Automobile fixed caliper disc brake component structure convenient to maintain quickly

Abstract

The invention relates to the technical field of vehicle brake devices, in particular to an automobile fixed caliper disc brake component structure convenient to maintain quickly, which comprises a caliper body and a brake assembly, the brake assembly comprises a cushion block, a mounting frame and a brake pad, the brake pad is fixedly connected to the surface of the cushion block, the mounting frame movably sleeves the surface of the cushion block, and the mounting frame is fixedly connected to the surface of the caliper body. A connecting fixed block is fixedly connected to the surface of the inner side of the clamp body, a connecting movable block is detachably connected to the surface of the inner side of the clamp body, butt joint blocks are fixedly connected to the two sides of the mounting frame, and butt joint grooves allowing the butt joint blocks to be embedded are formed in the surfaces of the connecting fixed block and the connecting movable block in a matched mode; the invention aims to solve the problem that a large amount of time and energy need to be consumed in a field scene due to the steps of dismounting a tire, dismounting calipers and the like when a brake pad of a traditional brake is replaced.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle brake devices, in particular to a component structure of an automobile fixed-caliper disc brake which is convenient for rapid maintenance. Background Art

[0002] The fixed-caliper disc brake of an automobile is mainly composed of components such as a brake disc, a brake caliper, brake pads, a hydraulic cylinder and hydraulic pipelines. The brake disc is rigidly connected to the wheel hub and rotates with the wheel. The brake caliper spans both sides of the brake disc. The two internal hydraulic cylinders are arranged on both sides of the brake disc. The pistons in the cylinders are connected to the brake master cylinder through hydraulic oil. When the driver steps on the brake pedal, the hydraulic oil in the brake master cylinder enters the hydraulic cylinder of the brake caliper through the pipeline, pushing the pistons on both sides to move outward at the same time, so that the brake pads installed at the front end of the pistons clamp the brake disc with equal pressure, and the friction between the pads and the brake disc generates a braking torque, thereby forcing the wheel to slow down or stop. The advantage of the fixed-caliper disc brake is that the structure is simple and compact. When braking, the pads on both sides synchronously press the brake disc, the braking torque is uniform, and the response speed is fast.

[0003] In the existing technology, brake pads are wearing parts that need to be replaced regularly, but the component connection structure of traditional brakes has significant defects: replacement requires removing the tires and calipers, resulting in a cumbersome and time-consuming maintenance process and a high degree of dependence on tools. Especially in field operations and long-distance transportation scenarios, the complex component disassembly process is highly dependent on operating space and tools, seriously affecting the maintenance efficiency of the braking system. Summary of the Invention

[0004] The purpose of the present invention is to provide a vehicle fixed-caliper disc brake component structure that is easy to maintain quickly, so as to solve the problem that traditional brakes require steps such as removing tires and disassembling calipers to replace brake pads, which takes a lot of time and effort in field scenarios.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A fixed-caliper disc brake component structure for an automobile that is easy to maintain quickly includes a caliper body and a brake assembly. The brake assembly includes a pad, a mounting bracket and a brake pad. The brake pad is fixedly connected to the surface of the pad, and the mounting bracket is movably sleeved on the surface of the pad. The inner surface of the caliper body is fixedly connected to a connecting fixed block, and the inner surface of the caliper body is detachably connected to a connecting movable block. Both sides of the mounting bracket are fixedly connected to docking blocks, and the surfaces of the connecting fixed block and the connecting movable block are matched to form docking grooves for the docking blocks to be embedded.

[0007] Preferably, the upper and lower ends of the cushion block are fixedly connected to the limit slider, and the inner surface of the mounting frame is provided with a limit sliding groove for the limit slider to slide horizontally.

[0008] Preferably, a return spring is installed in the groove wall of the limiting sliding groove, one end of the return spring is fixedly connected to the groove wall of the limiting sliding groove, and the other end of the return spring abuts against the end surface of the limiting sliding block.

[0009] Preferably, a pull rod is detachably connected to the surface of the caliper body, and the pull rod is used to pull the cushion block to move outward.

[0010] Preferably, an L-shaped block is fixedly connected to the outer surface of the cushion block, and an L-shaped circular groove for hooking the L-shaped block is formed on the inner end surface of the pull rod.

[0011] Preferably, an operating groove is provided at the outer end of the pull rod.

[0012] Preferably, a through hole is provided on the side wall of the caliper body, a bolt is movably inserted into the through hole on the surface of the caliper body, and a thread groove for threaded connection of the bolt is provided on the surface of the connecting movable block.

[0013] Preferably, the opening directions of the docking grooves of the connecting fixed block and the connecting movable block are arranged opposite to each other, and the inner walls of the docking grooves are provided with a friction-reducing coating.

