TWM491587U - Wheel hub - Google Patents

Description

Wheel hub

The present invention relates to a bicycle component, and more particularly to a wheel hub structure designer for a bicycle.

A previously disclosed DE 20 2009 008 246 U1, DE 20 2009 008 243 U1 and EP 1 186 446 A2 patents disclose a hub in which the hub of each hub is rotatably mounted on a pivot, two axial directions Separate, radially projecting spoke rings are mounted on the hub body, a plurality of mounting holes for supporting the spokes on the common pitch circle are formed therein; a brake disc flange abutting one of the spoke rings, which has a plurality of uses a fixed hole on the fixed brake disc, the common ring, the spoke ring, the flange of the brake disc and a wall portion of the hub body adjacent to the spoke ring on the side of the brake disc are collectively collected in a plurality of materials Connection area. In a known solution, the diameter of the perforated disc of the brake disc flange is located outside of the plurality of material accumulating regions such that the hub body is radially inwardly reduced from the disc flange in the region and then toward the joint region. Enlarging in the radial direction, the force flow transmitted from the brake disc to the hub during the braking operation is initially redirected radially inwardly and then radially outwardly toward the spoke ring of the hub; the force flow The redirection is disadvantageous because high pressure spikes are generated in the redirecting area, resulting in breakage or deformation of the hub. In order to prevent such damage, the hub body must be made relatively thick accordingly, however this is contrary to the design concept that the wheel hub should have high rigidity and small weight.

Further, on the hub of the rear wheel, a more wheel hub may have a toothed disk sleeve which can be brought into meshing engagement with the hub body in a rotational direction or idling in the other rotational direction (such as DES198). 47 673 A1 and DE 10 2007 030 190 A1), one side of the hub body is provided with inner and outer ratchet seats which are engageable with each other, and a preloading force is applied to a meshing position thereof by a compression spring. According to the solution of DE 198 47 673 A1, the two inner and outer ratchet seats are mounted in a floating manner and allow the flywheel body to be tilted to provide a continuous and flat engagement operation. However, the lack of structural design is that a floating installation is possible to axially offset or tilt the hub and the sprocket sleeve, thus requiring high manufacturing costs.

The main purpose of the present invention is to provide a hub in which a geometrical center of gravity is located in a porous disk of a brake disk receiving portion by a spoke ring in a connecting region formed between the connecting portion and the brake disk receiving portion. In addition to the diameter, the spoke ring and the joint portion and the brake disc accommodating portion are designed to ensure the optimum force from the brake disc accommodating portion to the spoke ring, thereby improving the structure of the aforementioned conventional hub. Missing.

In order to achieve the above object, the present invention provides a hub comprising: a hub body that is pivotable and rotatable, two spoke rings that protrude in a radial direction, and a brake disc accommodating portion adjacent to a spoke ring. Having a plurality of fixing holes on the common porous disk, wherein the one spoke ring and the hub body and the brake disk accommodating portion are coupled to each other to form a joint region, and the geometric center of gravity of the joint region is located in the brake disk receiving portion In addition to the diameter of the fixing hole in the porous disk, the present invention further provides a hub, further comprising a toothed disk sleeve, which can be brought into engagement with the hub body in a rotational direction or in another The direction of rotation is idling, wherein one side of the hub body is sleeved with inner and outer ratchet seats that are engageable with each other by a compression spring. Applying a pre-tightening force, wherein the inner ratchet seat is coupled with the hub system in an axial direction, and the outer ratchet seat is coupled with the sprocket sleeve in an axial direction, and is simultaneously in the sprocket seat It is a floating axial displacement.

With regard to the techniques, means and functions of the present invention, a preferred embodiment is described in detail with reference to the drawings, and it is believed that the above objects, structures and features of the present invention can be obtained from an in-depth and specific understanding. .

