Testing device for electronic drive-by-wire brake unit

Abstract

The utility model discloses a testing device for an electronic brake-by-wire unit, and relates to the technical field of automobile manufacturing. The brake device comprises an electric push rod, an electronic line control brake unit, brake calipers and a support. The electric push rod, the electronic drive-by-wire brake unit and the brake calipers are fixedly installed on the support, and the electric push rod and the electronic drive-by-wire brake unit are detachably connected through a universal joint coupler. A grating ruler for detecting the displacement of a telescopic rod of the electric push rod is mounted on one side of the electric push rod; and a pressure sensor for detecting the pressure applied by the electric push rod is arranged between the electric push rod and the universal joint coupler. According to the utility model, the electric push rod and the electronic brake-by-wire unit are detachably connected through the universal joint coupling, and are supported and fixed by the aluminum profile bracket, so that the debugging requirement of the electronic brake-by-wire unit of the automobile is met, the structure is simple, and the expansibility is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile manufacturing, and particularly relates to a testing device for an electronic wire-controlled brake unit. Background Art

[0002] Automotive electronic brake-by-wire controls detect various dynamic parameters of the vehicle through sensors, and then use an electronic control unit (ECU) to adjust the vehicle's braking force in real time to improve driving safety and give the vehicle better handling and braking performance.

[0003] Since the braking of a car is a key indicator of its safety performance, in order to ensure the safe and reliable use of the wire-controlled brake unit, it is necessary to conduct multi-faceted tests on the system performance, positive input torque, reverse thrust, input and output characteristics, and durability of the wire-controlled brake unit.

[0004] For example, the Chinese utility model patent with publication number CN213874971U discloses an integrated brake-by-wire system performance tester, which includes a frame, a rotating fixture mechanism, a displacement pressure detection mechanism, an angle torque detection mechanism, an upper guard cover, a display, an electrical cabinet, an uninterruptible power supply and an industrial computer, and realizes the detection of product-related performance through an integrated structure.

[0005] However, the test and calibration structures used in the test machine and the currently available automotive electronic wire-controlled brake unit test devices are expensive, complex, single-function, and have low scalability, making it difficult to meet the test and use requirements in the early development of electronic wire-controlled brake units. Utility Model Content

[0006] The purpose of the utility model is to provide a testing device for an electronic wire-controlled brake unit, which meets the demand for debugging an automotive electronic wire-controlled brake unit by detachably connecting an electric push rod and the electronic wire-controlled brake unit through a universal joint coupling and adopts a bracket to support and fix the electric push rod and the electronic wire-controlled brake unit. The utility model has a simple structure and good expansibility, and solves the problem that the existing electronic wire-controlled brake unit testing device has high cost, complex structure, single function, and low expansibility, and is difficult to meet the test and use requirements in the early development of the electronic wire-controlled brake unit.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a testing device for an electronic wire-controlled brake unit, comprising an electric push rod, an electronic wire-controlled brake unit, a brake caliper and a bracket;

[0009] The electric push rod, the electronic wire control brake unit and the brake caliper are all fixedly mounted on the bracket, the electric push rod and the electronic wire control brake unit are detachably connected via a universal joint coupling, and the electronic wire control brake unit and the brake caliper are connected via a brake pipeline;

[0010] A grating ruler for detecting the displacement of the telescopic rod of the electric push rod is installed on one side of the electric push rod;

[0011] A pressure sensor for detecting the pressure applied by the electric push rod is installed between the electric push rod and the universal joint coupling.

[0012] As a preferred technical solution of the utility model, the bracket includes a first support frame, a second support frame and a base frame, the first support frame and the second support frame are fixedly mounted on the base frame, the electric push rod is fixedly mounted on the first support frame, the electronic wire control brake unit is fixedly mounted on the second support frame, and the brake caliper is fixedly mounted on the base frame.

