JPS6127061Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wire harness for electrical wiring of a mobile agricultural machine, in which the wire harness is of a split type to improve workability during vehicle body assembly and disassembly.

Mobile agricultural machinery, such as agricultural tractors, has lights such as headlights, work lights, alarms, starters, dynamos, instruments, electrical control equipment, and various other electrical components built into each part of the machine.
Each of these electrical components is connected to a power source, a switch, etc. via a wire harness. However, since conventional wiring harnesses are integrated, when servicing the engine and transmission case separately, the wiring harness must be disconnected from each device and removed from the vehicle body, and then the engine and transmission case can be separated. This not only takes a lot of time, but also causes inconveniences such as inadvertent wiring mistakes when there are many wiring locations when reassembling after maintenance.

In order to solve this inconvenience, it has been proposed that the wire harness is split so that wiring can be done at several locations at once. In vehicles that are used in special adverse environments, it is extremely difficult to prevent muddy water, dirt, rainwater, etc. from entering the wiring harness connections, so special waterproof and dustproof devices are installed at the connections. However, it has not been put to practical use in mobile agricultural machinery because of the disadvantage that it is necessary to provide such a structure and the structure becomes complicated.

Therefore, the present invention divides the wire harness so that it can be connected and separated in the middle, and the connecting part of the divided wire harness is embedded in the fuselage connecting joint part when assembling the fuselage, and the wire harness is connected in a sealed manner by the fuselage connection. This configuration eliminates the hassle of disconnecting and reconnecting wires from the wire harness to electrical components each time the aircraft is disassembled and maintained. The wire harness can be wired to each electrical component in advance before connecting it to the chassis side, which reduces work time, greatly improves work efficiency during assembly and disassembly, and makes it easier to connect the wire harness to each electrical component. The present invention aims to provide a wire harness for electric wiring of a mobile agricultural machine, which can completely prevent the intrusion of muddy water, muddy soil, and rainwater by sealingly connecting a connecting part at the same time as connecting the machine body.

The structure of the present invention will be explained with reference to an embodiment shown in the drawings. The illustrated example shows an agricultural tractor 1, in which a chassis 4 supporting front wheels 2, 2 and rear wheels 3, The chassis 5, the engine 6, the transmission case 7, and other parts constituting the aircraft body are connected in the front-rear direction via connecting bolts 8 and 9, forming an integrated structure. Various devices such as an air cleaner 10 and a radiator 11 are mounted on the front chassis 5 to supply air and cool the engine 6. A headlight 12 is mounted on the front end of the front chassis 5. Front grill 13 incorporating
is provided. Further, a fuel tank 15 equipped with a fuel gauge 14 is provided above the engine 6, and a starter 16 is provided on one side of the engine 6. On the other hand, a panel body 18 in which various instruments, a pilot lamp (not shown), a driving operation handle 17, etc. are incorporated is fixed upright at the front of the transmission case 7, and is attached to one side of the panel body 18. The starter switch 19 rotates the starter 16 and starts the engine 6. Further, a hydraulic case 20 containing a hydraulic control valve, a hydraulic cylinder, etc. is integrally fixed to the rear upper surface of the transmission case 7, and when the hydraulic control valve is operated, the hydraulic cylinder expands and contracts to move the lift arm 21. It moves up and down, thereby automatically raising and lowering a working machine (not shown) connected via the top link 22 and lower link 23. 21a is a lift rod. Further, a driver's seat 24 is fixed to the upper front part of the hydraulic case 20 via a frame 24a. 25 is a battery disposed on one rear side of the transmission case 7, 26 is a rear wheel 3,
This is a rear combination lamp attached to the rear end of the fenders 3a, 3a of No. 3. In the figure, 27 is a bonnet, 28 is a muffler, 29 is a safety frame for protecting the operator, and 30 and 30a are direction indicator lights.

Although not shown, the aircraft 1 has a horn,
It is equipped with a regulator and various necessary electrical components for warning and control work of each part.

In FIGS. 3 and 4, 31 to 35 are wirings connected to the above-mentioned electrical components, respectively. 31 is for the battery 25, 32 is for the rear combination lamp, 33 is for the fuel gauge, and 34 is for the headlight. , 35 are for the starter. 36 is ground.

