JPH0516448Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the configuration of a program control circuit of an automatic transmission system control device that automatically controls the transmission system of an automobile.

[Conventional technology]

2. Description of the Related Art Various automatic transmission system control devices are known for disengaging and shifting clutches and transmission gears in order to reduce the burden of operating pedals and transmission levers on the driver when driving an automobile.

After the car is started, a car transmission system sets several speed reduction ratios, including reversal, between the engine and the wheel drive shafts in order to obtain the vehicle speed or driving force required by the driver, or to move the car backwards. This converts the meshing of the gears that the vehicle has, but different combinations of reduction ratio series are required depending on the type of engine and vehicle body.

For this reason, a technology has been proposed in which a shift pattern for each vehicle type is stored in the ROM of a program control circuit in an automatic transmission control device, and the ROM is replaced for each vehicle type (Japanese Patent Laid-Open No. 51-46666).
Publication No.).

[Problem that the invention attempts to solve]

However, storing speed change patterns including different system reduction ratios for each car model in ROM, and preparing and connecting ROMs for each car model during the manufacturing process means that many different types of cars can be manufactured on one line. Current manufacturing processes can easily result in incorrect connections or settings, which can easily lead to malfunctions. In addition, the installation position of the microcomputer may vary due to the design of the vehicle.
Since it is limited to a certain location, there is a problem that the connection setting work is not easy and puts a burden on the operator. Furthermore, since it is necessary to prepare a ROM or a board equipped with a ROM for each car model, inventory management becomes difficult.

This invention solves these drawbacks, simplifies the setting work during production assembly, prevents the occurrence of incorrect settings and causes of failure during production assembly, and simplifies inventory management. The purpose is to provide a control device for.

[Means for solving problems]

The present invention is characterized in that a connection part is provided on the harness wire drawn out from the program control circuit, and a module plug corresponding to the reduction ratio is selected and connected to the harness wire.

That is, the present invention provides a control device for automatic transmission system control equipped with a program control circuit that receives engine rotational speed information as input and outputs clutch connection state and transmission gear selection information as output information. The control circuit is equipped with means for storing a plurality of programs corresponding to a plurality of vehicle types, and a means for selecting one of the programs and executing it as a control program, and this control circuit can be selected by selectively grounding its terminals. A connector is connected to the above terminal via a harness wire, and a module plug is attached to this connector, and this module plug is supplied with a power supply voltage. The above-mentioned terminal is grounded or opened according to the logic corresponding to the vehicle type, and the modular plug is attached to the vehicle body together with the harness wire.

[Effect]

There are many series of reduction ratios for automobile transmission gears and rear axles for each car model, but the automatic transmission system control program is the same for each car model, so the part that instructs the reduction ratio determination section can be programmed by a microcomputer. Separate it and make it into a simple module plug. By preparing modular plugs with different connections for different types of vehicles with different reduction ratios in their automatic transmission systems, the microcomputer can apply one type of plug to many types of vehicles.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of this embodiment.
In FIG. 1, an engine 1, a clutch section 2, a transmission gear section 3, an actuator 4, a brake pedal 5, and an accelerator pedal 6 are of known construction, and there is also a sensor 1a for detecting the rotational speed of the engine 1 and a speedometer 7. The information from is connected to the control circuit 9 via the input/output interface 8 and the harness wire 12b. This control circuit 9 controls the actuator 4 based on information on the rotational speed of the engine 1 from the sensor 1a, and smoothly disengages and disengages the clutch of the clutch section 2 and the transmission gear of the transmission gear section 3, thereby controlling the clutch and transmission of the automobile. Perform operations automatically.

Here, the feature of the present invention is that the control circuit 9 includes a memory circuit 9a that stores a plurality of programs corresponding to a plurality of vehicle types, and a microprocessor 9b that selects one of the programs and executes it as a control program. , This control circuit 9 has a structure in which a control program to be selected is designated by grounding one of its terminals (four in this embodiment) to which a power supply voltage of 5V is applied. A connector 10 is connected via a harness wire 12a, and each contact pin 10a, 10 of this connector 10 is connected via a harness wire 12a.
A module plug 11 is attached to the connector 10, and the module plug 11 has a circuit configuration that grounds or opens the terminals b, 10c, 10d, and 10e (ground pins) according to the logic corresponding to the vehicle type, and the harness wire 1
This is due to the fact that it is attached tightly to the vehicle body along with 2a.

