Automobile brake disc assembly

Abstract

The utility model relates to the technical field of automobile brake discs, and provides an automobile brake disc assembly which comprises a friction disc, a joint, a plurality of torque transmission pins and a plurality of bolts, a heat insulation gasket is arranged between the friction disc and the joint, and the torque transmission pins are sequentially connected with the joint, the heat insulation gasket and the friction disc in an inserted mode. A pressing cap of the torque transmission pin abuts against the surface of the combining head, the bolt penetrates through the torque transmission pin, a nut of the bolt abuts against the end face of the pressing cap of the torque transmission pin, and a nut of the bolt abuts against the surface of the friction disc. The heat insulation gasket is arranged between the friction disc and the joint, so that heat directly conducted to the joint is effectively reduced, and a certain protection effect on the joint is achieved.

Description

Technical Field

[0001] This application belongs to the field of automotive brake disc technology, and more specifically, relates to an automotive brake disc assembly. Background Technology

[0002] Carbon-ceramic brake systems are commonly used in motor vehicles for braking. They generally consist of a carbon-ceramic brake disc assembly and a brake caliper that connects to it. The carbon-ceramic brake disc assembly typically comprises a carbon-ceramic friction disc, a coupling, fasteners, and other parts. The braking force of the brake system originates from the brake caliper. The brake caliper contains a brake piston pump, and its outer side is a caliper-type structure. The outer brake pad (also called a friction pad) is fixed to the outside of the caliper. The internal piston pushes the inner brake pad, and simultaneously, through a reaction force, pulls the caliper, causing the outer brake pad to move inward. Both press against the brake disc, and the braking force is generated through the friction between the brake disc and the inner and outer brake pads.

[0003] Existing brake disc assemblies use bolts to connect the friction disc and the brake pads. Because braking friction generates a large amount of heat, this heat is transferred to the brake pads via heat conduction. This heat reduces the mechanical properties of the brake pads, increasing the risk of deformation or damage. Furthermore, under prolonged high-temperature operation, the bolts expand due to heat, reducing their axial pressure. This leads to a decrease in friction between the brake pads and the friction disc. When the friction is less than the braking force, it can cause vibration during brake disc braking. Utility Model Content

[0004] In order to solve the technical problem that heat conduction to the brake disc causes a reduction in brake disc performance in the prior art, the purpose of this application is to provide an automotive brake disc assembly that effectively reduces direct heat conduction by setting a heat insulation pad to separate the brake disc and friction disc, thus providing a certain degree of protection for the brake disc.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: An automotive brake disc assembly is provided, comprising: a friction disc, a coupling, multiple torque transmission pins, and multiple bolts. A heat insulation gasket is provided between the friction disc and the coupling. The torque transmission pins are sequentially inserted into the coupling, the heat insulation gasket, and the friction disc. The cap of the torque transmission pin abuts against the surface of the coupling. The bolts pass through the torque transmission pins, the nuts of the bolts abut against the cap end face of the torque transmission pins, and the nuts of the bolts abut against the surface of the friction disc.

[0006] In one embodiment, the surface of the heat-insulating pad that contacts the fitting and the friction disc is provided with several equally spaced grooves.

[0007] In one embodiment, the heat insulation pad is a rectangular pad.

[0008] In one embodiment, the heat insulation pad has a rectangular hole, and the transmission pin has a rectangular segment that matches the rectangular hole.

[0009] In one embodiment, the through hole on the friction disc is configured as a countersunk hole, and the larger diameter end of the countersunk hole is located away from the mating head. A pressure spring is provided inside the larger diameter end of the countersunk hole, one end of which abuts against the nut, and the other end abuts against the bottom surface of the larger diameter end of the countersunk hole.

[0010] In one embodiment, a flat washer is provided on the bolt shank, the flat washer being located between the nut and the friction disc, and the pressure spring abutting against the flat washer.

[0011] The beneficial effects of the automotive brake disc assembly provided in this application are as follows:

[0012] 1. By placing a heat insulation gasket between the friction disc and the joint, the direct conduction of heat is effectively reduced, which provides a certain degree of protection for the joint.

[0013] 2. By setting a pressure spring, when working in a high-temperature environment, the pressure spring can absorb the gap caused by the bolt's expansion due to heat, thereby ensuring the axial clamping force of the bolt on the friction disc and the head, and can also effectively resist the vibration load generated during braking. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the planar structure of an automotive brake disc assembly provided in an embodiment of this application;

[0016] Figure 2 for Figure 1 Sectional view at point AA;

[0017] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0018] Figure 4 This is a schematic diagram of the structure of the heat insulation pad in the automotive brake disc assembly provided in the embodiments of this application;

[0019] Figure 5 This is a three-dimensional structural diagram of the torque transmission pin in the automotive brake disc assembly provided in an embodiment of this application.

