A composite bimetallic brake disc

Abstract

This utility model discloses a composite bimetallic brake disc, belonging to the technical field of brake discs. It includes a disc ring and a connecting cap. The connecting cap has an open end and a closed end. The disc ring has a central hole, and the open end of the connecting cap is installed within the central hole. Multiple grooves are formed inside the central hole of the disc ring. Multiple protrusions are formed outward from the open end of the connecting cap, and these protrusions are adapted to and abut against the grooves. Multiple bosses are formed from the inside out from the open end of the connecting cap, protruding beyond the central hole of the disc ring. The end of each boss away from the open end abuts against the disc ring. This utility model effectively prevents the connecting cap and disc ring from detaching, increases the stability of the connection between the connecting cap and disc ring, avoids potential driving safety hazards, and increases driving safety.

Description

Technical Field

[0001] This utility model relates to the technical field of brake discs, and in particular to a composite bimetallic brake disc. Background Technology

[0002] Brake discs are an essential component of a vehicle's braking system. Fixed to the axle, they rotate with the wheels. During braking, brake pads are pressed against the brake disc by the caliper pistons. The friction between the brake pads and the brake disc reduces the wheel speed, achieving the purpose of deceleration and braking. Because brake discs need to withstand the pressure and friction of the brake pads, they are prone to wear during relative movement with the brake pads. Therefore, the materials used to manufacture brake discs must possess both high mechanical strength and excellent wear resistance.

[0003] Existing brake discs are mostly made of all-cast iron or all-ceramic, which are too heavy and have complex manufacturing processes. To reduce the weight of brake discs, bimetallic composite brake discs have emerged, which include a disc ring and a connecting cap. The disc ring has a center hole, and the connecting cap has a closed end and an open end. The open end of the connecting cap is installed in the center hole. The disc ring and the connecting cap are made of two different metals.

[0004] Although bimetallic composite brake discs reduce brake disc weight and increase friction, there are defects in their assembly. Current assembly processes for bimetallic composite brake discs involve inserting the connector cap by aligning the open end with the center hole of the disc ring. This can easily result in a weak connection between the disc ring and the connector cap, creating a potential safety hazard. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a composite bimetallic brake disc that prevents the connecting cap and disc ring from detaching, increases the stability of the connection between the connecting cap and disc ring, avoids potential driving safety hazards, and enhances driving safety.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A composite bimetallic brake disc includes a disc ring and a connecting cap. The connecting cap includes an open end and a closed end. The disc ring has a central hole, and the open end of the connecting cap is installed in the central hole. Multiple grooves are formed inside the central hole of the disc ring. Multiple protrusions are formed outward from the open end of the connecting cap. The protrusions and grooves are adapted to each other and abut against each other. Multiple bosses are formed from the inside to the outside of the open end of the connecting cap. The bosses protrude from the central hole of the disc ring, and the end of the boss away from the open end abuts against the disc ring.

[0008] The beneficial effects of adopting the above technical solution are as follows: after the open end of the connecting cap is installed in the central hole, the end of the boss away from the open end abuts against the disc ring. The back side of the boss (the side facing the disc ring) is suspended. The connecting cap is squeezed into a concave shape by the mold, thereby locking the Z direction (axial direction of the connecting cap or disc ring), preventing the connecting cap and disc ring from falling off, increasing the stability of the connection between the connecting cap and disc ring, avoiding driving safety hazards, and increasing driving safety.

[0009] Furthermore, the boss is located at the end of the connecting cap that is away from the closed end of the open end.

[0010] The beneficial effects of adopting the above technical solution are: it facilitates locking in the Z direction, thereby increasing the connection strength between the connecting cap and the disc ring, and increasing driving safety.

[0011] Furthermore, the opening end of the connecting cap is provided with multiple limiting grooves, which abut against the center hole of the disc ring. The disc ring is hollow at the abutment part between the limiting groove and the disc ring. After the connecting cap is squeezed by the mold, multiple positioning grooves that abut against and match the limiting grooves are formed inside the center hole of the disc ring.

[0012] The beneficial effects of adopting the above technical solution are as follows: at the contact point between the limiting groove of the connecting cap and the disc ring, the disc ring adopts a hollowing process (hollow structure), which ensures that the pressure on the disc ring when the mold extrudes the connecting cap is minimized, and will not cause the disc ring to break under stress or excessive stress, thus posing a risk of disc ring breakage and affecting driving safety; in addition, after the connecting cap is extruded by the mold, multiple positioning grooves that abut against and match the limiting groove can be formed inside the center hole of the disc ring, further reinforcing the Z-axis locking of the connecting cap and the disc ring.

