JP2011047130A - Controller arranging structure for working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller arranging structure for a working machine, which exhibits various effects such as improvement of the workability in the maintenance of an engine room, securing the arrangement space for other electric components, suppression of the installation costs of the electric components less than the installation costs of the controller, and no possibility of interference by harness at flipping-up of a driver sheet. <P>SOLUTION: A plate 10 fixed with the controller 3 is secured to the lower part of a driver sheet 1 having the front tip thereof rotatably journalled, and a harness insertion hole 6 is formed on a rotary shaft 20 side of the upper face of the plate 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a structure when a controller is arranged in a work machine.

  In a work machine provided with a front structure, equipment is controlled by various controllers. These controllers are arranged at appropriate positions in the cab and the hood, but when they are arranged in the cab, they are often arranged at the lower part of the driving seat due to the arrangement of other devices. The structure of an automobile is disclosed in Patent Document 1 as a similar structure).

  FIG. 3 shows its appearance, and FIG. 4 shows an example of its structure. As shown in the figure, a plate 50 is disposed on the upper surface of the base frame 5 that is the base of the operation seat 1, and the controller 3 is fixed to the upper surface of the plate 50. In the vicinity of the controller 3, a connector 30 is disposed via the harness 4. By connecting the connector 30, the controller 3 is connected to a device such as a monitor (not shown). The plate 50 arranged in this manner is freely rotatable forward through the hinge 51 at the front end, and the sheet 1 located on the upper part of the plate 50 can be flipped up as the plate 50 rotates. It has become. Since the engine room 52 is formed below the base frame 5, the plate 50 is also a member that closes the upper opening of the engine room 52.

JP-A-6-344955 (FIGS. 4 and 6)

  By the way, although maintenance of the engine in the engine room 52 is also performed from the inside of the cab, in the case of the structure of FIG. 4, the work of removing the connector 30 of the controller 3 is first required before the seat 1 is flipped up. It was. Further, when the seat 1 is flipped up, the harness 4 may jump out to the side of the seat 1 and interfere with other members.

  Furthermore, in consideration of the convenience of removing the controller 3, the connector 30 of the controller 3 is arranged on the upper surface of the plate 50. From the arrangement space and the work space when the connector 30 is attached / detached, The plate 50 has no room for placing other electrical components.

  In addition, since only the controller 3 can be arranged as a result, the position of the connector 30 is not particularly considered. For example, as shown in the figure, the connector is on the opposite side of the driving seat 1 to the hinge 51 (the rear side of the driving seat). Since 30 is arranged and equipment such as a monitor is located on the front side of the seat, the harness 4 becomes long and the cost is high.

  The present invention was devised in view of the above-described problems of the prior art, and improves the workability during engine room maintenance, as well as securing the arrangement space for other electrical components, and also increases the installation cost of the controller. It is an object of the present invention to provide a controller arrangement structure that can be held down at a low cost and that has various effects such as the possibility that the harness does not interfere when the driving seat is flipped up.

  For this reason, the controller arrangement structure of the work machine according to the present invention is such that a plate to which the controller is fixed is fixed to a lower portion of an operation seat whose front end is pivotally supported, and the rotation surface of the upper surface of the plate is rotated. An intake hole for a controller harness is formed on the moving shaft side.

  In the present invention, because the controller harness take-in hole is formed on the rotating shaft side of the upper surface of the controller fixing plate, the controller harness can be inserted downward from the hole, and the connector Can also be placed below the plate. That is, a structure in which the connector is not disposed on the upper surface of the plate is possible. In the structure in which the connector is not arranged on the upper surface of the plate, it is not necessary to remove the connector when the operation seat is flipped up, and the work complexity is eliminated.

  Further, since the harness taking-in hole is formed on the rotating shaft side, the harness is positioned in front of the seat, and it is short to connect to a device such as a monitor arranged in front. However, when the driving seat is flipped up, the controller also rotates together with the plate, so that the harness is subjected to expansion / contraction pressure, but since the harness taking-in hole is formed on the rotating shaft side, The effect of stretching pressure is minimal. For example, the controller harness is pulled when the driving seat is flipped up, but the amount of pulling is minimized. Be minimal.

  Furthermore, since it is not necessary to arrange the connector on the upper surface of the plate, in such a case, there is a sufficient space, and other electrical components (for example, different types of controllers) can be arranged.

  Since the plate to which the controller is fixed is fixed to the lower part of the operation seat, when the operation seat is rotated, the plate is also rotated. Therefore, if the driving seat is rotated upward, that is, if it is flipped up, the base frame that becomes the seat base will be exposed, and if there are no other members in the opening frame, the engine room can be accessed from there. What can be done is similar to the conventional structure.