[0013] As a preferred technical solution of the present utility model, the first support frame, the second support frame and the base frame adopt a frame structure formed by splicing aluminum profiles.

[0014] As a preferred technical solution of the present utility model, the universal joint coupling adopts a telescopic universal joint coupling.

[0015] As a preferred technical solution of the utility model, one end of the universal joint coupling is connected to the electronic wire control brake unit through a first transmission shaft and a flat key;

[0016] The other end of the universal joint coupling is connected to the pressure sensor through a second transmission shaft and a flat key.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model meets the demand for debugging the electronic wire-controlled brake unit of an automobile by detachably connecting the electric push rod and the electronic wire-controlled brake unit through a universal joint coupling and adopts a bracket to support and fix them, and has a simple structure and good expansibility.

[0019] 2. The bracket of the utility model adopts a frame structure formed by splicing aluminum profiles, which is cheap, has high expansibility and is easy to disassemble.

[0020] 3. The utility model can detect the real-time pressure and displacement applied to the electronic wire-controlled brake unit by setting a pressure sensor and a grating ruler. The power source servo electric cylinder can also be disassembled and replaced with a pedal, which is manually driven and restored to the actual use in a one-to-one ratio.

[0021] 4. The utility model can be used to calibrate the pedal displacement sensor while detecting the automobile electronic wire-controlled brake unit.

[0022] 5. The utility model adopts a telescopic universal joint coupling to connect the electric push rod and the electronic wire-controlled brake unit, which can effectively compensate for the dimensional error caused by the entire structural installation process, reduce the installation accuracy requirements, and ensure that the detection accuracy during use meets the requirements, effectively reducing costs.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a structural schematic diagram of a testing and calibration device for an electronic wire-controlled brake unit of the utility model;

[0026] Figure 2 It is a structural schematic diagram of another perspective of the testing and calibration device for an electronic wire-controlled brake unit of the utility model;

[0027] Figure 3 It is a schematic diagram of the connection structure of the universal joint coupling;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1-electric push rod, 2-grating ruler, 3-universal joint coupling, 4-pressure sensor, 5-first transmission shaft, 6-second transmission shaft, 7-brake caliper, 8-brake pipeline, 9-electronic wire control brake unit, 10-first support frame, 11-second support frame, 12-base frame, 13-flat key. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be understood that terms such as "end", "upper", "lower", "side", "top", "bottom", "length", "inside", and "surface" indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present invention.

[0032] At present, the test and calibration structures used in the existing automotive electronic wire-controlled brake unit test devices are expensive, complex, single-function, and have low scalability. In the early development stage of the electronic wire-controlled brake unit, it is necessary to frequently disassemble and reassemble the test. This type of test device is difficult to meet the test and use requirements in the early development stage. Based on this, the present embodiment provides a test device for an electronic wire-controlled brake unit. The device has many advantages such as simple structure, easy disassembly, good scalability, and low cost.

[0033] See also Figure 1 and Figure 2 As shown, the testing and calibration device for the electronic wire-controlled brake unit includes an electric push rod 1, an electronic wire-controlled brake unit 9, two brake calipers 7 and a bracket.

[0034] The bracket is made of aluminum profiles spliced ​​by corner brackets, with a simple structure and easy expansion. Specifically, the bracket includes a first support frame 10, a second support frame 11 and a base frame 12. The first support frame 10 and the second support frame 11 are fixedly mounted on the base frame 12, the electric push rod 1 is fixedly mounted on the first support frame 10, the electronic wire control brake unit 9 is fixedly mounted on the second support frame 11, and the brake caliper 7 is fixedly mounted on the base frame 12. The first support frame 10 and the second support frame 11 are both installed with support plates to better fix the electric push rod 1 and the electronic wire control brake unit 9.

