JPH0998635A - Structure for electric wiring of working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for electric wiring of a working vehicle capable of affording the type of a machine of prescribed specifications according to simple operations. SOLUTION: This structure for electric wiring of a working vehicle is obtained by bundling plural electric wirings L for connecting a controller 7 installed in a machine body to plural devices S1, S2, S3 and S4 which are the object of control and arranged in the machine body as a wire harnesses 13, composed by connecting the first wire harnesses 13A connected to the side of the controller 7 and the second wire harness 13B connected to the side of the devices S1, S2, S3 and S4 which are the object of control to the respective connecting terminals of a single connector 14 for each electric wiring L. The second connector 15 fitted into the connecting terminals of the connector 14 so as to enable the free fitting and removal is provided so that plural kinds of specifications in which the connecting or insulation treatment among the prescribed connecting terminals is carried out so as to perform the connection or insulation among the mutual prescribed electric wirings of the first wire harnesses 13A and the second wire harnesses 13B may be replaced from the connector 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wiring structure for a work vehicle in which a plurality of electric wires for connecting a control device mounted on a machine body and a plurality of control target devices arranged on the machine body are bundled as a wire harness. Regarding

[0002]

2. Description of the Related Art Conventionally, as an electric wiring structure in a working vehicle such as a combine, various control target devices, for example, in a combine, a device for correcting a tilt of a machine body with respect to the left-right direction, a cutting height control of a pre-cutting processing unit are used. The electrical wirings for transmitting control signals, driving signals, and the like to the device that performs the spin soft turn and the like are bundled and wired in the fuselage as a wire harness. In the work vehicle, the specifications are different depending on the control target and control function depending on the model depending on the model, but in manufacturing, the control device has all the functions related to each control. Only the control corresponding to a specific model is possible by configuring the program to be compatible and changing the control program for each model or cutting the jumper wire on the control circuit. Had set.

[0003]

However, in the above-mentioned conventional structure, the control program is changed or the circuit is changed in order to set so that the control corresponding to the predetermined model can be performed at the time of manufacturing the work vehicle. There has been a problem that a laborious work such as cutting a jumper wire has to be performed, which is a complicated work and the work efficiency is lowered.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an electric wiring structure for a work vehicle capable of obtaining a model having a predetermined specification by a simple work.

[0005]

[Means for Solving the Problems]

(Structure) An electric wiring structure for a work vehicle according to claim 1 of the present invention is a bundle of a plurality of electric wires that connect a control device mounted on a machine body and a plurality of control target devices arranged on the machine body as a wire harness. In the electric wiring structure of the working vehicle, the wire harness includes a first wire harness connected to the control device side and a second wire harness connected to the control target device side. A second connector which is configured to be connected to each connection terminal of the connector separately for each electric wiring, and which is removably fitted into the connection terminal of the connector, wherein the second connector is the first wire harness and It is possible to replace a plurality of types of specifications in which predetermined connection terminals are connected or insulated so as to connect or insulate predetermined electric wires of the second wire harness to the connector. It is characterized that it is made.

(Operation) According to the structure of claim 1 of the present invention, the wire harness includes the first wire harness connected to the control device side and the second wire harness connected to the control target device side. Is connected to each connection terminal of a single connector for each electric wiring, and a second connector that is removably fitted into the connection terminal of the connector is provided, and the second connector is the first connector. Since the wiring harness and the second wiring harness are configured to be connectable or insulated between the predetermined connection terminals so as to connect or insulate the predetermined electric wires from each other, it is possible to replace a plurality of specifications of the connector with the connector, To get a work vehicle of the required specifications,
It is only necessary to fit the second connector corresponding to the specification into the connector, and by the pre-established connection or insulation treatment on the second connector side, only the necessary control function is electrically connected to the control device. Therefore, the program can be automatically changed and modified so that unnecessary control functions are not activated even on the control device side.

(Effect) Therefore, the above-mentioned claim 1 of the present invention
According to the configuration, it is possible to set the control according to the model having the predetermined specifications by a very simple work of simply selecting the second connector and fitting it into the connector, thereby improving the work efficiency. Further, even when the working vehicle set to the predetermined specifications is switched to another specification or a new function is added, it is only necessary to fit the second connector in accordance with the specifications into the connector. There is an advantage that it is not necessary to carry out a large-scale replacement of electric wiring or the like.

(Structure) An electric wiring structure for a work vehicle according to claim 2 of the present invention is the same as that according to claim 1,
In addition to the fitting portion of the second connector, another electric device is attached to the connector, the first wire harness or the second wire harness.
It is characterized in that there is provided a fitting portion into which the third connector connectable to the wire harness can be fitted and removed.

(Operation) According to the structure of the second aspect of the present invention, another electric device can be connected to the connector in addition to the fitting portion of the second connector to the first wire harness or the second wire harness. Since the third connector has a fitting portion into which the connector can be inserted and removed, when an electric device such as an optional device is separately installed as necessary, the third connector is connected to a predetermined position of the connector with another electric device. 3rd
It is only necessary to fit the connector, or the third connector can be separately fitted even when the second connector is fitted in the connector.

