TWI727846B - Bicycle axle and bicycle axle assembly - Google Patents

Abstract

A bicycle axle is provided, including: a shaft, defining an axial direction, the shaft including an axle portion, an head portion radially protruding from one end of the axle portion and an engagement portion radially protruding from the axle portion and distanced from the head portion; and a sleeve member, disengageably sleeved on the axle portion, the sleeve member including at least one engaged portion radially extending from an inner side thereof, the engaged portion abutted the engagement portion in the axial direction. A bicycle axle assembly is further provided, including a plurality of said sleeve members, the plurality of sleeve members being different in size, the sleeve member is made of non-metallic material.

Description

Bicycle spindle and bicycle spindle group

The invention relates to a bicycle spindle and a bicycle spindle group.

Generally, the hub axle of a bicycle passes through a hub and is locked on the bicycle frame (such as a front fork or a rear fork). The hub axle can be rotated by a tool to lock and clamp the hub on the front fork or rear. Between the two forks.

However, the specifications of through mandrels generally available on the market are varied, and their dimensions (such as length) are also different. Therefore, it is usually necessary to select the applicable through mandrel according to the design of the frame group. If there are differences in specifications, for example, the length of the through mandrel is too long. During assembly, the shaft head of the through mandrel and the outer side of the front fork or rear fork A large section will be exposed, so that the through spindle cannot press the front fork or the second fork of the rear fork to clamp the hub. Therefore, it is necessary to purchase through mandrels that meet the specifications according to different frame groups, which has the problem of higher cost.

Therefore, it is necessary to provide a novel and progressive bicycle spindle and bicycle spindle assembly to solve the above-mentioned problems.

The main purpose of the present invention is to provide a bicycle spindle and a bicycle spindle assembly, which can be tightly fitted to a bicycle frame.

In order to achieve the above object, the present invention provides a bicycle spindle, including: a spindle, which defines an axial direction, the spindle includes a shaft portion, a shaft head portion radially protruding from one end of the shaft portion, and a radial projection A clamping portion arranged on the shaft portion and spaced apart from the shaft head portion; and a sleeve detachably sleeved on the shaft portion, the sleeve including at least one clamping portion extending radially on the inner side, the clamping portion Abutting against the engaging portion in the axial direction, the sleeve is made of non-metallic material; wherein, the sleeve defines at least one centerline and two boundary lines, and the at least one centerline extends radially through the at least one snapping portion A center, the sleeve includes two ends disposed on two opposite sides in the axial direction, the two ends overlap with the shaft head in the axial direction, and the two boundary lines extend at least along the two ends respectively. Parallel to the at least one center line, the distance between the two boundary lines and the at least one center line is the same.

In order to achieve the above objective, the present invention further provides a bicycle spindle set, which includes a plurality of sets of bicycle spindles as described above, each of the sets is detachably sleeved on the shaft portion, and the sizes of the plurality of sets of sets are different.

1: Bicycle spindle

2: Fork

3: wheel drum

10: Mandrel

11: Shaft

111: Large diameter section

112: Trail section

12: Shaft head

13: Card Arrival

15: flange

16: groove

17: limit piece

18: thread section

19: Recessed hole

20, 20a, 20b, 20c, 20d: kit

21: Anti-slip structure

22: inner peripheral surface

23: gap

24: Guide slope

25: Card connector

26: Ring flange

27, 28: end

30: Scale structure

A: Axial

D1, D2: spacing

L1: Centerline

L2, L3: boundary line

Figure 1 is a perspective view of a first preferred embodiment of the present invention.

Figure 2 is an exploded view of a first preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of a first preferred embodiment of the present invention.

Fig. 4 is an enlarged view of Fig. 3.

Fig. 5 is an exploded perspective view of a bicycle spindle assembly according to a first preferred embodiment of the present invention.

Fig. 6 is another perspective view of a first preferred embodiment of the present invention.

Figure 7 is a cross-sectional view of a kit of a first preferred embodiment of the present invention.

FIG. 8 is a perspective view of a plurality of installation kits according to a first preferred embodiment of the present invention.

