Light-weight electric vehicle brake disc

Abstract

The utility model discloses a lightweight electromobile brake disc, relates to brake technical field, including brake disc body and liquid storage ring, the brake disc body inside is provided with the cooling subassembly, and the cooling subassembly includes liquid storage chamber, fixed transverse plate, piston rod, piston, movable transverse plate, return spring, thermal expansion block, runner, hose and counterweight ball, and a fixed transverse plate is connected between the two sides of the interior of the liquid storage cavity, a piston rod is arranged in a hole of the fixed transverse plate in a penetrating mode, a piston is arranged at the bottom of the piston rod, a movable transverse plate is fixed to the outer portion of the piston rod, and the piston rod is further sleeved with a reset spring. According to the light-weight electric vehicle brake disc, the special-shaped holes are annularly and equidistantly formed along the surface of the brake disc body, the ventilation area of the brake disc body can be increased, the heat dissipation surface is wider, and meanwhile, the special-shaped holes and the arc-shaped notches play roles in reducing the material use amount of the brake disc body and reducing the weight of the brake disc body structurally.

Description

Technical Field

[0001] The utility model relates to the technical field of brakes, in particular to a lightweight brake disc for an electric vehicle. Background Art

[0002] The brake disc is a metal disc made of alloy steel and fixed on the wheel. It rotates with the wheel. Brake discs are mostly used in electric vehicles. Holding the brake blade with your hand can trigger the brake pads to tighten inwards. When the brake disc is clamped, the tire will stop.

[0003] However, the heat generated by friction continues to accumulate in the brake disc, causing the friction coefficient of the friction material to decrease and the braking efficiency of the brake to decline.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a lightweight electric vehicle brake disc is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a lightweight electric vehicle brake disc to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lightweight electric vehicle brake disc, comprising a brake disc body and a liquid storage ring, a cooling component is arranged inside the brake disc body, and the cooling component comprises a liquid storage chamber, a fixed cross plate, a piston rod, a piston, a movable cross plate, a return spring, a heat expansion block, a flow channel, a hose and a counterweight ball, a fixed cross plate is connected between the two sides of the interior of the liquid storage chamber, and a piston rod is passed through the hole of the fixed cross plate, a piston is arranged at the bottom of the piston rod, and a movable cross plate is fixed to the outside of the piston rod, a return spring is also sleeved on the outside of the piston rod, a heat expansion block is arranged on the top of the movable cross plate, and a flow channel is connected to the opening of the liquid storage chamber, a hose is connected to the other end of the flow channel, and a counterweight ball is installed at the end of the hose, and the liquid storage ring is buried in the brake disc body.

[0007] Furthermore, a mounting ring is arranged at the center of the brake disc body, and a mounting hole is opened on the surface of the mounting ring.

[0008] Furthermore, the surface of the brake disc body is provided with special-shaped holes, and three special-shaped holes are provided.

[0009] Furthermore, an arc-shaped notch is provided on the outer circumference of the brake disc body, and the ratio of the number of the special-shaped holes to the arc-shaped notch is 1:2.

[0010] Furthermore, two piston rods are symmetrically arranged about the vertical center axis of the piston, and the piston rods pass through the top of the liquid storage cavity.

[0011] Furthermore, the fixed transverse plate and the movable transverse plate are parallel to each other, and the movable transverse plate is elastically connected to the liquid storage chamber via a return spring.

[0012] Furthermore, the weighted ball is of a hollow structure, and the hose is connected to the liquid storage ring through the weighted ball.

[0013] The utility model provides a lightweight electric vehicle brake disc, which has the following beneficial effects:

[0014] 1. When the utility model is braked, the brake disc body will generate heat due to friction with the brake pad, causing the heat expansion block there to expand. At this time, the heat expansion block overcomes the elastic force of the reset spring and pushes the movable horizontal plate to move away from the fixed horizontal plate, driving the piston to rise and generate negative pressure inside the liquid storage cavity. The refrigerant inside the liquid storage ring is introduced into the liquid storage cavity through the counterweight ball, the hose, and the flow channel, so as to accurately cool the heated part of the brake disc body to avoid brake failure caused by excessive temperature.

