Disc brake calipers

Abstract

The utility model relates to a disc brake caliper which comprises a first caliper body and a second caliper body, connecting lugs are arranged at the two ends of the first caliper body and the two ends of the second caliper body, the first caliper body and the second caliper body are fixedly connected through the connecting lugs, oil inlet holes are formed in the two ends of the first caliper body, and a mounting cavity for mounting a brake pad is formed between the first caliper body and the second caliper body. An end cover is arranged on one side of the first clamp body, first heat dissipation holes are vertically formed in the end cover, first heat dissipation structures are symmetrically arranged on the two sides of the end cover, the connecting lugs are provided with second heat dissipation structures, and the heat dissipation effect is greatly improved through the arrangement of the first heat dissipation holes, the first heat dissipation structures and the second heat dissipation structures on the connecting lugs. The brake performance of the calipers is prevented from being reduced due to high temperature, the service life of the calipers is prolonged, and meanwhile riding safety is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of brake technology, specifically to a disc brake caliper. Background Technology

[0002] Brake calipers are the core component of the braking system. Their main function is to generate resistance by squeezing the brake disc, thereby slowing down or stopping the vehicle. The working principle of brake calipers is to use hydraulic or mechanical force to push the brake pads against the rotating brake disc, and use friction to slow down the wheels. When the driver operates the brake lever or pedal, the brake master cylinder generates pressure. This pressure is transmitted through the brake lines to the piston in the caliper. The piston then pushes the brake pads tightly against the brake disc, thereby generating sufficient friction to slow down the rotational speed of the wheels.

[0003] The publication number CN212839063U discloses a novel brake pad mounting structure for a disc brake caliper, including a caliper body. The caliper body has opposing brake pad mounting cavities. One side of the caliper body has an opening communicating with the brake pad mounting cavity for the brake pad to enter. A spring plate is disposed between the brake pad and the caliper body. The key feature is that the caliper body has opposing first and second mounting notches on the other side of the opposing opening. One end of the spring plate passes through the first or second mounting notch and extends into the caliper body to form a first retaining end, while the other end is connected to the first or second mounting notch. The brake pads abut against each other to form a second retaining end, and one side of the brake pad abuts against the first retaining end to form a first positioning structure. A second positioning structure is provided between the two ends of the brake pad and the brake pad mounting cavity. The brake pad is installed in the brake pad mounting cavity through the first and second positioning structures. This technology lacks a heat dissipation structure in the caliper body, and the high temperature generated between the brake pad and the brake disc cannot be dissipated in time. The high temperature will reduce the friction coefficient of the brake pad and the brake disc, resulting in weakened braking force, extended braking distance, and affected driving safety. At the same time, prolonged exposure to high temperature will accelerate the wear of the brake pad and brake disc and shorten their service life. Therefore, this technology still has some room for improvement. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a disc brake caliper to address the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a disc brake caliper, comprising a first caliper body and a second caliper body, both ends of the first caliper body and the second caliper body are provided with connecting ears, the first caliper body and the second caliper body are fixedly connected by the connecting ears, both ends of the first caliper body are provided with oil inlet holes, and an installation cavity for installing brake pads is formed between the first caliper body and the second caliper body, characterized in that: an end cap is provided on one side of the first caliper body, the end cap is provided with a first heat dissipation hole vertically, a first heat dissipation structure is symmetrically provided on both sides of the end cap, and a second heat dissipation structure is provided on the connecting ears.

[0006] By adopting the above technical solution, the setting of the first heat dissipation hole, the first heat dissipation structure and the second heat dissipation structure on the connecting ear greatly improves the heat dissipation effect. The first heat dissipation hole on the end cap can dissipate internal heat, and the symmetrical first heat dissipation structure on both sides further increases the heat dissipation area and accelerates heat dissipation. The second heat dissipation structure on the connecting ear reduces the temperature of the connection part of the first caliper and the second caliper, prevents the caliper braking performance from decreasing due to high temperature, extends the service life of the caliper, and also ensures riding safety.

[0007] The aforementioned disc brake caliper can be further configured such that: the first heat dissipation structure includes second heat dissipation holes symmetrically arranged on both sides of the end cap, the second heat dissipation holes are vertically inserted into the first caliper body, and the surface of the second heat dissipation holes is provided with a plurality of oblique heat dissipation grooves, the oblique heat dissipation grooves being in communication with the second heat dissipation holes.