Therefore, in the present invention, each of the wire harnesses for the above-mentioned wiring is collectively constructed in a split type at the same location. That is, the wire harness for electrical wiring is divided into the front side and the rear side of the fuselage at the midway point in the length direction, and each divided end has a pair of male connector 37a and a female connector as shown in FIG. connector 37
b is attached, thereby forming the divided portion of the wire harness into a multi-pole connector 37 that can be freely connected and separated, and the male side connector 37
a into the mounting hole 7b provided on the upper part of the front end flange 7a of the transmission case 7, and the female connector 37b into the rear end flange 6a of the engine 6.
They are removably fitted into the mounting holes 6b provided in the upper part through elastic bodies 38 for holding the connectors.

39 is an insertion hole for the connecting bolt 9, 40 is a positioning dowel pin, and 40a is a hole into which the dowel pin 40 is inserted.

A seal is interposed at the joint between the engine 6 and the transmission case 7 to prevent rainwater, etc. from entering the transmission case 7 and the engine 6 through the joint, and to prevent rainwater from entering the transmission case 7 and the engine 6. The elastic body 38 prevents rainwater from entering from 6b and 7b.

In the above embodiment, the multi-pole connector 37, which is the connection part of the divided wire harnesses, is provided at the connection part between the engine 6 and the transmission case 7. However, the position of the connection part of the wire harness is Not limited to location,
Further, the number of connectors is not limited to one, but may be divided into a plurality of connectors and installed on the same coupling surface.

In the configuration as described above, when the engine 6 and transmission case 7 are to be separated when disassembling or servicing the aircraft 1, the multi-polar connection can be made by simply removing the connecting bolts 9 and separating the engine 6 and transmission case 7. Connector 37 is male connector 37a
and the female connector 37b, the connection state of the wire harness is released, and the wire harness is separated into the harness part on the front side of the fuselage and the harness part on the rear side of the fuselage, while remaining attached to the fuselage. As shown in the figure, there is no need to remove the connections of the wire harness to each electrical component one by one before separating the engine 6 and the transmission case, and the two can be easily and quickly separated. In addition, when reassembling after maintenance is completed, insert the positioning dowel pins 40, 40 provided on the transmission case 7 side into the dowel pin insertion holes 4 on the engine 6 side.
0a, 40a, the male connector 37a and the female connector 37b automatically fit together, and the wire harness can be connected immediately, greatly improving work efficiency.

Furthermore, in the assembly manufacturing process, wiring work for the electrical components of each part of the aircraft body can be completed before connecting the engine 6 side and transmission case 7 side, making assembly work more efficient and reducing work time. can be further shortened.

As described above, the present invention divides the wire harness for wiring to various electrical components installed in the aircraft so that it can be connected and separated at the midway point of the wiring, and connects the connected parts of the divided wire harnesses to the fuselage when the aircraft is assembled. It is embedded in the connecting joint and is configured to be connected in a sealed manner by connecting the aircraft, so when disassembling or servicing the aircraft, simply separating or joining the chassis side automatically separates or connects the wire harness. To eliminate the trouble of disconnecting and reconnecting the wires of the wire harness to electrical components one by one each time as in the past, and to eliminate the possibility of troubles such as wiring mistakes. Furthermore, in the manufacturing and assembly process, wiring work to each electrical component can be completed before the chassis side is connected, which enables efficient assembly work and further reduces work time. In addition to greatly improving the work efficiency when assembling and disassembling the mop, the connection part of the wire harness is connected in a sealed manner at the connection part of the machine body, completely preventing the intrusion of muddy water, muddy soil, rainwater, etc. It has now become possible to provide a wire harness for electrical wiring for mobile agricultural machinery that can significantly improve durability.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Fig. 1 is an overall side view of an agricultural tractor equipped with the present invention, Fig. 2 is a front view of the above, Fig. 3 is a side view showing the wiring state of the wire harness, Fig. 4 is a plan view of the above, and Fig. 5 is a side view of the agricultural tractor equipped with the present invention. Fig. 6 is a partially cutaway side view showing the structure of the joint between the engine and transmission case, and Fig. 6 is a front view and side view showing the installation state of the female connector and male connector, respectively, and Fig. 7 is the multi-pole connector. FIG. In the diagram, 1 is the fuselage, 4 is the chassis, 6 is the engine, and 7
is the transmission case.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Wire harnesses for wiring to various electrical components installed in the aircraft are divided into parts in the middle of the wiring so that they can be connected and separated, and the connecting parts of the divided wire harnesses are connected when the aircraft is assembled. 1. A wire harness for electrical wiring of a mobile agricultural machine, characterized in that it is embedded in a machine body connection joint and configured to be connected in a hermetically sealed manner by the machine body connection. 2. A wire harness for electrical wiring of a mobile agricultural machine according to claim 1, wherein the connecting portion of the wire harness is provided at the connecting portion between the engine and the transmission case.