In FIG. 1, 4 of the microprocessor 9b
The terminals and the ground terminal are the harness wire 12a.
The connectors 10 and 10
The above contact pins 10a, 10b, 10c, 10d
and 10e, respectively. Reference numeral 10f denotes a guide pin, which is inserted into the guide pin receiver 11a of the module plug 11 to prevent the module plug 11 from being oriented in the wrong direction when it is installed. Module plug 11
In principle, it is attached when the vehicle is outfitted and fixed to the vehicle body together with the harness wire 12a.

FIG. 2 shows the terminals of the control circuit in this embodiment, that is, the combination of processing of each contact pin in the module plug when there are five contact pins.

In FIG. 2, the triangular protrusion on the left side shown in the example is the guide pin receiver 11a in FIG.
shows. In this figure, there are four contact pins 10a to 10d.
is represented by the symbol ~. Assuming that the contact pin produces a signal of 0 when it is grounded and a signal of 1 when it is open, 16 types of combinations are possible as shown in this figure.

In FIG. 1, the microprocessor 9b is
Each time a control operation is performed, the state of the above-mentioned terminals is read as a parameter for executing the program, and the corresponding program is stored in the memory circuit 9a.
Read the settings from the program and start executing the program. Thereby, the control program can be executed using the correct reduction ratio parameter corresponding to the vehicle type.

In this way, the microprocessor 9 shown in FIG.
The control circuit 9 including b can be of exactly the same design for these 16 types of vehicles.

In this embodiment, the number of terminals is four, but if the microprocessor 9b can have more terminals than this, the same control circuit can be applied to even more vehicle types.

Connector 1 with module plug 11 attached
0 is attached to the part shown by the dotted circle M inside the front grille 13 on the front of the vehicle body, which is easy for an operator to attach, as shown in FIG. 3, for example. Fourth
The figure is an explanatory diagram for installing a module plug, in which the module plug is attached to the connector 10 as shown in a, then wrapped with an adhesive insulating sheet 14 as shown in b, and then attached to the stiffener 15 as shown in c. I become nervous. Therefore, it is difficult to easily remove the module plug.

[Effect of idea]

According to the present invention, there is no need to prepare multiple types of microcomputers for different types of automobiles, so the manufacturing cost of microcomputers is significantly reduced, and inventory management and parts delivery for production lines are extremely easy. become. In addition, the setting and connection work for each car model only requires inserting the module plug that identifies the car model into the terminal, so this work is easier than setting work by replacing the ROM or using a switch, and it also prevents errors in setting the control program. This has the effect of preventing the occurrence of Furthermore, since it is only necessary to prepare a module plug for each vehicle model, and the connection position of the module plug can be provided at any position, installation work in the assembly production process can be made more efficient.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.
FIG. 2 is a combination diagram of the processing of the contact pins of the module plug of the above embodiment. FIG. 3 is a diagram showing the mounting position of the module plug of the above embodiment. Figure 4 is an explanatory diagram for installing the module plug. 1... Engine, 1a... Sensor, 2... Clutch section, 3... Transmission gear section, 4... Actuator, 5... Brake pedal, 6... Accelerator pedal, 7... Speed meter, 8... Input Output interface, 9...Control circuit, 9a...Memory circuit, 9b...Microprocessor, 10...Connector, 10a to 10e...Contact pin, 10f...
Guide pin, 11...Module plug, 11a
... Guide pin receiver, 12a, 12b ... Harness wire, 13 ... Front grill, 14 ... Insulation sheet, 15 ... Stiffener.

Claims (1)

[Claims for Utility Model Registration] A control device for automatic transmission system control equipped with a program control circuit that receives engine rotational speed information as input and outputs clutch connection state and transmission gear selection information as output information, The control circuit has a means for storing a plurality of programs corresponding to a plurality of vehicle models, and a means for selecting one of the programs and executing it as a control program, and the control circuit has a terminal that is selectively grounded. A connector is connected to the above terminal via a harness wire, and a module plug is attached to this connector. A control device for controlling an automatic transmission system, which is configured to ground or open the above-mentioned terminal to which is applied a voltage according to the logic corresponding to the vehicle type, and the module plug is attached to the vehicle body together with a harness wire. .