[0035] During installation, the electric push rod 1 is fixed on the first support frame 10, a pressure sensor 4 is installed at the telescopic end of the electric push rod 1, and a grating ruler 2 is installed on one side of the electric push rod 1. The pressure sensor 4 is used to detect the pressure applied by the electric push rod 1, and the grating ruler 2 detects the displacement of the telescopic rod of the electric push rod 1. Then the brake caliper 7 is fixed on the base frame 12, and the electronic wire control braking unit 9 to be tested and calibrated is installed on the second support frame 11. Subsequently, the electronic wire control braking unit 9 is connected to the brake caliper 7 through the brake pipeline 8. Next, the electric push rod 1 and the electronic wire control braking unit 9 are connected through the universal joint coupling 3.

[0036] Specifically, Figure 3As shown, one end of the universal joint coupling 3 is connected to the electronic wire control brake unit 9 through the first transmission shaft 5 and the flat key 13; the other end of the universal joint coupling 3 is connected to the pressure sensor 4 through the second transmission shaft 6 and the flat key 13.

[0037] Among them, the universal joint coupling 3 preferably adopts a telescopic universal joint coupling, which can effectively compensate for the dimensional error caused by the entire structural installation process, reduce the installation accuracy requirements, and ensure that the detection accuracy during use meets the requirements, effectively reducing costs.

[0038] The debugging actions of the electronic wire control brake unit 9 in this embodiment are as follows:

[0039] Initially, the electric push rod 1 is given a displacement, which is transmitted to the electronic wire control brake unit 9 through the universal joint coupling 3. The internal hydraulic pipeline generates pressure, and the two brake calipers 7 are clamped through the brake pipeline 8. Thus, the positive input torque, reverse thrust, input-output characteristics and other parameter indicators of the electronic wire control brake unit 9 are obtained through the pressure sensor 4 and the grating ruler 2.

[0040] In a possible implementation of this embodiment, the power source electric push rod 1 can also be disassembled and replaced with a pedal, which is driven by manpower and restored to the actual use in a one-to-one ratio. While the electronic wire control brake unit 9 is being made, it can also be used to calibrate the pedal displacement sensor.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A test device for an electronic brake-by-wire unit, characterized in that: It comprises an electric push rod (1), an electronic wire-controlled brake unit (9), a brake caliper (7) and a bracket; The electric push rod (1), the electronic wire control braking unit (9) and the brake caliper (7) are all fixedly mounted on a bracket; the electric push rod (1) and the electronic wire control braking unit (9) are detachably connected via a universal joint coupling (3); and the electronic wire control braking unit (9) and the brake caliper (7) are connected via a brake pipeline (8); A grating ruler (2) for detecting the displacement of the telescopic rod of the electric push rod (1) is installed on one side of the electric push rod (1); A pressure sensor (4) for detecting the magnitude of the pressure applied by the electric push rod (1) is installed between the electric push rod (1) and the universal joint coupling (3).

2. A test device for an electronic brake-by-wire unit according to claim 1, characterized in that: The bracket comprises a first support frame (10), a second support frame (11) and a base frame (12); the first support frame (10) and the second support frame (11) are fixedly mounted on the base frame (12); the electric push rod (1) is fixedly mounted on the first support frame (10); the electronic wire control brake unit (9) is fixedly mounted on the second support frame (11); and the brake caliper (7) is fixedly mounted on the base frame (12).

3. A test device for an electronic brake-by-wire unit according to claim 2, characterized in that: The first support frame (10), the second support frame (11) and the base frame (12) are formed into a frame structure by splicing aluminum profiles.

4. A test device for an electronic brake-by-wire unit according to claim 2, characterized in that: The universal joint coupling (3) is a telescopic universal joint coupling.

5. A test device for an electronic brake-by-wire unit according to claim 4, characterized in that: One end of the universal joint coupling (3) is connected to the electronic wire control brake unit (9) via a first transmission shaft (5) and a flat key (13); The other end of the universal joint coupling (3) is connected to the pressure sensor (4) via a second transmission shaft (6) and a flat key (13).

Images