Fig. 9 is still another perspective view of a first preferred embodiment of the present invention.

Fig. 10 is a diagram of the use state of a first preferred embodiment of the present invention.

Figure 11 is a cross-sectional view of a second preferred embodiment of the present invention.

Figure 12 is a perspective view of a second preferred embodiment of the present invention.

The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention, and are described first.

Please refer to FIGS. 1 to 10, which show a first preferred embodiment of the present invention. The bicycle spindle 1 of the present invention includes a spindle 10 and a sleeve 20.

The mandrel 10 is defined with an axial direction A. The mandrel 10 includes a shaft portion 11, a shaft head portion 12 projecting radially at one end of the shaft portion 11, and a shaft head portion 12 radially projecting on the shaft portion 11 and connected to the shaft head portion. 12 spaced apart clamping portions 13; and the sleeve 20 is detachably sleeved on the shaft portion 11, the sleeve 20 includes at least one clamping portion 25 radially extending inside, and the clamping portion 25 is in the axial direction A abuts against the card abutment part 13. The sleeve 20 can at least partially overlap, interfere with, and contact the shaft head 12 in the axial direction A. The engaging portion 25 of the sleeve 20 and the engaging portion 13 can at least partially overlap, interfere with, contact, or contact and engage with the engaging portion 13 in the axial direction A in the circumferential direction. As a result, the kit 20 of different sizes can be disassembled and replaced on the spindle 10 and is not easily detached according to requirements, and the kit 20 will be sleeved on the exposed part of the spindle 10 to fill the fork frame 2 of the bicycle (such as the previous Fork or rear fork) and the distance between the axle head 12, the bicycle spindle 1 can be fastened to the bicycle fork frame 2 (such as front fork or rear fork) and pass through Set a wheel hub 3. In other words, the kit 20 of an appropriate size can be selected according to the size of the spindle 10 and the fork frame 2 to be installed. The kit 20 can be quickly installed, positioned, and disassembled on the mandrel 10.

The kit 20 is made of non-metallic material; in this embodiment, the kit 20 is made of plastic material, which is made of plastic material in one piece. The kit 20 contains carbon fiber material, so that the kit 20 can bear the force Deformation, high structural strength, and lightweight characteristics, which are beneficial to manufacturing and processing. Specifically, the sleeve 20 will be deformed by force when squeezing the engaging portion 13, so that it can be easily disassembled and installed on the mandrel 10 at the same time stably combined . A non-slip structure 21 is provided on the outer periphery of the kit 20. The non-slip structure 21 is a plurality of grooves, and can also be a non-slip layer provided in the kit, or a non-slip material combined with the kit and exposed on the outer periphery; in this embodiment When disassembling and assembling the kit 20, the non-slip structure 21 can be contacted to achieve non-slip so that it can be smoothly disassembled and installed on the spindle 10.

The mandrel 10 further includes a flange 15 extending radially on the outer circumference of the shaft portion 11, at least one groove 16 recessed in the flange 15, and at least one limiter received in the at least one groove 16 The at least one limiting member 17 is provided with the engaging portion 13, the shaft portion 11 includes a large-diameter section 111 and a small-diameter section 112 in the axial direction A. The outer diameter of the small-diameter section 112 is Smaller than the large-diameter section 111, the large-diameter section 111 is provided with the flange 15; the sleeve 20 abuts against the flange 15 radially, and the sleeve 20 and the small-diameter section 112 are spaced apart to form a gap 23 , Each of the limiting members is a deformable O-ring or a C-ring that can be reduced and expanded to facilitate assembly. The at least one limiting member 17 can also be set to other structures according to material characteristics and configuration requirements; The engaging portion can also be integrally formed on the flange of the shaft portion. The sleeve 20 is provided with an inner peripheral surface 22 facing the shaft portion 11, each of the clamping portions 25 is provided on the inner peripheral surface 22, at least one of the clamping portions 25 is a clamping recess (ring groove), and the other In the embodiment, each of the clamping portions may also be a convex protrusion, and the clamping portion 13 is embedded in a concave recess, which can prevent the sleeve 20 from slipping off the spindle 10, and the inner peripheral surface 22 of the sleeve 20 is at least The gap 23 is formed between the part and the shaft 11, and the inner peripheral surface 22 of the sleeve 20 can also be in radial contact with the flange 15; it can provide stable support and reduce the internal The contact area between the peripheral surface 22 and the shaft portion 11 allows the sleeve 20 to rotate smoothly relative to the mandrel 10. When assembling, the O-ring is abutted by the sleeve 20 so that the inner diameter of the O-ring can be reduced in the elastic range, and corresponding to the recess, so as to be elastically reset and interlocked with the recess.

