Split type brake disc

Abstract

The utility model relates to a split type brake disc which comprises an outer ring disc and a middle connecting disc, the center of the outer ring disc is provided with a hollow area used for containing the middle connecting disc, the outer ring disc is provided with an inner connecting protrusion in the first direction of the inner ring wall, and the middle connecting disc is provided with an outer connecting protrusion used for being connected with the inner connecting protrusion in the second direction of the outer ring wall. The inner connection protrusion and the outer connection protrusion are oppositely connected to form a hole structure, the inner connection protrusion and the outer connection protrusion are connected through a fastener, the first direction points to the center of the outer ring disc and the center of the middle connection disc, and the second direction is opposite to the first direction. The brake disc is reasonable in structural design, light weight is achieved, meanwhile, it is ensured that the outer ring disc and the middle connecting disc are matched more tightly, the problem that the brake disc deforms possibly due to uneven stress is solved, and the risk of rubbing the disc is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle brake disc, in particular to a split type brake disc. BACKGROUND

[0002] The bicycle brake disc, also known as a disc brake, is an important component of a bicycle disc brake system. The brake disc is fixed on the wheel and is a disc-shaped component that achieves braking effect by applying frictional pressure to the brake disc through brake pads in the brake caliper. When the rider pulls the brake handle, the brake cable (or oil pipe) transmits force to the brake caliper, and the brake pads in the caliper tightly adhere to the brake disc to generate braking force through friction, thereby slowing down or stopping the movement of the bicycle. Most brake discs on the market are one-piece stainless steel brake discs, which are easy to process and durable, but the product is heavy and cannot be lightweighted. In addition, when the local part of the one-piece brake disc is worn out, the entire brake disc needs to be replaced, resulting in high maintenance costs and serious material waste.

[0003] However, the split type brake disc has the problem of unreasonable structure design, which not only easily causes the disc to be scratched, but also makes the maintenance cost higher and does not achieve sufficient lightweight. SUMMARY

[0004] To solve the above technical problems, the utility model provides a split type brake disc, which comprises an outer ring disc and a middle disc, and the outer ring disc is provided with a hollow area in the center for accommodating the middle disc. The outer ring disc is provided with an inner tangent protrusion along the first direction of the inner ring wall, and the middle disc is provided with an outer tangent protrusion along the second direction of the outer ring wall for connecting with the inner tangent protrusion. The inner tangent protrusion and the outer tangent protrusion are connected by a fastener, and the first direction is directed to the center of the outer ring disc and the middle disc, and the second direction is the reverse direction of the first direction.

[0005] Preferably, the end of the inner tangent protrusion is provided with a butt joint A port, and the end of the outer tangent protrusion is provided with a butt joint B port. When the butt joint A port and the butt joint B port are combined, a circular hole is formed.

[0006] Preferably, the butt joint A port and the butt joint B port form a joint when combined, and the joint is curved along the second direction.

[0007] Preferably, the middle disc comprises a plurality of edges, and the plurality of edges form a convex polygon. The inner tangent protrusion is arranged at the top corner of the convex polygon.

[0008] Preferably, the convex polygon is a regular polygon, and the number of sides of the regular polygon is any one of a multiple of 5, a multiple of 6, and a multiple of 7.

[0009] Preferably, the fastener comprises a rivet and a cap, one end of the rivet passes through the round hole, and the other end of the rivet is fixed with the cap.

[0010] Preferably, the fastener is made of titanium alloy material.

[0011] Preferably, the outer ring disc is made of stainless steel material.

[0012] Preferably, the middle connecting disc is made of carbon fiber material.

[0013] Preferably, the outer ring disc and the middle connecting disc are provided with hollow holes.

[0014] Compared with the prior art, the utility model has the advantages that the traditional product material single limitation is broken through, the middle connecting disc made of carbon fiber and the outer ring disc made of stainless steel material are matched, and sufficient light weight is realized.

[0015] In addition, the product structure design is reasonable, the cooperation between the outer ring disc and the middle connecting disc is more close while realizing light weight, not only the brake disc deformation problem caused by uneven stress is solved, but also the risk of scraping disc is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure schematic view of a preferred embodiment of the split type brake disc provided by the utility model is shown.

