Wear-resistant and high-temperature-resistant electric vehicle disc brake mechanism

Abstract

The utility model relates to an abrasion-resistant and high-temperature-resistant electric vehicle disc brake mechanism which comprises a brake disc, a heat dissipation groove of an annular structure is formed in the peripheral side of the brake disc, a plurality of partition plates are fixedly connected in the heat dissipation groove, and the partition plates are distributed around the inner wall of the heat dissipation groove at equal intervals. Air cavities are formed between every two adjacent partition plates and the side walls of the heat dissipation grooves, through holes are formed in the portions, on the two sides of the air cavities, of the side walls of the heat dissipation grooves, when a wheel rotates, air can enter the air cavities and is discharged through the through holes to dissipate heat of a brake disc, and after the through holes rotate into a brake caliper, the air discharged through the through holes can blow a brake friction plate to dissipate heat of the brake disc. And after the through holes rotate to be aligned with the air inlet holes, air exhausted by the through holes can enter the heat dissipation holes through the air inlet holes, heat dissipation is conducted on the back face of the brake friction plate and the interior of the brake pad, and the high-temperature-resistant performance of the brake friction plate is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to brake device technical field, concretely relates to a kind of wear-resistant high-temperature-resistant electric vehicle disc brake mechanism. BACKGROUND

[0002] Disc brake refers to the brake system using metal disc instead of drum, disc brake has a flat brake shoe on both sides of brake disc (brake disc), when the oil pressure of brake master cylinder is sent to branch cylinder, brake shoe clamps brake disc, to achieve the effect of brake, disc brake is generally used for front wheel, its advantage is sensitive, no adjustment brake clearance, easy to maintain.

[0003] To avoid brake disc and brake pad between brake friction piece mutual friction temperature excessively high during braking, generally, air can enter into vent hole when brake disc rotates, and heat dissipation is carried out to brake disc, however, brake friction piece also generates high temperature when it is rubbed with brake disc, the existing disc brake mechanism generally does not have the function of heat dissipation to brake friction piece, so that brake friction piece generates high temperature due to long time rubbing when braking in long downhill section, which affects the service life of brake friction piece. UTILITARIAN CONTENT

[0004] The utility model discloses a kind of wear-resistant high-temperature-resistant electric vehicle disc brake mechanism with simple structure and reasonable design, to solve the above-mentioned problems.

[0005] The utility model discloses the above-mentioned purposes are realized by the following technical solutions:

[0006] A kind of wear-resistant high-temperature-resistant electric vehicle disc brake mechanism, including brake disc, the brake disc circumferential side is equipped with the heat dissipation groove of annular structure, the heat dissipation groove is fixedly connected with multiple partitions, multiple the partitions are equidistantly distributed around the heat dissipation groove inner wall, adjacent two the partitions and the heat dissipation groove side wall form air cavity between, the heat dissipation groove side wall on the two sides of air cavity is equipped with through hole;

[0007] The brake caliper with open end is mounted on the brake disc, brake pad is slidably installed on the inner wall of brake caliper, heat dissipation hole is formed in brake pad along the length direction of brake pad and penetrates brake pad, brake friction piece is fixedly installed on the side of brake pad away from brake caliper, multiple air inlet holes are formed in brake friction piece and communicated with the inside of heat dissipation hole, and the through hole formed in the heat dissipation groove side wall can be aligned with the air inlet hole when rotating to the inside of brake caliper.

[0008] As a further optimization scheme of the utility model, one side of the brake disc is fixedly installed with wheel flange, and multiple wheel hub bolts are connected to the wheel flange in annular distribution.

[0009] As a further optimization scheme of the utility model, the through hole penetrates the heat dissipation groove side wall, and the through hole is located at the gradually reduced inner cavity width from one end in the heat dissipation groove to the other end.

[0010] As a further optimization scheme of the utility model, the brake caliper is arc-shaped structure, and a gap is left between the brake caliper inner wall and the brake disc, and an observation window is further arranged in the middle section of the brake caliper.

[0011] As a further optimization scheme of the utility model, the rib plate is embedded in the heat dissipation hole, and the rib plate is fixedly connected with the inner walls of the front and rear sides of the heat dissipation hole.

[0012] As a further optimization scheme of the utility model, the brake piston housing with a piston is fixedly installed on the side of the brake caliper away from the wheel flange, and a brake fluid hose in communication with the inside of the brake piston housing is further installed on the brake piston housing.