The sleeve 20 defines at least one centerline L1 and two boundary lines L2, L3. The at least one centerline L1 radially extends through a center of the at least one clamping portion 25. The sleeve 20 includes two Opposite the two ends 27, 28, the two ends 27, 28 overlap the shaft head 12 in the axial direction A, and the two boundary lines L2, L3 extend at least along the two ends 27, 28, respectively And parallel to the at least one center line L1, the distances D1, D2 between the two boundary lines L2, L3 and the at least one center line L1 are the same.

The inner side of the sleeve 20 is provided with two inclined guide surfaces 24 respectively inclined toward the two outer sides. The two inclined guide surfaces 24 are spaced apart in the axial direction A, and each of the clamping portions 25 is located on the two inclined guide surfaces in the axial direction A. 24, the sleeve 20 includes two clamping portions 25, the two clamping portions 25 are spaced apart in the axial direction A, the sleeve defines two center lines L1, and each of the center lines L1 radially extends through one of the two clamping portions 25. The center of the clamping portion 25, the distances D1, D2 between each of the boundary lines L2, L3 and one of the center lines L1 are the same, each of the inclined guide surfaces 24 is adjacent to one of the clamping portions 25, and the two clamping The connecting portions 25 are provided on two opposite sides of the sleeve 20 in the axial direction A, and any one of the engaging portions 25 and the engaging portion 13 can be selected to abut against each other to provide a foolproof effect, which differs from the sleeve 20 Both directions (for example, the two opposite directions on the axial direction A) can be easily assembled on the mandrel 10 to achieve rapid assembly, stable positioning, and foolproof effects.

The outer surface of the shaft portion 11 is provided with a scale structure 30. The scale structure 30 can form a printed layer on the shaft portion 11 by printing, or can be a concave/convex structure formed on the shaft portion 11. Preferably, the scale structure 30 extends toward the axial direction A, so that the distance between the shaft head 12 of the spindle 10 and the front fork or the rear fork and the axial direction A can be directly determined from the scale structure 30 first. The sleeve 20 of an appropriate size can be selected and installed on the mandrel 10.

The shaft portion 11 is different from the shaft head portion 12 at one end with a threaded section 18 for screw connection with a nut. The two end surfaces of the mandrel 10 are each provided with a recessed hole 19, such as but not limited to a hexagonal hole, for inserting a rotating tool to rotate the mandrel 10.

The present invention also provides a bicycle spindle set, the bicycle spindle set includes a plurality of the kits 20, 20a, 20b, 20c as described above, each of the kits 20, 20a, 20b, 20c is detachably sleeved on the shaft portion 11 , The sizes of the plural sets of kits 20, 20a, 20b, 20c are different, and one of the kits 20, 20a of an appropriate size can be replaced according to the size of the gap between the shaft head 12 of the mandrel 10 and the side of the fork. , 20b, 20c. The kits 20, 20a, 20b, 20c of the same or different sizes can also be sleeved on the spindle 10 at the same time, so that the bicycle spindle 1 can be fastened to the fork frame.

Please refer to FIGS. 11 to 12, which show a second preferred embodiment of the present invention. The sleeve 20d is further provided with a ring flange 26 protruding toward the axial direction A. The ring flange 26 surrounds the shaft head portion 12 and It overlaps with the shaft head portion 12 in the radial direction, so as to protect the shaft head portion 12 from external abrasion, and the sleeve 20d can be stably combined with the mandrel 10 and is not easily separated.

