JP2002172961A - Driver's seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately adjust a position of an operator seated on a driver's seat. SOLUTION: A support stand plate 12 is provided on a pedestal 9 of the driver seat 9 and a seat side plate 13 is provided on a lower surface of a seat cushion 10. The support stand plate 12 is provided with a slide groove 15 composing a seat support mechanism 14, and a slide pin 16 of the seat side plate 13 is inserted in the slide groove 15. A rear part side of the seat cushion 10 is slid thereby in front and rear direction while being rotated around the support stand plate 12. The support stand plate 12 is provided with plural positioning holes 18 composing a seat position adjustment mechanism 17. An engaging projection part 21 of a rotary lever 19 provided on the seat side plate 13 is selectively engaged with plural positioning holes 18 to fix the seat cushion 10 to the support stand plate 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driver's seat of a vehicle, such as a hydraulic shovel, which is installed on a floor plate of a vehicle and is suitable for use by an operator.

[0002]

2. Description of the Related Art In general, a construction machine such as a hydraulic shovel for excavating earth and sand is provided with a self-propelled vehicle including a traveling body and a revolving body mounted on the traveling body so as to be capable of pivoting. . A driver's seat is provided on the floor board of the revolving unit, and the driver's seat includes a seat support provided on the floor plate of the revolving unit, and a seat seat provided on the seat support and seated by an operator. have.

[0003] Some of the driver's seats of this hydraulic shovel have a structure in which a seat is mounted so as to be movable forward and backward with respect to a seat support (for example, Japanese Patent Laid-Open No. 9-2).
No. 94646, Japanese Utility Model Laid-Open No. 3-88843, etc.).

[0004] In this prior art, the operator:
The seat is moved forward and backward with respect to the seat support table according to the user's physique, preference, and the like, so that operation of the operation lever and the like can be performed in a state where an appropriate sitting posture is secured.

[0005]

By the way, according to the above-mentioned prior art, the seat is provided so as to be movable forward and backward with respect to the seat support, and when the operator sits on the seat, the operator can use his or her own seat. The position of the seat is adjusted to the front and rear with respect to the seat support table according to the physique, preference, and the like.

However, simply adjusting the position of the seat with respect to the seat support in the forward and rearward directions does not necessarily ensure a proper seating posture suitable for the operator, and the operation lever or the like is not always sufficient. There is a problem that the operator is liable to be tired during the operation, and the operability is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and an object of the present invention is to appropriately adjust an operator's sitting posture when sitting on a seat, thereby reducing operator fatigue. It is an object of the present invention to provide a driver's seat of the vehicle.

[0008]

In order to solve the above-mentioned problems, a driver's seat of a vehicle according to the present invention includes a seat support provided on a floor plate of a vehicle and a seat provided on the seat support. And a seat.

A feature of the structure adopted by the invention of claim 1 is that, between the seat support and the seat, the rear side of the seat is rotatable with respect to the seat support.
And a seat support mechanism for movably supporting the seat in a forward and rearward direction, and a front side of the seat for front and rear with respect to the seat support.
A seat position adjusting mechanism fixed so that the position can be adjusted rearward and upward and downward is provided.

With this configuration, when the operator sits on the driver's seat, he first moves the rear side of the seat with respect to the seat support by the seat support mechanism to move the seat back and forth. Then, in this state, the front side of the seat is fixed to the seat support by the seat position adjusting mechanism.

Thus, the seat can be tilted obliquely upward and downward toward the front on the seat support, and the position of the seat can be adjusted forward and backward with respect to the seat support. The adjustment of the inclination angle of the seat with respect to the seat support and the adjustment of the front and rear positions of the seat with respect to the seat support can be performed simultaneously.

According to a second aspect of the present invention, the seat support mechanism is provided on one of the seat support and the seat, and on the other of the seat support and the seat. It comprises a guided member guided in the rotation direction and the front and rear directions by the guide portion.

[0013] With such a configuration, the seat supporting mechanism can be configured such that the guided member provided on the seat side, for example,
It is possible to move forward and backward while rotating with respect to the guide portion provided on the seat base.

According to a third aspect of the present invention, the seat position adjusting mechanism is provided on a front side of the seat support, and is provided with a plurality of positioning portions which are separated from each other in front, rear and up and down directions. An engaging member provided on the front side and selectively engaging with the plurality of positioning portions.

