U.S. patent application number 14/416104 was filed with the patent office on 2016-04-28 for cab and work machine.
This patent application is currently assigned to Komatsu Ltd.. The applicant listed for this patent is KOMATSU LTD.. Invention is credited to Masashi HOSHINO, Norihiro IWAHASHI, Akihide NAMURA.
Application Number | 20160114837 14/416104 |
Document ID | / |
Family ID | 52828250 |
Filed Date | 2016-04-28 |
United States Patent
Application |
20160114837 |
Kind Code |
A1 |
IWAHASHI; Norihiro ; et
al. |
April 28, 2016 |
CAB AND WORK MACHINE
Abstract
A base has a second bracket extending toward a back panel. A
controller main body is arranged between the base and the back
panel, and fixed to the second bracket. In a plan view, at least a
part of the controller main body is arranged between the base and
the floor portion so as to overlap with the base, and a bolt fixing
the controller main body to the second bracket is arranged between
a rear end of the base and the back panel.
Inventors: |
IWAHASHI; Norihiro;
(Kyotanabe-shi, JP) ; NAMURA; Akihide;
(Neyagawa-shi, JP) ; HOSHINO; Masashi;
(Hirakata-shi, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
KOMATSU LTD. |
Tokyo |
|
JP |
|
|
Assignee: |
Komatsu Ltd.
Tokyo
JP
|
Family ID: |
52828250 |
Appl. No.: |
14/416104 |
Filed: |
October 24, 2014 |
PCT Filed: |
October 24, 2014 |
PCT NO: |
PCT/JP2014/078330 |
371 Date: |
January 21, 2015 |
Current U.S.
Class: |
296/190.08 |
Current CPC
Class: |
E02F 9/16 20130101; B62D
33/0617 20130101; E02F 9/0858 20130101; E02F 9/261 20130101 |
International
Class: |
B62D 33/06 20060101
B62D033/06 |
Claims
1. A cab comprising: a floor portion; a base arranged on said floor
portion; a driver's seat arranged on said base; a back panel
arranged behind said driver's seat, said base having a bracket
extending toward said back panel; and a controller main body
arranged between said base and said back panel and fixed to said
bracket, in a plan view, at least a part of said controller main
body being arranged between said base and said floor portion so as
to overlap with said base, and a fixing part fixing said controller
main body to said bracket being arranged between a rear end of said
base and said back panel.
2. The cab according to claim 1, further comprising: a cover
covering an upper part of a portion of said controller main body
located between a rear end of said base and said back panel in a
plan view.
3. The cab according to claim 2, wherein said cover constitutes at
least a part of a duct connecting a first ventilating hole provided
at said base and a second ventilating hole provided at said back
panel.
4. The cab according to claim 1, wherein said controller main body
has a connector, and said connector is arranged at a face of said
controller main body on a side of said back panel.
5. The cab according to claim 1, wherein said base has a vertical
plate extending from a side of said driver's seat to a side of said
floor portion, and said bracket has a vertical plate part extending
along said vertical plate and attached to said vertical plate and a
horizontal plate part extending from an upper end of said vertical
plate part toward said back panel.
6. The cab according to claim 1, further comprising: a cable
connected to said controller main body and transmitting a video
signal acquired from a camera, wherein said cable penetrates
through said floor portion and extends from inside to outside of
said cab.
7. A work machine comprising a cab according to claim 1.
Description
TECHNICAL FIELD
[0001] The present invention relates to a cab and a work
machine.
REARGROUND ART
[0002] A controller of a work vehicle is often arranged centrally
behind a driver's seat in a driver's cab since an operation
condition of the controller associated with a vehicle operation can
be confirmed instantly. The controller is accommodated in an oblong
case collectively with equipment such as an MPU (Micro Processing
Unit) associated with a certain function. The controller has on its
outer surface a connector for connection of a cable or the like for
communication with other equipment.
[0003] Such an arrangement of a controller is disclosed in Japanese
Patent Laying-Open No. 2014-136951. According to this publication,
two controllers are arranged in a longitudinal direction at a panel
portion behind a driver's seat.
CITATION LIST
Patent Document
PTD 1: Japanese Patent Laying-Open No. 2014-136951
SUMMARY OF INVENTION
Technical Problem
[0004] However, the number of controllers has been increased
because of advancement in functions of a work vehicle (for example,
information-oriented construction, surrounding monitoring function,
and the like) in recent years. Therefore, there is a problem that
attaching and arranging of controllers will be difficult in view of
securing a space.
