TWM525292U - Brake disk structure of bicycle - Google Patents

Description

Bicycle brake disc structure

The present invention relates to the field of bicycle brakes, and in particular to a brake disc structure that promotes the cooling of the brake surface.

In recent years, some bicycles have had a disc brake system. The braking power of the disc brake system is directly or indirectly related to the force exerted by the brake lever on the brake disc. Moreover, regardless of the riding conditions of the climate or bicycle, the braking performance of the disc brake system is generally consistent.

For example, Taiwan Patent Publication No. 201325984 discloses a front disc brake system including a disc brake caliper and a brake operating handle (or actuating mechanism) for use in a front wheel portion of a bicycle. In principle, the front wheel has a hub for fixed connection to a brake disc. The disc brake caliper is mounted on a front fork, and the brake operating handle is assembled on the handle of the bicycle, and the brake caliper is controlled by a hydraulic brake system to block the brake disc, preventing the rotation of the front wheel, stopping the rotation of the bicycle or slow down.

Although the disc brake system provides excellent performance, the brake action generates a large amount of heat between the disc brake caliper and the brake disc, and heat must be dissipated so as not to adversely affect the brake action.

The aforementioned brake disc has an outer portion and a cooling fin. The outer portion has first and second brake surfaces that face opposite axial directions. The cooling fins are arranged on one of the first and second braking surfaces in a radial direction.

In particular, Taiwan’s invention publication No. 201325984 provides several types of cooling The way the heat sink is coupled to the outer portion is first formed in one piece, that is, the outer portion and the cooling fin can be integrated into a single-piece member. Secondly, the outer portion and the cooling fin are separate members which can be joined or secured together by technical means such as welding or brazing. The third is the cladding mode, which divides the external partition into two brake components, and extends the attachment portion of the cooling fins to the two sides of the attachment portion with the two brake components to form a one-piece member.

The former two-connection method is a technical means that is conventionally used in conventional knowledge, and naturally does not have substantial progress. The rear cladding structure is not only difficult to align, but also delays the assembly time, and has many components, the heat conduction is relatively slow, and the heat dissipation effect is not as expected.

Therefore, how to improve the structure of the bicycle brake disc has become an urgent problem to be solved in this creation.

In view of this, the present author proposes a bicycle brake disc structure, the main purpose of which is to use an aligned structure to complete a suitable brake disc with a small number of parts, which not only assembles quickly, but also has a better heat dissipation effect than the prior art.

Due to the above object, the brake disc of the present invention comprises: an outer ring having a ring outer wall, a plurality of ring inner walls and a plurality of engaging arms, each connecting arm connecting two adjacent ring inner walls, and a combination thereof An inner ring structure comprising: a hub mounting structure having a plurality of connecting arms connected to each other and extending outward at an angle, and forming a mounting space for assembling the hub at the gathering portion of each connecting arm a plurality of second joint portions, each of the second joint portions is disposed on the connecting arm; a plurality of heat dissipating portions, each heat dissipating portion is connected to two adjacent second joint portions, so that the connecting arm and the heat dissipating portion are integrally designed; And each receiving portion receives a corresponding engaging arm, and the limiting joint is aligned with the second joint and joined together.

The inner structure of the ring further has a plurality of first joint portions, each of the first joint portions is adjacent to the installation space and located at an gathering portion of the adjacent two connecting arms, and the second joint portion is not at the same end of the connecting arm.

In addition, the outer side of the heat dissipating portion has a flange holding the outer ring. The outer side of the heat dissipating portion has a straight side substantially parallel to the inner wall of the ring, and one end of the straight side is connected to the second joint portion of the connecting arm through a curved side, and the other end is connected to the second joint portion of the other connecting arm via a beveled edge. And forming a tip at the junction of the straight side and the oblique side, the tip shape being substantially the same as the shape formed by the outer ring connecting the engaging arms with the inner wall of the ring. The inner side of the heat dissipating portion is connected to two adjacent connecting arms and together forms a hollow portion, and at least one concave and convex structure is formed on the heat dissipating portion, and the concave and convex structure is biased toward the inner side of the heat dissipating portion.

