DESCRIPTION
Invention Title
SEAT BASE SLIDING DEVICE
Technical Field
[0001] The present invention relates to a seat base sliding device applied to a seat of
a heavy machinery such as a loader, an excavator, or the like, and more particularly, to a
seat base sliding device capable of preventing a cabin from interfering with control
stands disposed at both left and right sides of a seat at the time of assembling the cabin
or control levers at both left and right sides from interfering with a corresponding thigh
of a driver at the time of adjusting the control levers laterally after assembling the cabin.
Background Art
[0002] In general, a loader is widely used to perform an excavating operation for
excavating soil, sand, and the like, a transporting operation for transporting the
excavated soil and sand, a loading and unloading operation for loading or unloading the
transported soil and sand to or from a truck, a road leveling operation, a snow-removing
operation, a towing operation, and the like in construction sites.
[0003] The loader is configured in a structure including a boom installed at the front
side of a vehicle and operated by a boom cylinder and a bucket rotatably fixed to the
front end of the boom and operated by a bucket cylinder.
[0004] An excavator performs various operations such as excavation, earth leveling,
earth tramping,lifting of a heavy object, and the like. A working machine of the
excavator is constituted by a boom, an arm, and a bucket and an operation of the
excavator is performed by controlling the working machine constituted by the boom,
arm, and bucket through each corresponding hydraulic cylinder.
[0005] FIG 1 is a schematic perspective view showing a state in which a cabin is

assembled to a seat device of an excavator in the related art.
[0006] The seat device 1 in the related art includes a suspension assembly 2 mounted
on a floor (not shown) of a vehicle body, a seat base 3 installed in the top of the
suspension assembly 2, and a seat 4 fixed to the top of the seat base 3.
[0007] Herein, control stands 5 are provided at both left and right sides of the seat
base 3 and each control stand 5 includes a control lever 6.
[0008] Since the seat base 3 of the seat device 1 in the related art is fixed at an initial
mounting position, inconvenience in which interference between each control stand 5
and a thigh of a driver occurs is accompanied at the time of controlling the control lever
6 on each control stand 5 from the left side to the right side after assembling.
[0009] Meanwhile, as shown in FIG 1, the cabin 7 (alternatively, an operating room
structure) is assembled down from the top to the bottom around the seat device 1
configured as above.
[0010] However, the size of the general cabin is defined by law for safety and there
is a limit to ensure a drive space of the driver described above by the cabin having the
limited size. Therefore, in the related art, as described above, a method of assembling
the cabin 7 after disposing the control stand 5 at the outermost side of the seat device 1
by considering the driver's space may be adopted. However, in this case, the cabin 7
knocks against both control stands 5 of the seat device 1 during assembling, and as a
result, the corresponding control stand is frequently damaged. That is, in the related
art, the drive space could not be sufficiently ensured due to safety and part breakage in
spite of user needs.
Disclosure
Technical Problem
[0011] Therefore, the present invention is contrived to solve the above-mentioned

problems. An object of the present invention is to provide a seat base sliding device
capable of preventing a control stand from being damaged by a cabin at the time of
assembling the cabin around a seat device.
[0012] Another object of the present invention is to provide a seat base sliding
device capable of preventing interference between a control lever and a thigh of a driver
at the time when a driver controls the control lever after assembling the cabin.
Technical Solution
[0013] In order to achieve the objects, the present invention provides a seat base
sliding device including: a seat base with a lower part is fixed to a floor of a vehicle
body and an upper part at which a seat is installed; a sliding plate slidable inwards and
outwards in a lateral direction of the seat base at both left and right sides of the seat base
and in which a control stand is fixed to one side thereof; and at least one adjustment unit
selectively fixing the sliding plate of which the position is determined by sliding
movement to the seat base.
[0014] Further, the present invention further provides the following detailed
exemplary embodiments in regards to the exemplary embodiment of the present
invention.
[0015] According to the exemplary embodiment of the present invention, each
adjustment unit may include the seat base having a through hole, the sliding plate
having a slot extending laterally, and an adjustment member penetrating the slot of the
sliding plate to fit in the through hole of the seat base, and the adjustment member may
press at least one of the seat base and the sliding plate and is selectively fixed thereto to
selectively maintain an interpressing state of the seat base and the sliding plate.
[0016] According to the exemplary embodiment of the present invention, the seat
base sliding device may include: a screw section formed at one side of each adjustment