With this configuration, the operator can fix the seat to the seat support by engaging the engaging member provided on the seat with the positioning portion provided on the seat support. it can. Further, by removing the engaging member from the positioning portion, the seat can be moved with respect to the seat support.

Further, according to a fourth aspect of the present invention, in the seat position adjusting mechanism, the seat position adjusting mechanism rotates between a lock position in which the engaging member is engaged with the positioning portion and an unlock position in which the engagement with the positioning portion is released. There is provided a rotating lever to be operated, and biasing means for constantly biasing the rotating lever toward the lock position.

With this configuration, the operator releases the engaging member from the positioning portion by rotating the rotating lever from the lock position to the unlock position against the urging force of the urging means. In this state, the seat can be moved relative to the seat support. Further, when the external force applied to the rotating lever is removed, the rotating lever can be automatically rotated from the unlocked position to the locked position by the biasing means, and the seat can be fixed to the seat support. it can.

Further, according to a fifth aspect of the present invention, the seat position adjusting mechanism includes a plurality of positioning holes provided on the front side of the seat and spaced apart from each other in front and rear directions and upward and downward.
An engaging bolt is provided to be screwed to the front side of the seat support and is selectively engaged with the plurality of positioning holes.

With this configuration, the operator loosens the engagement bolt provided by screwing the seat support, thereby removing the engagement bolt from the positioning hole provided in the seat. Can move the seat relative to the seat support. Further, by fastening the engagement bolt to the seat support, the engagement bolt can be selectively engaged with the plurality of positioning holes, and the seat can be fixed to the seat support.

On the other hand, according to a sixth aspect of the present invention, the seat position adjusting mechanism is formed with a screw hole provided on the front side of the seat and a space above and below the front side of the seat support base. left,
A plurality of bolt insertion holes each including a long hole extending in the right direction; and a fixing bolt for selectively inserting the plurality of bolt insertion holes into the plurality of bolt insertion holes and screwing into the screw holes to fix the seat on the seat support. It consists of:

With this configuration, the operator can move the seat relative to the seat support by removing the fixing bolt from the screw hole of the seat. In addition, the seat can be fixed to the seat support by screwing the fixing bolt into the screw hole of the seat through the bolt insertion hole provided in the seat support.

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a hydraulic excavator according to an embodiment of the present invention; FIG.

FIGS. 1 to 10 show a first embodiment of the present invention.
Embodiment 1 is shown, 1 is a lower traveling body of a hydraulic shovel,
Reference numeral 2 denotes an upper revolving structure that is rotatably mounted on the lower traveling structure 1. The upper revolving structure 2 constitutes a vehicle capable of self-running together with the lower traveling structure 1.

The revolving superstructure 2 is shown in FIGS.
As shown in FIG. 1, a turning frame 3, a counterweight 4 mounted on the rear end of the turning frame 3, an engine (not shown) provided on the front side of the counterweight 4 and mounted on the turning frame 3, etc. Building cover 5
And a cab 6 disposed on the front left side of the revolving frame 3 and having a floor plate 6A and the like. Also,
At the front of the upper revolving unit 2, a working device 7 for excavating earth and sand is provided so as to be able to move up and down.

An operator's seat 8 is located in the cab 6 and provided on the floor plate 6A. The driver's seat 8 includes a seat support pedestal 9 fixed to the floor plate 6A and an upper portion of the pedestal 9. Seat 1 provided on a support plate 12 described later
0, a rear bracket 12B located on the rear side (rear side) of the seat 10 to be described later.
, A seat back mechanism 11 and a seat support mechanism 14 and a seat position adjusting mechanism 17. The backrest 11 is the support base plate 1
2 is fixedly attached to the rear bracket 12B so that the position can be adjusted in the rotation direction.

Numeral 12 is fixedly provided on the upper surface of the pedestal 9,
A support plate that forms a seat support together with the pedestal 9. The support plate 12 is formed in a substantially rectangular flat plate shape, and is integrally attached to the upper surface of the pedestal 9 in abutment. Also, on the front side of the support plate 12,
Left and right front brackets 12A, which are located on both left and right sides and have a rectangular shape whose tip is bent upward in a substantially L-shape,
12A is integrally formed. The front bracket 12A fixes the front side of the seat 10 so that the position can be adjusted using a seat position adjusting mechanism 17 described later.

