Brake caliper for a hydraulic disc brake for use on a vehicle

Abstract

Brake caliper (1) for a hydraulic disc brake, designed to enable the production of both radially and axially mounted hydraulic disc brakes for passenger cars, commercial vehicles and armored vehicles using a general forming pattern and general machining equipment, comprising the following: - an inner brake caliper half (1.1) configured to allow both radial and axial connection by machining hydraulic brake discs (1) with a radial connection; - Connection points ( 1.1.1) having an elliptical shape, which enables the machining of the inner brake caliper half (1.1) for both a radial and an axial connection from the same forming part; - rear extensions of connecting elements (1.1.6) that extend from the connecting elements (1.1.1) and structurally connect the inner brake caliper half (1.1) to the piston housings (1.1.2) and the connecting bolt extensions (1.1.3) through the forming surfaces.

Description

Technical field

[0001] The present invention relates to a brake caliper for a hydraulic disc brake for use in vehicle applications. It enables the production of both radially and axially mounted hydraulic disc brakes for passenger cars, commercial vehicles, and various armored vehicles using a general forming pattern and general machining equipment. State of the art

[0002] Brake calipers for hydraulic disc brakes are essential components of modern vehicle braking systems and are responsible for generating and transmitting braking torque to the wheels. The hydraulic braking system operates by transferring pressurized hydraulic fluid to the brake calipers in response to the driver's application of force to the brake pedal. This force is often amplified by a pressurization system, such as a brake booster or a pneumatic-hydraulic pressure booster. The resulting hydraulic pressure is transmitted to the pistons in the brake caliper, which press the brake pads against the brake disc. The contact between the brake pads and the disc creates friction, generating braking torque and reducing the wheel speed.

[0003] In current technology, mounting a radial hydraulic disc brake to an axle designed for axial mounting typically requires an additional connecting bracket and bolts. This approach necessitates a separate investment in molds and machining fixtures for the bracket and bolts, resulting in higher product costs, increased axle weight, and higher assembly and maintenance expenses.

[0004] Furthermore, radial and axial mounting systems are often designed as separate products, requiring separate investments in molds and machining equipment for each type. This leads to increased product complexity and reduced production efficiency. Currently, no hydraulic brake caliper design utilizes a general mold suitable for both radial and axial mounting configurations.

[0005] Therefore, due to the aforementioned disadvantages and inadequacy of the existing solutions on this topic, it was necessary to work on further development in the relevant technical field. Objective of the invention

[0006] The main objective of the invention is to enable the production of both radially and axially mounted hydraulic disc brakes using a general forming model and general machining equipment.

[0007] Another objective of the invention is to eliminate the need for a separate mounting bracket and the bolts required to attach the hydraulic brake to such a bracket.

[0008] A further objective of the invention is to enable the production of axial brake calipers with different connection holes, achieved through the innovative forming design of the brake caliper half, which allows for a direct axle-end connection. This design leads to significant advantages in terms of cost and weight.

[0009] The structural and functional features of the invention, as well as its advantages, are made clearer by the accompanying figures and the detailed description. Therefore, the invention should be considered in conjunction with these figures. FIGURES TO FACILITATE UNDERSTANDING THE INVENTION Fig. Figure 1 is a perspective view of the brake caliper for a hydraulic disc brake according to the invention; Fig. Figure 2 is a perspective view of the brake caliper for a hydraulic disc brake at the axle end according to the invention; Fig. 3 is a perspective front view of the forming part of the inner brake caliper half according to the invention; Fig. 4 is a perspective rear view of the forming part of the inner brake caliper half according to the invention; Fig. 5 is a front view of the forming part of the inner brake caliper half according to the invention; Fig. Figure 6 is a rear view of the forming part of the inner brake caliper half according to the invention; Fig. Figure 7 is a perspective view of the machined inner brake caliper half, which is suitable for axial connection, according to the invention; Fig. Figure 8 is a cross-sectional view of the brake caliper with axial connection according to the invention; Fig. Figure 9 is a perspective view of the inner brake caliper half, which is machined for an alternative axial connection according to the invention; Fig. Figure 10 is a cross-sectional view of the brake caliper with the alternative axial connection according to the invention; Fig. Figure 11 is a perspective view of the inner brake caliper half machined for radial connection according to the invention; Fig. Figure 12 shows a view of the radially mounted brake according to the prior art; Fig. Figure 13 shows a view of the axially mounted brake according to the prior art. REFERENCE MARK LIST 1. Hydraulic disc brake 1.1 Inner brake caliper half 1.1.1 Connection approach 1.1.2 Piston housing 1.1.3 Connecting bolt attachment 1.1.4 Stiffening 1.1.5 Connecting hole 1.1.6 Posterior extension of the connection point 1.2 Outer brake caliper half 1.3 Pistons 1.4 Seal 1.5 Brake pad 1.6 Coating pin 1.7 Brake caliper mounting bolts 1.8 Lining spring 1.9 Vent valve 1.10 Splint 2. Connecting plate 3. Connecting bolts 4. Brake disc DETAILED DESCRIPTION OF THE INVENTION

[0010] This detailed description explains the preferred configurations of the innovation in the brake caliper for a hydraulic disc brake for use in vehicles, which is the subject of the invention, to promote a better understanding of the concept.