1‧‧·wheels

2‧‧‧hud body

4‧‧‧ pivot

6, 8‧‧‧ bushings

10, 12‧‧‧ spoke rings

14‧‧‧Installation holes

16‧‧‧Brake disk housing

18‧‧‧Fixed holes

20‧‧‧ toothed socket

22‧‧‧Support section

24‧‧‧ bearing device

26‧‧‧Bumping

28, 30‧‧‧ ring shoulder

32, 34‧‧‧ ball bearings

36‧‧‧ Radial convex

38‧‧‧ inside convex

40‧‧‧ Nuts

42‧‧‧Class flange

44‧‧‧Inner ratchet seat

46‧‧‧ outer ratchet seat

48‧‧‧Compression spring

50‧‧‧ arc concave edge

52, 54‧‧‧ arc concave angle

56‧‧‧Arc concave angle

58‧‧‧Arcting angle

60‧‧‧ inner wall

62‧‧‧Linked area

64‧‧‧Inscribed circle

66‧‧‧ center point

68‧‧‧ ratchet

70‧‧‧ external teeth

72‧‧‧ internal teeth

74‧‧‧Class Circle

76‧‧‧ oblique flank

78‧‧‧Steep flank

80‧‧‧ hole sets

82‧‧‧ inner end annulus

84‧‧‧ card ring

86‧‧‧ ratchet

88‧‧‧Back

90‧‧‧ external teeth

91‧‧‧ mouth

92‧‧‧ internal teeth

94‧‧‧ oblique flank

96‧‧‧Steep flank

98, 100‧‧‧ bearing shoulder

102, 104‧‧‧ ring end face

T‧‧‧ diameter

D‧‧‧OD

Figure 1 is a perspective view of the present invention implemented on the rear wheel hub of a bicycle.

Figure 2 is a schematic cross-sectional view of the creation.

Figure 3 is a partial enlarged view of the vicinity of the spoke ring of the present invention.

Figure 4 is a plan view showing the inner ratchet seat of the present invention and a cross-sectional view taken along line B-B in the drawing.

Figure 5 is a cross-sectional view of Figure 4A-A.

Figure 6 shows a schematic plan view of the outer ratchet seat of the present invention.

Figure 7 is a cross-sectional view of Figure 6A-A.

Figure 8 is a schematic cross-sectional view of the bicycle front wheel hub.

In order to further understand the purpose, characteristics, and effects achieved by the present invention, the preferred embodiment of the present invention will be described below in detail with reference to the drawings:

Figure 1 is a perspective view of the bicycle rear wheel hub.

The hub 1 shown in the drawing has a hub 2 rotatably mounted on a pivot 4 which is a hollow shaft, the end faces being defined by respective bushings 6, 8. The pivot 4 can be via A quick release member is fixedly mounted on a rear fork hook of a bicycle frame; the hub body 2 has a pair of radially protruding spoke rings 10, 12, wherein the mounting holes 14 are formed on a common pitch circle, wherein the end portion Tilt at an angle to the spokes. The spoke ring 10 on the left side of Fig. 1 is connected to the brake disc accommodating portion 16, and the disc of the disc brake system can be fixed thereto, and the fixing can be achieved by the fixing hole 18 on the common porous disc, wherein The fixed screw is screwed to the brake disc (not shown), and adjacent to the spoke ring 12 on the right side of FIG. 1 is a sprocket sleeve 20 mounted on the pivot 4, the toothed disc being sleeved on the tooth The disc housing 20 is formed with a latching tooth formed on the outer circumference of the disc housing 20 in order to enable it to be rotationally fixed.

A hub body 2 having a joint is formed between the two spoke rings 10, 12 such that the outer contour is concave. Continued, please refer to the schematic cross-sectional view of the creation shown in Figure 2, it can be seen that the pivot 4 of the creative hub 1 is a hollow shape, and the pivot 4 forms a smaller diameter in the portion of the toothed sleeve 20 The support section 22 is mounted to the support section 22 by a bearing assembly 24 having two ball bearings and a spacer sleeve located therein. The ball bearing on the left side of the bearing device 24 is located on the lug 26 of the support section 22 of the pivot 4; the ball bearing on the right side is tightly fixed to the spacer sleeve by a sleeve 8 attached to the support section 22. Thereby the entire bearing device 24 has an axial fastening force. Further, the inner peripheral surface of the sprocket sleeve 20 is provided with two axially spaced annular shoulders 28, 30 which are oppositely opposed to the outer rings of the two ball bearings, thereby limiting the axial and radial directions of the bearing device 24. Bit is fixed.