[0008] By adopting the above technical solution, the heat dissipation performance of the brake caliper is improved by symmetrically setting second heat dissipation holes on both sides of the end cap. The second heat dissipation holes are vertically inserted into the first caliper body to conduct internal heat, while the oblique heat dissipation grooves are connected to the heat dissipation holes, increasing the heat dissipation area, accelerating air flow, and reducing the overall weight of the caliper.

[0009] The aforementioned disc brake caliper can be further configured such that: the second heat dissipation structure includes a third heat dissipation hole vertically inserted through the connecting ear, and the surface of the third heat dissipation hole is provided with a plurality of circular heat dissipation holes, the circular heat dissipation holes communicating with the third heat dissipation hole.

[0010] By adopting the above technical solution, a third heat dissipation hole is provided vertically through the connecting ear. The third heat dissipation hole can dissipate the heat from the connection part of the first clamp body and the second clamp body. The circular heat dissipation hole is connected to the third heat dissipation hole, which accelerates the air flow and greatly improves the overall heat dissipation performance of the caliper, while ensuring the overall lightweight of the caliper.

[0011] The aforementioned disc brake caliper can be further configured such that: both the first caliper body and the second caliper body have cylinder holes for piston installation on the side facing the mounting cavity; the oil inlet hole communicates with the cylinder hole; oil entering the oil inlet hole can drive the piston to move axially within the cylinder hole; and the piston abuts against the brake pad.

[0012] Using the above technical solution, the first clamp and the second clamp have cylinder holes on the side facing the mounting cavity, and the oil inlet is connected to the cylinder hole, which causes the hydraulically driven piston to move axially, and the piston pushes the brake pads to clamp and brake the brake disc.

[0013] The aforementioned disc brake caliper can be further configured such that: the connecting ear is provided with a connecting post between the second heat dissipation hole and the third heat dissipation hole, the center of the connecting post is provided with a fixing hole for fixed connection with the outside, and the surface of the connecting post is provided with several through holes.

[0014] The above technical solution is adopted. A connecting post is provided between the second and third heat dissipation holes of the connecting ear, and a fixing hole is opened in the center of the connecting post to strengthen the connection between the caliper and the outside. Several perforations are provided on the surface of the connecting post to ensure the overall lightweight of the caliper and make the caliper braking more stable.

[0015] The aforementioned disc brake caliper can be further configured such that: a frosted block is provided on one side of the brake pad, and a receiving cavity for mounting the brake disc is formed between the frosted blocks.

[0016] By adopting the above technical solution, a grinding block is set on one side of the brake pad. The grinding block can increase the friction between the brake pad and the brake disc, greatly improving the braking effect. The cavity provides installation space for the brake disc, reducing the risk of brake failure caused by brake disc wobble or deformation.

[0017] The aforementioned disc brake caliper can be further configured such that: a connecting block is provided on one side of the first caliper body and the second caliper body; the connecting block has an installation hole for mounting on a common connecting shaft; the brake pad is sleeved on the connecting shaft; the brake pad can move axially on the connecting shaft; and a reset structure capable of resetting the brake pad is provided between the connecting shaft and the brake pad.

[0018] Using the above technical solution, a connecting block is provided on one side of the first clamp body and the second clamp body, and an installation hole for installing the connecting shaft is opened on the connecting block. The brake pad is sleeved and connected to the connecting shaft, so that the brake pad can move axially on the connecting shaft. At the same time, the piston pushes the brake pad to clamp and brake the brake disc.

[0019] The aforementioned disc brake caliper can be further configured such that: the reset structure includes a reset spring disposed between the connecting shaft and the brake pad; the reset spring includes a snap-fit ​​end that snaps into the connecting shaft; elastic abutment ends that abut against the brake are symmetrically disposed on both sides of the snap-fit ​​end; the elastic abutment ends are obliquely disposed at the snap-fit ​​end; and the brake pad abuts against and is limited by the elastic abutment ends.

[0020] By adopting the above technical solution, a return spring is set between the connecting shaft and the brake pad. The return spring is connected to the connecting shaft through a snap-fit ​​end. Abutment ends are symmetrically set on both sides of the snap-fit ​​end and obliquely set to restrict the displacement of the bottom of the brake pad. The piston pushes the upper end of the brake pad to brake. When the piston returns to its original position, the brake pad returns to its original position through elastic action.

