Disc brake for automobile

Abstract

The utility model belongs to the technical field of brakes, and particularly relates to a disc brake for an automobile, which comprises a brake disc arranged on an axle, connected with the axle and capable of rotating along with the axle, a brake caliper arranged on the brake disc and internally provided with a first oil duct and a second oil duct, and a second oil duct arranged on the brake caliper, the brake block is arranged on the brake caliper, a brake pad is arranged on the brake block, and the brake pad is in contact with the brake disc; the friction structure is arranged on the brake pad; one side of the brake caliper is further provided with an oil inlet communicated with the first oil channel. The brake caliper has the beneficial effects that the brake block is arranged on the brake caliper and makes contact with the brake disc, the brake pad is arranged on the brake block, when the brake caliper is subjected to the hydraulic action, the brake block can be pushed to the brake disc, braking force is generated through friction between the brake pad and the brake disc, and the friction structure is arranged on the brake pad, so that the braking force is generated; and the friction force in rainy and snowy weather can be effectively improved.

Description

Technical Field

[0001] This application belongs to the technical field of brakes, and particularly relates to a disc brake for automobiles. Background Art

[0002] An automotive brake is a braking device for an automobile. Almost all brakes used in automobiles are friction brakes, which can be divided into two categories: drum brakes and disc brakes. The rotating element in the friction pair of a drum brake is a brake drum, and its working surface is a cylindrical surface. The rotating element of a disc brake is a rotating brake disc, with its end face as the working surface. There is a hydraulic type of disc brake, which is hydraulically controlled. The main components include a brake disc, a wheel cylinder, a brake caliper, and oil pipes. Disc brakes have the advantages of fast heat dissipation, light weight, simple structure, convenient adjustment, especially good high-temperature resistance under high loads, stable braking effect, and are not afraid of mud and water invasion. Many sedans use disc brakes when driving in winter and under harsh road conditions.

[0003] A patent with the publication number CN207437629U discloses an automotive disc brake, which includes an upper disc, a lower disc, ventilation holes, rib plates, friction blocks, bosses, mounting holes, and flanges. The upper disc and the lower disc are coaxially arranged. There are rib plates between the upper disc and the lower disc, and the rib plates are fixedly connected to the upper disc and the lower disc. There are ventilation holes between the rib plates. Friction blocks are symmetrically arranged on the outer surfaces of the upper disc and the lower disc. A flange is arranged on the outer surface of the upper disc. The flange is cylindrical and coaxially arranged with the upper disc, and the flange is fixedly connected to the upper disc. There is a boss at the front end of the flange, and the flange is fixedly connected to the boss.

[0004] The above patent improves the heat dissipation effect of the friction block by providing an arc-shaped ventilation duct inside the friction block and using a semi-metallic composite material for the friction block. Although the heat dissipation effect can be improved, the friction effect of the friction block is ignored. Once it rains or snows, the braking force stability will become poor, reducing the safety performance, and improvement is needed. Utility Model Content

[0005] The purpose of this application is to provide a disc brake for automobiles, which can solve the above problems.

[0006] The purpose of this application is to provide a disc brake for automobiles, including:

[0007] A brake disc, which is arranged on the axle and connected to the axle, and rotates with the axle:

[0008] A brake caliper, which is arranged on the brake disc and has a first oil passage and a second oil passage inside;

[0009] A brake block, which is arranged on the brake caliper, and a brake pad is arranged on the brake block, and the brake pad contacts the brake disc;

[0010] A friction structure is provided on the brake pad;

[0011] Among them, an oil inlet communicating with the first oil passage is also provided on one side of the brake caliper.

[0012] Adopting the above-mentioned disc brake for automobiles, the brake disc is arranged on the axle and connected to the axle, and rotates together with the axle. The brake caliper is arranged on the brake disc, straddling both sides of the brake disc. The brake caliper is internally provided with a first oil passage and a second oil passage for transmitting hydraulic fluid to generate braking force. An oil inlet communicating with the first oil passage is also provided on one side of the brake caliper. The hydraulic fluid enters the brake caliper through the oil inlet and pushes components such as pistons to work. The brake pads are arranged on the brake caliper and are in contact with the brake disc. Friction structures are provided on the brake pads, which can effectively improve the friction force in rainy and snowy weather. When the driver steps on the brake pedal, the braking system is activated. The hydraulic fluid is transported through the oil pipe to the oil inlet of the brake caliper. After the hydraulic fluid enters the brake caliper, it flows to the pistons on both sides through the first oil passage and the second oil passage respectively. The pistons push the brake pads on the brake blocks against the brake disc under the action of hydraulic pressure, and strong friction force is generated between the brake pads and the brake disc, thereby slowing down the rotation speed of the wheels and achieving the braking effect.