Further, the two ball bearings 32, 34 are sleeved on the pivot shaft 4 at both ends of the hub body 2, wherein the inner end of the ball bearing 32 on the left side of the figure has its inner ring abuts against the radial protrusion 36 of a pivot shaft 4. The outer ring abuts against the inner protrusion 38 of the brake disc accommodating portion 16 , and the outer end end is fastened by a nut 40 of a sleeve 6 with a ring end surface of the sleeve 6 to press the ball bearing 32; The inner end of the other ball bearing 34 on the right side is blocked by the outer ring to the class flange 42 in the hub body 2, and then the end surface of the inner ratchet seat 44 which is sleeved on the side of the hub body 2 is fixed. The seat 44 is coupled to the inner teeth of the hub body 2 via its external teeth, and the outer end surface of the inner ratchet seat 44 has a ratchet tooth corresponding to the inner end surface of the outer ratchet seat 46. (See Figures 4 and 5) Engagement, the outer ratchet seat 46 is biased by a compression spring 48 in the direction of its engagement position, the compression spring 48 being biased against the inner shoulder of the sprocket sleeve 20 . The principle and manner of the ratcheting engagement of the inner and outer ratchet seats 44, 46 will be described in detail below. Since the rotation of the sprocket sleeve 20 is transmitted to the hub body 2 in a rotational direction, when the sprocket sleeve 20 is When the direction is rotated or at rest (without stepping action), the ratcheting engagement of the inner and outer ratchet seats 44, 46 can be released, so that the hub body 2 can be rotated independently without the interference of the sprocket holder 20.

Referring again to FIG. 2, the connecting portion extending between the two spoke rings 10, 12 is concave, and the connecting portion is basically composed of three arc concave sections, wherein the two spoke rings 10, 12 are located. The joint between the two is a large diameter arc concave edge 50, and the two spoke rings 10, 12 are smaller diameter arc concave corners 52, 54.

Figure 3 is a partial enlarged view of the hub body 2 near the spoke ring 10. As can be seen, the spoke ring 10 is slightly inclined inwardly, wherein the axis of the mounting hole 14 is also inclined inwardly at an angle with respect to the horizontal plane, and the joint portion on the inner side of the spoke ring 10 is formed by a larger diameter arc recess 50. Further, the outer circumference of the brake disc accommodating portion 16 is also connected to an arc concave corner 56 via the concave arc angle 54 of the smaller diameter, and the inner edge surface of the hub body 2 is also at an arcuating angle with respect to the arc concave corner 56. 58 is coupled to the inner peripheral wall 60 of the brake disk accommodating portion 16, and accordingly, the spoke ring 10 is formed at a joint portion with the joint portion and the brake disk accommodating portion 16 to form a joint region 62, and the cut surface of the joint region 62 is An inscribed circle 64 is approximately tangent to the arcuate recesses 54, 56, and the arcering angle 58 such that the inscribed circle 64 The center point 66 is located outside the diameter T of the fixing hole 18 in the perforated disk of the brake disk housing portion 16.

The design of the anti-rotation ring between the spoke rings 10, 12 and the joint portion and the brake disc accommodating portion 16 ensures the optimum force from the brake disc accommodating portion 16 to the spoke rings 10, 12, thereby improving the aforementioned conventional hub. The unfinished structure is missing.

Please refer to FIG. 4 and FIG. 5 again. FIG. 4 is a plan view showing the inner ratchet seat 44 of the present invention and a cross-sectional view taken along line AA of the drawing. FIG. 5 is a cross-sectional view of FIG. 4B, wherein the inner ratchet seat 44 is An outer tooth 70 is formed on the outer peripheral surface thereof, and the outer tooth 70 is in mesh with the inner tooth 72 of the corresponding hub body 2 (as shown in FIG. 2), so that the inner ratchet seat 44 and the hub body 2 can be engaged with each other. The outer side of the ratchet seat 44 is a concave-shaped ring portion 74. The inner ring portion 74 of the inner ratchet seat 44 is radially recessed to form a ratchet 68 as shown in FIG. 4A. The ratchet 68 is serrated and has a a slanted slanting flank 76, and a radial slanting side slat 78 (as in Figures 4 and 5), the inner ratchet seat 44 being an annular body having a sleeve hole 80 therein, a portion of the pivot 4 extending through The sleeve hole 80, the inner end ring surface 82 of the inner ratchet seat 44 is further disposed in the axial direction against the outer ring of the ball bearing 34.

