CN205311348U - A six step motor formula combination meter for EQ140 -2 automobile body - Google Patents

Abstract

The utility model discloses a six step motor formula combination meter for EQ140 -2 automobile body, including the casing, two regions about the casing divides into, the branch maybe first area of occurrence and the second area of occurrence that links to each other with first area of occurrence, two parts about first area of occurrence divide into, top from left to right is provided with barometer, oil pressure gauge respectively, the below of barometer, oil pressure gauge is provided with voltmeter, trouble status light area of occurrence respectively, the second area of occurrence from left to right is provided with speedometer and engine speed respectively, the fuel level gauge is located the speedometer under, the temperature epitope is under engine tachometer, centre at fuel level gauge and speedometer, engine tachometer and temperature table is provided with button and display screen respectively toward lower region, and the display screen is used for showing the automobile information of going, the button is used for cooperating with the display screen, wherein engine tachometer, speedometer, fuel level gauge, temperature table, oil pressure gauge, voltmeter adopt step motor drive pointer to show.

Description

A six-step motor type combination meter for EQ140-2 body

technical field

The utility model relates to an instrument for an automobile, in particular to a six-step motor type combined instrument used for a common EQ140-2 body.

Background technique

Automobile instruments are composed of various instruments and indicators, especially warning lights and alarms for drivers, etc., which provide the driver with the required information on the operating parameters of the car, and are an important window and interface for the driver to communicate with the car. Safe and economical driving plays an important role. With the development of modern automobile industry and electronic technology, various systems and mechanisms in automobiles are becoming more and more complex, the amount of information on the working conditions of the automobile industry and various parts has increased significantly, and the layout of various information on complex automobile dashboards is unreasonable It often causes the driver to ignore or misunderstand, or even fail to understand some symbols. Secondly, with the use of various electronic control devices in automobiles, modern automobiles require that the instrument panel can quickly and accurately display various information in the form of numbers and sounds for the driver to observe and refer to, which requires the automobile instrument to have High reliability and stability. At present, Dongfeng E1140-2 bodies generally use mechanical instruments, which are not only bulky, but also the internal pointer deflection is easily disturbed by magnetic fields, resulting in unstable display.

Utility model content

In order to solve the above technical problems, the utility model proposes a six-step motor type combination instrument for the EQ140-2 body.

The technical scheme of the utility model is:

A six-step-motor-type combined meter for the body of EQ140-2, including a casing, which is divided into two areas, the left and the right, which are respectively the first display area and the second display area connected to the first display area;

The first display area is divided into upper and lower parts. The upper part is respectively provided with air pressure gauge and oil pressure gauge from left to right. The air pressure gauge and oil pressure gauge occupy 2/3 of the entire first display area; There are voltmeter and fault status light display area at the bottom respectively;

The second display area is respectively provided with speedometer and engine speed from left to right; the fuel gauge is located directly below the speedometer; the water temperature gauge is located directly below the engine speedometer; There are buttons and display screens in the middle and lower areas of the table respectively. The display screen is used to display the driving information of the car; The voltmeter is displayed by a stepper motor driven pointer;

The back of the housing is provided with a wire harness interface, which is connected to the wire harness on the car through the wire harness interface to transmit various information of the car to the dashboard.

Further, the four corners of the second display area are provided with vehicle turn signal lamps.

The utility model has the advantages that: the information layout of the instrument panel is symmetrical, humanized and aesthetically pleasing; the information layout of the instrument panel is reasonable, the display area of the vehicle speed display panel is large, and it is located in the center of the entire instrument, which is easy to be noticed by the driver all the time. The pointer of the instrument is driven by a stepper motor, and the high-performance automotive-grade MCU is used to obtain information such as vehicle speed, vehicle speed, oil volume, water temperature, oil pressure, voltage, etc. from relevant sensors, and six stepper motors are driven to accurately display the information. It shows high stability and reliability.

Description of drawings

Fig. 1 is the schematic diagram of the utility model;

Fig. 2 is the back view of Fig. 1;

Fig. 3 is the stepper motor drive circuit diagram that speedometer involves;

Fig. 4 is the stepper motor drive circuit diagram that tachometer involves;

Fig. 5 is a stepper motor drive circuit diagram related to the oil pressure gauge;

Fig. 6 is a stepper motor drive circuit diagram involved in the fuel gauge;

The reference signs are as follows: 1. Housing; 2. First display area; 21. Barometer; 22. Oil pressure gauge; 23. Voltmeter; 24. Fault status light display area; 3. Second display area; 31. Fuel gauge and speedometer; 311, speedometer; 312, fuel gauge; 32, engine tachometer and water temperature gauge; 321, engine tachometer; 322, water temperature gauge; 33, buttons; 34, display screen; 4, wiring harness interface.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in combination with illustrations and specific embodiments.

As shown in Figures 1 and 2, a six-step motor combination instrument for the EQ140-2 body includes a housing 1, and instrument mounting holes are provided at the four corners of the housing 1, through which the instrument panel is mounted. Fixed on the body panel. The casing 1 is divided into left and right areas, the left one is a first display area 2 , and the right second display area 3 is connected to the first display area 2 .