[0013] Further, the brake block includes a first brake block and a second brake block. The two brake blocks are respectively located in the first oil passage and the second oil passage, and the first oil passage and the second oil passage are communicated. By introducing hydraulic fluid, the two brake blocks push the brake pads to clamp the brake disc.

[0014] In this application, the double-piston design enables the two brake blocks to apply force to both sides of the brake disc simultaneously and evenly. The balanced braking force distribution helps to reduce the uneven wear phenomenon during braking, thereby extending the service life of the brake pads and the brake disc. At the same time, compared with the single-piston design, the double pistons can provide a greater clamping force. The two pistons working simultaneously can generate a greater hydraulic pressure. Under the same braking conditions, the double-piston brake can reduce the vehicle speed faster and provide a more efficient braking effect. And during high-speed or long-time braking, a large amount of heat will be generated on the brake disc and the brake pads. The double-piston design helps to disperse these heats. The two brake blocks and pistons can transfer the heat to the brake caliper and the surrounding air more effectively. The ability to disperse heat helps to reduce the phenomenon of heat fade and maintain the stability of the braking performance.

[0015] In addition, since the two pistons work simultaneously, they can respond to the braking command faster and push the brake pads against the brake disc. The fast response speed is particularly important for emergency braking situations, which can shorten the braking distance and improve driving safety.

[0016] Further: The brake pad includes:

[0017] A friction layer, with a friction structure disposed on the friction layer;

[0018] An installation layer, disposed on one side of the friction layer and connected to the friction layer, for connecting to a brake pad;

[0019] Wherein, the friction layer and the installation layer are connected through a connection layer.

[0020] By providing a friction structure on the friction layer, the contact area and friction force with the brake disc can be effectively increased, improving the braking effect. The installation layer is located on one side of the friction layer, used to connect the friction layer and the brake pad, ensuring that the brake pad can be firmly installed on the brake caliper. At the same time, a connection layer is provided between the friction layer and the installation layer to firmly bond the friction layer and the installation layer together, ensuring that they will not separate or produce relative sliding during the braking process.

[0021] Further, the friction structure includes:

[0022] Friction blocks;

[0023] Arc-shaped grooves, provided on the friction blocks;

[0024] Oblique grooves, provided on the friction blocks and communicating with the arc-shaped grooves;

[0025] Wherein, multiple oblique grooves are provided, and the multiple oblique grooves are evenly spaced.

[0026] The friction blocks are used to provide the main friction. The arc-shaped grooves are provided on the friction blocks, and multiple oblique grooves are also provided on the friction blocks. The oblique grooves and the arc-shaped grooves divide the friction blocks into multiple independent blocks, making the distribution of the contact pressure between the entire friction layer and the brake disc more uniform, thereby effectively increasing the overall braking torque and enhancing the stability of the braking process. In addition, due to the setting of the arc-shaped grooves and the oblique grooves, the thermal expansion of the friction blocks caused by temperature rise during the braking process can be compensated through the grooves. At the same time, the accumulation of heat can be reduced, and the rise of temperature can be inhibited.

[0027] Further, the connection layer includes connection protrusions provided on the installation layer and a metal adhesive provided on the connection protrusions. The connection protrusions are composed of multiple intersecting convex strips, and the convex strips are intertwined to form a mesh structure.

[0028] The connecting protrusions are composed of multiple intersecting convex bars, which are intertwined with each other on the horizontal and vertical planes to form a net-like structure, greatly increasing the contact area between the connecting layer, the mounting layer and the friction layer, thereby improving the connection strength and stability. The metal adhesive is provided on the connecting protrusions to further enhance the bonding force between the connecting layer, the friction layer and the mounting layer. It has excellent bonding performance and high-temperature resistance, and can maintain a stable bonding effect under high-temperature and high-pressure environments. It can tightly bond the connecting protrusions with the friction layer and the mounting layer to form an integral structure, improving the overall strength and durability of the brake pad.

[0029] Furthermore, mounting protrusions are provided on the mounting layer. The mounting protrusions are connected to the brake block, and reinforcing ribs are provided on the periphery of the mounting protrusions.

