Segmented aluminum brake disc

Abstract

The utility model relates to the technical field of light brake discs for vehicles, in particular to a segment type aluminum brake disc which comprises segments with pins and an aluminum alloy disc body. Each section with the pins comprises a top position and a bottom position, the top position is in a fan shape and comprises a friction face, the friction faces of the top positions of the sections with the pins are spliced to form an annular brake disc annular friction face, the bottom position is in a pin shape, and the sections with the pins are embedded and fixed to the aluminum alloy disc body. The utility model has the benefits that the friction stability is improved by the whole circle of annular friction surface assembled by the pin joint blocks; the pins with the pin joint blocks are firmly connected with the pin holes of the aluminum alloy disc body, so that the brake safety is improved, the manufacturing process is simple and practical, the cost is low, the brake disc is suitable for mass production, and the light weight of the brake disc for the vehicle is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of lightweight brake discs for vehicles, in particular to a segmented aluminum brake disc. Background Art

[0002] Replacing iron with aluminum is an important trend in the lightweight development of various types of vehicles. The purpose is to reduce fuel consumption (power), extend mileage, reduce carbon dioxide emissions, and protect the earth's environment.

[0003] Currently, most vehicles use cast iron brake discs. Due to the poor high temperature resistance of aluminum materials, they cannot be simply replaced by aluminum alloys. Therefore, research focuses on ceramic particle reinforced aluminum-based composite materials to replace cast iron materials, bringing hope for replacing iron with aluminum.

[0004] However, ceramic particle reinforced aluminum matrix composites have many technical problems that need to be solved, such as excessive brittleness, difficulty in subsequent processing, high cost, and difficulty in friction pairing. Ceramic particle reinforced aluminum matrix composites cannot simply replace cast iron.

[0005] Therefore, the aluminum brake discs of the prior art are only used in vehicles with small loads or low speeds, and their practical application and promotion are greatly restricted.

[0006] In view of the above problems, we propose a segmented aluminum brake disc. Utility Model Content

[0007] The utility model aims to provide a segmented aluminum brake disc to solve the problems raised in the above background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A segmented aluminum brake disc, comprising a segmented block with a pin and an aluminum alloy disc body;

[0010] The pin-jointed block includes a top portion and a bottom portion, the top portion is fan-shaped and includes a friction surface, the friction surfaces of the top portions of the pin-jointed blocks are spliced ​​to form an annular friction surface of the brake disc in an annular shape, and the bottom portion is pin-shaped, which plays the role of embedding and fixing the pin-jointed block to the aluminum alloy disc body;

[0011] The aluminum alloy disc body includes a ring portion and a cap portion. There are multiple pin holes on the ring portion of the aluminum alloy disc body. The pin holes of the aluminum alloy disc body correspond one-to-one to the bottom pins of the pin segment block, and the two have the same shape. The pin segment block is connected to the aluminum alloy disc body by inlaying or welding.

[0012] Preferably, the top portion of the pin joint block is made of metallic friction material.

[0013] Preferably, the top material of the pin-jointed block is the same as the bottom material.

[0014] Preferably, the material of the aluminum alloy disc body is selected from either cast aluminum alloy or forged aluminum alloy.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The full-circle annular friction surface assembled by the pin segments provided in the utility model improves the friction stability.

[0017] The firm connection between the pin with the pin section block and the pin hole of the aluminum alloy disc body improves braking safety, the manufacturing process is simple and practical, the cost is low, it is suitable for mass production, and the vehicle brake disc is lightweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 , a perspective view of a pin joint block of the first embodiment of the utility model, wherein the friction surface of the pin joint block faces upward, wherein, for the sake of clarity, the friction surface at the top of the pin joint block is represented by a pitted surface (the same below);

[0019] Figure 2 , a perspective view of a pin-jointed block, wherein the bottom position (pin) of the pin-jointed block is facing upward;

[0020] Figure 3 , the partial cutaway perspective view shows Figure 1 and 2 The pin-bearing segment block shown in the figure has two segments with their bottoms facing downward and upward respectively. The bottom of the segment block (pin) is fixed with the pin hole of the same shape on the annular part of the aluminum alloy disc body by embedding and welding in the direction indicated by the arrow.

