JP4404306B2 - Arrangement structure of fuse unit in construction machinery - Google Patents

Description

  The present invention belongs to the technical field of a fuse unit arrangement structure in a construction machine such as a hydraulic excavator.

  Generally, in this type of construction machine, when this is a hydraulic excavator, for example, a hydraulic motor, A hydraulic actuator composed of a hydraulic cylinder is provided, and an electrical device for controlling the operation of the hydraulic actuator, an electrical device for various displays, and the like are provided. The hydraulic excavator is provided with fuses having capacities corresponding to respective allowable currents in order to protect each electric device, and these various fuses are one of the fuse units attached to the substrate as a whole. Will be placed in the department. By the way, since the fuse unit needs to be replaced, it is preferable to dispose the fuse unit in a portion having good waterproofness and good access to the outside.

Therefore, a configuration in which the fuse unit is configured to be installed in an electrical component box provided on the side of the driver's seat has been proposed.
JP 2001-213245 A

  However, the above-mentioned conventional one has to increase the size of the electrical component box by providing the fuse unit. In this case, the electrical component box is provided on either the left or right side of the driver's seat. In order not to obstruct getting on and off, an electrical component box is provided on the back side opposite to the getting on and off side. For this reason, about the operation | work which replaces a fuse, there exists a problem that a seat will become obstructive and it will become difficult to do, and the subject which this invention should solve is here.

The present invention has been created in view of the above-described circumstances in order to solve these problems, and the invention of claim 1 is provided with console boxes on the left and right in the cab of a construction machine . When the storage box is provided so as to be separated rearward from the driver's seat , it is formed between the outer side surface of one of the left and right side walls of the storage box and the inner side surface of the cab side wall facing the one side wall. A fuse unit is disposed in the gap, and the front of the gap is covered with an edge member that integrally extends from the front edge of the side wall of the storage box toward the one cab side wall. In this construction, the opening of the fuse unit is provided in the edge member so that the fuse unit can be seen from the front, and a cover body that can be opened and closed is provided in the opening.
And by doing in this way, a fuse unit can be arrange | positioned in a cab using dead space, and the special waterproof structure of a fuse unit can be made unnecessary.
According to a second aspect of the present invention, in the first aspect of the present invention, the fuse unit is formed on the attachment piece formed integrally from the support member for fixing the storage box to the rear wall of the cab toward the one of the cab side walls. It is the arrangement | positioning structure of the fuse unit in the construction machine to which it is attached. By doing in this way, while being able to fix a fuse unit firmly, protection of a fuse unit can be aimed at.
According to a third aspect of the present invention, in the first or second aspect, the fuse unit is provided on the side of the cab where the entrance / exit door is provided, so that the fuse unit can be accessed through an open portion associated with opening the open / close door. It is the arrangement | positioning structure of the fuse unit in the construction machine comprised in this way . In this way, the fuse replacement operation can be performed with good workability.
According to a fourth aspect of the present invention, in the first, second, or third aspect, the fuse unit in the construction machine configured in the duct piping space is formed between the other side wall of the storage box and the cab side wall on the side. It is an arrangement structure. By doing in this way, the space of the both sides of a storage box can be used effectively.

According to the first aspect of the present invention, the fuse unit can be disposed in the cab using the dead space, and a special waterproof structure need not be used.
According to the invention of claim 2, the fuse unit can be firmly fixed and the fuse unit can be protected.
According to the third aspect of the invention, the fuse replacement operation can be performed easily and easily.
By setting it as invention of Claim 4, the space in a narrow cab can be utilized effectively.

Next, an embodiment of the present invention will be described based on the drawings of FIGS.
In the drawings, reference numeral 1 denotes a hydraulic excavator. The hydraulic excavator 1 includes a crawler-type lower traveling body 2, an upper revolving body 3 that is rotatably supported by the lower traveling body 2, and an upper revolving body 3. It is comprised from the front attachment 4 etc. with which it mounts | wears. The upper swing body 3 is provided with a cab 5 located on the left side when the front, rear, left and right are defined with reference to an operator seated on a seat 7 to be described later (hereinafter, the definitions of front, rear, left and right are the same) , Tanks such as a fuel tank and a hydraulic oil tank (not shown), hydraulic devices such as a hydraulic pump and a control valve unit, mechanical devices such as an engine, a radiator, and a battery are mounted.