[0005] The present invention was made to solve the problem
described above, and its object is to provide a cab and a work
machine to facilitate attaching and arranging controllers even when
the number of controllers is increased.
Solution to Problem
[0006] A cab of the present invention comprises a floor portion, a
base, a driver's seat, a back panel, and a controller main body.
The base is arranged on the floor portion. The driver's seat is
arranged on the base. The back panel is arranged behind the
driver's seat. The base has a bracket extending toward the back
panel. The controller main body is arranged between the base and
the back panel and fixed to the bracket. In a plan view, at least a
part of the controller main body is located between the base and
the floor portion so as to overlap with the base, and a fixing part
fixing the controller main body to the bracket is arranged between
a rear end of the base and the back panel.
[0007] According to the cab of the present invention, at least a
part of the controller main body is arranged so as to overlap with
the base in a plan view. Therefore, the main body can be arranged
on a front side of the cab, and a large space can be secured
between the controller main body and the back panel. Accordingly, a
cable can be readily arranged in the space.
[0008] Moreover, the fixing part fixing the controller main body to
the bracket is arranged at a position between a rear end of the
base and the back panel so as not to overlap with the base.
Therefore, the controller main body can be fixed to the bracket
from above.
[0009] According to the configuration described above, the
controller main body can be arranged in the space between the
driver's seat and the back panel, and an operation of attaching the
controller main body can be readily performed even in a narrow
space between the driver's seat and the back panel.
[0010] In the cab described above, a cover is further provided
which covers an upper part of a portion of the controller main body
located between a rear end of the base and the back panel in a plan
view.
[0011] Accordingly, adhesion of water or dust to the controller
main body can be suppressed by the cover, so that the controller
main body can be protected.
[0012] In the cab described above, the cover constitutes at least a
part of a duct connecting a first ventilating hole provided at the
base and a second ventilating hole provided at the back panel.
[0013] Accordingly, a protective member for the controller main
body and the duct connecting the first ventilating hole and the
second ventilating hole can be formed with an integrated cover.
Moreover, by attaching the cover, the protective member protecting
the controller main body and the duct can be made at the same time,
so that assembling can be readily performed.
[0014] In the cab described above, the controller main body has a
connector, and the connector is arranged at a face of the
controller main body on a side of the back panel.
[0015] According to the cab described above, a large space can be
secured between the controller main body and the back panel.
Therefore, even when a connector is provided at the face of the
controller main body on the side of the back panel, a cable can be
readily connected to the connector.
[0016] In the cab described above, the base has a vertical plate
extending from a side of the driver's seat to a side of the floor
portion. The bracket has a vertical plate part extending along the
vertical plate and attached to the vertical plate, and a horizontal
plate part extending from an upper end of the vertical plate part
toward the back panel.
[0017] By attaching the controller main body on the horizontal
plate part, the controller main body can be arranged at a height
apart from the floor portion. Accordingly, since a height of the
controller main body can be secured, the controller main body is
prevented from being soaked in water when the floor portion is
washed with water. Moreover, when the controller main body is fixed
to the bracket, the controller main body can be held in the state
of being placed on the horizontal plate part. Therefore, an
operation of fixing the controller main body to the bracket can be
readily performed.
[0018] In the cab described above, a cable is further provided
which is connected to the controller main body and transmits a
video signal acquired from a camera. The cable penetrates through
the floor portion and extends from inside to outside of the
cab.
[0019] Accordingly, a signal of an image captured outside of the
cab can be processed by the controller main body arranged inside of
the cab.
[0020] A work machine of the present invention has any one of the
cabs described above.
[0021] According to the work machine of the present invention,
attaching and arranging of the controller can be readily performed
even when the number of controllers is increased.
Advantageous Effects of Invention
[0022] As described above, according to the present invention, a
cab and a work machine can be achieved which facilitates attaching
and arranging of a controller even when the number of controllers
is increased.
BRIEF DESCRIPTION OF DRAWINGS
[0023] FIG. 1 is a perspective view schematically representing a
configuration of a hydraulic excavator according to one embodiment
of the present invention.
[0024] FIG. 2 is a partially enlarged view representing a cab of
the hydraulic excavator of FIG. 1.
[0025] FIG. 3 is an exploded perspective view representing a
configuration in which a controller main body is assembled
according to one embodiment of the present invention.