[0021] The aforementioned disc brake caliper can be further configured such that: the connecting lug has a plurality of connecting holes axially formed, and connecting bolts are provided in the connecting holes; the first caliper body and the second caliper body are fixedly connected to the connecting holes by the connecting bolts.

[0022] Using the above technical solution, several connecting holes are opened in the connecting ear axis, and connecting bolts are used to fix the first clamp body and the second clamp body together. At the same time, the bolts and connecting holes ensure the positioning and installation between the first clamp body and the second clamp body, and enhance the stability of the installation between the first clamp body and the second clamp body.

[0023] The beneficial effects of this utility model are as follows: the setting of the first heat dissipation hole, the first heat dissipation structure and the second heat dissipation structure on the connecting ear greatly improves the heat dissipation effect, prevents the caliper braking performance from decreasing due to high temperature, extends the service life of the caliper, and also ensures riding safety. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is an exploded view of the structure of this utility model;

[0026] Figure 3 This is a structural diagram of the reset spring of this utility model;

[0027] Label annotations: 1-First clamp body, 2-Second clamp body, 3-Connecting ear, 4-Oil inlet, 5-Brake pad, 6-Mounting cavity, 7-End cap, 8-First heat dissipation hole, 9-Second heat dissipation hole, 10-Angled heat dissipation groove, 11-Third heat dissipation hole, 12-Circular heat dissipation hole, 13-Piston, 14-Cylinder bore, 15-Connecting post, 16-Fixing hole, 17-Through hole, 18-Frosted block, 19-Receiving cavity, 20-Connecting block, 21-Connecting shaft, 22-Mounting hole, 23-Return spring, 24-Snap-fit ​​end, 25-Elastic abutment end, 26-Connecting hole, 27-Connecting bolt. Detailed Implementation

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0029] like Figure 1-3 The present invention provides the following technical solution: a disc brake caliper, including a first caliper body 1 and a second caliper body 2. Both ends of the first caliper body 1 and the second caliper body 2 are provided with connecting ears 3, which are fixedly connected. Both ends of the first caliper body 1 are provided with oil inlet holes 4. An installation cavity 6 for installing brake pads 5 is formed between the first caliper body 1 and the second caliper body 2. An end cap 7 is provided on one side of the first caliper body 1. The end cap 7 has a first heat dissipation hole 8 vertically provided. First heat dissipation structures are symmetrically arranged on both sides of the end cap 7. The connecting ears 3 are provided with a second heat dissipation structure. The arrangement of the first heat dissipation hole 8, the first heat dissipation structure, and the second heat dissipation structure on the connecting ears 3 greatly improves the heat dissipation effect. The first heat dissipation hole 8 on the end cap 7 can dissipate internal heat. The symmetrical first heat dissipation structures on both sides further increase the heat dissipation area and accelerate heat dissipation. The second heat dissipation structure on the connecting ears 3 reduces the temperature at the connection point of the first caliper body 1 and the second caliper body 2, preventing a decrease in caliper braking performance due to high temperature, extending the caliper's service life, and ensuring riding safety. The heat dissipation structure includes second heat dissipation holes 9 symmetrically arranged on both sides of the end cap 7. The second heat dissipation holes 9 are perpendicularly inserted into the first caliper body 1. Several oblique heat dissipation grooves 10 are formed on the surface of the second heat dissipation holes 9, and these grooves communicate with the second heat dissipation holes 9. The symmetrical arrangement of the second heat dissipation holes 9 on both sides of the end cap 7 improves the heat dissipation performance of the brake caliper. The second heat dissipation holes 9, perpendicularly inserted into the first caliper body 1, can dissipate internal heat, while the oblique heat dissipation grooves 10, communicating with the heat dissipation holes, increase the heat dissipation area, accelerate airflow, and simultaneously reduce the overall weight of the caliper. The second heat dissipation structure includes a third heat dissipation hole 11 vertically inserted into the connecting ear 3. The surface of the third heat dissipation hole 11 is provided with a plurality of circular heat dissipation holes 12, which are connected to the third heat dissipation hole 11. The third heat dissipation hole 11 vertically inserted into the connecting ear 3 can dissipate the heat from the connection between the first clamp body 1 and the second clamp body 2. The circular heat dissipation holes 12 are connected to the third heat dissipation hole 11, which accelerates airflow and greatly improves the overall heat dissipation performance of the caliper, while ensuring the overall lightweight of the caliper.