[0021] Figure 4 , partial cutaway perspective view shows the Figure 3 After the pin segment is spliced, the friction surface at the top of the pin segment is spliced ​​into the front and rear friction surfaces of the entire brake disc, and the pin at the bottom is fixed to the pin hole in the annular part of the disc body, forming a reliable connection;

[0022] Figure 5 , a perspective view of a second embodiment of the utility model with a pin joint block, wherein the bottom position (pin) of the pin joint block is upward;

[0023] Figure 6 , a perspective view of a block with a pin according to a third embodiment of the utility model, wherein the bottom portion (pin) of the block with a pin is facing upward;

[0024] Figure 7 , a perspective view of a fourth embodiment of the utility model with a pin joint block, wherein the bottom position (pin) of the pin joint block is upward;

[0025] Figure 8 , a perspective view of a fifth embodiment of the utility model with a pin joint block, wherein the bottom position (pin) of the pin joint block is upward.

[0026] In the figure:

[0027] 1-block with pin; 2-top position; 3-bottom position; 4-friction surface; 4'-annular friction surface of brake disc; 5-aluminum alloy disc body; 6-ring position; 7-cap position; 8-pin hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1-8 As shown, the utility model relates to a segmented aluminum brake disc, which comprises a segmented block 1 with a pin and a disc body 5.

[0030] Figure 1 A perspective view of a pin joint block 1 of the first embodiment of the utility model is provided, wherein the friction surface of the top position 2 of the pin joint block 1 faces upward, wherein, for the sake of clarity, the friction surface 4 of the top position 2 of the pin joint block 1 is represented by a pitted surface (the same below); Figure 2 for Figure 1 A perspective view of the same pin segment 1 is shown, wherein the bottom position (pin) 3 of the pin segment 2 is facing upward; wherein the top position of the segment 1 and the friction surface 4 are fan-shaped, and the bottom position (pin) 3 of the segment 1 has 9 cylindrical pins, which are evenly arranged in a fan shape.

[0031] The top position 2 of the pin joint block 1 is made of metallic friction material, including: ceramic particle reinforced aluminum-based composite materials, high-temperature resistant aluminum alloys with high alloying element content, copper and copper alloys, cobalt and cobalt alloys, iron and iron alloys, nickel and nickel alloys, titanium and titanium alloys. Since the friction surface 4 of the top position 2 is the highest temperature area during braking, the material must have high-temperature strength, high-temperature hardness and reliable friction performance.

[0032] The bottom position (pin) 3 is made of metal, including: copper and copper alloys, cobalt and cobalt alloys, iron and iron alloys, nickel and nickel alloys. The bottom position 3 is a sub-high temperature area during braking, so the material must have high temperature strength performance.

[0033] Figure 3 A partial cutaway perspective view shows Figure 1 and2 The pin-bearing segment block 1 shown in the figure has two segments 1 with their bottoms 3 facing downward and upward respectively, and the bottoms (pins) 3 of the segments 1 are fixed by embedding and welding with the pin holes 8 of the same shape on the annular part 6 of the aluminum alloy plate 5 in the direction indicated by the arrows;

[0034] Figure 4 The partial cutaway perspective view shows the Figure 3 After the multiple pin segments 1 are inlaid and fixed, the friction surface 4 of the top position 2 of the pin segment 1 is spliced ​​into the front and rear friction surfaces of the entire continuous ring of the brake disc, and the bottom position (pin) 3 is fixed to the pin hole 8 of the annular part 6 of the disc body 5 to form a reliable connection.

[0035] The aluminum alloy disc body 5 includes a ring portion 6 and a cap portion 7. The ring portion 6 has a plurality of pin holes 8 for fixing the pin block 1. The cap portion 7 has a hole for connecting with the axle (not shown). The aluminum alloy disc 5 is made of cast aluminum alloy and forged aluminum alloy. The disc body 5 is preferably made of a high temperature resistant type because the heating temperature of the disc body 5 is lower than the temperature of the pin block 1 during braking. In this case, the disc body 5 advantageously provides the reasonable strength required by the brake disc during braking, improves the safe operation of the brake disc, and is suitable for most existing vehicle models, thereby achieving the ultimate goal of lightweighting the vehicle by replacing iron with aluminum.