member; a nut fixed to a lower part of the through hole and coupled with the screw
section; and a cap nut further coupled with the end of the screw section penetrating the
nut when the screw section and the nut are coupled with each other to set an opening
limit of the adjustment member.
[0017] According to the exemplary embodiment of the present invention, the sliding
plate may include a horizontal section fixed to each of both left and right sides of the
seat base through at least one adjustment unit and an inclined section slantly connected
with the horizontal section, and the control stand is connected to one side of the inclined
section.
Advantageous Effects
[0018] The present invention enables each control stand to move to the inside of a
seat device through a sliding unit of the seat device to thereby prevent a cabin from
knocking against both control stands of the seat device at the time of assembling the
cabin around the seat device.
[0019] Further, the present invention enables each control stand to move to a
corresponding inner wall of the cabin through the sliding unit of the seat device to
thereby prevent interference between the corresponding control stand and a thigh of a
driver at the time of operating a control lever of each control stand from the left side to
the right side after assembling.
Description of Drawings
[0020] FIG. 1 is a schematic perspective view showing a state in which a cabin is
assembled to a seat device of an excavator in the related art.
[0021] FIG. 2 is a schematic perspective view showing a seat base sliding device
according to the present invention.
[0022] FIG 3 is a schematic exploded perspective view showing a seat base sliding

device according to the present invention.
[0023] FIG. 4 is a schematic front view showing a seat base sliding device according
to the present invention.
[0024] FIG. 5 is a schematic enlarged diagram showing an adjustment unit of a seat
base sliding device according to the present invention.
[0025] FIG. 6 is a schematic use state diagram of a seat base sliding device
according to the present invention.
Best Mode
[0026] Hereinafter, an exemplary embodiment of a seat base sliding device
according to the present invention will be described below with reference to FIGS. 2 to
6.
[0027] FIG. 2 is a schematic perspective view showing a seat base sliding device
according to the present invention and FIG. 3 is a schematic exploded perspective view
showing a seat base sliding device according to the present invention. Further, FIG. 4
is a schematic front view showing a seat base sliding device according to the present
invention and FIG. 5 is a schematic enlarged diagram showing an adjustment unit of a
seat base sliding device according to the present invention.
[0028] In the following description of the present invention, the same reference
numerals as those in the related art will refer to the same components as those in the
related art for easy understanding.
[0029] The seat base sliding device 10 according to the present invention may
include a seat base 11 in which a suspension assembly (not shown) installed on a floor
(not shown) of a vehicle body is fixed to a lower part thereof and a seat (not shown) is
installed in an upper part thereof, and a sliding plate 14 including a horizontal section
12 fixed to each of both left and right sides of the seat base 11 through at least one

adjustment unit 20 and an inclined section 13 slantly connected with the horizontal
section 12 and each one side connected with a control stand (not shown) through a
fixation unit 15, and being slidable inwards and outwards in a lateral direction of the
seat base 11, as shown in FIGS. 2 and 3.
[0030] As known through the above configuration, in the seat base sliding device 10
according to the present invention, two or four adjustment unit 20 may be installed
between the seat base 11 and the sliding plate 14 and the figures (FIGS. 2 and 3) of the
present invention show a state in which four adjustment unit 20 is installed between the
seat base 11 and the sliding plate 14. When the number of the adjustment unit 20 is
two, a guide section (not shown) is preferably provided integrally or separately at both
sides of the seat base 11 to guide the sliding plate 14 inwards and outwards in the lateral
direction of the seat base 11. In a structure in which the guide section is formed
integrally with the seat base 11, the guide section may be bent such that a corresponding
side portion of the seat base 11 configures a guide rail.
[0031] Meanwhile, the "horizontal section 12" of the sliding plate 14 may have a
shape so that the horizontal section 12 is slidable in the lateral direction of the seat base
11 and the "inclined section 13" may be slantly connected to the horizontal section 12
so that an installation space of the control stand can be maximally ensured between an
inner wall of a cabin (not shown) and the inclined section. In the exemplary
embodiment, as one example, the inclined section 13 has a shape extending
substantially in a vertical direction to the horizontal section. It is preferable that the
inclined section 13 is formed integrally with the horizontal section to improve
processing efficiency thereof.
[0032] By the horizontal section 12 and the inclined section 13, utilizing optimal
space can be expected when connecting the control stand 5 to the seat base 11.

[0033] Further, the seat base sliding device according to the present invention may
be further limited to the following detailed exemplary embodiments in addition to the
above-mentioned basic configuration.
[0034] Each adjustment unit 20 may include the seat base 11 having a through-hole
11a, the horizontal section 12 of the sliding plate 14 having a slot 12a extending in the
lateral direction, an adjustment member 21 including a screw section 21a fitted through
the slot 12a of the horizontal section 12 and the through-hole 11 a of the seat base 11 and
a head portion 21b formed integrally with the screw section, and a nut 22 fixed to a
lower part of each through-hole 11 a of the seat base 11, as shown in FIGS. 3 to 5.
[0035] A washer 23 may be further fitted in the screw section 12a between the head
portion 21b of each adjustment member 21 and the horizontal section 12 of the sliding
plate 14 to increase adhesive strength between the horizontal section 12 and the seat
base 11 (see FIGS. 4 and 5).
[0036] A cap nut 24 may be further provided at a lower end of the screw section 21a
of each adjustment member 21 so as to set an opening limit of the adjustment member
21 (see FIGS. 4 and 5).
[0037] Meanwhile, each fixation unit 15 may be configured as various types of
known unit that can fix the corresponding control stand (not shown) to each inclined
section 13 of the sliding plate 14.
[0038] An operation of the seat base sliding device configured as described above
will be described below with reference to FIGS. 2 to 6.
[0039] First, as shown in FIG. 6, when the cabin 7 is assembled around the seat base
sliding device 10, the adjustment member 21 of the adjustment unit 20 provided at each
of both sides of the seat base 11 is turned in a releasing direction and thereafter, the
corresponding sliding plate 14 moves to the inside of the seat base 11.