[0015] 2. The special-shaped holes of the utility model are arranged in a circular shape with equal distances along the surface of the brake disc body, which helps to increase the ventilation area of ​​the brake disc body and make the heat dissipation surface wider. At the same time, the special-shaped holes and arc-shaped notches structurally reduce the material usage of the brake disc body and reduce its own weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a lightweight electric vehicle brake disc of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of a brake disc body of a lightweight electric vehicle brake disc of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the expansion structure of a heat expansion block of a lightweight electric vehicle brake disc.

[0019] In the figure: 1. brake disc body; 2. mounting ring; 3. mounting hole; 4. special-shaped hole; 5. arc-shaped notch; 6. liquid storage ring; 7. cooling component; 701. liquid storage chamber; 702. fixed cross plate; 703. piston rod; 704. piston; 705. movable cross plate; 706. return spring; 707. thermal expansion block; 708. flow channel; 709. hose; 710. counterweight ball. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figures 1 to 3As shown, a lightweight electric vehicle brake disc comprises a brake disc body 1 and a liquid storage ring 6, a cooling component 7 is arranged inside the brake disc body 1, and the cooling component 7 comprises a liquid storage chamber 701, a fixed transverse plate 702, a piston rod 703, a piston 704, a movable transverse plate 705, a return spring 706, a thermal expansion block 707, a flow channel 708, a hose 709 and a weighted ball 710, a fixed transverse plate 702 is connected between the inner sides of the liquid storage chamber 701, and a piston rod 703 is inserted into the hole of the fixed transverse plate 702, a piston 704 is arranged at the bottom of the piston rod 703, and a movable transverse plate 705 is fixed to the outside of the piston rod 703, and a return spring 706 is also sleeved on the outside of the piston rod 703. 06, a heat expansion block 707 is arranged on the top of the movable cross plate 705, and a flow channel 708 is connected to the opening of the liquid storage chamber 701, the other end of the flow channel 708 is connected to a hose 709, and a counterweight ball 710 is installed at the end of the hose 709, the liquid storage ring 6 is buried in the interior of the brake disc body 1, two piston rods 703 are symmetrically arranged about the vertical center axis of the piston 704, and the piston rods 703 pass through the top of the liquid storage chamber 701, the fixed cross plate 702 and the movable cross plate 705 are parallel to each other, and the movable cross plate 705 is elastically connected to the liquid storage chamber 701 through a reset spring 706, the counterweight ball 710 is a hollow structure, and the hose 709 is connected to the liquid storage ring 6 through the counterweight ball 710.

[0022] The specific operation is as follows. When the brakes are applied, the brake disc body 1 will generate heat due to friction with the brake pad, causing the heat expansion block 707 thereto to expand. At this time, the heat expansion block 707 overcomes the elastic force of the return spring 706 and pushes the movable horizontal plate 705 to move away from the fixed horizontal plate 702, driving the piston 704 to rise and generate negative pressure inside the liquid storage chamber 701. The refrigerant inside the liquid storage ring 6 is transported through the counterweight ball 710, the hose 709, and the flow channel 708 into the liquid storage chamber 701, so as to accurately cool the heated part of the brake disc body 1 to avoid brake failure caused by excessive temperature.

[0023] like Figure 1 As shown, a mounting ring 2 is provided at the center of the brake disc body 1, and a mounting hole 3 is provided on the surface of the mounting ring 2, a special-shaped hole 4 is provided on the surface of the brake disc body 1, and three special-shaped holes 4 are provided, an arc-shaped notch 5 is provided on the periphery of the brake disc body 1, and the ratio of the number of special-shaped holes 4 to the arc-shaped notches 5 is 1:2.

[0024] The specific operation is as follows: the special-shaped holes 4 are arranged in a circular shape with equal distances along the surface of the brake disc body 1, which helps to increase the ventilation area of ​​the brake disc body 1 and make the heat dissipation surface wider. At the same time, the special-shaped holes 4 and the arc-shaped notches 5 structurally reduce the material usage of the brake disc body 1 and reduce its own weight.