[0030] like Figure 1-3The present invention provides the following technical solution: a disc brake caliper, wherein the first caliper body 1 and the second caliper body 2 are each provided with a cylinder hole 14 for mounting a piston 13 on the side facing the mounting cavity 6, and the oil inlet hole 4 communicates with the cylinder hole 14. Oil entering through the oil inlet hole 4 drives the piston 13 to move axially within the cylinder hole 14. The piston 13 abuts against the brake pad 5. The cylinder hole 14 on the side of the first caliper body 1 and the second caliper body 2 facing the mounting cavity 6, and the oil inlet hole 4 communicating with the cylinder hole 14, causes the hydraulically driven piston 13 to move axially, thereby pushing the brake pad 5 to clamp and brake the brake disc. The connecting lug 3 is provided with a connecting post 15 located between the second heat dissipation hole 9 and the third heat dissipation hole 11. The connecting post 15 has a fixing point at its center for fixed connection to the outside. The connecting post 15 has several through holes 17 on its surface. A connecting post 15 is located between the second heat dissipation hole 9 and the third heat dissipation hole 11 of the connecting lug 3, and a fixing hole 16 is provided in the center of the connecting post 15, strengthening the connection between the caliper and the outside. The through holes 17 on the connecting post surface ensure the overall lightweight design of the caliper, making the caliper braking more stable. A frosted block 18 is provided on one side of the brake pad 5, forming a receiving cavity 19 for installing the brake disc. The frosted block 18 increases the friction between the brake pad 5 and the brake disc, greatly improving the braking effect. The receiving cavity 19 provides installation space for the brake disc, reducing the risk of brake failure due to brake disc misalignment or deformation. The first caliper body... 1. A connecting block 20 is provided on one side of the second clamp body 2. The connecting block 20 has an installation hole 22 for mounting on the connecting shaft 21. The brake pad 5 is sleeved on the connecting shaft 21 and can move axially on the connecting shaft 21. A reset structure for resetting the brake pad 5 is provided between the connecting shaft 21 and the brake pad 5. The first clamp body 1 and the second clamp body 2 are provided on one side of the connecting block 20, and an installation hole 22 for mounting the connecting shaft 21 is provided on the connecting block 20. The brake pad 5 is sleeved and connected to the connecting shaft 21, so that the brake pad 5 can move axially on the connecting shaft 21. At the same time, the piston 13 pushes the brake pad 5 to clamp and brake the brake disc. The reset structure includes a reset spring 23 disposed between the connecting shaft 21 and the brake pad 5. 23 includes a snap-fit ​​end 24 that snaps into the connecting shaft 21. Symmetrically arranged on both sides of the snap-fit ​​end 24 are elastic abutment ends 25 that abut against the brake. The elastic abutment ends 25 are obliquely positioned on the snap-fit ​​end 24. The brake pad 5 abuts against and is limited by the elastic abutment ends 25. A return spring 23 is provided between the connecting shaft 21 and the brake pad 5. The return spring 23 is connected to the connecting shaft 21 via the snap-fit ​​end 24. The symmetrically arranged and obliquely positioned abutment ends on both sides of the snap-fit ​​end 24 limit the displacement of the bottom of the brake pad 5. The piston 13 pushes the upper end of the brake pad 5 to apply the brakes. When the piston 13 returns to its original position, the brake pad 5 returns to its original position through elasticity. The connecting lug 3 has several connecting holes 26 axially formed, and connecting bolts 27 are provided within the connecting holes 26.The first clamp body 1 and the second clamp body 2 are fixedly connected by connecting bolts 27 and connecting holes 26. A plurality of connecting holes 26 are axially formed in the connecting lug 3, and the first clamp body 1 and the second clamp body 2 are fixedly connected by connecting bolts 27. Simultaneously, the bolts and connecting holes 26 ensure the positioning and installation of the first clamp body 1 and the second clamp body 2, enhancing the stability of the installation between them.

[0031] Performance comparison data of a disc brake caliper in the embodiment:

[0032] Continuous braking condition:

[0033] The simulated vehicle was driven down a continuous slope or under frequent braking conditions, with each braking lasting 5 seconds and an interval of 10 seconds, for a total of 10 braking cycles.

[0034] Number of braking times Caliper temperature (°C) with heat dissipation structure Caliper without heat dissipation structure (°C) 1 45 48 2 55 62 3 62 75 4 68 88 5 72 95 6 75 102 7 77 108 8 79 112 9 80 115 10 81 118

[0035] (II) High-intensity braking conditions:

[0036] Set a high load and perform a high-intensity braking exercise to bring the braking system to a high temperature, then record the cooling process after braking.