[0013] The utility model discloses the beneficial effect lies in: when the wheel rotates, air can enter the air chamber inside, and the air is discharged through the through hole, and the air discharged through the through hole can blow the brake friction piece when the through hole rotates to the brake caliper, and the air discharged through the through hole can enter the heat dissipation hole through the air inlet hole when the through hole rotates to the air inlet hole, and the air discharged through the through hole can be cooled to the brake friction piece back and brake pad inside, and the high-temperature resistance of brake friction piece is greatly improved. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model;

[0015] Figure 2 It is the three-dimensional structure schematic diagram of the brake disc of the utility model;

[0016] Figure 3 It is the internal structure schematic diagram of the brake caliper of the utility model;

[0017] Figure 4 It is the utility model Figure 3 A local detail enlarged view in the utility model;

[0018] Figure 5 It is the sectional structure schematic diagram of the utility model Figure 3 .

[0019] In the drawing: 1, brake disc;2, wheel flange;3, wheel hub bolt;4, heat dissipation groove;5, partition;6, through hole;7, brake caliper;8, observation window;9, brake pad;10, heat dissipation hole;11, rib plate;12, brake friction piece;13, air inlet hole;14, brake piston housing;15, brake fluid hose. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example

[0022] like Figure 1 - Figure 5 As shown, a wear-resistant and high-temperature resistant electric vehicle disc brake mechanism includes a brake disc 1, a wheel flange 2 fixedly installed on one side of the brake disc 1, and a plurality of wheel hub bolts 3 arranged in a ring connected to the wheel flange 2. In use, the user can put the electric vehicle wheel hub on the wheel hub bolts 3 and tighten them, thereby connecting the electric vehicle wheel hub to the brake disc 1 through the wheel hub bolts 3 and the wheel flange 2.

[0023] The brake disc 1 has a ring-shaped heat dissipation groove 4 around its perimeter. Multiple partitions 5 are fixedly connected inside the heat dissipation groove 4. The multiple partitions 5 are equidistantly distributed around the inner wall of the heat dissipation groove 4. An air chamber is formed between two adjacent partitions 5 and the side wall of the heat dissipation groove 4. Through holes 6 are opened on the side walls of the heat dissipation groove 4 on both sides of the air chamber. The through holes 6 penetrate the side walls of the heat dissipation groove 4. When the wheel rotates, the brake disc 1 rotates synchronously with the wheel. At this time, air can enter the air chamber formed between the partitions 5 and the side wall of the heat dissipation groove 4 and be discharged through the through holes 6, taking away the heat on the brake disc 1.

[0024] The width of the inner cavity of the through hole 6 gradually decreases from one end to the other end of the heat dissipation groove 4. As air is discharged from the air chamber through the through hole 6, the air velocity gradually increases due to the gradual decrease in the cross-sectional area of ​​the inner cavity of the through hole 6.

[0025] A brake caliper 7 with an open end is installed on one side of the brake disc 1. The brake caliper 7 has an arc-shaped structure. There is a gap between the inner wall of the brake caliper 7 and the brake disc 1. An observation window 8 is also provided in the middle section of the brake caliper 7. The observation window 8 makes it convenient for users to observe the internal structure of the brake caliper 7 and facilitates timely replacement of worn parts.

[0026] Brake pads 9 are slidably mounted on the inner wall of brake caliper 7. Heat dissipation holes 10 are provided through brake pads 9 along the length of brake pads 9. Ribs 11 are embedded inside the heat dissipation holes 10. The two sides of the ribs 11 are fixedly connected to the inner walls of the front and rear sides of the heat dissipation holes 10, respectively, to reinforce the brake pads 9 and improve the strength of the brake pads 9.

[0027] The brake pad 9 is fixedly installed with a brake friction plate 12 on the side away from the brake caliper 7, the brake friction plate 12 is made of ceramic material, which can not only reduce the noise generated when it rubs against the brake disc 1, but also greatly improve the wear resistance of the brake friction plate 12;

[0028] A plurality of air inlet holes 13 are formed in the brake friction plate 12 and communicate with the inside of the heat dissipation hole 10, and the through hole 6 formed in the side wall of the heat dissipation groove 4 can be aligned with the air inlet hole 13 when it rotates into the inside of the brake caliper 7, when the through hole 6 formed in the side wall of the heat dissipation groove 4 rotates into the inside of the brake caliper 7, the air discharged through the through hole 6 can blow the surface of the brake friction plate 12 and take away the heat on the surface of the brake friction plate 12, when the through hole 6 rotates to align with the air inlet hole 13 formed in the brake friction plate 12, the air discharged through the through hole 6 can enter the heat dissipation hole 10 through the air inlet hole 13 and be discharged from the end of the heat dissipation hole 10, so as to dissipate heat from the back of the brake friction plate 12 and the inside of the brake pad 9, thereby improving the high temperature resistance of the brake friction plate 12;

[0029] The brake caliper 7 is fixedly installed with a brake piston housing 14 having a piston inside, the brake piston housing 14 is also installed with a brake fluid hose 15 communicating with the inside of the brake piston housing 14, the piston inside the brake piston housing 14 is fixedly installed with a connecting rod near the brake pad 9, the connecting rod penetrates through the side wall of the brake caliper 7 and is slidably connected with the side wall of the brake caliper 7, the brake pad 9 is fixedly installed with the connecting rod at one end inside the brake caliper 7, when the brake fluid hose 15 delivers brake fluid into the brake piston housing 14, the piston inside the brake piston housing 14 can be moved to drive the connecting rod to slide synchronously and push the brake friction plate 12 installed on the brake pad 9 to clamp the brake disc 1, and the friction force between the brake friction plate 12 and the brake disc 1 is used to brake the wheel.