In addition, the concave-shaped ring portion 74 of the inner ratchet seat 44 is supported by the hub body 2 by a snap ring 84 to prevent the inner ratchet seat 44 from sliding in the axial direction (as shown in FIG. 2). Therefore, the inner ratchet seat 44 of the present invention is non-floating and fixedly mounted on the hub body 2 in the axial direction with respect to the aforementioned patents.

6 is a plan view showing the outer ratchet seat 46 of the present invention, wherein FIG. 7 is a cross-sectional view of FIG. 6A, wherein the outer ratchet seat 46 has a similar structure as the inner ratchet seat 44, the outer ratchet The inner end surface of the seat 46 is provided with a ratchet 86 meshing with the ratchet teeth 68 of the inner ratchet seat 44, and will not be described again. External teeth 90 are disposed on the outer ring edge of the back surface 88 of the outer ratchet seat 46, and the external teeth 90 are in mesh with the internal teeth 92 of the corresponding toothed sleeves 20 to make the outer ratchet seat 46 and the sprocket sleeve 20 can be engaged with each other, however, the linkage must be performed under the condition that the outer ratchet seat 46 can slide axially along the inner teeth 92. As described above, the outer ratchet seat 46 is biased toward it by the compression spring 48. The engaging position exerts a pressing force on the ratchet teeth 68 of the inner ratchet seat 44 on the side of the hub body. As shown in the sectional view of Fig. 5A, the axial portion of the outer ratchet seat 46 having the ratchet teeth is formed slightly larger than the ratchet teeth 90. Outer diameter D.

Also formed in the outer ratchet seat 46 is a set of ports 91 that pass through the pivot 4 to the support section 22, as well as the inner ratchet seat 44, which is formed with a slanted oblique wing 94 and a steep steep side wing. 96, which is divided in a manner corresponding to the ratchet teeth 68 of the inner ratchet seat 44; and in one rotational direction, the inner and outer ratchet seats 44, 46 are approximately slightly parallel to the radial direction of the ratchet teeth 86, 88. The 96 abut each other so that the toothed disc driving force applied to the sprocket sleeve 20 continues to act on the hub body 2 without any deviation and is continuously transmitted to the rear wheel. When no driving force of the toothed disc acts on the sprocket seat 20, the outer ratchet seat 46 is stationary, and the elastic force of the compression spring 48 of the outer ratchet seat 46 is elastically pressed, and the ratchet 86 is slanted and inner 94 The oblique side wings 76 of the ratchet seat 44 ratchet 68 slide obliquely against each other, so that the outer ratchet seat 46 can thus produce a lateral side sliding in the axial direction (as shown in Fig. 2), and because of its relationship with the oblique side wing 94 and the steep side wing 76 With minimal frictional sliding, there is almost no torque transmission, that is, the toothed sleeve 20 is stationary or interlocking with respect to the continuously rotating hub body 2, wherein the inner ratchet seat 44 and the hub body 2 They are rotatably fixedly coupled to each other in the axial direction, so that the inner ratchet seat 44 can be held at a position relative to the hub body 2.

Figure 6 shows an embodiment in which the hub 1 is used for the front wheel, wherein the structural design according to Figures 2 and 3 can also be applied to the front wheel hub 1, except for the sprocket-free seat, the front wheel hub 1 is substantially similar to the structure of the rear wheel hub, that is, the hub body 2 is rotatably mounted on a pivot shaft 4, which is a hollow shaft tube and encloses the two sleeves 6, 8 at the end thereof. The hub body 2 has two spoke rings 10, 12, wherein a brake disc receiving portion 16 is adjacent to the spoke ring 10, and the connecting portion extending between the spoke rings 10, 12 is connected as described above; in the present hub 1 The arcuate recess 62 is also formed to be coupled to the inner peripheral wall 60 of the brake disc accommodating portion 16, which is located outside the diameter T of the fixing hole 18 in the perforated disc of the brake disc housing portion 16 so that the front wheel The optimum force from the brake disk housing portion 16 to the spoke rings 10, 12 can also be ensured in the hub 1.

