Wheel end balanced disc type EPB

Abstract

The utility model discloses a wheel end balance type disc EPB, which belongs to the technical field of automobile engineering and comprises a hub mounting flange, a brake disc and a connecting seat, the upper end face of the hub mounting flange is fixedly connected with the lower end face of a connecting sleeve, and the lower end face of the brake disc is fixedly connected with the upper end face of the connecting sleeve. The connecting sleeve is rotatably connected with the lower end of the connecting seat, two groups of disc-type EPBs are arranged on the outer side of the connecting sleeve in a balanced manner, and the disc-type EPBs are fixedly connected with the mounting plate. By means of the mode, the disc type EPB is distributed in the circumferential direction of the connecting sleeve in a balanced mode, stress of the wheel end component is more reasonable in the braking process, a parking instruction is sent out through the controller when a hydraulic source is adopted for driving and parking during service braking, and the parking function is achieved. In addition, when the service brake is abnormal in braking and cannot perform safe braking, the controller can intervene in sending out an instruction, and braking is completed through the EPB effect; and on the premise of guaranteeing safety, the braking efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive engineering technology, specifically to a wheel-end balancing disc EPB. Background Technology

[0002] With the guidance of national policies, the introduction of relevant laws and regulations, and continuous technological breakthroughs and innovations, the market share of new energy light trucks has increased significantly, especially for urban logistics vehicles. These vehicles operate in good condition, and overloading and exceeding limits are strictly controlled. In particular, due to various factors such as restrictions on 4.5T blue-plate vehicles and the commercial purpose of vehicles, vehicle overloading will be effectively curbed. In order to meet the needs of blue-plate and multi-load requirements, the lighter the vehicle's curb weight, the better.

[0003] The above market environment, for commercial vehicle braking systems, mainly means that the braking system no longer needs to provide excessive braking torque, because previous vehicles had extremely high safety margins in their braking systems designed to accommodate overload. Hydraulic braking systems of the same specifications have about one-third weaker braking torque than pneumatic braking systems, but their weight is one-sixth or even less than conventional systems. Therefore, more and more light commercial vehicles are adopting hydraulic braking systems.

[0004] Hydraulic disc brakes, when used in light vehicles, employ a dual-cylinder configuration to meet braking torque requirements. Due to their unique braking structure, the brake only operates at about 1 / 3 of the brake disc during braking. This inevitably leads to torque on the brake wheel end during braking, affecting the lifespan of the wheel end braking structure and posing other functional risks to the disc brake. Hydraulic disc brakes can also experience abnormal malfunctions such as brake failure, endangering vehicle braking safety.

[0005] Meanwhile, due to the limitations of existing technical solutions, light commercial vehicles generally use a combination of wheel-end service brakes and central driveshaft parking brakes. However, due to space constraints at the central driveshaft and multi-stage transmission, larger tonnage vehicles often experience parking weakness and rollback on steep inclines (over 20%). Currently, the common solution is to add a manual anti-rollback device to the rear wheels after parking to improve parking safety, which is time-consuming, laborious, and not very effective.

[0006] Based on this, the present invention designs a wheel-end balanced disc EPB to solve the above problems. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a wheel-end balanced disc EPB.

[0008] The technical solution adopted to solve the above technical problems is:

[0009] The wheel-end balanced disc EPB includes a hub mounting flange, wherein the upper end face of the hub mounting flange is fixedly connected to the lower end face of the connecting sleeve.

[0010] It also includes a brake disc, the lower end face of which is fixedly connected to the upper end face of the connecting sleeve;

[0011] It also includes a connecting seat, and the connecting sleeve is rotatably connected to the lower end of the connecting seat;

[0012] It also includes a mounting plate, which is fixedly mounted on the outer wall of the middle part of the connecting seat;

[0013] It also includes a disc-type EPB, which has two sets of balanced layout on the outside of the connecting sleeve, and the disc-type EPB is fixedly connected to the mounting plate.

[0014] The above technical solution balances the disc EPB in the circumferential direction of the connecting sleeve, making the force on the wheel end components more reasonable during braking.