  Further, the cab 5 is configured with a body frame 6 provided on the upper swing body 3 as a floor surface, and the body frame 6 is provided with a seat (seat portion) 7 on which an operator is seated. Console boxes 8 are provided on the left and right sides of the seat 7, respectively. These console boxes 8 are provided with necessary levers, switches, etc., such as an operation lever 9 for operating the operation of the front attachment 4. Has been.

Reference numeral 10 denotes a support frame (corresponding to a support member of the present invention) 10 supported and fixed to the rear of the seat 7, and the support frame 10 is made of a metal plate material, and is attached to the rear side wall 5 a of the cab 5. It is configured to include a pair of left and right frames 10b and 10a facing the fixed vertical direction. Each of the left and right frames 10b and 10a has an upper half part integrally fixed to the cab rear side wall 5a by means such as screwing, and a lower half part of the left and right frames 10a and 10a. 10d and 10c and horizontal portions 10f and 10e protruding forward after the inclined portions 10d and 10c . The front end portions of the left and right frames 10b and 10a are integrally connected by a connecting frame 10g, whereby the support frame 10 is configured to be substantially U-shaped in plan view.

As is apparent from FIG. 2, a storage box (for example, a lunch box) 11 of the present invention provided so as to be separated rearward from the seat 7 is supported and fixed to the support frame 10 . 11 includes a pair of left and right side walls 11b and 11a , a pair of upper and lower side walls 11c and 11d, and a bottom piece 11e provided on the rear end face side of these side walls 11b, 11a , 11c and 11d. An enclosed storage space H is provided. Further, left and right and upper edge members 11g, 11f , and 11h, which are folded back toward the outer rear side, are integrally extended on the front edge portions of the left and right side walls 11b and 11a and the upper side wall 11c, respectively. the front edge lower edge member 11i extending downwardly is extended integrally.

In the storage box 11 configured as described above, in addition to the support by the left and right frames 10b and 10a, the lower side wall 11d is fixed to the connecting frame 10g via a predetermined integration means, whereby the storage box 11 is stored. The box 11 is set so as to be integrally fixed to the support frame 10 (cab rear side wall 5a). Then, in the state of being integrated with the storage box 11 to the support frame 10, a one of the side walls 5b of the cab 5, in this embodiment, the left side of the sliding door 12 for passenger to the cab 5 is provided and the inner surface of the side wall (left side wall) 5b, the void portion (space) S is formed between the outer surface of the left side wall 11b of the storage box 11. Then, the gap portion S on the left side of the storage box 11, is extended toward the front edge of the left side wall 11b left, the cab left side wall 5b side as that is clear from FIG. 3, 4, 8 edges The front is covered with the member 11g.

On the other hand, in the left frame 10b of the supporting frame 10, the left side edge portion of the portion from the inclined portion 10d extending in the horizontal portion 10f is stay piece 10h erected upward is formed integrally. A mounting piece 10i having a mounting surface facing forward is integrally formed in the stay piece 10h in a bent shape, and a rectangular window 10j is formed in the mounting piece 10i.
Reference numeral 13 denotes a fuse unit in which wiring from various electric devices is made. The fuse unit 13 includes a plurality of fuses 13b arranged in an array on a rectangular substrate 13a, and necessary members are provided. ing. Then, the fuse unit 13 abuts the upper and lower edges of the board 13a on the upper and lower windows 10j of the mounting piece 10i formed on the stay piece 10h from behind, and is screwed together using the screws 13c, thereby supporting the support frame 10. In this fixed state, the portion where the fuse 13b is disposed is configured to be exposed forward from the window portion 10j of the attachment piece 10i .

On the other hand, the left side wall edge member 11g of the storage box 11 for covering the front of the gap portion S, rectangular opening 11h are opened, the opening 11h is mounted to the mounting piece portion 10i of the support frame 10 The fuse 13b is exposed to the front portion from the window portion 10j. Then, the upper and lower openings 11h formed part of the left side wall edge member 11g and the engaging recess 11k is formed, the cover body 14 for opening and closing the opening 11i through these engaging recess 11k is detachably provided ing. As a result, the fuse 13b placement site is configured to be viewed from the front through the opening 11i by opening the cover body 14, and in this state, the operator can see the fuse 13b placement site from the front of the storage box 11. It is set so that the fuse 13b can be replaced.

