A rivet cap brake pad steel back
By optimizing the multi-layer structure design and heat dissipation channels of the rivet-nose brake pad steel backing, the heat dissipation, bonding reliability, and protection issues of traditional brake pad steel backing are solved, resulting in higher braking efficiency and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI RUIRONG AUTO PARTS CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-06-05
AI Technical Summary
Traditional brake pads with steel backing have problems such as insufficient heat dissipation, poor reliability of friction substrate bonding, lack of shock absorption structure, and weak protection performance, which are particularly evident in high-frequency braking scenarios of heavy vehicles.
A steel backing for a rivet-cap brake pad was designed, which uses a protruding post and rivet-cap structure to enhance the physical anchoring of the friction substrate. It is equipped with a porous three-dimensional heat dissipation channel and combines a rubber-modified phenolic resin coating, a cold-rolled low-carbon steel layer, a nitrile rubber layer, a ceramic coating, and an electrophoretic coating to form a multi-layer structure to improve bonding strength, heat dissipation efficiency, vibration reduction and noise reduction, and corrosion resistance.
It effectively prevents interlayer slippage, improves heat dissipation efficiency, extends service life, reduces braking noise, enhances corrosion resistance, and improves overall structural stability and durability.
Smart Images
Figure CN224326595U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of brake pad steel backing technology, specifically a rivet-cap brake pad steel backing. Background Technology
[0002] The steel backing of brake pads is a core supporting component of the friction substrate, and its performance directly affects braking safety and service life. Currently, traditional brake pad steel backings suffer from numerous technical limitations and fail to meet practical requirements:
[0003] Insufficient heat dissipation is a prominent defect. Existing steel backings mostly use sparse single heat dissipation holes, which cannot form convection channels. Braking heat is easy to accumulate, causing thermal fade, reducing braking efficiency, and accelerating the aging of the adhesive layer, shortening the life of the brake pads. The problem is more obvious in high-frequency braking scenarios of heavy vehicles. The bonding reliability of the friction substrate is poor. The bonding surface of the steel backing is smooth and has no physical anchoring. There is no special bonding layer. It relies only on ordinary resin bonding. Under high temperature or impact, interlayer slippage is prone to occur. Traditional steel backings lack effective shock absorption structures, resulting in obvious braking noise. Protection relies only on a single spray paint, which has weak corrosion resistance and high temperature resistance. Utility Model Content
[0004] The purpose of this utility model is to provide a steel backing for a rivet-cap brake pad, which can solve the problems in the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a rivet-nose brake pad steel back, comprising a brake pad steel back, wherein mounting ends are provided on both sides of the top of the brake pad steel back, and a slot is provided between the mounting ends, the slot being located near one of the mounting ends, and slots are provided at both ends of the brake pad steel back, wherein a protrusion is provided in the slot, and a rivet head is riveted onto the protrusion, the shape of the rivet head matching the slot, the slot being opened on the surface of the brake pad steel back that is bonded to the friction substrate, and an adhesive block is provided on the same surface of the brake pad steel back as the slot, the adhesive block being evenly distributed on the surface of the brake pad steel back;
[0006] The brake pad steel back has the side that is bonded to the friction substrate as the top, and the brake pad steel back is configured from top to bottom as a friction material bonding layer, a basic support layer, a shock absorption and noise reduction layer, a high temperature protection layer, and an anti-corrosion protection layer.
[0007] Preferably, the brake pad steel back is provided with heat dissipation holes, and strip-shaped heat dissipation grooves are provided between the heat dissipation holes, and the heat dissipation holes are connected by the heat dissipation grooves.
[0008] Preferably, the friction material bonding layer is a rubber-modified phenolic resin coating, which is uniformly sprayed onto the surface of the base support layer and then cured and bonded.
[0009] Preferably, the basic support layer is a cold-rolled low-carbon steel layer.
[0010] Preferably, the vibration damping and noise reduction layer is a nitrile rubber layer, and the vibration damping and noise reduction layer is bonded to the base support layer by hot pressing.
[0011] Preferably, the high-temperature protective layer is a ceramic coating.