[0015] Furthermore, it also includes a controller (ECU), which is fixedly mounted on the front side of the upper end of the connector and is electrically connected to two sets of disc-type EPBs.

[0016] The above technical solution integrates electronic parking brake functionality, which can simultaneously achieve parking at all four wheel ends (front / rear axle) through the controller (ECU) without eliminating the existing central parking brake. Then, through the vehicle software control controller (ECU), the driving and parking forces at the four wheel ends can be controlled individually, better distributing the braking ratio when the vehicle is in motion. In addition, in the event of a sudden situation (slippage, deviation, fishtailing, etc.), the software control can be triggered for autonomous control.

[0017] Furthermore, the brake disc is a heat-dissipating brake disc.

[0018] Through the above technical solutions, the brake disc can dissipate heat more effectively, enabling it to maintain a relatively stable coefficient of friction even in high-temperature environments, ensuring stable braking performance and effectively avoiding safety hazards caused by brake fade.

[0019] Furthermore, the disc-type EPB has two or more sets.

[0020] The above technical solution, through the balanced layout of two or more disc EPBs, avoids excessive brake disc end face runout caused by the small clamping area of ​​a single disc EPB during braking, which would lead to force deviation from the rotation axis of the wheel hub mounting flange and connecting sleeve, thus affecting braking safety and the stability of braking components.

[0021] The beneficial effects of this utility model are as follows: (1) The wheel-end balanced disc EPB makes the force on the wheel-end components more reasonable during braking by balancing the disc EPB in the circumferential direction of the brake disc. It can effectively solve the problem of unbalanced force on the wheel-end components caused by the current disc EPB layout in the braking process due to the need to overcome the braking torque. It can effectively reduce the end face runout of the wheel-end rotating components, especially the brake disc, and ensure that the rotating components are not affected by the disc EPB braking after the disc EPB contacts the brake. (2) The integrated electronic parking function can realize the synchronous parking of four wheel ends (front / rear axle) through the controller (ECU) on the basis of eliminating the existing central parking brake. Then, the whole vehicle software controls the controller (ECU). It can independently control the driving and parking forces at the four wheel ends, better distribute the braking ratio when the vehicle is driving, and in the event of a sudden situation (slippage, deviation, tail swing, etc.), it can trigger software control for autonomous control, especially providing an irreplaceable hardware foundation for subsequent L3 level and above autonomous driving; (3) When driving, a hydraulic source is used for driving, and when parking, a parking command is issued through the controller to realize the parking function. In addition, when the driving brake is abnormal and cannot brake safely, the controller can intervene and issue a command to complete the braking through the EPB action; under the premise of ensuring safety, the braking efficiency is improved, and in an emergency, the controller (ECU) can control two sets of disc EPB to brake simultaneously to make the vehicle brake stably. Attached Figure Description

[0022] Figure 1 This utility model provides a three-dimensional wheel-end balancing disc EPB. Figure 1 ;

[0023] Figure 2 This is a front view of the wheel-end balancing disc EPB of this utility model;

[0024] Figure 3 This utility model provides a three-dimensional wheel-end balancing disc EPB. Figure 2 .

[0025] Reference numerals:

[0026] 1. Wheel hub mounting flange; 2. Brake disc; 3. Connecting sleeve; 4. Mounting plate; 5. Connecting seat; 6. Disc EPB; 7. Controller (ECU). Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0029] Example 1: In some embodiments, please refer to the accompanying drawings. Figure 1-Figure 3 The wheel-end balanced disc EPB includes a hub mounting flange 1, the upper end face of which is fixedly connected to the lower end face of the connecting sleeve 3.

[0030] It also includes a brake disc 2, the lower end face of which is fixedly connected to the upper end face of the connecting sleeve 3;

[0031] It also includes a connecting seat 5, and the connecting sleeve 3 is rotatably connected to the lower end of the connecting seat 5;

[0032] It also includes a mounting plate 4, which is fixedly installed on the outer wall of the middle part of the connecting seat 5;

[0033] It also includes the disc-type EPB6, which has two sets of balanced layout on the outside of the connecting sleeve 3, and the disc-type EPB6 is fixedly connected to the mounting plate 4.