[0036] Other benefits include: the full-circle annular friction surface 4' assembled with the pin segment 1 improves friction stability; the manufacturing process is simple and practical, the cost is low, and it is suitable for mass production.

[0037] Figure 5 It is a perspective view of a pin segment 1 of the second embodiment of the utility model, wherein the bottom position (pin) 3 of the pin segment 1 is upward. The pins 3 of this embodiment have three pins, which are linear cylinders and are radially arranged from the inside to the outside according to the ring shape of the friction ring.

[0038] Figure 6 It is a perspective view of a pin joint block 1 according to the third embodiment of the utility model, wherein the bottom position (pin) 3 of the pin joint block 1 is upward, and the pins 3 of this embodiment have three pins, which are curved cylinders and are arranged in a rotation direction from the inside to the outside of the annular friction ring.

[0039] Figure 7 It is a perspective view of the fourth embodiment of the utility model with a pin block 1, wherein the bottom position (pin) 3 of the pin block 1 is upward; the pin 3 of this embodiment has only one pin, and the pin is a V-shaped column. Although it is shown as a V-shape in this embodiment, it can be any letter or other simple shape and symbol, provided that it meets the reliability of the connection between the block 1 and the disk body 5, and the convenience and low cost of processing.

[0040] Figure 8This is a perspective view of the fifth embodiment of the utility model with a pin segment 1, wherein the bottom position (pin) 3 of the pin segment 1 is facing upward, and the top position 2 of this embodiment is a quadrilateral with four curved sides, and 12 such quadrilaterals are spliced ​​into a full circle of continuous annular friction surface 4'. Therefore, it can be considered that the shape of the top position 2 can be any geometric shape, as long as it can be spliced ​​into a full circle of continuous annular friction surface required by the brake disc. The pins 3 of this embodiment have five pins, and the pins 3 include a combination of cylindrical pins and linear cylindrical pins of different lengths, which are arranged obliquely according to the friction annular surface 4'. Therefore, it can be considered that the pins 3 of the pin segment 1 can be any combination and any arrangement of the various forms of pins 3 of all the above-mentioned embodiments, provided that the reliability of the connection between the segment 1 and the disc body 5, the convenience of processing and the low cost are met.

[0041] In this specification, although a solid brake disc is shown, it can also be applied to a duct type brake disc.

[0042] Although the utility model shows the application of a disc brake disc, the same principle can also be applied to a brake drum or other mechanical brake devices.

Claims

1. A segmented aluminum brake disc, characterized in that: It comprises a pin-jointed block (1) and an aluminum alloy disc body (5); The pin-jointed block (1) comprises a top portion (2) and a bottom portion (3); the top portion (2) is fan-shaped and comprises a friction surface (4); the friction surfaces (4) of the top portions (2) of the plurality of pin-jointed blocks (1) are spliced ​​to form a circular friction surface (4') of a brake disc; the bottom portion (3) is pin-shaped and serves to embed and fix the pin-jointed block (1) in an aluminum alloy disc body (5); The aluminum alloy disc body (5) comprises a ring portion (6) and a cap portion (7), and a plurality of pin holes (8) are provided on the ring portion (6) of the aluminum alloy disc body (5). The pin holes (8) of the aluminum alloy disc body (5) correspond one-to-one to the pins at the bottom portion (3) of the pin-bearing segment (1), and the two have the same shape. The pin-bearing segment (1) is connected to the aluminum alloy disc body (5) by inlaying or welding.

2. A segmented aluminum brake disc according to claim 1, characterized in that: The top portion (2) of the pin-jointed block (1) is made of metallic friction material.

3. A segmented aluminum brake disc as claimed in claim 2, characterized in that: The material of the top part (2) and the material of the bottom part (3) of the pin-jointed block (1) are the same.

4. A segmented aluminum brake disc as claimed in claim 1, characterized in that: The material of the aluminum alloy disc (5) is selected from any one of cast aluminum alloy and forged aluminum alloy.

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