[0011] As in Fig. As shown in Figure 2, the invention consists of a hydraulic disc brake (1), a connecting plate (2), connecting bolts (3), and a brake disc (4). The axle connection of the hydraulic disc brake (1) to the vehicle is achieved by the axle connection plate (2) and the connecting bolts (3). The hydraulic disc brake (1) comprises an inner brake caliper half (1.1), an outer brake caliper half (1.2), pistons (1.3), seals (1.4), brake pads (1.5), pad pins (1.6), brake caliper mounting bolts (1.7), pad springs (1.8), bleed valves (1.9), and cotter pins (1.10).

[0012] According to the state of the art in Fig. 12 and Fig. 13 The axle end connection of the hydraulic disc brake (1) can be radially or axially mounted, depending on the axle to which the bolts are attached. The invention relates to the forming design of a general inner brake caliper half (1.1) for both mounting types. By machining a forming of the inner brake caliper half (1.1) according to the radial and axial mounting, radially and axially mounted hydraulic disc brakes (1) are obtained. For machining, the inner brake caliper halves (1.1), which are suitable for both radial and axial connection, are formed from the same forming, and elliptically shaped connecting projections (1.1.1) and rear extensions of connecting projections (1.1.6) are positioned on the front and rear surfaces of the inner brake caliper half.

[0013] The aforementioned connecting elements (1.1.1) and the rear extensions of connecting elements (1.1.6) are integrated into the inner brake caliper half (1.1) by means of shaped surfaces that support the piston housing (1.1.2) and connecting bolt extensions (1.1.3). A prismatic stiffener (1.1.4) exists between the connecting elements (1.1.1) and the connecting bolt extensions (1.1.3), widening towards the connecting elements (1.1.1). This stiffener (1.1.4) reduces stresses in the connection area under braking load. Furthermore, it prevents uneven or deviations in the wear of the brake pads (1.5) by increasing the brake caliper stiffness. The connecting holes (1.1.5), which are positioned on the axle end plate on the brake caliper, can be moved up and down during machining changes thanks to the elliptical shape of the connecting lugs (1.1.1). This gives the product flexibility for different vehicle applications.

[0014] As in Fig. As shown in Figure 8, there is an axially fixed axle end configuration with screw threads on the axle end connection plate (2). The axle end connection plate (2) is positioned closer to the center plane of the brake. For axially fixed axle end configurations where the axle end connection plate (2) does not have screw thread holes, the screw thread must be positioned on the inner brake caliper half, as shown in Figure 8. Fig. 10 is shown. In this context, the rear extensions of the connecting elements (1.1.6) positioned behind the connecting elements (1.1.1) extend to the inner side where the brake pads (1.5) are positioned in the forming model of the inner brake caliper half (1.1).

[0015] Since the forming model of the inner brake caliper half (1.1) is general, no additional investment in forming models and machining fixtures for different radially and axially mounted inner brake caliper halves is required. Furthermore, the need for mounting brackets and fastening components for connecting the brake to axle end plates with an axial connection interface is eliminated. This results in advantages in terms of production costs, axle weight, assembly, and maintenance processes. Thanks to the invention, compared to the prior art with the in Fig. The mounting brackets shown in Figure 12 offer a weight advantage of up to 1.9 kg per axle end (15%). Furthermore, compared to the axially connected prior art as shown in Figure 12, the weight advantage is reduced by up to 1.9 kg per axle end (15%). Fig. 13 achieved a weight reduction of up to 6.7 kg per axle end (38%).

Claims

[1] Brake caliper (1) for a hydraulic disc brake, designed to enable the production of both radially and axially mounted hydraulic disc brakes for passenger cars, commercial vehicles and armored vehicles using a general forming pattern and general machining equipment, comprising the following: - an inner brake caliper half (1.1) configured to allow both radial and axial connection by machining hydraulic brake discs (1) with a radial connection; - Connection points ( 1.1.1) having an elliptical shape, which enables the machining of the inner brake caliper half (1.1) for both a radial and an axial connection from the same forming part; - rear extensions of connecting elements (1.1.6) that extend from the connecting elements (1.1.1) and structurally connect the inner brake caliper half (1.1) to the piston housings (1.1.2) and the connecting bolt extensions (1.1.3) through the forming surfaces. [2] Brake caliper (1) for a hydraulic disc brake according to claim 1, characterized by , that: - the connection points (1.1.1) and the rear extensions of connection points (1.1.6) include stiffeners (1.1.4) configured to reduce stresses in the connection area under braking load. [3] Brake caliper (1) for a hydraulic disc brake according to claim 1, characterized by , that: - the connecting prongs (1.1.1) and the rear extensions of connecting prongs (1.1.6) comprise connecting holes (1.1.5), wherein the vertical position of the connecting holes (1.1.5) can be adjusted by machining, made possible by the elliptical shape of the connecting prongs (1.1.1) and the rear extensions of connecting prongs (1.1.6), thus providing flexibility for various vehicle applications.

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