[0014] Preferably, the outer end surface of the docking block is provided with an arc transition surface, and the notch of the docking groove is provided with a guiding inclined surface.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The detachable connection structure connecting the movable block and the caliper body, combined with the detachable design of the docking block and docking groove, completely eliminates the cumbersome process of removing the tire and disassembling the brake caliper body when replacing brake pads in traditional fixed-caliper disc brakes. Simply disconnect the movable block and withdraw the brake assembly along the curved path inside the caliper body. This solves the technical bottleneck of traditional solutions that require long-term and cumbersome operation when replacing brake pads in complex environments such as the field, significantly improving emergency maintenance efficiency. It is particularly suitable for scenarios such as field operations and long-distance transportation where rapid maintenance is urgently needed, making brake system components convenient to maintain.

[0017] 2. Through the mechanical reset mechanism of the pull rod and the L-shaped block, the pull rod force is used to drive the pad to move in the opposite direction, forcing the piston to overcome the hydraulic resistance and return to the initial position. This helps prevent the piston from being in an extended state due to continuous compensation for the wear of the old pad after it is worn, and the direct installation of the new pad will not be able to be put into place due to insufficient space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the side view of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the clamp body of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the clamp body of the present invention in vertical section;

[0022] Figure 5 This is an effect diagram of the state in which the cushion block of the present invention is connected to the mounting frame;

[0023] Figure 6 This is a schematic diagram of the vertical cross-section of the cushion block and the mounting frame of the present invention;

[0024] Figure 7 This is a schematic structural diagram of the connecting movable block of the present invention;

[0025] Figure 8 It is a schematic structural diagram of a vertical section of the pull rod of the present invention.

[0026] In the figure: 1. Caliper body; 2. Connecting fixed block; 3. Docking groove; 4. Pull rod; 5. L-shaped circular groove; 6. L-shaped block; 7. Spacer; 8. Limit slider; 9. Return spring; 10. Limit slide groove; 11. Mounting frame; 12. Docking block; 13. Connecting movable block; 14. Threaded groove; 15. Bolt; 16. Brake pad. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1 to 8The present invention provides a technical solution: a fixed-caliper disc brake component structure for an automobile that is easy to maintain quickly, comprising a caliper body 1 and a brake assembly, the brake assembly comprising a pad 7, a mounting bracket 11 and a brake pad 16, the brake pad 16 being fixedly connected to the surface of the pad 7, the mounting bracket 11 being movably sleeved on the surface of the pad 7, the inner surface of the caliper body 1 being fixedly connected to a connecting fixed block 2, the inner surface of the caliper body 1 being detachably connected to a connecting movable block 13, docking blocks 12 being fixedly connected on both sides of the mounting bracket 11, the outer end surface of the docking block 12 being provided with a chamfered or arc transition structure, the notch of the docking groove 3 being provided with a guide slope, the surfaces of the connecting fixed block 2 and the connecting movable block 13 being cooperated with to open a docking groove for the docking block 12 to be embedded 3. The opening directions of the docking groove 3 of the connecting fixed block 2 and the connecting movable block 13 are set relative to each other, and the inner wall of the docking groove 3 is provided with a friction-reducing coating. When the brake pad 16 needs to be replaced, first release the fixation of the connecting movable block 13 and the caliper body 1, release the connection between the two, and then the connecting movable block 13 and the brake assembly can be moved along the inner side of the caliper body 1 in an arc trajectory to disengage the docking block 12 from the docking groove 3, and then the brake assembly can be pulled out from the surface of the caliper body 1, and then the pad 7 is removed from the mounting frame 11, driving the brake pad 16 to be removed as well, and then replace the new pad 7 and brake pad 16, and embed the brake assembly into the caliper body 1 in the reverse order, position it through the docking block 12 and the docking groove 3, and then fix the connecting movable block 13 to complete the replacement.

[0029] A through hole is provided on the side wall of the caliper body 1, and a bolt 15 is movably inserted into the through hole on the surface of the caliper body 1. A threaded groove 14 is provided on the surface of the connecting block 13 for threaded connection of the bolt 15, and its thread specification matches the bolt 15. When the connecting block 13 and the brake assembly are installed in place, the threaded groove 14 is aligned with the bolt 15 to form an installation path for the bolt 15. At this time, the threaded end of the bolt 15 is screwed into the threaded groove 14, and the connecting block 13 is fixed to the caliper body 1 by the axial force of the thread pair, completing the positioning and locking of the brake assembly.