(Effect) Therefore, the above-mentioned claim 2 of the present invention.
According to the configuration, the third connector is separately fitted to the connector into which the second connector for setting the predetermined specifications is fitted, and the electric signal is supplied from the first wire harness or the second wire harness. In addition to the advantage that a separate function can be added, it is not necessary to provide a dedicated connector for connecting the other electric device to the wire harness, so that the wiring harness can be constructed at a lower cost than the one provided with the dedicated connector. .

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 6 shows a combine as an example of the work vehicle. This combine equips the machine body 2 supported by a pair of right and left crawler traveling devices 1, 1 with the threshing device 3, the boarding control section 4, the grain collecting section 5, etc., and at the front end of the machine body 2, The cutting pretreatment unit 6 is mounted so as to be movable up and down around the shaft center.

Then, this combine has a boarding control section 4
In addition, a control device 7 equipped with a microcomputer is provided. The control device 7 outputs control signals and drive signals for driving relays, solenoids, etc., and detection signals from various sensors 8 installed at various places of the machine body 2 are input to the control device 7. I am trying. On the machine body 2 side, there are provided hydraulic cylinders 9 and 9 capable of vertically moving the crawler traveling devices 1 and 1 with respect to the machine body 2, and a hydraulic cylinder 10 for vertically driving the pre-mowing processing unit 6. Is equipped with. Further, a horizontal detection sensor 8A for detecting the horizontal state in the front, rear, left and right of the machine body 2 is provided, and a cutting height sensor 8B including an ultrasonic sensor for detecting the ground height in the pre-mowing processing unit 6 is provided. ing. Control device 7
Then, in the equipped microcomputer, a program for horizontal control for keeping the machine body 2 horizontal based on the detection result of the horizontal detection sensor 8A, and a constant cutting height based on the detection result of the cutting height sensor 8B. The ROM has a program for controlling the cutting height for maintaining the above. Then, in the control device 7, a selection switch (not shown) for selecting the presence or absence of horizontal control of the machine body, or a selection switch (not shown) for selecting the presence or absence of cutting height control, respectively,
The horizontal control state or the cutting height control state can be selected. However, four types of combine models are set: one that performs both horizontal control and cutting height control, one that does not perform both controls, one that performs only horizontal control, and one that performs only cutting height control. Therefore, of the horizontal control and the cutting height control, the selection switch is not provided for the control that is not performed. Then, a control signal for actuating solenoids S1, S2, S1, S2 as control target devices of electromagnetic control valves 11, 11 for expanding / contracting the hydraulic cylinders 9, 9 individually and expanding / contracting the hydraulic cylinders 10 are described. Solenoids S3, S4 as devices to be controlled by the electromagnetic control valve 12 for driving
A control signal for activating the above is output from the control device 7 based on each program.

The electric wiring for outputting a control signal from the control device 7 and the electric wiring L for inputting a detection signal from each sensor 8 are connected to the control device 7, and the predetermined electric wiring L. Wire harness 13
Is composed. Of the wire harness 13, the wire harness 13 having a control signal line for driving and controlling the solenoids S1, S2, S3, S4 has a connector 14 in the middle thereof. That is, this wire harness 13 is the first wire harness 1 connected to the control device 7.
3A and a second wire harness 13B connected to the solenoids S1, S2, S3, S4, etc., and the respective electric wirings L of the first wire harness 13A and the second wire harness 13B are separately provided. , The connection terminal pins of the connector 14. As shown in FIGS. 1 to 5, a plurality of types of second connectors 15 that are fitted into and detachable from the connector 14 are provided. As described above, the second connector 15 performs both horizontal control and cutting height control, and does not perform both controls.
4 which only controls horizontal and only controls cutting height
It is configured according to the specifications of the species. More specifically, although the horizontal control and the cutting height control are both performed, the second connector 15A is
It is to be fitted to the connector 14 having 9-pin connection terminal pins, and the connection terminal pins at specific locations ((9)-
(10), (12)-(13), (15)-(16)) are short-circuited and connected by jumper wires (numbers in circles showing each terminal in (a) to (d) of Fig. 4) Shows the state of connecting with a jumper wire that is connected with a solid line). That is, this jumper wire is set so as to connect the predetermined electric wire L of the first wire harness 13A and the predetermined electric wire L of the second wire harness 13B, and the solenoid from the control device 7 is connected. In order that the control signals of S1, S2, S3 and S4 are transmitted to the solenoids S1, S2, S3 and S4,
Moreover, the power supply lines of the first and second wire harnesses 13A and 13B are set to be connected to each other. The control device 7 sets the control program so as to enable the automatic horizontal control and the cutting height control by detecting the signal state by the wiring. The second connector 15B, which does not perform both the automatic horizontal control and the cutting height control
As shown in FIG. 4B, is to be fitted into a connector 14 having 19-pin connection terminal pins, and the connection terminal pins ((15)-(16)) at specific locations are It is connected with a jumper wire. That is, only the power supply lines of the first and second wire harnesses 13A and 13B are set to be connected to each other. The control device 7 sets the control program so as to prohibit both the automatic horizontal control and the cutting height control by detecting the signal state by the wiring. Further, the second connector 15C, which does not carry out the automatic horizontal control and the cutting height control, is fitted to the connector 14 having the 19-pin connecting terminal pin as shown in FIG. There are connection terminal pins at specific locations ((9)-(10),
(15)-(16)) are connected by jumper wires. That is,
This jumper wire is set so as to connect the predetermined electric wiring L of the first wire harness 13A and the predetermined electric wiring L of the second wire harness 13B, and the solenoid S1 from the control device 7 The control signal of S2 is set to be transmitted to the solenoids S1 and S2, and the power supply lines of the first and second wire harnesses 13A and 13B are set to be connected to each other, and the solenoid S3 from the control device 7 is set. The control signal line of S4 and the electric wiring L for control signal input on the side of each solenoid S3, S4 are insulated. By detecting the signal state by this wiring, the control device 7 sets a control program to enable automatic horizontal control and prohibit cutting height control. The second connector 1 which controls the cutting height but does not perform the automatic horizontal control
As shown in FIG. 4D, 5D is to be fitted into the connector 14 having 19-pin connection terminal pins, and the connection terminal pins at specific locations are connected to each other ((12)-(13)). , (15) −
(16)) is connected with a jumper wire. That is, this jumper wire is a predetermined electric wire L of the first wire harness 13A and a predetermined electric wire L of the second wire harness 13B.
Is set so that the control device 7 transmits the control signals of the solenoids S3 and S4 to the solenoids S3 and S4, and the first and second wire harnesses 13A and 13B are connected to each other. The power supply lines are set to be connected to each other, and the solenoids S1, S from the control device 7 are set.
The control signal line 2 and the electric wiring L for inputting the control signal on the side of each solenoid S1, S2 are insulated.
By detecting the signal state by this wiring, the control device 7
Set the control program to enable cutting height control and prohibit automatic horizontal control.