[0030] By providing the mounting protrusions, the connection with the brake block can be realized, ensuring that the brake pad can be closely fitted when installed on the brake caliper and is not prone to loosening or falling off. The setting of the reinforcing ribs enhances the structural strength of the mounting protrusions, provides additional support and stability for the mounting protrusions, enabling them to withstand greater stress and the ability to prevent deformation. During long-term or high-intensity braking, the brake pad is prone to deformation or wear. The presence of the reinforcing ribs can effectively prevent the deformation of the mounting protrusions and the surrounding areas, maintaining the shape and size stability of the brake pad.

[0031] The beneficial effects of this application are as follows:

[0032] 1. The brake block is arranged on the brake caliper and contacts the brake disc. A brake pad is provided on the brake block. When the brake caliper is subjected to hydraulic pressure, the brake block will be pushed towards the brake disc, and braking force is generated through the friction between the brake pad and the brake disc. By providing a friction structure on the brake pad, the friction force in rainy and snowy weather can be effectively improved;

[0033] 2. In this application, the double-piston design enables the two brake blocks to simultaneously and evenly apply force to both sides of the brake disc. The balanced braking force distribution helps to reduce the uneven wear phenomenon during braking, thereby extending the service life of the brake pad and the brake disc. Moreover, the double pistons can provide a greater clamping force. When the two pistons work simultaneously, a greater hydraulic pressure can be generated. Under the same braking conditions, the double-piston brake can reduce the vehicle speed faster, provide a more efficient braking effect, shorten the braking distance, and improve driving safety;

[0034] 3. The inclined grooves and arc-shaped grooves divide the friction block into multiple independent blocks, making the contact pressure distribution between the overall friction layer and the brake disc more uniform, thereby effectively improving the overall braking torque and enhancing the stability of the braking process. At the same time, during the support process, the thermal expansion of the friction block caused by temperature rise can be compensated by the grooves, and the accumulation of heat can also be reduced, suppressing the rise in temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 FIG. is a schematic structural diagram of the present utility model;

[0036] Figure 2 FIG. is a schematic structural diagram of the brake pad of the present utility model;

[0037] Figure 3 FIG. is another schematic structural diagram of the brake pad of the present utility model.

[0038] In the figures, the reference numerals are: 100, brake disc; 200, brake caliper; 210, first oil passage; 220, second oil passage; 230, oil inlet; 300, first brake block; 320, second brake block; 400, brake pad; 410, friction layer; 420, mounting layer; 421, mounting protrusion; 422, reinforcing rib; 430, connecting layer; 431, connecting protrusion; 500, friction structure; 510, friction block; 520, arc groove; 530, inclined groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0040] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0041] The disc brake for an automobile provided in the embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0042] Embodiment 1:

[0043] As Figures 1 to 3 shown, the embodiment of the present application provides a disc brake for an automobile, including:

[0044] A brake disc 100, which is arranged on the axle and connected to the axle, and rotates together with the axle:

[0045] The brake caliper 200 is disposed on the brake disc 100, and a first oil passage 210 and a second oil passage 220 are arranged inside it;

[0046] The brake pads are disposed on the brake caliper 200, and a brake lining 400 is arranged on the brake pads. The brake lining 400 contacts the brake disc 100;

[0047] The friction structure 500 is disposed on the brake lining 400;

[0048] Wherein, an oil inlet 230 communicating with the first oil passage 210 is further arranged on one side of the brake caliper 200.

[0049] In some embodiments of the present application, as Figure 1 shown, the above-mentioned disc brake for an automobile is adopted. The brake disc 100 is disposed on the axle and connected to the axle, and rotates together with the axle. The brake caliper 200 is disposed on the brake disc 100, straddling both sides of the brake disc 100. A first oil passage 210 and a second oil passage 220 are arranged inside the brake caliper 200 for transmitting hydraulic fluid to generate braking force. An oil inlet 230 communicating with the first oil passage 210 is further arranged on one side of the brake caliper 200. The hydraulic fluid enters the brake caliper 200 through the oil inlet 230 to push components such as pistons to work. The brake pads are disposed on the brake caliper 200 and contact the brake disc 100. A brake lining 400 is arranged on the brake pads. When the brake caliper 200 is subjected to hydraulic pressure, the brake pads will be pushed towards the brake disc 100, and braking force is generated through the friction between the brake lining 400 and the brake disc 100. By arranging the friction structure 500 on the brake lining 400, the friction force in rainy and snowy weather can be effectively improved. When the driver steps on the brake pedal, the braking system is activated, and the hydraulic fluid is transported through the oil pipe to the oil inlet 230 of the brake caliper 200. After the hydraulic fluid enters the brake caliper 200, it flows to the pistons on both sides through the first oil passage 210 and the second oil passage 220 respectively. The pistons push the brake lining 400 on the brake pads against the brake disc 100 under the action of hydraulic pressure, and a strong friction force is generated between the brake lining 400 and the brake disc 100, thereby slowing down the rotation speed of the wheel and achieving the braking effect.