[0017] Figure 2 The structure schematic view of the outer ring disc is shown. Figure 1

[0018] The structure schematic view of the middle connecting disc is shown. Figure 3 Figure 1 The top view structure schematic view when the outer ring disc and the middle connecting disc of the utility model are docked is shown.

[0019] Figure 4 The structure schematic view of the fastener is shown.

[0020] Figure 5 The structure schematic view of the fastener is shown. Figure 1

[0021] The reference signs in the drawing are as follows: 1, outer ring disc; 11, inner connecting protrusion; 11a, docking A port; 2, middle connecting disc; 21, outer connecting protrusion; 21a, docking B port; 3, fastener; 31, rivet; 32, cap; 4, hollow hole; 5, joint. DETAILED DESCRIPTION ​​

[0022] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0023] The specific implementation of the utility model will be described in detail below in combination with specific embodiments.

[0024] Please refer to Figures 1 to 5 The utility model discloses a split brake disc, including outer ring disc 1 and middle disc 2, the hollow region for accommodating middle disc 2 is seted up in the center of outer ring disc 1, and the inner tangent convex 11 is equipped in the first direction along the inner ring wall of outer ring disc 1, and the outer tangent convex 21 is equipped in the second direction along the outer ring wall of middle disc 2 to be connected with the inner tangent convex 11, and the inner tangent convex 11 is connected with the outer tangent convex 21 to form hole structure, and the inner tangent convex 11 is connected with the outer tangent convex 21 through fastener 3, and the first direction points to the center of outer ring disc 1 and middle disc 2, and the second direction is the reverse direction of the first direction.

[0025] Outer ring disc 1 and middle disc 2 are mutually combined by the inner tangent convex 11 and the outer tangent convex 21 and are fixed by fastener 3, middle disc 2 is made of carbon fiber material, so that the split brake disc achieves the purpose of light weight, and outer ring disc 1 is made of stainless steel material, so that the brake pad part of the split brake disc is still durable.

[0026] In addition, since the split brake disc is formed by the butt joint of outer ring disc 1 and middle disc 2, when outer ring disc 1 or middle disc 2 is damaged during processing, the damaged disc body can be directly discarded, compared with the traditional integrated stainless steel brake disc, the split brake disc of the application greatly reduces the material loss, and when outer ring disc 1 or middle disc 2 is damaged during use, it can also be disassembled and removed, and the subsequent staff can replace new outer ring disc 1 or middle disc 2, so as to enhance the reuse rate of outer ring disc 1 and middle disc 2 and reduce the waste of materials.

[0027] In the embodiments of the utility model, please refer to Figure 2 、 Figure 3 And Figure 4 The inner tangent convex 11 is arranged at the top corner of the convex polygon, the end of the inner tangent convex 11 is provided with a butt joint A port 11a, the end of the outer tangent convex 21 is provided with a butt joint B port 21a, and a round hole is formed when the butt joint A port 11a and the butt joint B port 21a are combined.

[0028] For the design of the docking A port 11a and the docking B port 21a, the docking A port 11a on the inner protrusion 11 and the docking B port 21a on the outer protrusion 21 can both adopt a semicircular structure, or two special circular structures capable of abutting to form a circular hole, or the docking A port 11a and the docking B port 21a are provided with serrated structures at the abutting end faces, so that the docking end of the inner protrusion 11 and the docking end of the outer protrusion 21 can interact when the outer ring disc 1 and the middle connecting disc 2 are assembled, and the specific structure of the docking A port 11a and the docking B port 21a is not limited to the above-mentioned forms.

[0029] Meanwhile, when the docking A port 11a and the docking B port 21a abut, a joint 5 is formed, and the joint 5 is curved along the second direction, so that the outer ring disc 1 and the middle connecting disc 2 are more closely assembled, the structure is simple, the contact area between the inner protrusion 11 and the outer protrusion 21 when they are docked is maximized, the problem of deformation of the brake disc caused by insufficient stress surface is solved, and the risk of scratching the disc is effectively reduced.