The outer wall of the outer ring is polygonal and includes a plurality of flat portions, each flat portion being substantially parallel to the inner wall of the respective ring. Secondly, the outer wall of the ring has a plurality of recesses, each recess joining together two adjacent flat portions. The outer ring also has a plurality of heat dissipation holes distributed in the outer ring near the outer wall of the ring, and each of the heat dissipation holes communicates with the two sides of the outer ring.

Therefore, the brake disc of the present invention adopts a configuration in which the accommodating portion accommodates the engaging arm, and the joint portion can be aligned with the second joint portion to complete the fastening work as soon as possible. Moreover, the number of parts constructed in the outer ring combined with the ring is less than that of the prior art, so the assembly rate is very fast and has excellent heat dissipation effect.

Then, based on the detailed description of the related embodiments, the techniques, means and functions employed are described. It is believed that the above objects, structures and features of the present invention can be obtained from a deep and specific understanding.

10‧‧‧煞盘盘

20‧‧‧Outer Ring

21‧‧‧ outer wall

22‧‧‧ Flat Department

23‧‧‧ recess

24‧‧‧ ring inner wall

25‧‧‧Connecting arm

26‧‧‧Combination Department

27‧‧‧ vents

30‧‧‧In-loop structure

31‧‧‧Second junction

32‧‧·Wheel mounting structure

33‧‧‧镂空部

34‧‧‧Connecting arm

36‧‧‧Installation space

38‧‧‧ First Joint Department

40‧‧‧ Department of heat dissipation

41‧‧‧ 曲边

42‧‧‧ inside

43‧‧‧ tip

44‧‧‧ outside

45‧‧‧ concave structure

46‧‧‧Bevel

47‧‧‧ accommodating department

48‧‧‧ Straight edge

49‧‧‧Flange

50‧‧‧fasteners

C‧‧‧ center point

Figure 1 is an exploded view of a preferred embodiment of the present brake disc.

Figure 2 is a plan view of the outer ring.

Figure 3 is a plan view of the structure inside the ring.

Figure 4 is a combined plan view of the created brake disc.

Figure 5 is a combined plan view of the back of the brake disc.

Fig. 6 is a cross-sectional view taken along line A-A of Fig. 4.

Fig. 7 is a cross-sectional view taken along line B-B of Fig. 4.

Referring to Fig. 1, a specific structure of a preferred embodiment of the brake disc 10 is illustrated. A plurality of rivet-like fasteners 50 are used to secure an outer ring 20 around an inner ring structure 30 to present the brake disc 10 A flat disc that can be assembled with the hub.

In Fig. 2, the outer ring 20 has a ring outer wall 21, a plurality of ring inner walls 24 and a plurality of engaging arms 25. The outer ring wall 21 includes a plurality of flat portions 22 and a plurality of recesses 23, each of which couples two adjacent flat portions 22 together such that the outer annular wall 21 surrounds the inner wall 24 of the ring and the outer edge of the engaging arm 25.

Each annular inner wall 24 is generally parallel to the respective flat portion 22, giving the outer ring 20 a polygonal design. The two adjacent inner ring walls 24 are integrally formed with the root of the engaging arm 25 so that the outer ring 20 has a shape that conforms to the contour of the inner structure.

Each of the engaging arms 25 has a joint portion 26. The joint portion 26 is a fisheye hole. A virtual line passing through the axis of the joint portion 26 is drawn, and a virtual line extending along the flat portion 22 is staggered, and it is known that the two virtual line clips have an angle θ of about 75° to 110°. Thus, the engagement arm 25 is substantially perpendicular to the flat portion 22 (or the inner ring wall 24).

In addition, the outer ring 20 has a plurality of heat dissipation holes 27 distributed in the outer ring 20 near the outer wall 21 of the ring. Each of the heat dissipation holes 27 communicates with the two sides of the outer ring 20 to increase the contact of the outer ring 20. The area of the air.