[0030] The upper and lower ends of the pad 7 are fixedly connected to the limit slider 8, and the inner surface of the mounting frame 11 is provided with a limit slide 10 for the horizontal sliding of the limit slider 8. When the brake assembly is installed in place, the surface of the pad 7 contacts the piston of the disc brake. During braking, the hydraulic oil in the brake master cylinder enters the hydraulic cylinder of the brake through the pipeline, pushing the piston to extend axially. The piston thrust is transmitted to the pad 7, driving the pad 7 to move, so that the limit slider 8 slides linearly along the track of the limit slide 10. In this process, the matching surface of the limit slider 8 and the limit slide 10 limits the lateral movement of the pad 7, ensuring that it translates along the preset trajectory until the brake pad 16 presses the brake disc and braking is achieved through friction. The structure of the limit slider 8 and the limit slide 10 is specially designed for the assembly style of the pad 7 and the mounting frame 11, and the force characteristics during braking.

[0031] When the brake pad 16 is in contact with the brake disc, the piston moves axially under the hydraulic pressure, pushing the pad 7 to drive the limit slider 8 to slide along the limit slider 10 toward the brake disc. The limit slider 8 squeezes the return spring 9 to compress the stored energy until the brake pad 16 is in contact with the brake disc. When the hydraulic pressure is unloaded, the piston returns to its position, and the return spring 9 releases its elastic potential energy, pushing the limit slider 8 to slide in the opposite direction along the limit slider 10. Since the limit slider 8 is rigidly connected to the pad 7, the two are synchronously reset to the initial position, so that the brake pad 16 is separated from the brake disc, completing the unloading.

[0032] When the brake pad 16 is worn and becomes thinner, the piston extends axially due to continuous braking pressure to compensate for the thickness loss and ensure the braking effect. Therefore, after the old brake pad is removed, the piston is usually in a position where it extends more. When replacing a new pad 7, the piston needs to be reset. If the piston is not reset, there will be no installation space for the new pad 7, resulting in an inability to install. For this reason, the surface of the caliper body 1 is detachably connected to a pull rod 4, and the outer end of the pull rod 4 is provided with an operating groove. The pull rod 4 is used to pull the pad 7 outward. This outward movement refers to the direction of the principle friction disc. When the pull rod 4 pulls the pad 7 to move outward, the pad 7 will simultaneously press the piston to contract until the piston is reset to its initial state. A specific embodiment is that the outer surface of the pad 7 is fixedly connected to an L-shaped block 6, and the inner end surface of the pull rod 4 is cooperated with to open an L-shaped circular groove 5 for hooking the L-shaped block 6. The opening of the L-shaped circular groove 5 is square. The pull rod 4 is perpendicular to the axis of the pull rod 4 and is pushed axially so that the L-shaped block 6 is embedded in the horizontal groove of the L-shaped circular groove 5. The pull rod 4 is then rotated so that the bent end of the L-shaped block 6 is misaligned with the opening of the L-shaped circular groove 5. At this time, the L-shaped block 6 is locked in the L-shaped circular groove 5 and cannot be dislodged axially. Use tongs with convex jaws to clamp the tail of the pull rod 4, apply tension in the direction away from the friction disc, and drive the pad 7 to move synchronously through the L-shaped block 6. During this process, the outer surface of the pad 7 abuts the end face of the piston, forcing the piston to overcome the oil pressure in the hydraulic cylinder and retreat until it is reset to the initial position. At this time, a gap is reserved between the friction disc and the piston for installing a new brake assembly. The tension of the pull rod 4 is converted into an axial thrust of the pad 7 on the piston. The compressibility of the hydraulic system is used to return the piston to the unbraked state. At the same time, the excess hydraulic oil in the hydraulic cylinder flows back to the brake master cylinder through the pipeline to complete the reset.

[0033] The specific scheme is as follows: reset the piston, observe the mounting hole of the pull rod 4 on the outside of the caliper body 1, push the pull rod 4 axially, align the L-shaped circular groove 5 on the inner end of the pull rod 4 with the L-shaped block 6 on the outside of the pad 7, and embed the L-shaped block 6 into the L-shaped circular groove 5, rotate the pull rod 4, so that the bent end of the L-shaped block 6 is misaligned with the opening of the L-shaped circular groove 5, ensure that the L-shaped block 6 is firmly locked in the groove, clamp the tail of the pull rod 4 with tongs with convex jaws, apply tension in the direction away from the brake disc, and the tension is transmitted to the pad 7 through the L-shaped block 6. The outer surface of the pad 7 abuts the end face of the piston, forcing the piston to overcome the oil pressure in the hydraulic cylinder and retreat, and continue pulling until the piston is completely reset to the initial state. At this time, the excess hydraulic oil in the hydraulic cylinder flows back to the brake master cylinder, and an installation gap is formed between the brake disc and the piston. Rotate the pull rod 4 in the opposite direction to release the lock of the L-shaped block 6 and the L-shaped circular groove 5, and pull out the pull rod 4 axially.

