JPH10183697A - Panel structure of working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rationally constitute a panel which can be easily assemble without labors, by inserting a case provided with an indication device and an operating tool from the lower side of the panel body against the opening of the upper face of the panel body and connecting the panel body and the case so as to watch the indication device and control the operating tool from the opening. SOLUTION: A panel P is constituted of a panel body 16 forming the external wall and a waterproof hermetically sealing case 17 provided in the inside. An opening 16T is formed at a little hollowed position on the flat face 16S of the panel body 16. The panel P can be assembled by only a simple fitting work of the hermetically sealing case 17 to the panel body 16 and a liquid crystal display covered with a transparent window 19 is provided in the sealing case 17. And an electric switch is constituted of a pressing piece integrally formed with a rubber material. In this way, the sealing property can be easily improved to prevent water or dust from penetrating to the inside. The upper face of such panel body 16 is set to form an inclined posture getting lower at the driver' s seat 8 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an improvement in a panel structure of a working machine.

[0002]

2. Description of the Related Art Taking a backhoe as an example of a working machine configured as described above, a conventional backhoe has a display device for indicating an engine speed, a remaining fuel amount, and the like at a position near a driver's seat. In addition, a panel with operating tools such as switches for controlling the position of the bucket, controlling the number of revolutions of the engine according to the load, etc. is arranged, and when assembling this panel, it is displayed on the panel body. The device and the switches were separately attached.

[0003]

However, in the case where the display devices are separately attached to the panel main body, the work is troublesome when assembling the panel, so that an improvement has been desired. In particular, recent work machines need to be equipped with a large number of switches to perform various types of electric control, and a technique for reducing the labor of panel assembly is desired. There is also a demand for a technique for suppressing intrusion of dust.

[0004] An object of the present invention is to rationally construct a panel which can be easily assembled without any trouble.

[0005]

According to a first aspect of the present invention, an opening is formed in a flat surface of an upper surface of a panel body, and a display device is formed with respect to the opening from a lower side of the panel body. The point is that the panel body and the case are connected so that the display device can be viewed from the opening and the operation device can be operated by inserting the case with the operation device, and the operation is as follows. is there.

A second feature of the present invention (claim 2) is that the panel main body is arranged at a position near a driver's seat,
The point is that the flat surface is set to an inclined posture that becomes lower toward the driver's seat side, and the operation is as follows.

A third feature of the present invention (claim 3) is that the display device is constituted by a liquid crystal display arranged on the lower surface side of a transparent window on the upper surface of the case, and the operating tool is made of an elastic material on the upper surface of the case. And an electric switch which is turned on and off by elastic deformation by the pressing operation of the pressing piece of the display device,
Each of the operation tools is configured as a waterproof type that prevents water from entering the case, and the operation is as follows.

According to the first feature, when assembling the panel, the case is inserted from the lower side of the panel main body and the panel main body and the case are connected to each other through the opening formed in the panel main body. Thus, the display device provided in the case can be visually recognized, and the operation tool provided in the case can be operated through the opening. In other words, since the display device and the operation tool are provided for the case, the panel can be assembled with only the trouble of attaching the case to the panel body, even if the display device is plural or plural. It will be.

According to the second feature, since the flat surface on the upper surface of the panel is inclined so that it becomes lower toward the driver's seat, water and dust hardly stay on the flat surface on the upper surface of the panel, and the driver sits on the driver's seat. This makes it easy to visually recognize the display contents of the display device and to recognize the position of the operating tool without taking the posture of the worker who looks into the operating apparatus, so that the operating tool can be operated in a comfortable posture.

According to the third feature, since the liquid crystal display is provided in a state where the liquid crystal display is covered with the transparent window of the display device, the waterproofness of the waterproof case can be kept high, and a transparent material for protecting the liquid crystal display is previously provided on the panel body. It is not necessary to equip the waterproof type case with the electric switch, which does not require a gap to allow the operation of the pressing piece because the electric switch is provided with the pressing piece which is turned on and off by elastic deformation. Can be maintained at a high level.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG.
A machine base 3 is provided so as to be rotatable around an axis Y in a vertical posture with respect to a rubber crawler type traveling device 2 having
Equipped with a hydraulic turning motor M for turning the
A backhoe device B is provided at a front position of the machine base 3 by connecting the boom 4, the arm 5, and the bucket 6 in series.
A backhoe is provided with a driving unit E having an engine 7 and a driving unit F having a driving seat 8 on the machine base 3.

The dozer device 1 is constructed so as to be driven up and down by a dozer cylinder C1. The backhoe device B comprises a boom 4 having a base member 4S, an intermediate member 4T and a distal member 4U. Hydraulic pressure that swings the boom 4 with respect to the machine base 3 while allowing the distal end member 4U to freely move in the horizontal direction with respect to the base end member 4S by swingably connecting around the core. Boom cylinder C
4. A hydraulic arm cylinder C5 for swinging and driving the arm 5 with respect to the boom 4, a hydraulic bucket cylinder C6 for swinging and driving the bucket 6 with respect to the arm 5, and
A hydraulic offset cylinder CS that drives the distal end member 4U to move in the lateral direction with respect to the proximal end member 4S of the boom 4 is provided.