Next, referring to FIG. 3, the in-ring structure 30 includes a hub mounting structure 32, a plurality of first joint portions 38, a plurality of second joint portions 31, and a plurality of heat radiating portions 40.

Wherein, the hub mounting structure 32 has a plurality of connecting arms 34 which are connected to each other and extend outward at an angle, and a mounting space 36 for assembling the hub is formed at the gathering portion of each connecting arm 34. In the present embodiment, the installation space 36 is similar to the six-pointed star shape. The mounting space 36 of certain embodiments may be round or otherwise shaped for hub mounting.

Each of the first joint portion 38 and the second joint portion 31 may be a hole penetrating the connecting arm 34, such as a fisheye hole or the like. The first joint portion 38 is located at an gathering portion of the adjacent two connecting arms 34, which is close to The installation space 36 is not at the same end of the connecting arm 34 as the second joint portion 31. The distance from the center point C of the hub mounting structure 32 to each of the first joint portions 38 is the same, so that the assembly of the hub to the mounting space 36 is less likely to cause eccentricity.

Each of the heat dissipating portions 40 is connected to two adjacent second joint portions 31, so that the heat dissipating portion 40 and the connecting arm 34 are designed to be integrated. The heat dissipating portions 40 are spaced apart from each other to form a plurality of receiving portions 47. Each of the receiving portions 47 is located between the two adjacent heat dissipating portions 40 to guide the second bonding portion 31 to communicate with the outside.

In addition, the heat dissipating portion 40 is substantially triangular, and the outer side 44 defines a flange 49 conforming to the contour of the heat dissipating portion 40. The outer side 44 of the heat dissipating portion 40 is divided into a curved side 41, a beveled edge 46 and a straight side 48. The straight side 48 is substantially parallel to the inner wall of the ring, and one end thereof is connected to the second joint portion 31 of the connecting arm 34 through the curved edge 41, and the second end portion 31 of the next connecting arm 34 is connected to the other end via the oblique side 46. A tip end 43 is formed at the junction of the straight edge 48 and the beveled edge 46. The tip end 43 is an arcuate corner having a shape substantially the same as the outer ring shape formed by the inner wall of the ring connecting the engaging arms.

The inner side 42 of the heat dissipating portion 40 is coupled to two adjacent connecting arms 34 to jointly form a hollow portion 33 to facilitate the dissipation of thermal energy. Each of the heat dissipating portions 40 has two side surfaces, one of which forms a two-concave structure 45 and the other side has a concavo-convex structure 45.

It is not difficult to understand from the first drawing that the uneven structure 45 of the present embodiment is a groove that sinks into the side surface of the heat radiating portion 40. The uneven structure 45 is biased toward the inner side 42 of the heat radiating portion 40, and like the uneven plate, the area of the heat radiating portion 40 contacting the air can be increased.

Next, as seen in Figures 5-7, each of the receiving portions 47 receives a corresponding engaging arm 25, and the restricting joint portion 26 is aligned with the second joint portion 31 to be passed by the fastener 50, so that the outer ring 20 is coupled to the inner ring structure 30. together. At this point, the flange 43 will support the outer ring 20 such that the outer ring 20 is flush with at least one side of the in-loop construction 30. Therefore, the brake disc 10 has fewer components and is quick to assemble.

Thus, the tip end 43 of the heat dissipating portion 40 is limited by the inner wall 24 of the ring and the engaging arm 25, and the curved edge 41 of the outer side 44 of the heat dissipating portion 40 is blocked by the next engaging arm 25 such that the straight side 48 is substantially parallel to the inner wall 24 of the ring. As the wheel rotates, the outer ring 20 is urged to rotate in the same direction as the wheel through the hub mounting structure 32. When the disc brake caliper clamps the brake disc 10, preventing the wheel from rotating or decelerating generates a large amount of heat, except for the dispersion In addition to the heat holes 27, it is also possible to transmit heat to the heat radiating portion 40 via the outer ring 20, and to exchange heat with the cold air through the concave-convex structure 45 and the hollow portion 33, thereby achieving heat dissipation or cooling efficiency.

