invention, and all equivalent structures. Changes may still be made without departing from the scope of the invention.

2‧‧‧ Rear wheel
20‧‧·wheels
21‧‧‧One end of the hub
210‧‧‧ tooth surface
22‧‧‧Axle
220‧‧‧ sleeve
221‧‧‧ nuts
1‧‧‧ flywheel
10‧‧‧Intermediary wear kit
100‧‧‧First wearing a shaft
101‧‧‧Second shaft
102‧‧‧First wearing sleeve
104‧‧‧second wearing sleeve
103‧‧‧First screw hole
105‧‧‧Second screw hole
106‧‧‧Intermediate toothed disc
11‧‧‧ ratchet
110‧‧‧First retaining ring
111‧‧‧First screw segment
112‧‧‧ Groove
113‧‧‧Axis hole
114‧‧‧ internal thread
115‧‧‧ ratchet inner wall
12‧‧‧large gear set
120a, 120b‧‧‧ large chainring
121‧‧‧ spacer ring
122‧‧‧ center hole
123‧‧‧Block links
13‧‧‧Small toothed disc set
130a, 130b‧‧‧ small chainrings
131‧‧‧ spacer ring
132‧‧‧ center hole
14‧‧‧End gear
140‧‧‧Second screw segment
141‧‧‧ spacer ring
142‧‧‧ center hole
143‧‧‧second retaining ring
30‧‧‧Removal tools

The first figure shows a perspective view of the hub of the embodiment of the present invention connected to the hub of the rear wheel. The second figure shows a partial cross-sectional front view of the flywheel of the embodiment of the present invention after being connected to the hub of the rear wheel. The third figure shows a perspective view of the flywheel connected to the hub according to the embodiment of the present invention. The fourth figure shows an exploded perspective view of the flywheel of the embodiment of the present invention. The fifth figure shows an exploded perspective view of the flywheel at another angle of the embodiment of the present invention. Figure 6 is a cross-sectional view showing the combination of the flywheel and the hub of the embodiment of the present invention. The seventh figure shows a perspective view of the flywheel and the hub to be detached according to the embodiment of the present invention. Figure 8 is a cross-sectional view showing the flywheel and the hub of the embodiment of the present invention to be detached.

1‧‧‧ flywheel

20‧‧·wheels

21‧‧‧One end of the hub

22‧‧‧Axle

210‧‧‧ tooth surface

220‧‧‧ sleeve

221‧‧‧ nuts

10‧‧‧Intermediary wear kit

100‧‧‧First wearing a shaft

101‧‧‧Second shaft

102‧‧‧First wearing sleeve

103‧‧‧First screw hole

104‧‧‧second wearing sleeve

105‧‧‧Second screw hole

106‧‧‧Intermediate toothed disc

11‧‧‧ ratchet

110‧‧‧First retaining ring

111‧‧‧First screw segment

112‧‧‧ Groove

113‧‧‧Axis hole

114‧‧‧ internal thread

115‧‧‧ ratchet inner wall

12‧‧‧large gear set

120a, 120b‧‧‧ large chainring

121‧‧‧ spacer ring

122‧‧‧ center hole

123‧‧‧Block links

13‧‧‧Small toothed disc set

130a, 130b‧‧‧ small chainrings

131‧‧‧ spacer ring

132‧‧‧ center hole

14‧‧‧End gear

140‧‧‧Second screw segment

141‧‧‧ spacer ring

142‧‧‧ center hole

143‧‧‧second retaining ring

Claims (9)