On the rear side of the support base plate 12,
Left and right rear brackets 12B, 12B each having a trapezoidal shape bent upward in a substantially L shape from both the left and right sides are integrally formed. And this rear side bracket 12B
Is a seat support mechanism 1 to be described later.
4, and the backrest 11 is also supported.

Reference numeral 13 denotes a seat-side plate which is fixed to the lower surface of the seat 10 and constitutes a part of the seat 10. The seat-side plate 13 has a substantially rectangular flat plate shape. And are integrally attached to the lower surface of the panel.

As shown in FIGS. 5 to 8, left and right protruding plate portions 13A, 13 protruding and extending in a plate shape toward both the left and right sides are provided on the front side of the sheet side plate 13.
A is integrally formed. The protruding plate portion 13A of the seat-side plate 13 has its end side substantially upward L
A bent plate portion 13B on the front side bent in a letter shape is formed, and a through hole 13B1 formed of a circular hole is formed in the bent plate portion 13B.

On the rear side of the seat-side plate 13, left and right rear bent plates 13C, 13C bent upward in a substantially L-shape from both the left and right sides are integrally formed. Then, the bent plate portion 13 of the seat side plate 13
B, the bent plate portion 13C is disposed substantially in contact with the front bracket 12A and the rear bracket 12B of the support base plate 12, respectively, and the seat plate 13 is disposed between the front brackets 12A and between the rear brackets 12B. left,
It suppresses rattling to the right.

Reference numerals 14 and 14 denote left and right seat support mechanisms which are located at the rear side of the driver's seat 8 and are provided between the support base plate 12 and the seat-side plate 13. Rear bracket 12B of base plate 12
The slide groove 15 is formed as a guide portion formed of a long groove that is elongated in the front and rear directions. The slide groove 15 is formed on the bent plate portion 13C of the seat-side plate 13 and is inserted into the slide groove 15 so that the slide groove 15 It is constituted by a slide pin 16 as a guided member composed of a circular projection guided along the rotational direction and forward and backward.

In the seat support mechanism 14, the seat pin 10 is moved from the state shown in FIG. 3 to the state shown in FIG. 9 by rotating the slide pins 16 of the seat-side plate 13 in the slide grooves 15 of the support base plate 12. 10 tilts (rotates) up and down with respect to the support base plate 12 (pedestal 9) to the state shown in FIG. 10, and adjusts the inclination angle θ (see FIG. 9) of the seat 10 with respect to the support base plate 12. It is.

Further, the seat support mechanism 14 is configured such that the slide pin 16 slides forward and backward along the slide groove 15 from the state shown in FIG. 3 to the state shown in FIGS. Seat 10 for 12
It also has the function of adjusting the position in the front and rear directions.

Reference numerals 17 and 17 denote left and right seat position adjusting mechanisms provided between the pedestal 9 and the seat 10 at a position in front of the driver's seat 8.
Positioning holes 18, 18,... Serving as a plurality of positioning portions are formed in the front bracket 12 </ b> A of the support base plate 12 so as to be spaced apart from each other in the front and rear directions and in the upward and downward directions. The rotation lever 19 includes a rotation lever 19, an engagement protrusion 21 provided on the rotation lever 19, and an urging spring 22 for urging the rotation lever 19.

Reference numeral 19 denotes the protruding plate portion 1 of the seat-side plate 13.
3A, a boss 19A is provided at the base end (rear end) of the turning lever 19, and the boss 19A is connected to the sheet side via a pin shaft 20. It is rotatably attached to the protruding plate portion 13A of the plate 13.

The pivot lever 19 has a grip 19B at the tip end (front end), and projects forward from between the seat 10 and the bent plate portion 13B of the seat-side plate 13. Further, an extension plate portion 1 that extends from the boss portion 19A in a substantially rectangular shape is provided on the base end side of the rotating lever 19.
9C is provided.

Reference numeral 21 denotes a through hole 13 of the sheet side plate 13.
B1 is an engaging protrusion as an engaging member which is provided to be inserted into B1 and engages with the positioning hole 18 on the support base plate 12 side. And is integrally formed with a stepped cylindrical shape.
The engaging projection 21 projects from the surface of the rotating lever 19 toward the front bracket 12A of the support base plate 12, and selectively engages with one of the positioning holes 18.