10‧‧‧煞盘盘

20‧‧‧Outer Ring

21‧‧‧ outer wall

22‧‧‧ Flat Department

23‧‧‧ recess

24‧‧‧ ring inner wall

25‧‧‧Connecting arm

26‧‧‧Combination Department

27‧‧‧ vents

30‧‧‧In-loop structure

31‧‧‧Second junction

32‧‧·Wheel mounting structure

33‧‧‧镂空部

34‧‧‧Connecting arm

36‧‧‧Installation space

38‧‧‧ First Joint Department

40‧‧‧ Department of heat dissipation

41‧‧‧ 曲边

42‧‧‧ inside

43‧‧‧ tip

44‧‧‧ outside

45‧‧‧ concave structure

46‧‧‧Bevel

47‧‧‧ accommodating department

48‧‧‧ Straight edge

49‧‧‧Flange

50‧‧‧fasteners

Claims (10)

A bicycle brake disc structure comprises: an outer ring (20) having a ring outer wall (21), a plurality of ring inner walls (24) and a plurality of engaging arms (25) on two adjacent ring inner walls (24) Correspondingly connecting the corresponding articulating arms (25), each engaging arm (25) has a joint (26); an inner ring structure (30) comprising: a hub mounting structure (32) having a plurality of connecting arms ( 34), the connecting arms (34) are connected to each other and extend outward at an angle, and a mounting space (36) for assembling the hub is formed at the gathering portion of each connecting arm (34); and a plurality of second joints (31) Each second joint portion (31) is disposed on the connecting arm (34); a plurality of heat dissipating portions (40), and the heat dissipating portion (40) is connected to the two adjacent second joint portions (31) so as to be connected The arm (34) is integrally formed with the heat dissipating portion (40); a plurality of receiving portions (47) each receiving a corresponding engaging arm (25), and the limiting joint portion (26) is aligned with the second joint portion (31) ) and combined. The bicycle brake disc structure according to claim 1, wherein the inner ring structure (30) further has a plurality of first joint portions (38), each of the first joint portions (38) being close to the installation space ( 36) and located at the gathering portion of the adjacent two connecting arms (34), which is not at the same end of the connecting arm (34) as the second joint portion (31). The bicycle brake disc structure according to claim 1, wherein the outer side (44) of the heat dissipating portion (40) has a flange (49) for supporting the outer ring (20). The bicycle brake disc structure according to claim 3, wherein the outer side (44) of the heat dissipating portion (40) has a straight side (48) substantially parallel to the inner wall (44) of the ring, the straight side ( 48) one end is connected to the second joint portion (31) of the connecting arm (34) through a curved edge (41), and the other end is connected to the second joint portion of the other connecting arm (34) via a oblique side (46) (31) And forming a tip (43) at the junction of the straight edge (48) and the bevel (46), the tip (43) being substantially identical in shape to the outer ring (20) joining the engagement arms with the inner wall (24) of the ring (25) ) The shape formed. The bicycle brake disc structure according to claim 1, wherein the heat dissipation portion (40) The inner side (42) joins two adjacent connecting arms (34) to form a hollow portion (33). The bicycle brake disc structure according to claim 1, wherein the heat dissipating portion (40) forms at least one concave-convex structure (45) which is biased toward the inner side of the heat dissipating portion (40) (42) ). The bicycle brake disc structure according to claim 1, wherein the outer wall (21) of the ring is polygonal, and includes a plurality of flat portions (22), each flat portion (22) and a corresponding inner wall of the ring (24) is roughly parallel. The bicycle brake disc structure according to claim 7, wherein the outer wall (21) has a plurality of recesses (23), and each recess (23) couples two adjacent flat portions (22) together. The bicycle brake disc structure according to claim 1, wherein the outer ring (20) has a plurality of heat dissipation holes (27), and two sides of each of the heat dissipation holes (27) and the outer ring (20). The same. The bicycle brake disc structure according to claim 9, wherein the heat dissipation hole (27) is located at a portion of the outer ring (20) near the outer wall (21) of the ring.