[0050] Embodiment 2:

[0051] The embodiment of the present application provides a disc brake for an automobile. In addition to including the above technical features, the disc brake for an automobile in the embodiment of the present application further includes the following technical features.

[0052] As Figure 1As shown, the brake pads include a first brake pad 300 and a second brake pad 320. The two brake pads are respectively located in the first oil passage 210 and the second oil passage 220, and the first oil passage 210 and the second oil passage 220 are communicated. By introducing hydraulic fluid, the two brake pads push the brake shoe 400 to clamp the brake disc 100.

[0053] In the embodiment of the present application, the double-piston design enables the two brake pads to apply forces to both sides of the brake disc 100 simultaneously and evenly. The balanced braking force distribution helps to reduce the uneven wear phenomenon during braking, thereby extending the service lives of the brake shoe 400 and the brake disc 100. At the same time, compared with the single-piston design, the double piston can provide a greater clamping force. The two pistons working simultaneously can generate a greater hydraulic pressure. Under the same braking conditions, the double-piston brake can reduce the vehicle speed faster and provide a more efficient braking effect. Moreover, during high-speed or long-time braking, a large amount of heat will be generated on the brake disc 100 and the brake shoe 400. The double-piston design helps to disperse this heat. The two brake pads and pistons can transfer the heat to the brake caliper 200 and the surrounding air more effectively. The ability to disperse heat helps to reduce the heat fade phenomenon and maintain the stability of the braking performance.

[0054] In addition, since the two pistons work simultaneously, they can respond to the braking command faster and push the brake shoe 400 towards the brake disc 100. The fast response speed is particularly important for emergency braking situations, which can shorten the braking distance and improve driving safety.

[0055] Embodiment 3:

[0056] The embodiment of the present application provides a disc brake for an automobile. In addition to including the above technical features, the disc brake for an automobile in the embodiment of the present application further includes the following technical features.

[0057] As Figure 2 and Figure 3 shown, the brake shoe 400 includes:

[0058] A friction layer 410, on which a friction structure 500 is arranged;

[0059] An installation layer 420, arranged on one side of the friction and connected to the friction layer 410 for connecting with the brake pad;

[0060] Wherein, the friction layer 410 and the installation layer 420 are connected through a connection layer 430.

[0061] In the embodiments of the present application, by providing a friction structure 500 on the friction layer 410, the contact area and friction force with the brake disc 100 can be effectively increased, improving the braking effect. The installation layer 420 is located on one side of the friction layer 410 and is used to connect the friction layer 410 to the brake pad, ensuring that the brake pad 400 can be stably installed on the brake caliper 200. At the same time, a connection layer 430 is provided between the friction layer 410 and the installation layer 420 to firmly bond the friction layer 410 and the installation layer 420 together, ensuring that they do not separate or produce relative sliding during the braking process.

[0062] Furthermore, installation protrusions 421 are provided on the installation layer 420. The installation protrusions 421 are connected to the brake pad, and reinforcing ribs 422 are provided on the periphery of the installation protrusions 421.

[0063] By providing the installation protrusions 421, the connection with the brake pad can be achieved, ensuring that the brake pad 400 can fit tightly when installed on the brake caliper 200 and is not easily loosened or detached. The setting of the reinforcing ribs 422 enhances the structural strength of the installation protrusions 421, provides additional support and stability for the installation protrusions 421, enabling them to withstand greater stress and prevent deformation. During long-term or high-intensity braking processes, the brake pad 400 is prone to deformation or wear. The presence of the reinforcing ribs 422 can effectively prevent the deformation of the installation protrusions 421 and the surrounding areas, maintaining the shape and size stability of the brake pad 400.

[0064] Embodiment 4:

[0065] The embodiments of the present application provide a disc brake for an automobile. In addition to including the above technical features, the disc brake for an automobile in the embodiments of the present application further includes the following technical features.