[0026] FIG. 4 is an assembled perspective view representing a
configuration in which the controller main body of FIG. 3 is
assembled.
[0027] FIG. 5 is a plan view representing a part of the
configuration in which the controller main body of FIG. 4 is
assembled, viewed from a direction of an arrow A of FIG. 4 (in a
direction perpendicular to the floor surface).
[0028] FIG. 6 is a perspective view representing a part of the
configuration in which the controller main body of FIG. 4 is
assembled.
[0029] FIG. 7 is a schematic cross-sectional view taken along the
VII-VII line of FIG. 6.
[0030] FIG. 8 is a plan view of the hydraulic excavator
representing positions of cameras attached to the hydraulic
excavator.
DESCRIPTION OF EMBODIMENT
[0031] In the following, an embodiment of the present invention
will be described with reference to the drawings.
[0032] Firstly, a configuration of a work machine according to one
embodiment of the present invention will be described. In the
following, a hydraulic excavator as one example of a work machine
to which the idea of the present invention is applicable and a cab
used for the hydraulic excavator will be described with reference
to FIGS. 1 and 2. It should be noted that the present invention is
applicable to a hydraulic excavator and also to work machines such
as a crawler dozer, a wheel loader, and the like having a cab.
[0033] FIG. 1 is a perspective view schematically representing a
configuration of the hydraulic excavator according to one
embodiment of the present invention. FIG. 2 is a partially enlarged
perspective view representing a cab of the hydraulic excavator of
FIG. 1.
[0034] As shown in FIG. 1, a hydraulic excavator 20 mainly has a
base carrier 22, an upper revolving unit 23, a work implement 24,
and a controller main body 1. Base carrier 22 is configured to be
self-propelled with rotation of a pair of left and right crawler
belts 22a. Upper revolving unit 23 is revolvably mounted on base
carrier 22. Work implement 24 is axially supported on a front side
of upper revolving unit 23 in an undulating manner. This work
implement 24 has a boom 24a, a dipper stick 24b, a bucket 24c,
hydraulic cylinders 24d, 24e, 24f, and the like.
[0035] Base carrier 22 and upper revolving unit 23 described above
mainly constitute a work vehicle main body. Upper revolving unit 23
has a cab 10 on a front left side of the vehicle main body, and has
an engine compartment 26 accommodating an engine and a counter
weight 27 on a rear side of the vehicle main body. An antenna 29 is
provided on an upper face of upper revolving unit 23.
[0036] As shown in FIG. 2, a cab 10 has an internal space. In the
internal space of cab 10, a driver's seat 11 to be seated by an
operator is arranged. Driver's seat 11 is arranged on a base 4, and
base 4 is arranged on a floor portion 13 of cab 10. A back panel 12
is arranged behind driver's seat 11. Behind back panel 12, an air
conditioning unit 14 is arranged.
[0037] In the internal space of cab 10 and between driver's seat 11
and back panel 12, controller main body 1 is arranged. This
controller main body 1 is fixed to the base. An upper part of
controller main body 1 is covered with a cover 5.
[0038] In the present embodiment, the front/rear and left/right
sides of the vehicle are defined based on an operator to be seated
on operator's seat 11 of cab 10 as a reference. The forward and
rearward directions represent the forward and rearward directions
of an operator seated on driver's seat 11. The leftward and
rightward directions represent the leftward and rightward
directions of an operator seated on driver's seat 11. The upward
and downward directions represent the upward and downward
directions of an operator seated on driver's seat 11. The direction
confronting an operator seated on driver's seat 11 is the frontward
direction, and the direction opposite to the frontward direction is
the rearward direction. The right side and left side in the
sideward direction in the state where an operator seated on
driver's seat 11 confronts the front are the rightward direction
and leftward direction, respectively. The side on feet of an
operator seated on driver's seat 11 is the lower side and the side
on a head is the upper side.
[0039] Next, a configuration of each member used for attaching the
controller main body according to one embodiment of the present
invention will be described with reference to FIG. 3.
[0040] FIG. 3 is an exploded perspective view representing a
configuration in which the controller main body according to one
embodiment of the present invention is assembled. As shown in FIG.
3, an assembly 3 of controller main body 1 and first bracket 2 is
attached to base 4, and an upper part of controller main body 1 is
covered with cover 5.