[0037] 1. Temperature at the end of braking

[0038] Piston calipers: 180°C

[0039] No-hole caliper: 220℃

[0040] 2. Temperature during the cooling process (record every 1 minute)

[0041] Time (minutes) Caliper temperature (°C) with heat dissipation structure Caliper without heat dissipation structure (°C) 1 180 220 2 160 200 3 145 185 4 130 170 5 110 155 6 100 140 7 92 130 8 85 120 9 80 110 10 75 102

[0042] (III) Operating conditions at different vehicle speeds

[0043] Braking tests were conducted on a dynamometer to simulate different vehicle speeds. Braking was performed three times at each speed, and the average temperature was recorded.

[0044] Vehicle speed (km / h) Caliper temperature (°C) with heat dissipation structure Caliper without heat dissipation structure (°C) 30 50 55 60 70 85 90 95 120

[0045] The beneficial effects of this utility model are as follows: the setting of the first heat dissipation hole 8, the first heat dissipation structure and the second heat dissipation structure on the connecting ear 3 greatly improves the heat dissipation effect, prevents the caliper braking performance from decreasing due to high temperature, extends the service life of the caliper, and also ensures riding safety.

Claims

1. A disc brake caliper, comprising a first caliper body and a second caliper body, wherein both ends of the first caliper body and the second caliper body are provided with connecting ears, the first caliper body and the second caliper body are fixedly connected by the connecting ears, both ends of the first caliper body are provided with oil inlet holes, and a mounting cavity for installing brake pads is formed between the first caliper body and the second caliper body, characterized in that: The first clamp body has an end cap on one side, the end cap has a first heat dissipation hole vertically, the end cap has a first heat dissipation structure symmetrically arranged on both sides, and the connecting ear has a second heat dissipation structure.

2. A disc brake caliper according to claim 1, characterized in that: The first heat dissipation structure includes second heat dissipation holes symmetrically arranged on both sides of the end cap. The second heat dissipation holes are vertically inserted into the first clamp body. Several oblique heat dissipation grooves are formed on the surface of the second heat dissipation holes, and the oblique heat dissipation grooves communicate with the second heat dissipation holes.

3. A disc brake caliper according to claim 1, characterized in that: The second heat dissipation structure includes a third heat dissipation hole that is vertically inserted through the connecting ear. The surface of the third heat dissipation hole is provided with a plurality of circular heat dissipation holes, which are connected to the third heat dissipation hole.

4. A disc brake caliper according to claim 3, characterized in that: Both the first clamp body and the second clamp body have cylinder holes for piston installation on the side facing the mounting cavity. The oil inlet hole communicates with the cylinder hole. Oil entering through the oil inlet hole can drive the piston to move axially within the cylinder hole. The piston abuts against the brake pad.

5. A disc brake caliper according to any one of claims 1-4, characterized in that: The connecting lug is provided with a connecting post between the second heat dissipation hole and the third heat dissipation hole. The connecting post has a fixing hole in the center for fixed connection with the outside. The surface of the connecting post has several through holes.

6. A disc brake caliper according to claim 5, characterized in that: The brake pad has a frosted block on one side, and the frosted blocks form a cavity for mounting the brake disc.

7. A disc brake caliper according to claim 6, characterized in that: The first clamp body and the second clamp body are provided with a connecting block on one side. The connecting block has an installation hole for installing the connecting shaft. The brake pad is sleeved on the connecting shaft. The brake pad can move axially on the connecting shaft. A reset structure that can reset the brake pad is provided between the connecting shaft and the brake pad.

8. A disc brake caliper according to claim 7, characterized in that: The reset structure includes a reset spring disposed between the connecting shaft and the brake pad. The reset spring includes a snap-fit ​​end that snaps into the connecting shaft. On both sides of the snap-fit ​​end are symmetrically disposed elastic abutment ends that abut against the brake. The elastic abutment ends are obliquely disposed at the snap-fit ​​end. The brake pad abuts against and is limited by the elastic abutment ends.

9. A disc brake caliper according to any one of claims 1-4, characterized in that: The connecting ear has a plurality of connecting holes axially, and connecting bolts are provided in the connecting holes. The first clamp body and the second clamp body are fixedly connected to the connecting holes by the connecting bolts.

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