[0066] As Figure 2 and Figure 3 shown, the friction structure 500 includes:

[0067] Friction blocks 510;

[0068] Arc-shaped grooves 520, provided on the friction blocks 510;

[0069] Oblique grooves 530, provided on the friction blocks 510 and communicating with the arc-shaped grooves 520;

[0070] Among them, a plurality of oblique grooves 530 are provided, and the plurality of oblique grooves 530 are evenly spaced.

[0071] In the embodiments of the present application, the friction block 510 is used to provide the main friction. The arc-shaped groove 520 is provided on the friction block 510, and a plurality of inclined grooves 530 are also provided on the friction block 510. The inclined grooves 530 and the arc-shaped groove 520 divide the friction block 510 into multiple independent blocks, making the contact pressure distribution between the entire friction layer 410 and the brake disc 100 more uniform, thereby effectively improving the overall braking torque and enhancing the stability of the braking process. In addition, due to the arrangement of the arc-shaped groove 520 and the inclined grooves 530, the thermal expansion of the friction block 510 caused by temperature rise during the support process can be compensated through the grooves. At the same time, the accumulation of heat can be reduced, and the rise of temperature can be inhibited.

[0072] Furthermore, the connection layer 430 includes connection protrusions 431 provided on the mounting layer 420 and a metal adhesive provided on the connection protrusions 431. The connection protrusions 431 are composed of multiple intersecting ridges, and the ridges intersect with each other to form a network structure.

[0073] In some embodiments of the present application, the connection protrusions 431 are composed of multiple intersecting ridges. These ridges intersect with each other in the horizontal and vertical planes to form a network structure, greatly increasing the contact area between the connection layer 430 and the mounting layer 420 and the friction layer 410, thereby improving the strength and stability of the connection. The metal adhesive is provided on the connection protrusions 431 and is used to further enhance the bonding force between the connection layer 430 and the friction layer 410 and the mounting layer 420. It has excellent bonding performance and high-temperature resistance and can maintain a stable bonding effect under high-temperature and high-pressure environments. It can tightly bond the connection protrusions 431 with the friction layer 410 and the mounting layer 420 together to form an integral structure, improving the overall strength and durability of the brake pad 400.

[0074] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0075] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A disc brake for an automobile, characterized in that: Comprising: A brake disc (100), disposed on and connected to an axle, and rotating together with the axle: A brake caliper (200), disposed on the brake disc (100), and having a first oil passage (210) and a second oil passage (220) provided therein; Brake pads, disposed on the brake caliper (200), with brake linings (400) provided on the brake pads, and the brake linings (400) being in contact with the brake disc (100); A friction structure (500), disposed on the brake linings (400); Wherein, an oil inlet (230) communicating with the first oil passage (210) is further provided on one side of the brake caliper (200).

2. The disc brake for an automobile according to claim 1, wherein: The brake pads include a first brake pad (300) and a second brake pad (320), the two brake pads are respectively located in the first oil passage (210) and the second oil passage (220), and the first oil passage (210) and the second oil passage (220) communicate with each other. By introducing oil, the two brake pads push the brake linings (400) to clamp the brake disc (100).

3. The disc brake for an automobile according to claim 2, characterized in that: The brake linings (400) include: A friction layer (410), with the friction structure (500) disposed on the friction layer (410); An installation layer (420), disposed on one side of the friction layer and connected to the friction layer (410), for connecting with the brake pads; Wherein, the friction layer (410) and the installation layer (420) are connected through a connection layer (430).

4. The disc brake for an automobile according to claim 3, wherein: The friction structure (500) includes: Friction blocks (510); Arc-shaped grooves (520), provided on the friction blocks (510); Oblique grooves (530), provided on the friction blocks (510) and communicating with the arc-shaped grooves (520); Wherein, a plurality of oblique grooves (530) are provided, and the plurality of oblique grooves (530) are evenly spaced.

5. A disc brake for an automobile according to claim 4, characterized in that: The connection layer (430) includes connection protrusions (431) provided on the installation layer (420) and a metal adhesive provided on the connection protrusions (431). The connection protrusions (431) are composed of multiple intersecting ridges, and the ridges intersect with each other to form a network structure.

6. The disc brake for vehicle according to claim 3, characterized in that: Installation protrusions (421) are provided on the installation layer (420), the installation protrusions (421) are connected to the brake pads, and reinforcing ribs (422) are provided on the periphery of the installation protrusions (421).

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