[0013] Furthermore, the limiting groove is located at the middle position of the opening end of the connecting cap.

[0014] The beneficial effect of adopting the above technical solution is that it makes the pressure of the connecting cap on the disc more uniform.

[0015] Furthermore, the outer side of the disc ring is provided with a sand-swirling groove, and the sand-swirling groove is located on the same side as the closed end of the connecting cap.

[0016] The beneficial effects of adopting the above technical solution are: when braking, dust and other particles tend to accumulate. The sand vortex can remove iron powder and other dust generated by the high temperature during braking, as well as sand and soil adhering to the brake surface.

[0017] Furthermore, the swirling sand groove is located near the connection between the disc ring and the connecting cap.

[0018] The beneficial effect of adopting the above technical solution is that it facilitates the sand-swirling function of the sand-swirling trough.

[0019] Furthermore, the protruding teeth are integrally formed with the connecting cap.

[0020] The beneficial effect of adopting the above technical solution is that the protruding teeth can be processed at the same time as the forming of the connecting cap.

[0021] Furthermore, the boss and the connecting cap are integrally formed.

[0022] The beneficial effect of adopting the above technical solution is that after the connecting cap is assembled into the center hole of the disc ring, a boss can be formed by stamping the inner side of the connecting cap.

[0023] Furthermore, a positioning hole is provided on the closed end of the connecting cap.

[0024] The beneficial effect of adopting the above technical solution is that the positioning hole facilitates the processing of the connecting cap. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a composite bimetallic brake disc according to the present invention;

[0026] Figure 2 This is a partial cross-sectional view of a composite bimetallic brake disc according to the present invention.

[0027] Figure 3 This is a partial cross-sectional view showing the matching of the positioning groove and the limiting groove in this utility model.

[0028] Explanation of reference numerals in the attached drawings: 1. Disc ring; 11. Center hole; 12. Groove; 13. Positioning groove; 2. Connecting cap; 21. Open end; 22. Closed end; 23. Protruding tooth; 24. Boss; 25. Limiting groove; 26. Positioning hole; 3. Sanding groove. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-3 The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0030] This utility model discloses a composite bimetallic brake disc.

[0031] Reference Figures 1-3 A composite bimetallic brake disc includes a disc ring 1 and a connecting cap 2. The connecting cap 2 includes an open end 21 and a closed end 22. The disc ring 1 has a central hole 11, and the open end 21 of the connecting cap 2 is installed in the central hole 11.

[0032] Multiple grooves 12 are evenly provided on the inner side of the central hole 11 of the disc ring 1, and the multiple grooves 12 are evenly provided along the central hole 11 of the disc ring 1; multiple protruding teeth 23 are evenly formed on the outer side of the opening end 21 of the connecting cap 2, and the multiple protruding teeth 23 are evenly provided along the opening end 21 of the connecting cap 2; furthermore, the protruding teeth 23 are integrally formed with the connecting cap 2, and the protruding teeth 23 can be processed together when forming the connecting cap 2; the protruding teeth 23 and the grooves 12 are mutually adapted and abutted and installed.

[0033] The opening end 21 of the connecting cap 2 has multiple protrusions 24 evenly formed from the inside to the outside. The protrusions 24 are evenly distributed along the opening end 21 of the connecting cap 2. The protrusions 24 protrude from the center hole 11 of the disc ring 1. The end of the protrusion 24 away from the opening end 21 abuts against the disc ring 1. The back side of the protrusion 24 (the side facing the disc ring 1) is suspended. The connecting cap 2 is pressed into a concave shape by the mold, thereby locking the Z-axis (axial direction of the connecting cap 2 or the disc ring 1), preventing the connecting cap 2 and the disc ring 1 from falling off, increasing the stability of the connection between the connecting cap 2 and the disc ring 1, avoiding driving safety hazards, and increasing driving safety.

[0034] Furthermore, the boss 24 is located at the end of the connecting cap 2, away from the closed end 22, which facilitates locking in the Z direction, thereby increasing the connection strength between the connecting cap 2 and the disc 1 and increasing driving safety. The boss 24 is integrally formed with the connecting cap 2. After the connecting cap 2 is assembled into the center hole 11 of the disc 1, the boss 24 can be formed by stamping the inner side of the connecting cap 2.