[0030] In addition, in order to make the middle connecting disc 2 more solid and durable, the middle connecting disc 2 in the scheme is designed as a convex polygonal structure, and in order to facilitate the production and processing of the middle connecting disc 2, the shape thereof can be designed as a regular polygon. Meanwhile, since the middle connecting disc 2 is made of carbon fiber material, in order to better distribute the force between the outer ring disc 1 and the middle connecting disc 2 when the outer ring disc 1 brakes, further avoid the deformation of the middle connecting disc 2 due to stress, and make the docking transmission between the outer ring disc 1 and the middle connecting disc 2 more stable, the number of sides of the regular polygon can be any one of a multiple of 5, a multiple of 6 and a multiple of 7.

[0031] It should be noted that, in order to make the middle connecting disc 2 better disperse the force applied by the outer ring disc 1, the shape of the middle connecting disc 2 is preferably a regular hexagon. Meanwhile, the shape of the regular hexagon belongs to the most stable structure, which can make the middle connecting disc 2 have better strength.

[0032] In the embodiment of the utility model, please refer to Figure 1 and Figure 5 The fastener 3 comprises a rivet 31 and a nail cap 32, one end of the rivet 31 passes through the circular hole, and the other end of the rivet 31 is fixed with the nail cap 32, which is simple in structure, durable and convenient to process.

[0033] Meanwhile, the fastener 3 is made of titanium alloy material, and the fastener 3 made of aluminum alloy has high strength, so that the hidden danger of wear is not easy to occur, and the weight and heat dissipation performance are also relatively good.

[0034] In the scheme, the outer ring disc 1 and the middle connecting disc 2 are both provided with the hollow hole 4, which on the one hand reduces the overall weight of the split brake disc, further realizes the lightweight purpose of the split brake disc, and on the other hand the hollow design can also enhance the overall heat dissipation effect of the brake disc.

[0035] In summary, the above only for the preferred embodiments of the present application, and not to limit the present application, any modification, equivalent replacement and improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A split brake disc, comprising an outer disc (1) and a middle disc (2), the outer disc (1) is provided with a hollow area in the center for accommodating the middle disc (2), characterized in that: The outer ring disc (1) is provided with an inner convex (11) along the first direction of the inner ring wall, the middle connecting disc (2) is provided with an outer convex (21) along the second direction of the outer ring wall to connect with the inner convex (11), the inner convex (11) and the outer convex (21) are opposite to each other to form a hole structure, the inner convex (11) and the outer convex (21) are connected by a fastener (3), the first direction points to the center of the outer ring disc (1) and the middle connecting disc (2), and the second direction is the reverse direction of the first direction.

2. The split brake disc of claim 1, wherein: The end of the inner convex (11) is provided with a butt joint A port (11a), the end of the outer convex (21) is provided with a butt joint B port (21a), and the butt joint A port (11a) and the butt joint B port (21a) are abutted to form a circular hole.

3. The split brake disc of claim 2, wherein, The butt joint A port (11a) and the butt joint B port (21a) are abutted to form a joint (5), and the joint (5) is curved along the second direction.

4. The split brake disc of claim 1, wherein: The middle connecting disc (2) comprises a plurality of edges, and the plurality of edges surround a convex polygon, and the inner convex (11) is arranged at a top corner of the convex polygon.

5. The split brake disc of claim 4, wherein: The convex polygon is a regular polygon, and the number of edges of the regular polygon is any one of a multiple of 5, a multiple of 6, and a multiple of 7.

6. The split brake disc of claim 1, wherein: The fastener (3) comprises a rivet (31) and a cap (32), one end of the rivet (31) passes through the circular hole, and the other end of the rivet (31) is fixed with the cap (32).

7. The split brake disc of claim 6, wherein: The fastener (3) is made of titanium alloy material.

8. The split brake disc of claim 1, wherein: The outer ring disc (1) is made of stainless steel material.

9. The split brake disc of claim 1, wherein: The middle connecting disc (2) is made of carbon fiber material.

10. The split brake disc of claim 1, wherein: The outer ring disc (1) and the middle connecting disc (2) are both provided with a hollow hole (4).

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