Wherein the first display area 2 is divided into upper and lower parts, and the upper part is provided with an air pressure gauge 21 and an oil pressure gauge 22 side by side. The air pressure gauge 21 and the oil pressure gauge 22 account for 2/3 of the entire first display area 2; the oil pressure gauge 22 It is used to display the current engine oil pressure, which is important information during driving. Therefore, a larger display area is arranged, displayed on the left side of the speedometer, and the range is 0-12KPa; the barometer 21 and the oil pressure gauge 22 are respectively set below There are voltmeter 23 and fault status light display area 24; voltmeter 23 shows the voltage of the current accumulator battery, and the range is 16-32V, because this information is not often seen in the driver's driving process, it is located at the lower left side of the instrument. The fault status lamp display area 24 is used to indicate the relevant fault and status information of the whole automobile, and there are up to 34 status and fault lamps.

The second display area 3 is respectively provided with a fuel gauge and a speedometer 31, an engine tachometer and a water temperature gauge 32 in a circular shape from left to right, wherein the top of the fuel gauge and the speedometer 31 is a speedometer 311, the speedometer 311 occupies a large display area and is located in the center of the display panel for real-time display of the current vehicle speed, which is the information that drivers are most concerned about. The vehicle speed can be displayed in the range of 0-140km/h, and the error of the pointer display of the stepping motor can reach within 1%. The fuel level gauge 312 is used to display the current oil level of the fuel tank, which is information that is more concerned during driving, and is located directly below the speedometer 311; above the engine tachometer and water temperature gauge 32 is the engine tachometer 321, which is located in the combination The right side of the instrument display area is a reference for the driver to start and shift gears, and the speed display range is 0-3500 rpm. The water temperature gauge 322 is used to display the current temperature of the coolant, and also indicates the temperature of the engine. It is information that is more concerned during driving and is located directly below the engine speed gauge 321 . A button 33 and a display screen 34 are respectively arranged in the lower area in the middle of the fuel gauge and the speedometer 31, the engine tachometer and the water temperature gauge 32, and the display screen 34 is used to display information such as time and mileage; the button 33 is mainly used to communicate with With the cooperation of the display screen, it is used to set the time, speed ratio, mileage and other information. The four corners of the second display area 3 are also provided with automobile turn signal lamps.

The back of the casing 1 is provided with a wiring harness interface 4, which can facilitate wiring, disassembly and maintenance. Connect with the wire harness on the car through the wire harness interface 4, and transmit various information of the car to the dashboard.

In this combined instrument, the engine tachometer, speedometer, fuel gauge, water temperature gauge, oil pressure gauge, and voltmeter are all displayed by pointers driven by high-precision stepping motors, which have high display accuracy and stability. Equipped with liquid crystal display, buttons, and fault indicator lights, the combined instrument provides effective and comprehensive vehicle status information for the driver, and achieves better aesthetics through a reasonable layout of the display interface.

Figure 3, Figure 4, Figure 5, and Figure 6 are part of the stepper motor drive circuit diagram of the instrument, and M1, M2, M3, and M4 are the speedometer, tachometer, oil pressure gauge, and oil level gauge, respectively. Taking the M1 speedometer as an example, its pins 1 and 2 are respectively connected to the PW1P3 and PW1M3 pins of the microcontroller through a filter circuit, and its pins 3 and 4 are respectively connected to the PW2P3 and PW2M3 pins of the microcontroller through a filter circuit. The filter circuit is composed of resistance R4 and capacitors of C3, C7, C11 and C15. PW1P3, PW1M3, PW2P3 and PW2M3 are the motor channel M3 of the microcontroller controller, and several other stepping motors are connected to the motor channel M2, M1 and M0. Since the single-chip microcomputer only has 4 stepper motor channels, the other two stepper motors are directly driven by the IO port. Because the principles of the tachometer, oil pressure gauge and oil gauge are the same, they will not be described in detail here.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. The utility model does not depart from the spirit and scope of the utility model There will also be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model.

Claims (2)

1. A six-step motor type combination meter for EQ140-2 body, including a housing, characterized in that the housing is divided into two areas, the left and the right, which are respectively the first display area and the second display area connected to the first display area. display area; The first display area is divided into upper and lower parts. The upper part is respectively provided with air pressure gauge and oil pressure gauge from left to right. The air pressure gauge and oil pressure gauge occupy 2/3 of the entire first display area; There are voltmeter and fault status light display area at the bottom respectively; The second display area is respectively provided with speedometer and engine speed from left to right; the fuel gauge is located directly below the speedometer; the water temperature gauge is located directly below the engine speedometer; There are buttons and display screens in the middle and lower areas of the table respectively. The display screen is used to display the driving information of the car; The voltmeter is displayed by a stepper motor driven pointer; The back of the housing is provided with a wire harness interface, which is connected to the wire harness on the car through the wire harness interface to transmit various information of the car to the dashboard. 2. A six-step motor type combination instrument for EQ140-2 body according to claim 1, characterized in that, the four corners of the second display area are provided with automobile turn signal lamps.