[0040] In this case, the control stand 5 provided at the side of each sliding plate 14
also moves toward the center of the seat base 11 along the corresponding sliding plate.
Further, in the case of the exemplary embodiment in which the cap nut 24 is further
adopted at the lower end of the screw section 21a of the adjustment member 21,
releasing of the adjustment member 21 is limited to a predetermined opening limit by
the cap nut 24 (see FIGS. 2 to 5).
[0041] Thereafter, the cabin 7 moves down from the top to the bottom around the
seat base sliding device 10 and is fixed to the floor (not shown) of the vehicle body with
fasteners such as a screw, a bolt, and the like, and thereafter, each sliding plate 14
moves to the corresponding inner wall of the cabin 7 (see FIG. 6).
[0042] Subsequently, the adjustment member 21 of each adjustment unit 20 is turned
in a fastening direction to fix the corresponding sliding plate 14 to the seat base 11. In
this case, the control stand 5 fixed to the side of each sliding plate 14 also moves to the
inner wall of the cabin 7 together with the corresponding sliding plate, such that a gap
between the control stands 5 is widened. As a result, a space between the control lever
6 of each control stand 5 and a thigh of a driver can be significantly secured (see FIG. 6).
[0043] The above-mentioned present invention is not limited to the above-mentioned
exemplary embodiment and the accompanying drawings and it is apparent to those
skilled in the art that simple substitutions, modifications, and changes can be made
within the spirit of the present invention.

CLAIMS
1. A seat base sliding device, comprising:
a seat base 11 with a lower part is fixed to a floor of a vehicle body and an
upper part at which a seat 4 is installed;
a sliding plate 14 slidable inwards and outwards in a lateral direction of the
seat base 11 at both left and right sides of the seat base 11 and in which a control stand 5
is fixed to one side thereof; and
at least one adjustment unit 20 selectively fixing the sliding plate 14 of which
the position is determined by sliding movement to the seat base 11.
2. The seat base sliding device according to claim 1, wherein each adjustment
unit 20 includes the seat base 11 having a through hole 11 a, the sliding plate 14 having a
slot 12a extending laterally, and an adjustment member 21 penetrating the slot 12a of
the sliding plate 14 to fit in the through hole 11a of the seat base 11 a, and
the adjustment member 21 selectively presses at least one of the seat base 11
and the sliding plate 14 and is fixed thereto to selectively maintain an interpressing state
of the seat base 11 and the sliding plate 14.
3. The seat base sliding device according to claim 2, further comprising:
a screw section 21a formed at one side of each adjustment member 21;
a nut 22 fixed to a lower part of the through hole 11a and coupled with the
screw section 21a; and
a cap nut 24 further coupled with the end of the screw section 21a penetrating
the nut 22 when the screw section 21a and the nut 22 are coupled with each other to set
an opening limit of the adjustment member 21.
4. The seat base sliding device according to any one of claims 1 to 3, wherein:
the sliding plate 14 includes a horizontal section 12 fixed to each of both left and right

sides of the seat base 11 through at least one adjustment unit 20 and an inclined section
13 slantly connected with the horizontal section 12, and
the control stand 5 is connected to one side of the inclined section 13.

The present invention discloses a seat base sliding device applied to a seat of
a heavy machinery such as a loader, an excavator, or the like. The seat base sliding
device includes: a seat base 11 with a lower part is fixed to a floor of a vehicle body and
an upper part at which a seat 4 is installed; a sliding plate 14 slidable inwards and
outwards in a lateral direction of the seat base 11 at both left and right sides of the seat
base 11 and in which a control stand 5 is fixed to one side thereof; and at least one
adjustment unit 20 selectively fixing the sliding plate 14 of which the position is
determined by sliding movement to the seat base 11. The present invention is capable
of preventing a cabin from knocking against both control stands of a seat device at the
time of assembling the cabin around the seat device and in addition, preventing the
corresponding control stands from interfering in a thigh of a driver at the time of
operating a control lever of each control stand laterally after assembling the cabin.