[0034] It also includes a controller (ECU) 7, which is fixedly mounted on the front side of the upper end of the connector 5. The controller (ECU) 7 is electrically connected to two sets of disc brakes EPB6. The brake disc 2 is a heat-dissipating brake disc.

[0035] The disc-type EPB6 has two or more sets.

[0036] In use, the wheel hub mounting flange 1, brake disc 2, and connecting sleeve 3 are connected to form a rotating component synchronized with the wheel. The mounting plate 4, connecting seat 5, disc EPB6, and controller (ECU) 7 are connected and fixed to the axle components to form a non-rotating component. The disc EPB6 is evenly distributed around the periphery of the brake disc 2. Before braking, the wheel hub mounting flange 1, brake disc 2, and connecting sleeve 3 rotate synchronously. During braking, the controller (ECU) 7 receives a braking signal and controls the disc EPB6. The brake pads of the disc EPB6 clamp the brake disc 2, generating a braking torque that stops the rotating component from rotating, thus stopping the vehicle. After the brake is released, the brake pads of the disc EPB6 disengage from the brake disc 2.

[0037] By using a balanced layout of two or more disc EPB6 brake pads, excessive force on the brake disc 2 end face can be avoided due to the small clamping area of ​​a single disc EPB6 during braking. This prevents the brake disc 2 from experiencing excessive runout and avoids force misalignment between the brake disc 2 and the rotation axis of the wheel hub mounting flange 1 and connecting sleeve 3, which would affect braking safety and the stability of the braking components. The balanced layout of two or more disc EPB6 brake pads increases the contact area between the brake pads and the brake disc 2, enhancing the stability of the braking components. During service braking, a hydraulic power source is used for actuation; during parking, a parking command is issued by the controller to achieve the parking function. Furthermore, when the service brake malfunctions and cannot brake safely, the controller can intervene and issue a command to complete braking through the EPB. This improves braking efficiency while ensuring safety, and in emergencies, the controller (ECU) can control two sets of disc EPBs to brake simultaneously, ensuring stable braking of the vehicle.

[0038] Furthermore, when the vehicle executes the parking command, all four wheels can be parked simultaneously. Depending on the vehicle's tonnage and parking slope angle, the vehicle can be calibrated to achieve simultaneous parking of four or two wheels. Especially for the control of energy consumption and vehicle weight of new energy vehicles, while eliminating the central parking brake, the size of the disc EPB6 can be further reduced. Under the premise of meeting the requirements of lightweighting and braking safety, the integration and intelligent development of vehicle braking is further realized.

[0039] The controller (ECU) 7 is located at the wheel, frame, or cab. The controller (ECU) 7 can integrate the control of individual wheel, axle, and the whole vehicle.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. The above description is merely an embodiment of the present utility model and is not intended to limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A wheel-end balanced disc EPB, including a hub mounting flange (1), characterized in that: The upper end face of the hub mounting flange (1) is fixedly connected to the lower end face of the connecting sleeve (3); It also includes a brake disc (2), the lower end face of which is fixedly connected to the upper end face of the connecting sleeve (3); It also includes a connecting seat (5), and the connecting sleeve (3) is rotatably connected to the lower end of the connecting seat (5); It also includes a mounting plate (4), which is fixedly mounted on the middle outer side wall of the connecting seat (5); It also includes a disc-type EPB (6), which has two sets of balanced layout on the outside of the connecting sleeve (3), and the disc-type EPB (6) is fixedly connected to the mounting plate (4).

2. The wheel-end balanced disc EPB according to claim 1, characterized in that, It also includes a controller (ECU) (7), which is fixedly mounted on the front side of the upper end of the connector (5), and the controller (ECU) (7) is electrically connected to two sets of disc EPB (6).

3. The wheel-end balanced disc EPB according to claim 2, characterized in that, The brake disc (2) is a heat-dissipating brake disc.

4. The wheel-end balanced disc EPB according to claim 3, characterized in that, The disc-type EPB(6) has two or more sets.

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