[0041] Controller main body 1 has a main body part 1a and, for
example, four fixing parts 1b. Main body part 1a has a processing
device such as an MPU inside thereof. For example, two cable
connectors 1c are provided on a face of main body part 1a facing
back panel 12 (FIG. 2).
[0042] Each of four fixing parts 1b is connected to main body part
1a and projects outward from main body part 1a. Two fixing parts 1b
project from one side of main body part 1a, and remaining two
fixing parts 1b project from a side opposite to the one side of the
main body part described above. The one side and its opposite side
from which four fixing parts 1b project are faces different from
the face at which cable connectors 1c are provided. Each of four
fixing parts 1b is provided with a through hole. The number of
fixing parts 1b is not limited to four, and it is all necessary to
be one or more.
[0043] First bracket 2 is a member for fixing controller main body
1 to base 4 and floor portion 13. This first bracket 2 has a plate
part 2a, two leg parts 2b, and two projecting parts 2e. Plate part
2a has through holes 2c, 2d.
[0044] For example, both of two leg parts 2b are connected to plate
part 2a, and extend from plate part 2a toward floor portion 13
(downward) in the same direction. For example, both of two
projecting parts 2e are connected to plate part 2a and extend
upward from plate part 2a in the same direction. The direction in
which projecting parts 2e extend from plate part 2a is opposite to
the direction in which leg parts 2b extend from plate part 2a.
Female thread parts are formed on tips of projecting parts 2e. The
number of each of leg parts 2b and projecting parts 2e is not
limited to two, and is all necessary to be one or more.
[0045] Base 4 is a member for securing a height of driver's seat 11
(FIGS. 1 and 2). Base 4 is also required to attach a sliding rail
(not illustrated) for sliding driver's seat 11 in the frontward and
rearward directions. The sliding rail has a configuration in which
a rail positioning stopper projects downward from an installation
face. Therefore, the sliding rail cannot be directly installed on
floor portion 13, and base 4 is required for installation of the
sliding rail. Moreover, by providing base 4, air transferred from
air conditioning unit 14 (FIG. 2) can be guided to a space between
base 4 and floor portion 13 and sent out from a periphery of
operator's feet.
[0046] Base 4 mainly has a top face part 4a, side face parts 4b,
flange parts 4c, a second bracket 4d, and a vertical plate 4e. Top
face part 4a is a portion on which driver's seat 11 is placed.
Upper ends of side face parts 4b are connected to ends of top face
part 4a, and lower ends of side face parts 4b are connected to
flange parts 4c. Flange parts 4c project sideward from side face
parts 4b. Top face part 4a, side face parts 4b, and flange parts 4c
are integrally formed from one sheet of a plate member.
[0047] A vertical plate 4e is provided to secure a strength of base
4. Moreover, vertical plate 4e is provided so as to close a rear
side of base 4. Accordingly, air transferred to a space between
base 4 and floor portion 13 by air conditioning unit 14 is sent out
by vertical plate 4e not from a rear side of base 4 but from a
front side of base 4.
[0048] Vertical plate 4e is connected to top face part 4a and side
face parts 4b by welding, for example. This vertical plate 4e
extends from the side of top face part 4a (driver's seat) to the
side of floor portion 13. Vertical plate 4e is attached to top face
part 4a at a position apart a predetermined distance from, among
two sides 4aa, 4ab of top face part 4a, one side 4aa to the other
side 4ab. Each of two sides 4aa, 4ab is a side to which no side
face part 4b is connected among four sides of top face part 4a. One
side 4aa corresponds to a rear end of base 4, and the other side
4ab corresponds to a front end of base 4.
[0049] A through hole (first ventilating hole) 4f is formed at
vertical plate 4e. This through hole 4f is a portion serving as a
ventilating hole for allowing air transferred from air conditioning
unit 14 (FIG. 2) to the space between base 4 and floor portion 13
to pass therethrough. Vertical plate 4e has a surrounding part 4ea.
Surrounding part 4ea surrounds at least three sides of through hole
4f (upper part and side parts) and extends toward the side of the
back panel. Surrounding part 4ea has an inverse U-shape when
surrounding part 4ea is viewed from the rear side toward the front
side (in a rear view).
[0050] Second bracket 4d is a portion for fixing assembly 3 to base
4. Second bracket 4d has a horizontal plate part 4da and a vertical
plate part 4db, and has an L-shape in a side view. Horizontal plate
part 4da and vertical plate part 4db are integrally formed from one
sheet of a plate member. Vertical plate part 4db extends along
vertical plate 4e, and is attached to vertical plate 4e by welding,
for example. Horizontal plate part 4da is connected to an upper end
of vertical plate part 4db, and extends toward the side of back
panel 12.