In summary, the present invention provides a bicycle spindle and a bicycle spindle assembly, which provides the kit that can be disassembled and assembled on the spindle to fill the gap between the fork frame (such as the front fork or the rear fork) of the bicycle and the head of the axle .

1: Bicycle spindle

10: Mandrel

11: Shaft

12: Shaft head

18: thread section

20: Kit

30: Scale structure

Claims (10)

A bicycle spindle, comprising: a spindle defining an axial direction, including a shaft portion, a shaft head portion projecting radially at one end of the shaft portion, and a radially projecting shaft portion and spaced apart from the shaft head portion A clamping portion; and a sleeve detachably sleeved on the shaft portion, including at least one clamping portion radially extending inside, the clamping portion abuts against the clamping portion in the axial direction, the sleeve is Made of non-metallic material; wherein the sleeve defines at least one centerline and two boundary lines, the at least one centerline extends radially through a center of the at least one clamping portion, and the sleeve includes two oppositely arranged in the axial direction Two side ends, the two ends overlap with the shaft head in the axial direction, the two boundary lines extend at least along the two ends and are parallel to the at least one center line, the two boundary lines and the at least The spacing between a centerline is the same. The bicycle spindle according to claim 1, wherein the outer surface of the shaft portion is provided with a scale structure, and the scale structure extends toward the axial direction. The bicycle spindle according to claim 1, wherein the kit includes carbon fiber material. The bicycle spindle according to claim 1, wherein the spindle further includes a flange extending radially from the outer periphery of the shaft portion, at least one groove recessed in the flange, and at least one accommodating at least A grooved limiting member, the at least one limiting member is provided with the engaging portion; wherein the shaft includes a large diameter section and a small diameter section in the axial direction, and the outer diameter of the small diameter section is smaller than The large-diameter section is provided with the flange; the sleeve radially abuts against the flange, and the sleeve and the small-diameter section are spaced apart to form a gap. The bicycle spindle according to claim 4, wherein the kit is provided with an inner circumferential surface facing the shaft portion, each of the clamping portions is provided on the inner circumferential surface, at least one of the clamping portions is a clamping recess, the The clamping portion is embedded in a clamping recess, and the gap is formed between at least part of the inner peripheral surface of the sleeve and the shaft portion. The bicycle spindle according to claim 1, wherein the inner side of the kit is provided with two inclined guide surfaces respectively inclined toward the opposite two outer sides, the two inclined guide surfaces are arranged at intervals in the axial direction, and each of the clamping portions is located in the axial direction Between the two guide slopes. The bicycle spindle according to claim 1, wherein the kit includes two clamping portions, the two clamping portions are spaced apart in the axial direction, the kit defines two centerlines, and each centerline extends radially through it The center of the clamping portion has the same distance between each boundary line and one of the center lines. The bicycle spindle according to claim 1, wherein the kit is further provided with a ring flange projecting toward the axial direction, and the ring flange surrounds the shaft head portion and overlaps with the shaft head portion in the radial direction. The bicycle spindle according to claim 5, wherein the outer surface of the shaft portion is provided with a scale structure extending toward the axial direction; the kit is made of plastic material; the kit contains carbon fiber material; The inner side is provided with two guide inclined surfaces respectively inclined toward the two opposite outer sides, the two guide inclined surfaces are arranged at intervals in the axial direction, and each of the clamping portions is located between the two guiding inclined surfaces in the axial direction; the kit includes two clamping portions , The two clamping parts are arranged at intervals in the axial direction; the sleeve is additionally provided with a ring flange protruding toward the axial direction, the ring flange surrounds the shaft head part and overlaps the shaft head part in the radial direction; the two cards The connecting portion is provided on two opposite sides of the sleeve in the axial direction; the shaft portion is different from the shaft head with a threaded section at one end; the two end faces of the mandrel are provided with a concave connecting hole; the outer periphery of the sleeve is provided with a threaded section Anti-slip structure; the inner peripheral surface part of the kit is in contact with the flange. A bicycle spindle set includes a plurality of sets of the bicycle spindles of any one of claims 1 to 9, each of the sets is detachably sleeved on the shaft, and the sizes of the plurality of sets are different.

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