[0012] Preferably, the anti-corrosion protective layer is an electrophoretic coating.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] This invention features uniformly distributed adhesive blocks on the steel backing of brake pads, forming a raised structure on the surface of the steel backing. When in contact with the friction substrate, these blocks embed into the substrate, creating a physical anchor and preventing interlayer slippage common in traditional planar adhesives. Especially under high-frequency braking impact, this effectively resists the separation force between the friction substrate and the steel backing. Uniformly spaced heat dissipation holes directly expel heat from the steel backing surface, reducing localized high-temperature accumulation. This is particularly effective in reducing the risk of adhesive layer failure due to high temperatures, especially in the core heat-generating area of the bonding surface between the friction substrate and the steel backing. Heat dissipation grooves connect adjacent heat dissipation holes, forming a porous structure. The three-dimensional heat dissipation channels with grooves not only expand the heat dissipation area but also guide airflow within the grooves, accelerating heat convection and exchange, improving heat dissipation efficiency, mitigating heat fade, and extending the overall service life of the brake pads. The shock absorption and noise reduction layer effectively absorbs high-frequency vibrations generated during braking, reducing the transmission of vibrations to the braking system and vehicle body. The high-temperature protective layer blocks the transmission of high temperatures during braking to the interior of the steel backing, preventing the base support layer from oxidizing or weakening due to high temperatures. The anti-corrosion protective layer forms a complete protective film on the surface of the steel backing, effectively resisting the erosion of corrosive media and extending the anti-corrosion life of the steel backing. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a side view of the structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the layered structure of this utility model.
[0018] In the diagram: 1. Brake pad steel backing; 2. Mounting end; 3. Rivet cap; 4. Protrusion; 5. Slot; 6. Heat dissipation hole; 7. Heat dissipation groove; 8. Adhesive block; 9. Friction material bonding layer; 10. Base support layer; 11. Vibration damping and noise reduction layer; 12. High temperature protection layer; 13. Corrosion protection layer. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-3 This utility model provides the following technical solutions:
[0021] A rivet-cap brake pad steel backing includes a brake pad steel backing 1. Mounting ends 2 are provided on both sides of the top of the brake pad steel backing 1, and a groove 5 is provided between the mounting ends 2. The groove 5 is positioned closer to one of the mounting ends 2. Both ends of the brake pad steel backing 1 have slots, and protrusions 4 are provided within the slots. Rivet caps 3 are riveted to the protrusions 4, and the shape of the rivet caps 3 matches the slots. The slots are located on the surface of the brake pad steel backing 1 that is bonded to the friction substrate. The mounting ends 2 on both sides of the top of the brake pad steel backing provide a clear reference for the connection between the steel backing and the braking system. The groove 5, in conjunction with the mounting ends 2, allows for quick positioning and calibration of the steel backing during assembly, avoiding uneven braking force caused by installation deviations. Simultaneously, the groove 5 also helps to limit the lateral displacement of the steel backing during braking, reducing the risk of loosening. The protruding post 4 and the rivet 3 in the grooves at both ends of the steel back are designed to match the shape, avoiding stress concentration caused by shape mismatch at the riveting part and extending the service life of the riveting structure. The groove is opened on the bonding surface between the steel back and the friction substrate. The rivet 3 can indirectly provide additional support points for the friction substrate, preventing the friction substrate from falling off the edge of the steel back under braking impact, and strengthening the overall structural stability. On the same surface as the groove on the brake pad steel back 1, there is an adhesive block 8. The adhesive blocks 8 are evenly distributed on the surface of the brake pad steel back 1. The evenly distributed adhesive blocks 8 form a raised structure on the surface of the steel back. When in contact with the friction substrate, they can be embedded into the substrate to form physical anchoring, avoiding interlayer slippage that is easy to occur in traditional planar bonding. Especially under high-frequency braking impact, it effectively resists the separation force between the friction substrate and the steel back.
[0022] The brake pad steel backing 1 has heat dissipation holes 6, and strip-shaped heat dissipation grooves 7 are formed between the heat dissipation holes 6. The heat dissipation holes 6 are connected by the heat dissipation grooves 7. The evenly distributed heat dissipation holes can directly dissipate the heat on the surface of the steel backing through the holes, reducing the accumulation of local high temperature. Especially for the core heat-generating area of the bonding surface between the friction substrate and the steel backing, it effectively reduces the risk of the bonding layer failing due to high temperature. The heat dissipation grooves connect adjacent heat dissipation holes to form a three-dimensional heat dissipation channel with multiple holes and grooves. This not only expands the heat dissipation area, but also guides the air to flow in the grooves, accelerates heat convection and exchange, improves heat dissipation efficiency, alleviates heat fade, and extends the overall service life of the brake pad.