[0051] This horizontal plate part 4da has, when viewed from a
direction perpendicular to floor portion 13 (in a plan view), a
portion overlapping with top face part 4a, and a portion projecting
from a side 4aa of top face part 4a (rear end of base 4) toward the
side of back panel 12. Through holes 4dc are formed at portions
protruding from top face part 4a of horizontal plate part 4da (a
portion between rear end 4aa of base 4 and back panel 12 in a plan
view).
[0052] A partition member 6 is attached to surrounding part 4ea
described above. Partition member 6 is a member for partitioning a
region in which controller main body 1 is arranged and a region for
allowing air transferred from air conditioning unit 14 to pass
therethrough. Partition member 6 extends from surrounding part 4ea
to the side of back panel 12 and is arranged between through hole
4f of vertical plate 4e and second bracket 4d.
[0053] Partition member 6 has a partition part 6a, an upper end
bent part 6b, and a lower end bent part 6c. Partition part 6a is
located between the region in which controller main body 1 is
arranged and the region for allowing air transferred from air
conditioning unit 14 to pass therethrough. Upper end bent part 6b
is bent at the upper end of partition part 6a toward the region for
allowing air transferred from air conditioning unit 14 to pass
therethrough. A through hole 6ba is formed at this upper end bent
part 6a. Lower end bent part 6c is bent at the lower end of
partition part 6a toward the region in which controller main body 1
is arranged.
[0054] Cover 5 mainly has a protective part 5a, a duct top face
part 5b, and a duct side face part 5c. Protective part 5a is a
portion for protecting controller main body 1. Protective part 5a
and duct top face part 5b constitute a top face part of cover 5. A
step may be provided between protective part 5a and duct top face
part 5b.
[0055] Duct side face part 5c is a portion bent downward from an
end of duct top face part 5b. Duct top face part 5b and duct side
face part 5c constitute a part of a duct connecting through hole 4f
provided at base 4 and ventilating hole 12a (FIG. 6) provided on
the side of the back panel. This cover 5 is provided with through
holes 5d, 5e.
[0056] Next, attaching controller main body 1, cover 5, and the
like according to one embodiment of the present invention will be
described with reference to FIGS. 3 and 4.
[0057] FIG. 4 is an assembled perspective view representing a
configuration in which the controller man body of FIG. 3 is
assembled. As shown in FIGS. 3 and 4, fastening members such as
bolts are inserted to both of through holes of projecting parts 1b
and through holes 2d of plate parts 2a. These bolts and nuts (not
illustrated) fasten controller main body 1 and first bracket 2, so
that controller main body 1 is fixed to first bracket 2. Assembly 3
is constituted of controller main body 1 and first bracket 2.
[0058] Fastening members such as bolts 9 are inserted to both of
through holes 2c of plate part 2a and through holes 4dc of second
bracket 4d in this assembly 3. Bolts 9 and nuts (not illustrated)
fasten plate part 2a and second bracket 4d, so that assembly 3 is
fixed to second bracket 4d of base 4. Bolts 9 (fixing parts) are
arranged at positions between rear end 4aa of base 4 and back panel
12 and not overlapping with base 4 in a plan view. In the state
where assembly 3 is attached to second bracket 4d, plate part 2a is
mounted to horizontal plate part 4da of second bracket 4d.
[0059] Cover 5 is attached to first bracket 2 by inserting
fastening members such as bolts to through holes 5d of cover 5 and
screwing them to female thread parts of projecting parts 2e.
Moreover, cover 5 is fixed to partition member 6 by inserting a
fastening member such as a bolt to both of through hole 5e of cover
5 and through hole 6ba of partition member 6 and fastening cover 5
and partition member 6 with the bolt and nut (not illustrated).
[0060] First bracket 2 is fixed to floor portion 13 by fastening
leg parts 2b to floor portion 13 with bolts. Base 4 is fixed to
floor portion 13 by fastening flange parts 4c to floor portion 13
with bolts. Partition member 6 is fixed to floor portion 13 by
fastening lower end bent part 6b to floor portion 13 with bolts.
Cover 5 is also fixed to floor portion 13 by fastening with
bolts.
[0061] Next, a state of attaching controller main body 1, cover 5,
and the like in one embodiment of the present invention will be
described with reference to FIGS. 5 to 7.