The rotating lever 19 is normally urged by an urging spring 22, as shown in FIG. 7, so that the engaging projection 21 is supported through the through hole 13B1 of the seat side plate 13. It is held at a locked position where it is selectively fitted (engaged) into any of the positioning holes 18 of the plate 12. In this locked position, the upward and downward rotation of the seat 10 and the forward and backward movement of the seat 10 by the seat support mechanism 14 are restricted, and the seat 10 is supported by the support base plate 1.
Fixed to 2.

The turning lever 19 is moved in the direction indicated by the arrow A shown in FIG.
When the rotating operation is performed in the direction against the spring force of the biasing spring 22, the engaging projection 21 is positioned in the positioning hole 1 as shown in FIG.
In the unlock position where the seat 10 is disengaged from the lock position 8, the seat support mechanism 14 allows the seat 10 to move forward and backward, and rotate upward and downward. In this unlocked position, the extension plate portion 19C of the rotation lever 19 is engaged with the bent plate portion 13B of the seat-side plate 13, and further rotation of the rotation lever 19 is restricted.

Reference numeral 22 denotes an urging spring as urging means provided between the seat-side plate 13 and the rotating lever 19.
The biasing spring 22 is composed of a coil spring disposed on the outer peripheral side of the boss 19A of the rotating lever 19, and has one end 21
A is engaged with the rotating lever 19. Also, the urging spring 2
2 is a configuration in which the other end 21B is engaged with the bent plate portion 13B of the seat-side plate 13 to constantly urge the rotating lever 19 toward the lock position in the direction of arrow A 'shown in FIG. It has become.

Reference numeral 23 denotes left and right operation levers (one of which is shown) installed on the left and right sides of the driver's seat 8.
The operation lever 23 controls the operation of the working device 7 and causes the upper swing body 2 to swing. An operation lever 24 for traveling, an operation pedal 25 for traveling, and the like are provided in front of the driver's seat 8. The operation lever 24 and the operation pedal 25 are for driving the lower traveling body 1.

The hydraulic shovel according to the present embodiment has the above-described configuration. The operator operates the operation device 7 or the like by operating the operation lever 23 while sitting on the driver's seat 8, or operates the operation lever 7. 24, operation pedal 2
5, the lower traveling body 1 is caused to travel.

Next, using the seat support mechanism 14 and the seat position adjusting mechanism 17, the seat 10 is moved to the support base plate 1.
The movement when the position is adjusted with respect to 2 will be described.

First, as shown in FIG. 7, the operator moves the turning lever 19 provided on the seat side plate 13 by the arrow A.
8 to the unlocked position shown in FIG. 8 against the spring force of the urging spring 22, and the engaging projection 21 is removed from the positioning hole 18 of the support base plate 12.

Then, in this state, the sheet side plate 13
The slide pin 16 is rotated in the slide groove 15 of the support base plate 12 as shown in FIGS. The adjustment of the inclination angle θ of the seat 10 and the adjustment of the position of the seat 10 with respect to the support plate 12 in the front and rear directions are performed together.

Then, the external force applied to the rotating lever 19 is finally removed, so that the rotating lever 19 is
2 automatically rotates in the direction of the arrow A 'shown in FIG. 8 to the lock position shown in FIG.
8 so that the seat 10 is supported by the support plate 12.
Can be fixed against

Thus, in the present embodiment, by using the seat support mechanism 14 and the seat position adjusting mechanism 17, the seat 10 can be inclined obliquely upward and forward with respect to the seat support 12 as shown in FIGS. Alternatively, the seat 10 can be inclined obliquely downward, or the seat 10 can be moved forward and backward with respect to the seat support 12.

Therefore, the operator's driving posture when seated in the driver's seat 8 can be appropriately adjusted according to his / her preference, physique, etc., and fatigue when operating the operation levers 23, 24 and the like is reduced. Operability and the like can be improved.

Further, in this embodiment, the adjustment of the inclination angle θ of the seat 10 and the adjustment of the front and rear directions can be performed simultaneously by the seat support mechanism 14, and the work of separately performing these adjustments can be reduced. It is possible to omit the work, and to improve the workability and the like when adjusting the seat 10 as described above.

Further, the seat supporting mechanism 14 can be easily constructed by combining the slide groove 15 and the slide pin 16, and the seat position adjusting mechanism 17 also includes a positioning hole 18, a rotating lever 19, an engaging projection 21 and The seat supporting mechanism 1 can be easily configured by using the biasing spring 22.
4. The number of components of the seat position adjusting mechanism 17 can be reduced.