[0034] Disassemble the old brake assembly, use a wrench to loosen and remove the bolts 15 on the side wall of the caliper body 1, so that the connecting block 13 is disconnected from the threaded connection with the caliper body 1, pull the connecting block 13, so that the docking block 12 is gradually disconnected from the docking groove 3 between the connecting fixed block 2 and the connecting block 13, until the entire brake assembly is pulled out from the surface of the caliper body 1, then slide the pad 7 along the direction of the limiting slide groove 10 to disengage the limiting slider 8 from the limiting slide groove 10 of the mounting bracket 11, and remove the old pad 7 and brake pad 16 assembly.

[0035] Install the new brake assembly, align the limiting slider 8 of the new pad 7 with the limiting slide groove 10 of the mounting frame 11, and push it horizontally along the slide groove. First, install the mounting frame 11 and the connecting movable block 13, and then install the mounting frame 11 and the connecting movable block 13 as a whole, so that the mounting frame 11 is docked with the connecting fixed block 2, and then fix the connecting movable block 13 with bolts 15.

[0036] There are brake pads 16 on both sides of the brake disc. The outer brake pad 16 is close to the tire, and its corresponding connecting rod 4 and bolt 15 can be operated through the spoke gap of the tire hub. The spoke gap provides a path for the tool to enter. The operator can use wrenches, tongs and other tools to complete the disassembly process on the outside of the hub, while the inner brake pad 16 can be directly operated through the bottom space of the vehicle. The operator can use special tools to complete the disassembly process from below. The core of this design lies in the integration and rapid positioning structure of the brake assembly. There is no need to disassemble the tire, the entire brake or the complex pipeline, which greatly simplifies the replacement process.

[0037] Through the above-mentioned component structure design, the present invention constructs a complete set of fixed-caliper disc brake quick maintenance component system. Its innovation focuses on the parts or components of the brake device, namely the connection parts between the brake caliper body and the brake assembly, and the structural improvement of the piston reset functional parts, providing a new component-level solution for convenient maintenance of the vehicle braking system.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle fixed-caliper disc brake component structure that is easy to maintain quickly, comprising a caliper body (1) and a brake assembly, characterized in that: The brake assembly comprises a pad (7), a mounting frame (11) and a brake pad (16), wherein the brake pad (16) is fixedly connected to the surface of the pad (7), the mounting frame (11) is movably sleeved on the surface of the pad (7), the inner surface of the caliper body (1) is fixedly connected to a connecting fixed block (2), the inner surface of the caliper body (1) is detachably connected to a connecting movable block (13), both sides of the mounting frame (11) are fixedly connected to docking blocks (12), and the surfaces of the connecting fixed block (2) and the connecting movable block (13) are both provided with docking grooves (3) for the docking blocks (12) to be embedded.

2. The automobile fixed-caliper disc brake component structure that is easy to maintain quickly according to claim 1 is characterized in that: The upper and lower ends of the cushion block (7) are fixedly connected to the limit slider (8), and the inner surface of the mounting frame (11) is provided with a limit slide groove (10) for the limit slider (8) to slide horizontally.

3. The automobile fixed-caliper disc brake component structure that is easy to maintain quickly according to claim 2, characterized in that: A return spring (9) is installed in the groove wall of the limiting slide groove (10), one end of the return spring (9) is fixedly connected to the groove wall of the limiting slide groove (10), and the other end of the return spring (9) abuts against the end surface of the limiting slider (8).

4. The automobile fixed-caliper disc brake component structure that is easy to maintain quickly according to claim 1 is characterized in that: A pull rod (4) is detachably connected to the surface of the caliper body (1), and the pull rod (4) is used to pull the cushion block (7) to move outward.

5. The automobile fixed-caliper disc brake component structure that is convenient for quick maintenance according to claim 4, characterized in that: The outer surface of the cushion block (7) is fixedly connected to an L-shaped block (6), and the inner end surface of the pull rod (4) is cooperatively provided with an L-shaped circular groove (5) for hooking the L-shaped block (6).

6. The automobile fixed-caliper disc brake component structure that is convenient for quick maintenance according to claim 4, characterized in that: An operating groove is provided at the outer end of the pull rod (4).

7. The automobile fixed-caliper disc brake component structure that is easy to maintain quickly according to claim 1, characterized in that: A through hole is provided on the side wall of the caliper body (1), a bolt (15) is movably inserted into the through hole on the surface of the caliper body (1), and a thread groove (14) for threaded connection of the bolt (15) is provided on the surface of the connecting movable block (13).

8. The automobile fixed-caliper disc brake component structure that is easy to maintain quickly according to claim 1, characterized in that: The opening directions of the docking grooves (3) of the connecting fixed block (2) and the connecting movable block (13) are arranged opposite to each other, and the inner wall of the docking groove (3) is provided with a friction-reducing coating.

9. The automobile fixed-caliper disc brake component structure that is convenient for quick maintenance according to claim 1, characterized in that: The outer end surface of the docking block (12) is provided with an arc transition surface, and the notch of the docking groove (3) is provided with a guiding inclined surface.

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