[0062] FIG. 5 is a plan view representing a part of the
configuration in which the controller main body of FIG. 4 is
assembled, viewed from the direction of an arrow A of FIG. 4 (in a
direction perpendicular to the floor face). FIG. 6 is a perspective
view representing a part of the configuration in which the
controller main body of FIG. 4 is assembled. FIG. 7 is a schematic
cross-sectional view taken along the line of FIG. 6.
[0063] As shown in FIG. 5, in the state where controller main body
1 is attached to base 4, at least a part of controller main body 1
(a hatched region RA in FIG. 5) overlaps with base 4 in a plan
view. The portion of controller main body 1 overlapping with base 4
is located in the region sandwiched between top face part 4a of
base 4 and floor portion 13.
[0064] In a plan view, a portion of controller main body 1 not
overlapping with base 4 (the portion of controller main body 1
other than hatched region RA) is located between rear end 4aa of
base 4 and back panel 12.
[0065] In a plan view, bolts (fixing part) 9 for fixing assembly 3
(controller main body 1) to second bracket 4d are arranged at
positions not overlapping with base 4, and located between rear end
4aa of base 4 and back panel 12.
[0066] A terminal 7a of a cable 8a and a terminal 7h of a cable 8b
are connected respectively to two connectors 1c (FIGS. 3 and 4)
arranged at a face of controller main body 1 on the side of back
panel 12.
[0067] In a plan view, cover 5 covers an upper part of a portion of
controller main body 1 located between rear end 4aa of base 4 and
back panel 12 (a portion of controller main body 1 not overlapping
with base 4). In a plan view, this cover 5 covers an upper part of
terminal 7a of cable 8a and terminal 7b of cable 8b, and also
covers an upper part of a portion of each cable 8a and cable
8b.
[0068] As shown in FIG. 6, cover 5 constitutes at least a part of
the duct connecting through hole (first ventilating hole) 4f
provided at base 4 and a ventilating hole (second ventilating hole)
12a provided at back panel 12. As shown in FIGS. 6 and 7, a top
face part of the duct connecting through hole (first ventilating
hole) 4f and ventilating hole (second ventilating hole) 12a is
constituted of duct top face part 5b of cover 5. One side face part
of the duct is constituted of duct side face part 5c. The other
side face part of the duct is constituted of partition member 6.
The bottom face part of the duct is constituted of floor portion
13. Ventilating hole 12a provided at back panel 12 is a portion for
allowing air transferred from air conditioning unit 14 (FIG. 2) to
be sent out.
[0069] As shown in FIG. 7, cable 8a connected to controller main
body 1 penetrates through floor portion 13 and extends from inside
to outside of cab 10. This cable 8a is a cable for transmitting a
video signal acquired from a camera, for example.
[0070] As shown in FIG. 8, for example, two cameras 31, 32 are
arranged on a right side part of hydraulic excavator 20, and one
camera 33 is arranged on a left side part, and one camera 34 is
attached to counter weight 27 on a rear side. Signals of images
captured by these cameras 31 to 34 can be sent to controller main
body 1 through cable 8a. In controller main body 1, video signals
of these cameras 31 to 34 are processed, so that an around-view of
work machine 20 can be displayed on a monitor in cab 10.
[0071] Moreover, as shown in FIG. 5, by allowing cable 8a to
penetrate through floor portion 13 in a region RB between base 4
and back panel 12 in a plan view, a distance of extending cable 8a
to controller main body 1 in cab 10 can be shortened.
[0072] Next, effects of the present embodiment will be
described.
[0073] According to the present embodiment, as shown in FIG. 5, at
least a part of controller main body 1 (hatched region RA) is
arranged so as to overlap with base 4 in a plan view. Therefore, as
compared to the case where controller main body 1 does not overlap
with base 4, controller main body 1 can be arranged more on a front
side of cab 10. Accordingly, a large space can be secured between
controller main body 1 and back panel 12, so that cables 8a, 8b and
cable terminals 7a, 7b can be readily arranged in the space.
[0074] Moreover, bolts 9 fixing controller main body 1 to second
bracket 4d are provided at positions between rear end 4aa of base 4
and back panel 12 and not overlapping with base 4. Therefore, bolts
9 can be readily fastened from above, so that controller main body
1 can be readily fixed to second bracket 4d.