[0023] The brake pad steel back 1 has the side that is bonded to the friction substrate as the top. The brake pad steel back 1 is configured from top to bottom as a friction material bonding layer 9, a base support layer 10, a shock absorption and noise reduction layer 11, a high temperature protection layer 12, and an anti-corrosion protection layer 13.
[0024] The friction material bonding layer 9 is a rubber-modified phenolic resin coating, which is uniformly sprayed onto the surface of the base support layer 10 and then cured. The base support layer 10 is a cold-rolled low-carbon steel layer. The good ductility of low-carbon steel facilitates the stamping and forming of the steel backing, reducing production difficulty and cost, improving the surface flatness and strength of the steel, and ensuring that the steel backing can withstand greater frictional pressure without deformation during braking. This provides a stable support base for the friction substrate and avoids uneven braking force caused by deformation of the steel backing. The vibration damping and noise reduction layer 11 is a nitrile rubber layer, which is bonded to the base support layer 10 by hot pressing. The vibration damping and noise reduction layer 11 has excellent elasticity and damping performance. After being bonded to the base support layer 10 by hot pressing, it can effectively absorb high-frequency vibrations generated during braking and reduce the transmission of vibrations to the braking system and vehicle body. At the same time, the rubber layer can also buffer the impact between the friction substrate and the steel backing, reducing braking noise. The high-temperature protective layer 12 is a ceramic coating. This layer possesses excellent high-temperature resistance, preventing the high temperatures generated during braking from being transferred into the steel backing, thus avoiding oxidation or strength reduction in the base support layer 10 due to high temperatures. Simultaneously, the low thermal conductivity of the ceramic coating reduces heat transfer to other components of the braking system (such as the caliper), protecting the performance of surrounding components. The anti-corrosion protective layer 13 is an electrophoretic coating. This layer forms a complete protective film on the surface of the steel backing, effectively resisting the erosion of corrosive media such as rainwater, salt, and brake fluid, preventing rust or corrosion perforation of the steel backing. It is particularly suitable for rainy, coastal, and other humid environments, extending the anti-corrosion life of the steel backing.
[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A rivet-cap brake pad steel backing, comprising a brake pad steel backing (1), characterized in that, The brake pad steel backing (1) has mounting ends (2) on both sides of its top, and a slot (5) is provided between the mounting ends (2). The slot (5) is located near one of the mounting ends (2). Both ends of the brake pad steel backing (1) have slots. A protruding post (4) is provided in the slot. A rivet cap (3) is riveted to the protruding post (4). The shape of the rivet cap (3) matches the slot. The slot is opened on the surface of the brake pad steel backing (1) that is bonded to the friction substrate. An adhesive block (8) is provided on the same surface as the slot on the brake pad steel backing (1). The adhesive blocks (8) are evenly distributed on the surface of the brake pad steel backing (1). The side of the brake pad steel backing (1) that is bonded to the friction substrate is the top. The brake pad steel backing (1) is arranged from top to bottom as a friction material bonding layer (9), a base support layer (10), a shock absorption and noise reduction layer (11), a high temperature protection layer (12), and an anti-corrosion protection layer (13).
2. The steel backing for a rivet-cap brake pad according to claim 1, characterized in that, The brake pad steel back (1) is provided with heat dissipation holes (6), and strip-shaped heat dissipation grooves (7) are provided between the heat dissipation holes (6), and the heat dissipation holes (6) are connected through the heat dissipation grooves (7).
3. The steel backing for a rivet-cap brake pad according to claim 1, characterized in that, The friction material bonding layer (9) is configured as a rubber-modified phenolic resin coating.
4. The steel backing for a rivet-cap brake pad according to claim 1, characterized in that, The basic support layer (10) is set as a cold-rolled low-carbon steel layer.
5. The steel backing for a rivet-cap brake pad according to claim 1, characterized in that, The shock-absorbing and noise-reducing layer (11) is made of nitrile rubber and is bonded to the base support layer (10).
6. The steel backing for a rivet-cap brake pad according to claim 1, characterized in that, The high-temperature protective layer (12) is configured as a ceramic coating.
7. The steel backing for a rivet-cap brake pad according to claim 1, characterized in that, The anti-corrosion protective layer (13) is set as an electrophoretic coating.