Next, FIGS. 11 to 13 show the second embodiment of the present invention.
The feature of the present embodiment is that the seat position adjusting mechanism provides a plurality of positioning holes in the bent plate portion of the seat side plate, and the plurality of positioning holes in the front bracket of the support plate. The configuration is such that engagement bolts that selectively engage are provided by screwing.

In the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 41 denotes a support plate serving as a seat support according to the present embodiment.
It has left and right front brackets 41A (only one is shown) and left and right rear brackets 41B and 41B, almost in the same manner as the support base plate 12 according to the first embodiment.

Reference numeral 42 denotes a seat-side plate according to the present embodiment, which constitutes a part of the seat 10. The seat-side plate 42 is substantially the same as the seat-side plate 13 according to the first embodiment. It has a portion 42A, a front bent plate portion 42B, and a rear bent plate portion 42C.

Reference numeral 43 denotes a left and right seat position adjusting mechanism (only one is shown) used in the present embodiment. As shown in FIG. 12 and FIG. Front, rear and up,
Positioning holes 44, 44,... Formed as a plurality of positioning portions that are bored separately from each other in the downward direction;
One screw hole 45 provided in the front bracket 41A
And an engaging bolt 4 screwed into the screw hole 45.
6.

Here, the engaging bolt 46 is connected to the bolt head 46.
A and a male screw part 4 integrally formed with the bolt head 46A.
6B, and an engagement protrusion 46C formed at the tip of the male screw portion 46B with an outer diameter substantially corresponding to the positioning hole 44.

Then, the engagement bolt 46 is screwed into the screw hole 45 of the support base plate 41, so that the engagement protrusion 46 is formed.
C selectively engages (fits) with the plurality of positioning holes 44 of the seat-side plate 42, and in this state, fixes the seat 10 to the support base plate 41 as shown in FIG.

Further, by loosening the engagement bolt 46, the engagement projection 4
With the 6C removed from the positioning hole 44, the seat support mechanism 14 allows the seat 10 to move with respect to the support base plate 41.

Thus, also in the present embodiment configured as described above, it is possible to obtain substantially the same operation and effect as in the first embodiment.

Next, FIGS. 14 to 16 show a third embodiment of the present invention.
The feature of this embodiment is that one screw hole is provided in the bent plate portion of the seat-side plate, and the left and right sides of the front bracket of the support plate are spaced apart from each other at the top and bottom. A plurality of bolt insertion holes consisting of oblong holes extending in the direction are provided, and a fixing bolt is selectively inserted into the plurality of bolt insertion holes and screwed into the screw holes, so that the seat seat is fixed to the support plate. Fixed.

In the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 51 denotes a support plate serving as a seat support according to the present embodiment.
Left and right front brackets 51A (only one shown) and
It has right rear brackets 51B, 51B.

Reference numeral 52 denotes a seat-side plate according to the present embodiment, which constitutes a part of the seat 10. The seat-side plate 52 includes a protruding plate portion 52A and a front bent plate portion 52.
B and a rear bent plate portion 52C.

Reference numeral 53 denotes a left and right seat position adjusting mechanism (only one is shown) used in the present embodiment. As shown in FIG. 15 and FIG. One screw hole 54 provided in the plate portion 52B and a front bracket 51A of the support base plate 51
, Which comprise oblong holes extending upward and downward in the left and right directions, for example, three bolt insertion holes 55, 55,... And screw holes 54 selectively inserted into the plurality of bolt insertion holes 55. And a fixing bolt 56 screwed to the fixing member.
The fixing bolt 56 has a bolt head 56A and a male screw portion 56B.

Then, the fixing bolt 56 is screwed into the screw hole 54 so that the front bracket 51A of the support base plate 51 is attached to the seat side plate 52.
The seat 10 is fixed to the support plate 51 in this state. When the fixing bolt 56 is removed from the screw hole 54, the support plate 51 is
The movement of the seat 10 with respect to is allowed.

Thus, also in the present embodiment configured as described above, it is possible to obtain substantially the same operation and effect as in the first embodiment.

In particular, in the present embodiment, the support base plate 51 is sandwiched between the seat-side plate 52 and the fixing bolt 56, so that the fastening position (attachment position) of the fixing bolt 56 to the support base plate 51. Is changed in the length direction of the bolt insertion hole 55, so that the front and rear mounting positions of the seat 10 with respect to the support plate 51 can be continuously changed in the front and rear directions.