[0075] According to the configuration described above, controller
main body 1 can be arranged in the space between driver's seat 11
and back panel 12, and an operation of attaching controller main
body 1 in the narrow space between driver's seat 11 and back panel
12 can also be readily performed.
[0076] Moreover, as shown in FIG. 5, an upper part of the portion
of controller main body 1 located between rear end 4aa of base 4
and back panel 12 in a plan view (the portion of controller main
body 1 not overlapping with base 4) is covered with cover 5.
Accordingly, cover 5 can suppress adhesion of water or dust on
controller main body 1, so that controller main body 1 can be
protected.
[0077] Moreover, as shown in FIG. 6, cover 5 constitutes at least a
part of the duct connecting through hole 4f provided at base 4 and
ventilating hole 12a provided at back panel 12. Accordingly, the
protective member of controller main body 1 and the duct connecting
through hole 4f and ventilating hole 12a can be formed with
integrated cover 5. Moreover, by attaching cover 5, the protective
member protecting controller main body 1 and the duct can be
attached at the same time, so that assembling can be readily
performed.
[0078] Moreover, as shown in FIG. 3, controller main body 1 has
connectors 1c, and connectors 1c are arranged a face of controller
main body 1 on the side of back panel 12. According to cab 10
described above, a large space can be secured between controller
main body 1 and back panel 12. Therefore, even when connectors 1c
are provided at a face of the controller main body on the side of
back panel 12, cables 8a, 8b (FIGS. 5 to 7) can be connected to
connectors 1c.
[0079] Moreover, as shown in FIG. 3, base 4 includes vertical plate
4e. Second bracket 4d has vertical plate part 4db extending along
vertical plate 4e and attached to vertical plate 4e, and horizontal
plate part 4da extending from an upper end of vertical plate part
4db toward back panel 12. By attaching controller main body 1 on
this horizontal plate part 4da, controller main body 1 can be
arranged at a height apart from floor portion 13. Accordingly,
since a height of controller main body 1 can be secured, controller
main body 11 is prevented from being soaked in water when floor
portion 13 is washed with water. Moreover, when controller main
body 1 is fixed to second bracket 4c1, controller main body 1 can
be held in the state of being placed on horizontal plate part 4da.
Therefore, an operation of fixing controller main body 1 to second
bracket 4d can be readily performed.
[0080] Moreover, as shown in FIG. 7, cable 8a connected to
controller main body 1 and transmitting video signals acquired from
cameras 31 to 34 (FIG. 8) penetrates through floor portion 13 and
extends from inside to outside of cab 10. Accordingly, signals of
images captured outside of cab 10 can be processed by controller
main body 1 arranged inside of cab 10.
[0081] In the embodiment described above, the case is described in
which the fixing parts for fixing assembly 3 having controller main
body 1 to second bracket 4d are bolts and nuts. However, the fixing
parts are not limited to those. The fixing parts may be the one
configured to fix by means of other members or methods such as pins
and welding.
[0082] It should be understood that the embodiment disclosed herein
is illustrative and non-restrictive in every respect. The scope of
the present invention is defined by the terms of claims, rather
than the description of the embodiments set forth above, and is
intended to include any modifications within the scope and meaning
equivalent to the terms of the claims.
REFERENCE SIGNS LIST
[0083] 1 controller main body; 1a main body part; 1b fixing part;
1b projecting part; 1c cable connector; 2 first bracket; 2a plate
part; 2b leg part; 2e projecting part; 2c, 2d, 4dc, 4f, 5d, 5e, 6ba
through hole; 3 assembly; 4 base; 4a top face part; 4b side face
part; 4c flange part; 4d second bracket; 4da horizontal plate part;
4db vertical plate part; 4e vertical plate; 4ea surrounding part; 5
cover; 5a protective part; 5b duct top face part; Sc duct side face
part; 6 partition member; 6a partition part; 6b upper end bent
part; 6c lower end bent part; 7a, 7b cable terminal; 8a, 8b cable;
9 bolt; 10 cab; 11 driver's seat; 12 back panel; 12a ventilating
hole; 13 floor portion; 14 air conditioning unit; 20 work machine
(hydraulic excavator); 22 base carrier; 22a crawler belt; 23 upper
revolving unit; 24 work implement; 24a boom; 24b dipper stick; 24c
bucket; 24d hydraulic cylinder; 26 engine compartment; 27 counter
weight; 29 antenna; 31 to 34 camera.
* * * * *