[0020] The following are the labeling elements in the figure:

[0021] 1. Friction disc; 11. Countersunk hole; 2. Connector; 3. Torque pin; 31. Pressure cap; 32. Rectangular segment; 4. Bolt; 41. Screw; 42. Nut; 43. Nut; 44. Flat washer; 5. Heat insulation gasket; 51. Groove; 52. Rectangular hole; 6. Pressure spring. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] like Figures 1-5As shown, an automotive brake disc assembly provided in this application embodiment will now be described. This automotive brake disc assembly includes: a friction disc 1, a coupling 2, a torque transmission pin 3, bolts 4, and washers. The friction disc 1 and the coupling 2 are connected by a plurality of bolts 4 spaced in a circle. The number of bolts 4, torque transmission pins 3, and heat insulation washers 5 are equal, and multiple bolts 44 are provided. Each bolt 4 includes a threaded rod 41, one end of which is provided with a nut 42. A nut 43 is screwed onto the threaded rod 41, and a flat washer 44 is fitted onto it. Specifically, the heat insulation gasket 5 is placed between the friction disc 1 and the mating head 2, so that the friction disc 1 and the mating head 2 are spaced apart. The torque transmission pin 3 is sequentially inserted into the mating head 2, the heat insulation gasket 5, and the friction disc 1. The pressure cap 31 of the torque transmission pin 3 abuts against the surface of the mating head 2. The bolt 4 passes through the torque transmission pin 3, the nut 42 of the bolt 4 abuts against the end face of the pressure cap 31 of the torque transmission pin 3, and the nut 43 of the bolt 4 abuts against the surface of the friction disc 1, thereby clamping the heat insulation gasket 5 between the friction disc 1 and the mating head 2. By placing the heat insulation gasket 5 between the friction disc 1 and the mating head 2, the heat generated by friction is effectively reduced from being directly conducted to the mating head 2, providing a certain degree of protection for the mating head 2.

[0027] like Figure 4 As shown, to increase the friction between the heat insulation pad 5 and the friction disc 1 and the mating head 2, the heat insulation pad 5 has several equally spaced strip-shaped grooves 51 on the surfaces that contact the mating head 2 and the friction disc 1. The grooves 51 are designed to form anti-slip teeth on the surface of the heat insulation pad 5. The heat insulation pad 5 is made of a high-temperature resistant material, such as high-strength titanium alloy (Ti-6Al-4V). Titanium alloy has excellent high-temperature stability, low thermal conductivity, and outstanding strength, which can minimize heat transfer while ensuring structural strength.

[0028] like Figure 4 and Figure 5 As shown, in this embodiment, the heat insulation gasket 5 is a rectangular gasket. The heat insulation gasket 5 has a rectangular hole 52, and the transmission pin 3 has a rectangular segment 32 that matches the rectangular hole 52. Of course, the transmission pin 3 and the coupling 2 are also matched through the rectangular hole 52 and the rectangular segment 32.

[0029] To address the adverse effects of bolt 4 elongating under prolonged high temperatures, in this embodiment, the through hole on the friction disc 1 is configured as a countersunk hole 11, with the larger diameter end of the countersunk hole 11 positioned away from the head 2. A pressure spring 6 is installed inside the larger diameter end of the countersunk hole 11. One end of the pressure spring 6 abuts against a flat washer 44 fitted on the screw 41, and the other end abuts against the bottom surface of the larger diameter end of the countersunk hole 11. The flat washer 44 is located between the nut 43 and the friction disc 1, and the pressure spring 6 abuts against the flat washer 44. Under high-temperature operating conditions, the pressure spring 6 can absorb the gap caused by the bolt 4's thermal expansion and elongation, thereby ensuring the axial clamping force of the bolt 4 on the friction disc 1 and the head 2, and effectively resisting the vibration load generated during braking.

[0030] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automotive brake disc assembly comprising: A friction disc (1), a head (2), multiple torque pins (3) and multiple bolts (4) are characterized in that: a heat insulation gasket (5) is provided between the friction disc (1) and the head (2); the torque pins (3) are sequentially inserted into the head (2), the heat insulation gasket (5) and the friction disc (1); the cap (31) of the torque pin (3) abuts against the surface of the head (2); the bolts (4) pass through the torque pins (3); the nuts (42) of the bolts (4) abut against the end face of the cap (31) of the torque pins (3); and the nuts (43) of the bolts (4) abut against the surface of the friction disc (1).

2. The automotive brake disc assembly of claim 1, wherein: The heat insulation pad (5) has several grooves (51) that are equidistantly arranged on the surface of the pad that comes into contact with the head (2) and the friction disc (1).

3. The automotive brake disc assembly of claim 2, wherein: The heat insulation pad (5) is a rectangular pad.

4. The automotive brake disc assembly of claim 3, wherein: The heat insulation pad (5) is provided with a rectangular hole (52), and the transmission pin (3) is provided with a rectangular segment (32) that matches the rectangular hole (52).

5. The automotive brake disc assembly of any one of claims 1-4, wherein: The through hole on the friction disc (1) is set as a countersunk hole (11), and the larger diameter end of the countersunk hole (11) is set away from the head (2). A pressure spring (6) is provided in the larger diameter end of the countersunk hole (11). One end of the pressure spring (6) abuts against the nut (43), and the other end abuts against the bottom surface of the larger diameter end of the countersunk hole (11).

6. The automotive brake disc assembly of claim 5, wherein: A flat washer (44) is provided on the screw (41) of the bolt (4). The flat washer (44) is located between the nut (43) and the friction disc (1). The pressure spring (6) abuts against the flat washer (44).

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