JPS643691Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a means for fixing a seat for a self-propelled agricultural vehicle such as a combine harvester or an earthmoving vehicle.

In this type of seat, in order to freely open the upper surface of the engine room below the seat, the lower end of the front end is pivoted so that the seat can be rotated upwards. There are drawbacks, such as when the aircraft tilts significantly in the longitudinal direction to overcome the obstacles, the seat rotates forward and there is a risk that the driver may be thrown out of the vehicle.

The present invention aims to eliminate the above-mentioned drawbacks and also to make the seat movable in the front and rear directions according to the height of the driver.

This invention provides a lock pin that moves at the same time as the fulcrum pin, as well as a long hole that allows the fulcrum pin to move forward and backward and a plurality of adjustment holes that can freely engage with the lock pin. This allows the position of the seat to be changed in the front-rear direction.

The present invention will be described below based on embodiments shown in the drawings.

1 and 2 show a combine harvester in which the present invention has been implemented, 1 is a seat, 1a is a frame on the left side of the seat, 2 is a driving column, 3 is a gear shift operation lever,
4 is a work equipment operating lever, 5 is a driver's footrest formed by the upper surface of the front end of the chassis, 6 is a traveling device, 7 is a grass divider, 8 is an engine room side cover, 9 is the front side of the fuel tank; An engine, a radiator, and a portion of the fuel tank are housed in an engine room P formed inside the cover 8, the front face 9 of the fuel tank, and below the seat 1. 10
is an air port for supplying air to the air cleaner housed in the upper part Q of the engine room.

The seat 1 is equipped with a fixing device A according to the present invention.
It is equipped to be rotatable around a fulcrum pin (or pivot shaft) 11, and is configured to be able to rotate upward after the locking device B is released by adding a locking device B as necessary. can be done, but usually
The locking device B is omitted, and the top surface of the engine room can be easily opened when supplying fuel from the supply port 9a and inspecting the interior of the engine room P.

The fixing device A of the present invention will be described in detail with reference to FIGS. 3 and 4.

A pair of left and right pivot plates 12, 12' are welded together W.
Fix and integrate them and fix them to the lower surface of the seat 1 with bolts 13, 13'. [Instead of welding, extend the pivot plate 12 upwards, bend it horizontally, fix it to the seat 1 with bolts 13, Pivot plate 12,1
Of course, 2' may be separated.]

The fulcrum pin 11 passes through the hole 14 of the pivot plates 12, 12', and the hole 14 serves as the center of rotation of the seat 1. A support plate 15 and a second support plate 16, the bases of which are fixed, are provided at appropriate locations on the fuselage, such as the front wall side frame of the engine room P and the seat support frame 25. Elongated holes 17 and 18 are provided that are large enough to insert the fulcrum pin 11 in the direction and move the fulcrum pin back and forth.

In addition to the elongated hole 17, the support plate 15 has two or more appropriate longitudinal adjustment holes 19, which are arranged at the same intervals in the vertical direction with respect to the elongated hole 17 and whose positions are changed in the longitudinal direction of the fuselage. 19' is provided.

Further, the adjustment holes 19, 1 are also provided in the pivot plate 12.
A locking hole 20 is provided below the hole 14 at the same interval as the distance between the long hole 9' and the elongated hole 17.

The upper end of the locking plate 22 is fixed to the tip of the fulcrum pin 11 with a screw 21 (or an appropriate fixing means such as welding), and the adjustment hole 1 is fixed to the lower end of the locking plate 22.
9. Lock pin 23 that can freely engage with locking hole 20,
It is planted so as to protrude toward the pivot plate 12 side. Fulcrum pin 1
The locking plate 22 is connected to the support plate 1 by a compression spring 25 interposed between the head 24 of the first support plate 1 and the second support plate 16.
5 side (locking position). Note that instead of the compression spring 25, a support plate 26 and a locking plate 22 are fixed to the fuselage as shown by imaginary lines on the right side of FIG.
A compression spring 25' may be provided between the two.
That is, the compression spring 25 can have any structure and position as long as it can bias the locking plate 22 to the locking position.

When moving the seat 1 from the front position shown in FIG. 4 to the rear position shown in FIG. 6, as shown in FIG.
4, the lock pin 23 is inserted into the locking hole 2.
0 and the adjustment hole 19, and the locking effect on the movement of the pivot plate 12 is released. Thereafter, by moving the seat 1 backward, the locking hole 20 is placed in a position facing the adjustment hole 19', and by releasing the hand from the head 24 of the fulcrum pin 11, the locking pin 23 is locked into the locking position shown in FIG. It returns to its position and prevents the seat from rotating.

In the embodiment, the head of the fulcrum pin 11 is located on the outside of the fuselage, but it is located on the inside and the support plate 15 and the second
The position of the support plate 16 may be reversed left and right.

As described above, the present invention allows the seat 1 to rotate freely using the fulcrum pin, prevents the seat from rotating by operating the lock mechanism, and moves the fulcrum pin back and forth along the elongated hole by releasing the lock mechanism. This prevents the seat from rotating when the aircraft is tilted forward or backward due to climbing over ridges or other obstacles, ensuring safety for the driver and allowing the seat position to be moved forward or backward according to the driver's preference. This allows you to maintain a good driving posture at all times.

In addition, the lock mechanism includes a locking hole provided in the pivot plate,
Since it is constructed with a locking plate fixed to the tip of the fulcrum pin and an adjustment hole provided in the support plate that supports the fulcrum pin, the locking mechanism can be centrally located at the seat fulcrum, making manufacturing and maintenance easy.

[Brief explanation of the drawing]

Fig. 1 is a partial right side view of a combine equipped with the seat fixing device of the present invention (the reaping section on the left side of the machine is omitted), and Fig. 2 is a partial plan view of the combine harvester. FIG. 3 is a front view of the seat fixing device of the present invention. FIG. 4 is a sectional view taken along line S--S in FIG. 3. FIG. 5 is a front view similar to FIG. 3 in the unlocked position. FIG. 6 is a sectional view similar to FIG. 4 at the rear position of the seat. 1... Seat sheet, 11... Fulcrum pin, 12...
... Pivot plate, 15 ... Support plate, 17 ... Long hole, 1
9, 19'...adjustment hole, 20...locking hole, 22...
...Lock plate, 25...Compression spring.

Claims (1)

[Scope of utility model registration request] In a seat fixing device that allows a seat to rotate upwardly around a fulcrum pin, a fulcrum pin is provided that passes through a pivot hole in a pivot plate that hangs down from the seat, and is locked to the tip of the fulcrum pin. A plate is attached to the locking plate, and a lock pin is made to protrude toward the pivot plate side, and the fulcrum pin is passed through the elongated hole so that the lock pin can be freely engaged with and moved in the longitudinal direction of the aircraft. A support plate having a plurality of longitudinal adjustment holes is fixed to the fuselage, and the pivot plate is provided with an engagement hole that can be freely engaged with the lock pin, and the locking plate is oriented toward the pivot plate. A seat fixing device comprising a spring for constantly engaging a biasing lock pin with a longitudinal adjustment hole of a support plate.