With the above structure, the second connectors 15A, 15B, 15C, 1 corresponding to the combine specifications are provided.
By selecting 5D and fitting it into the connector 14, it is determined whether a predetermined detection signal is input to the control device and whether a predetermined control signal can be output, and a predetermined program is made to correspond. I am trying to start it.

[Other Embodiments] As shown in FIG. 7, even if the second connector 15 is fitted into the connector 14, another third connector 17 can be fitted and removed freely. ing. As a result, the lamp 18 can be used as another electric device for exclusively illuminating the mowing place connected to the third connector 17. With this configuration, when an electric device or the like is attached to the machine body 2 as an option, the second connector can be installed in the connector 14 that is installed in advance without additional electric wiring.
The first wire harness 13A or the second wire harness 13B only needs to be fitted in a fitting place different from the connector 15.
There is an advantage that more power can be supplied, or control signals and detection signals can be transmitted.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of drawings]

FIG. 1 is a schematic circuit diagram showing a wire harness, a control device, a control target device, a connector, and the like.

FIG. 2 is a side view showing a connector and a wire harness.

FIG. 3 is a perspective view showing a connector and a second connector.

4A to 4D are explanatory diagrams showing connection and insulation states of terminals of a second connector having different specifications.

FIG. 5 is a sectional side view showing an example of a second connector.

FIG. 6 is an overall side view showing the combine.

FIG. 7 is a side view showing a connector and a second connector according to another embodiment.

[Explanation of symbols]

 2 Aircraft 7 Control device 13 Wire harness 13A 1st wire harness 13B 2nd wire harness 14 Connector 15 2nd connector 17 3rd connector 18 Another electric device L Electric wiring S1-S4 Control target device

Claims (2)

[Claims] 1. A control device (7) mounted on a body (2)
And a plurality of control target devices (S
1, S2, S3, S4) is a wiring structure for a work vehicle in which a plurality of electric wirings (L) for connecting with (1), (S2, S3, S4) are bundled as a wire harness (13), wherein the wire harness (13) is the control device. The first wire harness (13A) connected to the (7) side and the second wire harness (13B) connected to the control target device (S1, S2, S3, S4) side are a single connector. A second connector (15) which is configured to be connected to each connection terminal of (14) separately for each electric wiring (L) and which is removably fitted into the connection terminal of the connector (14) is provided. The two-connector (15) has a plurality of specifications in which predetermined connection terminals are connected or insulated so as to connect or insulate the predetermined electric wires of the first wire harness (13A) and the second wire harness (13B). Stuff An electric wiring structure for a work vehicle configured to be replaceable with respect to the connector (14). 2. A separate electric device (18) is provided on the connector (14) separately from the fitting portion of the second connector (15) on the first wire harness (13A) or the second wire harness (13A).
The electric wiring structure for a work vehicle according to claim 1, further comprising a fitting portion into which a third connector (17) connectable to the wire harness (13B) can be fitted and removed.