[0025] In summary, when the lightweight electric vehicle brake disc is used, the mounting holes 3, the special-shaped holes 4, the arc-shaped notches 5, and the cooling assembly 7 are evenly distributed around the circumference. After the brake disc body 1 is mounted on the wheel, the thermal expansion block 707 has the characteristic of thermal expansion. When the brake disc body 1 and the brake pad generate heat due to friction during the braking operation, the thermal expansion block 707 absorbs heat and expands.

[0026] As the volume of the thermal expansion block 707 increases, it will help the movable horizontal plate 705 to overcome the elastic force of the return spring 706 and drive the piston rod 703 to move away from the fixed horizontal plate 702, so that the piston 704 rises to generate negative pressure inside the liquid storage chamber 701. Due to the deadweight of the weighted ball 710, the hose 709 is expanded along the inside of the liquid storage ring 6, so that all the refrigerant can be smoothly introduced from the flow channel 708 into the liquid storage chamber 701, so as to achieve accurate cooling of the heat-generating part of the brake disc body 1 and avoid brake failure caused by excessive temperature.

[0027] In addition, the special-shaped holes 4 increase the ventilation area of ​​the brake disc body 1, making the heat dissipation surface wider, and part of the heat generated by friction can be taken away by the wind. At the same time, the special-shaped holes 4 and the arc-shaped notches 5 structurally reduce the material usage of the brake disc body 1, reduce its own weight and reduce production costs.

[0028] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A lightweight electric vehicle brake disc, comprising a brake disc body (1) and a liquid storage ring (6), characterized in that: The brake disc body (1) is provided with a cooling component (7) inside, and the cooling component (7) includes a liquid storage chamber (701), a fixed transverse plate (702), a piston rod (703), a piston (704), a movable transverse plate (705), a return spring (706), a heat expansion block (707), a flow channel (708), a hose (709) and a weighted ball (710), the liquid storage chamber (701) is connected between two sides inside, and a piston rod (703) is inserted into a hole of the fixed transverse plate (702), and the piston rod (703) is inserted into a hole of the fixed transverse plate (702), and the piston rod (70 3), a piston (704) is arranged at the bottom, and a movable horizontal plate (705) is fixed to the outside of the piston rod (703), and a return spring (706) is also sleeved on the outside of the piston rod (703), a heat expansion block (707) is arranged on the top of the movable horizontal plate (705), and a flow channel (708) is connected to the opening of the liquid storage chamber (701), and the other end of the flow channel (708) is connected to a hose (709), and a counterweight ball (710) is installed at the end of the hose (709), and the liquid storage ring (6) is buried inside the brake disc body (1).

2. A lightweight electric vehicle brake disc according to claim 1, characterized in that: A mounting ring (2) is arranged at the center of the brake disc body (1), and a mounting hole (3) is opened on the surface of the mounting ring (2).

3. The lightweight electric vehicle brake disc according to claim 1, characterized in that: The surface of the brake disc body (1) is provided with special-shaped holes (4), and three special-shaped holes (4) are provided.

4. A lightweight electric vehicle brake disc according to claim 3, characterized in that: The outer circumference of the brake disc body (1) is provided with an arc-shaped notch (5), and the ratio of the number of the special-shaped holes (4) to the arc-shaped notch (5) is 1:

2.

5. The lightweight electric vehicle brake disc according to claim 1, characterized in that: Two piston rods (703) are symmetrically arranged about the vertical center axis of the piston (704), and the piston rods (703) pass through the top of the liquid storage chamber (701).

6. The lightweight electric vehicle brake disc according to claim 1, characterized in that: The fixed transverse plate (702) and the movable transverse plate (705) are parallel to each other, and the movable transverse plate (705) is elastically connected to the liquid storage chamber (701) via a return spring (706).

7. The lightweight electric vehicle brake disc according to claim 1, characterized in that: The counterweight ball (710) is of a hollow structure, and the hose (709) is connected to the liquid storage ring (6) via the counterweight ball (710).

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