In each embodiment, the slide groove 15
Is provided on the support base plate 12 and the slide pins 16 are provided on the sheet-side plate 13 as an example. Alternatively, for example, a slide groove is provided on the sheet-side plate to support the slide pins. It is good also as composition provided in a base plate.

In the first embodiment, a positioning hole 18 as a positioning portion is formed as a circular hole in the support base plate, and an engaging projection 21 engaging with the positioning hole 18 is formed in the rotating lever 19. Is described as an example in the case of forming a stepped cylindrical shape, but instead, for example, the positioning portion is formed as a cylindrical protrusion on the support base plate, and this cylindrical shape is formed on the rotating lever. A configuration may be adopted in which a circular hole that fits (engages) with the projection is formed.

Furthermore, in the first embodiment, the case where a total of nine positioning holes are provided has been described as an example. Alternatively, for example, the number of positioning holes may be set to 10 to 20 or more. These positioning holes may be used to finely adjust the position of the seat, or may be set to eight or less. This is the same for the second embodiment.

In the third embodiment, the case where the number of the bolt insertion holes is set to three has been described as an example. Alternatively, for example, the number of the bolt insertion holes may be set to four or more. The positioning holes may be set and the position of the seat may be adjusted more finely by using these positioning holes, or may be set to two.

On the other hand, in each embodiment, a hydraulic excavator is described as an example of a vehicle. However, the present invention is not limited to this, and can be widely applied to other vehicles such as a hydraulic crane.

[0073]

As described above in detail, according to the first aspect of the present invention, the rear side of the seat can be rotated by the seat support mechanism with respect to the seat support and can be moved forward and rearward. In addition to the support, the front side of the seat support is fixed to the seat support so as to be adjustable in the front, rear and up and down directions by the seat position adjusting mechanism. The adjustment of the inclination angle of the seat and the adjustment of the position of the seat in the front and rear directions with respect to the seat support can be performed simultaneously.

Therefore, the operating posture of the operator when sitting in the driver's seat can be appropriately adjusted according to his / her physique and the like, and the fatigue when operating the operating lever and the like in a construction machine such as a hydraulic excavator can be reduced. In addition, operability and the like can be improved.

According to the second aspect of the present invention, the seat support mechanism is constituted by the guide portion provided on one of the seat support and the seat, and the guided member provided on the other member. The guide member can guide the guided member in the turning direction and the front and rear directions, and by combining the guide portion and the guided member, the entire structure of the seat supporting mechanism can be simplified, and the number of parts can be reduced. Can be planned.

According to a third aspect of the present invention, the seat position adjusting mechanism selectively engages the engaging member provided on the front side of the seat with a plurality of positioning portions provided on the front side of the seat support. Since the engagement member and the positioning portion are used, the overall structure of the seat position adjustment mechanism can be simplified, and the number of components can be reduced.

According to a fourth aspect of the present invention, there is provided a seat position adjusting mechanism for rotating a rotating lever between a locked position and an unlocked position, and urging the rotating lever toward the locked position. With this configuration, the operator can easily move and fix the seat with respect to the seat support simply by turning the turning lever.

Further, according to a fifth aspect of the present invention, the seat position adjusting mechanism is configured to selectively engage the engaging bolt provided on the seat support with a plurality of positioning portions provided on the seat, so that the operator can adjust the position. The seat can be easily moved and fixed almost in the same manner as in the third aspect of the present invention simply by engaging or disengaging the engaging member with the positioning portion.

According to a sixth aspect of the present invention, in the seat position adjusting mechanism, the fixing bolt is selectively inserted into a plurality of bolt insertion holes provided in the seat support. The operator can easily move the seat relative to the seat support in almost the same manner as in the third aspect of the present invention by simply attaching or removing the fixing bolt to or from the screw hole of the seat. Or fixed.

[Brief description of the drawings]

FIG. 1 is an external view showing a hydraulic excavator to which a driver's seat according to a first embodiment of the present invention is applied.

FIG. 2 is an enlarged perspective view showing the inside of the cab in FIG.

FIG. 3 is a partially cutaway front view showing the driver's seat in FIG. 2 in an enlarged manner.

FIG. 4 is a perspective view showing a state in which a driver's seat in FIG. 3 is removed from a base.