The utility model relates to a flywheel for a vehicle, which comprises a hollow intermediate wearing sleeve and a plurality of toothed discs, wherein the plurality of toothed discs are sleeved and fixed outside the intermediate wearing sleeve, and the toothed discs are arranged in order according to the outer diameter; The utility model is characterized in that: the intermediate wear sleeve is configured to have a coupling hole provided with the smallest outer diameter end; and another end gear is disposed outside the coupling hole, and a center hole is arranged at a center of the end gear The end gear faces the joint end of the joint hole and is embedded in the joint hole. The joint end and the joint hole are combined and fixed by a joint means, and the joint means can limit the end gear together with the intermediate wear kit. The interlocking, whereby the outer diameter of the end gear is not limited by the outer diameter of the intermediate wear kit. The vehicle flywheel according to claim 1, wherein the coupling hole is a screw hole, and the joint end of the end gear is a screw segment, and the end gear is coupled by a screw type The intermediary wears a combination of kits. The vehicle flywheel according to claim 1, wherein the joint end and the joint hole are combined by a snap-fit combination. The vehicle flywheel according to claim 1 or 2 or 3, further comprising a ratchet wheel, a large toothed disk set, and a small toothed disk set, wherein the intermediate wearing set is axially protruded at each side of the center of the circle Extending a first sleeve and a second sleeve; the outer peripheral surfaces of the first and second sleeve shafts are respectively a first sleeve portion and a second sleeve portion, the first and second sleeves The segment is a concave-convex ratchet structure, and the tooth groove of the ratchet structure is axially extended; the end faces of the first and second threaded sleeves respectively have a first screw hole and the foregoing coupling hole; And an outer ring of the intermediate wearing sleeve between the second sleeve shaft and an outer peripheral disc; the ratchet has a shaft hole, and the shaft hole is provided with an internal thread adjacent to a hub end, and is disposed at one end of the hub One of the tooth faces is coupled in a locking manner; the other end of the shaft hole has a ratchet inner wall, and the tooth groove of the inner wall of the ratchet is axially disposed; the ratchet extends outwardly toward the intermediate end of the intermediate sleeve The first screw segment is screwed to the first screw hole; The large toothed disc set is sleeved outside the first sleeve shaft, and is composed of a plurality of large toothed discs larger than the outer diameter of the intermediate toothed disc by concentric circles; the large toothed discs are sequentially arranged according to the outer diameter. Arranging, each of the large toothed discs is provided with a spacer ring partition; the central bore aperture of the large toothed discs is matched with the outer diameter of the first sleeved shaft, and the inner wall of the central bore of the large chainring is matched The ratchet structure of the first wearing sleeve is also configured as a ratchet arrangement in which the tooth groove is axially extended; the small toothed disk set is sleeved outside the second threaded sleeve, and is smaller than the outer diameter of the intermediate toothed disc. The small spurs are formed by concentric circles; the small spurs are arranged in sequence according to the outer diameter, and each of the small spurs is provided with a spacer ring, and the small sprocket set is combined with the aforementioned large sprocket set. The outer diameter of the toothed disc is arranged in a forward direction; the central aperture of the small toothed disc is matched with the outer diameter of the second through sleeve shaft, and the inner wall of the central hole of the small toothed disc is matched with the second wearing sleeve The ratchet structure also serves as a ratchet arrangement with axially extending slots. The vehicular flywheel according to the fourth aspect of the invention, wherein the end gear protrudes outwardly from a circumferential surface of the threaded portion, and a retaining ring is protruded through the retaining ring. Fixed side push fixed. The vehicular flywheel according to claim 4, wherein a spacer ring is disposed between the end gear and the last spur of the small sprocket set. The vehicle flywheel according to claim 4, wherein the shaft hole of the ratchet corresponds to an aperture of the inner wall of the ratchet, which is equal to or smaller than a central hole diameter of the end gear. The vehicle flywheel according to claim 4, wherein the shaft hole of the flywheel and the hub is passed through a axle, and the outer sleeve of the end gear end is sleeved with a hollow sleeve. The sleeve extends into the inner end of the flywheel and abuts the end of the hub, and the other end extends out of the end gear, and the other end is tightened by a nut that is locked to the tooth surface of the axle. The vehicular flywheel according to claim 4, wherein the ratchet and the largest sprocket of the large sprocket set are threaded with a stop chain.