JPS5824592Y2 - Agricultural tractor seat support device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a seat support device for an agricultural tractor.

Conventional agricultural tractor sorting support devices have a problem in that the folded portion of the seat bracket tends to bend.

A conventional seat support device will be explained with reference to FIG.

FIG. 1 is a schematic rear view of the seat support device, and the seat bracket 1 is made of silver and gold and consists of a bottom wall 2 and left and right side walls 3.

The bottom wall 2 is fixed to projections 6 provided at four locations on the upper surface of the hydraulic case 5.

A horizontal portion 7 is formed on the side wall 3 by bending the upper end nine times outward.

The front end of the horizontal portion 7 (on the back side in FIG. 1) supports the seat 9 so that it can be tilted forward via a pipe-shaped bearing, cushion material, shaft, etc. (not shown).

The rear end portion (the portion shown) of the horizontal component supports the seat 9 via the cushioning material 10.

In the seat support device having such a structure, there was a problem in that the corner portion A between the bottom wall 2 and the side wall 3 was easily bent.

In order to solve this problem, an attempt was made to connect and reinforce the left and right side walls 3 with a member 4, but in this case, a problem occurred in that the horizontally bent portion B of the upper end of the side wall 3 was easily bent.

Furthermore, since the front part of the seat bracket 1 is connected to the seat via a pipe-shaped bearing or the like, it is reinforced by the seat, and the driver's weight is more on the rear part than the front part of the seat. The above mentioned problem is seat bracket 1
It was noticeable at the rear end.

The present invention consists of a seat bracket consisting of a bottom wall, front and rear walls, and a reinforcing member that connects the front and rear walls, and a U-shaped or L-shaped cross member is fixed to the rear end to support the seat. This increases the strength of the entire device, and will be explained below with reference to the drawings.

In FIG. 2, the seat bracket 11 is composed of a bottom wall 12 formed by sheet metal processing, front and rear walls 13.14 extending upward from the front and rear edges of the bottom wall 12, and a reinforcing member 15 connecting the front and rear walls 13.14. It is.

The width of the seat bracket 11 in the left-right direction of the vehicle body is considerably smaller than the width of the seat 20, as shown in FIG.

The bottom wall 12 includes projections 1 provided at four locations on the top surface of the hydraulic case 16.
Tighten with bolt 18.

A bearing pipe 21 is welded to the upper edge of the front wall 13.

The pipe 21 extends in the vehicle width direction, and both ends are located slightly inside the left and right edges of the seat 20.

As shown in FIG. 3, pins 22 are passed through the pipe 21, and rubber cylindrical cushioning members 23 are fitted to both ends of the pipe 21.
It has elastic support.

There is a plate 2 on the bottom of the seat 20 above the pipe 21.
5 is welded.

A vertical portion 26 is formed by bending both ends of the plate 25 downward at positions that close both ends of the pipe 21, and both ends of the pin 22 are fitted into holes 27 provided in the vertical portion 26.

Thereby, the seat 20 is supported in a state where it can be folded forward.

28 is a washer, and 29 and 30 are fixing pins.

As shown in FIG. 2, three holes 2γ are provided at intervals in the front-rear direction, so that the position of the seat 20 in the front-rear direction can be changed.

The rear wall 14 of the seat bracket 11 has a horizontal portion 31 whose upper end is bent rearward.

A cross member 32 having a U-shaped cross section is welded to the horizontal portion 31.

The cross member 32 has both ends attached to the seat 2 as shown in FIG.
Cushioning material 33 made of hard rubber is located slightly inside the left and right edges of 0 and fixed to the upper surface of both ends with bolts 34 and nuts 35.

The head of the bolt 34 is embedded in the cushion material 33, the threaded portion protrudes from the hole 36 of the cross member 32, and a nut 35 is screwed into the bolt 34 from below.

37 is a plate fixed to the cushioning material 33, and the head of the bolt 34 is fixed to this plate 31, and the bolt 34 is fixed to the plate 31.
This prevents idle rotation.

The cushion material 33 supports the seat 20 on its upper surface.

Even when the driver sits on the seat 20 and a load is applied to the seat support device, the cross member 32 has a cross-sectional shape, and the rear wall 14 extends at an angle nearly perpendicular to the front-rear direction, and has a horizontal portion at its upper end. 31 is formed by bending, the rear portion of the seat support device does not deform in a direction in which the seat 20 shifts from side to side or tilts.

Further, the front wall 13 has an upper edge connected to the seat 20 via a bearing pipe 21.
Since the front end of the seat 20 is reinforced and the load is relatively small, the front part of the seat support device also does not deform in the direction in which the seat 20 shifts from side to side or tilts.

Since the front and rear walls 13 and 14 are connected by the reinforcing member 15,
The seat support device does not deform the seat 20 in a direction in which it shifts back and forth or tilts.

As explained above, according to the present invention, the front and rear walls 13 and 14 connected to the seat bracket 11 by the reinforcing member 15 are provided in order to withstand the deformation force that causes the seat 20 to shift or tilt in the left-right direction. In addition to increasing the strength of the seat support device, a cross member 32 with a U-shaped cross section is arranged at the rear, which was particularly prone to deformation in the past, to increase the strength.

Further, the reinforcing member 15 maintains strength against deforming force that causes the seat 20 to tilt in the front-back direction.

The cross member 32 may have a cross section with a retrograde shape, an L shape, or the like.

The rear cushion material 33 may be fixed to the seat 20 and simply placed on the cross member 32.

[Brief explanation of drawings]

FIG. 1 is a schematic rear view of the conventional example, FIG. 2 is a left side view of the present invention, FIG. 3 is a partially cross-sectional front view of the upper end of the front wall, and FIG. 4 is a schematic rear view of the present invention. 11... Sheetbunakerat, 12...
Bottom wall, 13...front wall, 14...rear wall,
15... Reinforcement member, 16... Hydraulic case (vehicle body main body), 20... Seat, 23...
...Cushion material, 32...Cross member, 33...Cushion material.

Claims (1)

[Scope of utility model registration request] a bottom wall; and front and rear walls extending upwardly from the front and rear edges of the bottom wall;
A seat bracket is constructed with a reinforcing member that connects the front wall and the rear wall, the bottom wall is fixed to the vehicle body, the seat is supported on the upper end of the front wall via cushioning material in a state where it can be folded forward, and the upper end of the rear wall is fixed to the upper end of the rear wall. A seat support device for an agricultural tractor, characterized in that a cross member having a U-shaped or L-shaped cross section extending in the left-right direction of the vehicle body is fixed to the seat, and a cushion material is arranged between the cross member and the seat.