[0030] It should be noted that the wear-resistant and high-temperature-resistant electric vehicle disc brake mechanism, when in use, the brake disc 1 is connected to the electric vehicle hub through the wheel hub bolt 3 and the wheel flange 2, when braking, the brake handle is pressed, the brake fluid is delivered to the piston shell 14 through the brake fluid hose 15, the piston in the piston shell 14 is pushed to move, thereby driving the connecting rod to slide synchronously, the brake pad 9 installed on the brake friction plate 12 is pushed to clamp the brake disc 1, the friction between the brake friction plate 12 and the brake disc 1 is utilized to brake the wheel, when the wheel rotates, the brake disc 1 rotates synchronously with the wheel, at this time, air can enter the air chamber formed between the baffle 5 and the side wall of the heat dissipation groove 4, and is discharged through the through hole 6, taking away the heat on the brake disc 1, when the through hole 6 provided on the side wall of the heat dissipation groove 4 rotates to the inside of the brake caliper 7, the air discharged through the through hole 6 can blow the surface of the brake friction plate 12, taking away the heat on the surface of the brake friction plate 12, and when the through hole 6 rotates to be aligned with the air inlet hole 13 provided on the brake friction plate 12, the air discharged through the through hole 6 can enter the heat dissipation hole 10 through the air inlet hole 13, and is discharged from the end of the heat dissipation hole 10, thereby dissipating heat on the back of the brake friction plate 12 and the inside of the brake pad 9, greatly improving the high-temperature resistance of the brake friction plate 12.

[0031] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of protection of the present application.

Claims

1. A wear-resistant and high-temperature-resistant disc brake mechanism for electric vehicles, comprising a brake disc (1), characterized in that: The brake disc (1) has a ring-shaped heat dissipation groove (4) on its periphery. Multiple partitions (5) are fixedly connected inside the heat dissipation groove (4). The multiple partitions (5) are equidistantly distributed around the inner wall of the heat dissipation groove (4). An air cavity is formed between two adjacent partitions (5) and the side wall of the heat dissipation groove (4). Through holes (6) are opened on the side walls of the heat dissipation groove (4) on both sides of the air cavity. A brake caliper (7) with an open end fitted onto the brake disc (1) is installed on one side of the brake disc (1). A brake pad (9) is slidably installed on the inner wall of the brake caliper (7). A heat dissipation hole (10) penetrating the brake pad (9) is opened in the brake pad (9) along the length direction of the brake pad (9). A brake friction pad (12) is fixedly installed on the side of the brake pad (9) away from the brake caliper (7). A plurality of air inlets (13) communicating with the interior of the heat dissipation hole (10) are opened on the brake friction pad (12). When the through hole (6) opened on the side wall of the heat dissipation groove (4) is rotated into the brake caliper (7), it can be aligned with the air inlets (13).

2. The wear-resistant and high-temperature-resistant disc brake mechanism for electric vehicles according to claim 1, characterized in that: A wheel flange (2) is fixedly installed on one side of the brake disc (1), and a plurality of wheel hub bolts (3) are connected to the wheel flange (2) in a ring-shaped distribution.

3. The wear-resistant and high-temperature-resistant disc brake mechanism for electric vehicles according to claim 1, characterized in that: The through hole (6) penetrates the side wall of the heat dissipation groove (4). The width of the inner cavity at one end of the through hole (6) gradually decreases to the width at the other end of the through hole (6).

4. The wear-resistant and high-temperature-resistant disc brake mechanism for electric vehicles according to claim 1, characterized in that: The brake caliper (7) has an arc-shaped structure, and there is a gap between the inner wall of the brake caliper (7) and the brake disc (1). An observation window (8) is also provided in the middle section of the brake caliper (7).

5. The wear-resistant and high-temperature-resistant disc brake mechanism for electric vehicles according to claim 1, characterized in that: The heat dissipation hole (10) is internally embedded with a rib plate (11), and the two sides of the rib plate (11) are fixedly connected to the inner walls of the front and rear sides of the heat dissipation hole (10).

6. The wear-resistant and high-temperature-resistant disc brake mechanism for electric vehicles according to claim 2, characterized in that: The brake caliper (7) is fixedly mounted on the side away from the wheel flange (2) with a brake piston housing (14) having a piston inside. A brake fluid hose (15) communicating with the inside of the brake piston housing (14) is also mounted on the brake piston housing (14).

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