[0035] The connecting cap 2 has multiple limiting grooves 25 at its open end 21. These grooves are evenly spaced along the open end 21 and abut against the center hole 11 of the disc ring 1. The disc ring 1 has a hollow structure at the abutment point between the limiting groove 25 and the disc ring 1. The hollow structure at the abutment point between the limiting groove 25 and the disc ring 1 ensures that the pressure on the disc ring 1 is minimized when the mold extrudes the connecting cap 2, preventing the disc ring 1 from cracking or experiencing excessive stress, thus avoiding the risk of breakage and ensuring driving safety.

[0036] Furthermore, after the connecting cap 2 is pressed by the mold, a plurality of positioning grooves 13 that abut against and are adapted to the limiting groove 25 can be formed inside the center hole 11 of the disc ring 1, which can further strengthen the Z-direction locking of the connecting cap 2 and the disc ring 1.

[0037] Furthermore, the limiting groove 25 is located at the middle position of the opening end 21 of the connecting cap 2, so that the pressure of the connecting cap 2 on the disc ring 1 is more uniform.

[0038] The outer circumference of the disc 1 is provided with a sand-swirling groove 3, which is arranged along the circumference of the disc 1. The sand-swirling groove 3 and the closed end 22 of the connecting cap 2 are located on the same side. When braking, dust and other particles tend to accumulate. The sand-swirling groove 3 can remove iron powder and other dust generated by the high temperature during braking, as well as sand and dirt that stick to the brake surface.

[0039] Furthermore, the sand-swirling groove 3 is located near the connection between the disc ring 1 and the connecting cap 2, which facilitates the sand-swirling function of the sand-swirling groove 3.

[0040] The closed end 22 of the connecting cap 2 is provided with a positioning hole 26. When processing the connecting cap 2, the positioning hole 2 can be used to position the connecting cap 2. The center hole 11 of the subsequent stamping of the connecting cap 2 can also be positioned through the positioning hole 26.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite dual-metal brake disc comprising a disc ring (1) and a connecting cap (2), the connecting cap (2) comprising an open end (21) and a closed end (22), the disc ring (1) being provided with a central hole (11), the open end (21) of the connecting cap (2) being mounted in the central hole (11), characterized in that: The disc (1) has a plurality of grooves (12) inside the center hole (11). The opening end (21) of the connecting cap (2) forms a plurality of protrusions (23) outward. The protrusions (23) and the grooves (12) are adapted to each other and abut against each other. The opening end (21) of the connecting cap (2) forms a plurality of bosses (24) from the inside to the outside. The bosses (24) protrude from the center hole (11) of the disc (1). The end of the boss (24) away from the opening end (21) abuts against the disc (1).

2. The composite bimetal brake disc of claim 1, wherein: The boss (24) is located at the end of the connector cap (2) away from the closed end (22) of the open end (21).

3. The composite bimetal brake disc of claim 1, wherein: The opening end (21) of the connecting cap (2) is provided with multiple limiting grooves (25), the limiting grooves (25) abut against the center hole (11) of the disc (1), and the disc (1) is hollow at the abutting part of the limiting grooves (25) and the disc (1); after the connecting cap (2) is squeezed by the mold, multiple positioning grooves (13) that abut against and match the limiting grooves (25) are formed inside the center hole (11) of the disc (1).

4. The composite bimetal brake disc of claim 3, wherein: The limiting groove (25) is located at the middle position of the opening end (21) of the connecting cap (2).

5. The composite bimetal brake disc of claim 1, wherein: The outer side of the disc (1) is provided with a sand-swirling groove (3), and the sand-swirling groove (3) and the closed end (22) of the connecting cap (2) are located on the same side.

6. A composite bimetal brake disc according to claim 5, wherein: The swirling sand groove (3) is located near the connection between the disc ring (1) and the connecting cap (2).

7. The composite bimetal brake disc of claim 1, wherein: The protruding tooth (23) and the connecting cap (2) are integrally formed.

8. The composite bimetal brake disc of claim 1, wherein: The boss (24) and the connecting cap (2) are integrally formed.

9. The composite bimetal brake disc of claim 1, wherein: The closed end (22) of the connecting cap (2) is provided with a positioning hole (26).

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