FIG. 5 is an exploded perspective view showing a driver's seat in FIG. 4;

FIG. 6 is an enlarged perspective view showing the seat position adjusting mechanism in FIG. 5 in a state where a support base plate and a seat side plate are assembled.

FIG. 7 shows the seat position adjusting mechanism and the like shown by arrows VII-VII in FIG.
It is sectional drawing seen from the direction.

FIG. 8 is a cross-sectional view similar to FIG. 7, illustrating a state in which the rotation lever is rotated to an unlock position.

FIG. 9 is a front view similar to FIG. 3, showing a state in which the seat is inclined obliquely upward toward the front with respect to the support plate.

FIG. 10 is a front view similar to FIG. 3, showing a state where the seat is inclined obliquely downward toward the front with respect to the support plate.

FIG. 11 is a perspective view similar to FIG. 4, showing a driver's seat according to a second embodiment of the present invention.

12 is an exploded perspective view showing a seat position adjusting mechanism and the like in FIG. 11 in an enlarged manner.

FIG. 13 shows a seat position adjusting mechanism and the like shown by arrows XIII in FIG.
It is the expanded sectional view which expanded from -XIII direction.

FIG. 14 is a perspective view similar to FIG. 4, showing a driver's seat according to a third embodiment of the present invention.

15 is an exploded perspective view showing a seat position adjusting mechanism and the like in FIG. 14 in an enlarged manner.

FIG. 16 shows a seat position adjusting mechanism and the like shown by an arrow XVI in FIG.
It is the expanded sectional view which looked at from -XVI direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower traveling body (vehicle) 2 Upper revolving superstructure (vehicle) 6 Cab 6A Floor plate 8 Driver's seat 9 Pedestal (seat support base) 10 Seat seat 12, 41, 51 Support base plate (seat support base) 13, 42, 52 Seat Side plate (seat seat) 14 Seat support mechanism 15 Slide groove (guide portion) 16 Slide pin (guided member) 17, 43, 53 Seat position adjustment mechanism 18, 44 Positioning hole (positioning portion) 19 Rotating lever 21 Engage Projection (engaging member) 22 biasing spring (biasing means) 45, 54 screw hole 46 engaging bolt 55 bolt insertion hole 56 fixing bolt

Claims (6)

[Claims] 1. A driver's seat for a vehicle, comprising: a seat support provided on a floor plate of a vehicle; and a seat provided on the seat support. , The rear side of the seat is rotatable with respect to the seat support, and
A seat support mechanism for movably supporting the seat in a rearward direction, and a seat position adjusting mechanism for fixing a front side of the seat to the seat support so as to be adjustable in front, rearward and upward and downward directions. A driver's seat of a vehicle having a configuration. 2. The seat support mechanism includes a guide portion provided on one of the seat support and the seat, and a guide provided on the other of the seat support and the seat. The driver's seat of a vehicle according to claim 1, wherein the driver's seat is constituted by a guided member guided in a rotation direction and forward and rearward. 3. The seat position adjusting mechanism includes: a plurality of positioning portions provided on a front side of the seat support stand and separated from each other in front, rear, and up and down directions; The driver's seat of a vehicle according to claim 1, further comprising an engaging member provided to selectively engage with the plurality of positioning portions. 4. The rotation mechanism according to claim 1, wherein the seat position adjustment mechanism is rotated between a lock position for engaging the engagement member with the positioning portion and a lock release position for releasing the engagement with the positioning portion. The driver's seat of a vehicle according to claim 3, further comprising a lever, and a biasing unit that constantly biases the rotation lever toward the lock position. 5. The seat position adjusting mechanism includes: a plurality of positioning holes provided on a front side of the seat and spaced apart from each other in front, rear, and up and down directions; 2. An engaging bolt which is screwed and selectively engages with the plurality of positioning holes.
Or the driver's seat of the vehicle according to 2. 6. The seat position adjusting mechanism is formed with a screw hole provided on a front side of the seat, and is formed at an upper and lower interval on a front side of the seat support, and is provided in a left and right direction. A plurality of bolt insertion holes consisting of long holes extending to the plurality of bolt insertion holes, and a fixing bolt for fixing the seat on the seat support by being selectively inserted into the plurality of bolt insertion holes and screwed into the screw holes. The driver's seat of the vehicle according to claim 1 or 2, which is configured.