As shown in FIG. 2, a pair of right and left traveling control levers 10 and 10 are located at a position in front of the driver's seat 8 of the driving section F.
And a pair of left and right operation levers 11, 11, an operation pedal 13 is provided on the step 12 of the driving unit F, and a panel P is provided on the right side of the driver's seat 8. The traveling operation levers 10 and 10 independently set the driving speed of the left and right crawlers of the traveling device 2 to set the traveling speed and control the steering. The boom cylinder C4 is controlled by the front and rear operation, the bucket cylinder C6 is controlled by the left and right operation, the arm cylinder C5 is controlled by the front and rear operation of the left one, the turning motor M is controlled by the left and right operation, and the left and right directions of the operation pedal 13 are controlled. Is linked with a hydraulic control valve (not shown) so as to control the offset cylinder CS by depressing operation.

As shown in FIG. 2, a lift lever 14 for raising and lowering the dozer device 1 and an accelerator lever 15 for setting the rotation speed of the engine 7 are provided at a front position of the panel P. Also, as shown in FIGS.
Is composed of a panel main body 16 forming an outer wall and a waterproof sealed case 17 provided inside. A flat surface 16S having an inclined posture in which the driver's seat side is lowered is formed on the upper surface of the panel main body 16, and this flat surface is formed. An opening 16T is formed at a position where the surface 16S is slightly depressed. On the upper surface of the sealed case 17, a display device D, a mode switching electric switch S1 as an operation tool, and four selection electric switches S2 and S are provided.
3. The flange portion 17F of the sealed case 17 is fixed to the inside of the panel with screws 18 so that the display device D and the electric switches S1 to S5 are exposed from the opening 16T of the panel body 16. I have.

The display device D comprises a liquid crystal display 20 which is covered with a transparent window 19 formed of a resin plate on the upper surface of a sealed case 17, and the electric switch S
The pressing piece 21A of each electric switch S is integrally formed by projecting the upper surface of the rubber material 21 as a single elastic material, and the pressing piece 21A is connected to the upper surface of the sealing case 17 through an opening 17A. When the pressing piece is pressed, the conductive material on the lower surface side of the pressing piece 21A is brought into contact with the upper surface of a pair of electrodes on the substrate in the sealed case by the elastic deformation of the rubber material 21 to make the electrodes contact each other. Are made to be in a conductive state (not shown). In addition, sealed case 1
An alarm lamp 22 is provided on the upper surface of 7.

The liquid crystal display 20 has a display section 20A for displaying the number of engine revolutions, the remaining amount of fuel, a shortage of engine oil, a decrease in battery voltage, and the like, and a display for showing the operation status of the selection electric switches S2 to S5. The pressing piece 21A that forms the electrical switch S1 to S5 for selection is formed into an elliptical shape that is raised leftward in the plane of FIG. Can be performed in a natural posture, and furthermore, by forming a different number of small projections on the upper surface of the pressing piece 21A, the pressing piece can be identified with the sense of a fingertip.

With the above-described structure of the panel, the panel P can be assembled by simply attaching the sealing case 17 to the panel body 16. The liquid crystal display 20 is provided in a covered state, and the rubber material 2
The electric switches S1 to S1
5, the sealability is easily improved to prevent water and dust from entering. And the panel body 1
By setting the upper surface of 6 to an inclined position in which the driver's seat 8 side is lowered, even when water or dust falls on the upper surface of the panel, natural sliding down is promoted so that water or dust does not stay on the upper surface. At the same time, the operator can easily visually recognize the contents of the liquid crystal display 20 while keeping the posture
The electric switches S1 to S5 can easily and visually grasp the positions of S1 to S5, and can be easily selected in a natural posture of the operator's hand.
S5 can be operated.

[0018]

As a result, a panel which can be easily assembled without any trouble has been rationally constructed (claim 1). In addition, water and dust on the upper surface of the panel are naturally removed, and the display device can be visually recognized and the operation tool can be operated in a reasonable state (Claim 2). No inconvenience occurs in the electric system in the case including the display and the electric switch (claim 3).

[Brief description of the drawings]

FIG. 1 is an overall side view of a backhoe.

FIG. 2 is a plan view of an operation unit.

FIG. 3 is a plan view of a case provided in the panel.

FIG. 4 is a longitudinal sectional front view showing a structure for attaching a case to a panel.

FIG. 5 is a longitudinal sectional front view showing the structure of the case.

[Explanation of symbols]

 8 Driver Seat 16 Panel Body 16S Flat Surface 16T Opening 17 Case 19 Transparent Window 20 Liquid Crystal Display 21A Pressing Piece D Display S Operation Tool

Claims (3)

[Claims] An opening is formed in a flat surface on an upper surface of a panel main body, and a case including a display device and an operation tool is inserted into the opening from a lower side of the panel main body so that the display device can be visually recognized from the opening. The panel structure of the working machine that connects the panel body and the case in a state where it is possible to operate the operating tool 2. The panel structure of a working machine according to claim 1, wherein the panel main body is disposed at a position near a driver's seat, and the flat surface is set to be inclined such that the flat surface becomes lower toward the driver's seat. 3. The display device comprises a liquid crystal display disposed on a lower surface side of a transparent window on an upper surface of a case, and the operation tool is turned on and off by elastic deformation by a pressing operation of an elastic pressing piece on the upper surface of the case. The panel structure of a working machine according to claim 1, wherein the display device and the operating tool are each configured as a waterproof type for preventing water from entering the case.