Reference numeral 15 denotes a lid that can be freely opened and closed to cover the storage space H of the storage box 11.
Incidentally, a plurality of electrical wirings are connected to the fuse unit 13 in a concentrated manner. In this case, a plurality of lead wires are collectively accommodated in the tube 16 and the tube 16 is supported by the support frame 10. Thus, it is considered that the lead wire is not complicatedly routed around the storage box 11.

Further, in this embodiment, in a state of being integrated with the storage box 11 to the support frame 10, the gap portion between the and the other side wall (right side wall) 5c of the cab 5, the right edge member 11f of the storage box 11 There is formed, the gap portion of the right side has a piping space of the duct of the air conditioner, the left and right sides of the storage box 11 is in the effective use configurations.

In the present embodiment configured as described, the fuse unit 13 is provided behind the seat 7 in the cab 5, so that it is not necessary to implement a special waterproof structure in the portion where the fuse unit 13 is provided, and the configuration can be simplified. As a result, the cost can be reduced.
Moreover, the fuse unit 13, a left side wall 11b of the storage box 11 is formed by a sheet 7 rearwardly provide the housing box 11, since it is configured so as to provide the gap portion S of between the left side wall 5b of the cab 5 , a portion to be a dead space between the left side wall 5b of the cab 5 and the storage box 11 can be effectively utilized, there is an advantage that effective use of limited space.
Moreover, in the case where the operator makes a replacement of the fuse 13b, by opening the cover 14 provided openably on the left side wall edge member 11g of the storage box 11, directly front the fuse 13b disposed position of the opening 11h It can be peeked out from above and the replacement work can be easily performed.

  Further, in the embodiment of the present invention, the fuse unit 13 is separately fixed to the support frame 10 installed to provide the storage box 11 in the cab 5, and is interlocked with the storage box 11. It is configured not to. As a result, the fuse unit 13 can be firmly fixed, and the fuse unit 13 can be protected without a problem that a load on the storage box 11 directly acts on the fuse unit 13.

Further, in this one, the fuse unit 13, the storage box 11 and the sliding door 12 for passenger to the cab 5 is provided between the side of the left side wall 5b provided. For this reason, by opening the sliding door 12 while the operator has descended from the cab 5, it becomes possible to directly access the fuse unit 13 through the open portion, and other members must be replaced when replacing the fuse 13b. There is no problem that interferes with work, and workability can be improved.

In addition, this compound, the gap portion S of the one (left side) of the storage box 11 is used to provide a fuse unit 13, the gap portion of the other (right side) used for piping space of the air conditioning duct As a result, the narrow space can be used more effectively.

1 is an overall perspective view of a construction machine. It is a right side view of the cab portion. It is a perspective view of a cab part. It is a perspective view of the principal part. It is a front view of a storage box. It is a left side view illustrating the supporting state of the supporting frame of the storage box. It is a bottom view explaining the support state to the support frame of a storage box. It is a rear view explaining the support state to the support frame of a storage box.

Explanation of symbols

1 hydraulic excavator 3 upper structure 5 cab 5b left side wall 7 the seat 10 the support frame 10h scan - tape piece 10i mounting piece portion 10j window portion 11 accommodating box 11b left side wall 11g edge member 13 fuse unit 14 cover

Claims (4)

When the storage box is provided in the cab of the construction machine so as to be separated rearward with respect to the driver's seat provided with the console box on the left and right, the outer side surface of either the left or right side wall of the storage box and the one the fuse unit is disposed in the gap portion formed between the inner surface of the cab side wall opposite the side wall of the front of the gap portion, the one of the cab side wall from the front edge portion of the side wall of the storage box The cover is covered with an edge member that integrally extends toward the front, and an opening is provided in the edge member so that the fuse unit can be viewed from the front, and a cover body that can be opened and closed is provided in the opening. Construction structure. In the construction machine according to claim 1, wherein the fuse unit is attached to an attachment piece integrally bent from the support member for fixing the storage box to the rear side wall of the cab toward the one side wall of the cab . Arrangement structure of fuse unit. 3. The construction according to claim 1 or 2, wherein the fuse unit is provided on the side of the cab where the entry / exit door is provided, and the fuse unit can be accessed through an open portion associated with opening the door. Arrangement structure of fuse unit in machine.   4. A fuse unit disposition structure in a construction machine according to claim 1, 2, or 3, wherein a space between the other side wall of the storage box and the cab side wall on the side is formed in a duct piping space.

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