Another feature of the embodiment of Figure 6 is that the bearing of the two ball bearings 32, 34 does not directly abut the pivot 4 in the manner of the previous embodiment, but rather against the sleeves 6, 8, the sleeve 6, 8 provides axial support for the inner rings of the ball bearings 32, 34 with bearing shoulders 98, 100, respectively; the other end is achieved by the support of the annular end faces 102, 104 of the sleeve-like pivot 4, the bearing 32 The axial support of the outer ring of 34 can be achieved as in the embodiment of Fig. 2.

In the above embodiment, the mounting holes 14 are provided on the spoke rings 10, 12 in a manner inclined relative to the pivot 4, and in order to simplify the assembly of the spokes, the mounting holes 14 may be inclined inward from the position of the parallel axes. An angle. The embodiment is particularly suitable for the fixing of the quick release member to the rear axle receiving device of the bicycle frame. Such a design, as described above, the quick release member can be used with a high loading bicycle within a wheel diameter of 20 mm, such as an off-road vehicle. Since the inner diameter of the pivot 4 is made sufficiently large, such a quick release member can also be used in the embodiment described, in principle as long as it is replaced by a simple bushing 6, 8 in which the bushing and the pivot The shaft 4 is screwable and can be used for quick release parts of different diameters.

The hub 1 provided by the present invention, wherein the geometric center of gravity is located in the porous disc of the brake disc accommodating portion 16 by the connecting region 62 formed between the spoke ring 10 and the joint portion and the brake disc accommodating portion 16 The fixing hole 18 is outside the diameter T.

However, the above description is only the preferred embodiment of the present creation. The scope of the implementation of this book, that is, the simple equivalent changes and modifications made by Dafan according to the scope of the patent application and the content of the creation of the creation are still within the scope of this new patent.

1‧‧·wheels

2‧‧‧hud body

4‧‧‧ pivot

6, 8‧‧‧ bushings

10, 12‧‧‧ spoke rings

14‧‧‧Installation holes

16‧‧‧Brake disk housing

18‧‧‧Fixed holes

20‧‧‧ toothed socket

22‧‧‧Support section

24‧‧‧ bearing device

26‧‧‧Bumping

28, 30‧‧‧ ring shoulder

32, 34‧‧‧ ball bearings

36‧‧‧ Radial convex

38‧‧‧ inside convex

40‧‧‧ Nuts

42‧‧‧Class flange

44‧‧‧Inner ratchet seat

46‧‧‧ outer ratchet seat

48‧‧‧Compression spring

50‧‧‧ arc concave edge

52, 54‧‧‧ arc concave angle

72‧‧‧ internal teeth

84‧‧‧ card ring

92‧‧‧ internal teeth

T‧‧‧ diameter

Claims (8)

A hub includes: a hub body that is pivotable and rotatable, two spoke rings that protrude in a radial direction, a brake disc receiving portion that is adjacent to a spoke ring and has a plurality of common porous discs a fixing hole; wherein one of the spoke rings and the hub body and the brake disk receiving portion are coupled to each other to form a joint region, wherein the geometric center of gravity of the joint region is a porous disk located in the brake disk receiving portion The fixing hole is outside the diameter. The hub of claim 1, wherein the geometric center of gravity is a center point of an inscribed circle diameter of the joining region. The hub according to claim 1, wherein the connecting portion extending between the hub body and the second spoke ring is concave. The hub of claim 3, wherein the joint is composed of at least three arcuate sections. The hub of claim 1, wherein the spoke ring is provided with a mounting hole for assembling the spokes, and the mounting hole can be inclined at an angle inward from the position of the parallel axis. The hub of claim 1, wherein the pivot is provided with a sleeve at both ends, and the two sleeves can limit the ball bearings on the pivot. A hub includes: a hub body that is pivotable and rotatable, two spoke rings that protrude in a radial direction, and a toothed disc sleeve that can be brought into the rotation direction of the hub body Engagement or idling in another direction of rotation; characterized in that one side of the hub body is sleeved with inner and outer ratchet seats that are engageable with each other, and a preloading direction is applied to the direction of engagement by a compression spring Tightening force, wherein the inner ratchet seat is coupled with the hub system in an axial direction, and the outer ratchet seat is coupled with the toothed sleeve sleeve in the axial direction, and is also in the rack housing It is a floating axial displacement. The hub according to claim 7, wherein the inner and outer ratchet seat engaging surfaces are ratchet teeth, the ratchet teeth are serrated and have an inclined oblique side wing, and a radial side steep wing .