  As described above, according to the controller arrangement structure of the work machine according to the present invention, a structure in which no connector is arranged on the upper surface of the plate is also possible. With such a structure, for example, during engine maintenance, the operation seat is flipped up. In this case, it is not necessary to remove the connector, and workability is improved.

  In addition, a short harness is sufficient, and the cost is reduced, and the harness is positioned on the rotating shaft side, so that the possibility that the harness of the controller interferes with other members when the seat is flipped up is reduced.

  Furthermore, since the structure which does not arrange | position a connector on a plate upper surface is attained, the arrangement space of another electrical component is securable.

FIGS. 2A and 2B show an example of a structure according to the present invention, in which FIG. 2A is an explanatory diagram illustrating a mode in which a driving seat is in a normal state, and FIG. FIG. 4 schematically shows another example, in which (a) shows a mode in which the driving seat is in a normal state, and (b) shows a mode in which the driving seat is flipped up. It is explanatory drawing which shows a conventional structure, (a) is a general view, (b) is the elements on larger scale. FIG. 4 schematically shows a rotation state of the driving seat having the conventional structure shown in FIG. 3, where (a) shows a configuration in which the driving seat is in a normal state, and (b) shows a configuration in a state in which the driving seat is flipped up. .

  An example of a specific form according to the present invention will be described with reference to the drawings. The following example is an example applied to a hydraulic excavator that is a work machine. Note that the following examples are merely examples, and it is natural that the present invention is not limited to the following configurations, such as applied machines and specific forms.

  FIG. 1 shows the periphery of a driving seat in a small swing type excavator cab to which the present invention is applied, (a) shows a configuration in which the driving seat is in a normal state, and (b) shows a configuration in which the driving seat is flipped up. Is shown. In the figure, 1 is a driving seat, 2 is a hinge, 3 is a controller, 4 is a harness, 5 is a base frame as a base, 6 is a harness receiving hole, 10 is a plate for fixing the controller, 20 is a hinge shaft (rotating) Each axis is shown.

  The operation seat 1 is pivotally supported by a hinge 2 on the front end of the bottom of a base frame 5 serving as a base. The base frame 5 is provided with an opening frame on the upper surface covered with the operation seat 1, and an engine room is formed below the opening frame. Therefore, this opening frame is an access port to the engine room in the cab.

  The operation seat 1 has a plate 10 fixed to the lower end thereof integrally with the seat body, and the hinge 2 is attached to the front end of the plate 10. The plate 10 is a controller fixing plate in the present invention, and the controller 3 is fixed to the upper surface of the plate 10 as shown in the figure. That is, in this embodiment, the controller fixing plate 10 substantially doubles as the bottom plate of the operation seat 1. Of course, the controller fixing plate may be arranged below the bottom plate of the main body of the operation seat 1. For example, as shown in FIG. 2, the plate 13 is fixed to the bottom plate 11 via the bracket 12. The controller 3 may be fixed to the plate 13 or the like.

  In addition, a harness take-in hole 6 is formed in the upper surface of the plate 10 in the vicinity of the hinge 2 on the rotating shaft side to direct the harness 4 of the controller 3 downward. The harness 4 of the controller 3 is directed downward (in the drawing, on the monitor side) from the hole 6, but the connector 30 of the harness 4 is disposed at the tip thereof, so that the connector 30 is particularly on the upper surface of the plate 10. In this embodiment, the two controllers 3 are arranged on the plate 10 because there is no need to arrange them.

  Since the present embodiment is configured as described above, for example, when the engine is maintained, the opening frame of the base frame 5 is immediately exposed if the operation seat 1 is flipped forward without removing the connector 30. You can access the engine room in that state.

  Further, in this embodiment, the harness 4 is shortened because the intake hole 6 serving as the intake port of the harness 4 is in the vicinity of the hinge shaft 20, that is, in the vicinity of the front end of the seat 1. Although the harness 4 is pulled at the time of rotation, the amount thereof is minimized (in contrast, when the operation seat 1 is returned to the normal position, the amount of bending is also minimized), and there is no problem. For this reason, the length of the harness 4 used in this embodiment is shorter than that of the conventional embodiment shown in FIG. As a result, the possibility that the harness 4 interferes with the seat 1 and other members when the driving seat 1 is flipped up is reduced.

  The present invention is widely applicable to work machines including a controller.

1 Driving seat
2 Hinge
3 Controller
4 Harness
5 Base frame
6 Harness entry hole
10 Controller fixing plate
20 Hinge axis (rotating axis)

Claims (1)

  A plate to which the controller is fixed is fixed to the lower part of the operation seat whose front end is pivotally supported, and an intake hole for the controller harness is formed on the rotation shaft side of the upper surface of the plate. A controller arrangement structure of a work machine characterized by the above.

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