JPS6310341Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seat height adjustment mechanism provided in a vehicle for agricultural or civil engineering use, such as a combine harvester.

Conventionally, in this type of seat, as shown in FIG. 1, a locking pin 13 is also fixed horizontally to the lower end side of the leg portions 12 fixed on the left and right sides at the front part of the bottom surface of the seat frame 1.
This locking pin 13 was constructed to engage with a recessed notch hole 16 in a support plate 15 that stood vertically from the mounting base 14. Therefore, the vehicle can be tilted forward using the front leg portion 12 as a fulcrum to clean the vehicle floor below the seat. However, since the entire load of the seat is applied to the locking pin 13, there is a risk that the locking pin 13 may be bent or deformed, making it impossible to adjust the height of the seat. Further, in such conventional products, it is difficult to easily remove the seat from the vehicle body, so there is a problem in that the vehicle floor cannot be cleaned efficiently.

The purpose of the present invention is to eliminate the defects of conventional products as described above.

In order to achieve the above objectives, the present invention is to provide plate-shaped receiving pieces on the leg rods provided on the rear left and right sides of the seat frame so as to be inclined downward in the front, and on the other hand, support plates for the mounting base fixed to the vehicle are provided. The receiving piece and the support plate are made to have the same slope as the receiving piece, so that the receiving piece and the support plate are in surface contact, and the load applied to the leg rod is distributed over the entire mounting base, and the front left and right parts of the seat frame are The lower end of the provided leg rod is provided with a rotating disk with a curved side surface and a locking pin protruding downward from the bottom of the rotating disk, while the front part of the mounting base is provided with a rotating disk with the same slope as the support plate. A support plate having a flat surface and a guide slot formed in the longitudinal direction is provided, and the locking pin of the leg rod is inserted into the guide slot of the support plate, so that the seat is folded forward in a flip-up manner, and The seat can be easily removed from the mounting base, thereby eliminating the defects of the conventional product.

Embodiments of the present invention will be described below based on FIGS. 2, 3, and 4. In the figures, A indicates a leg rod, and the leg rod A extends vertically to the left and right at the front and back of the bottom of the seat frame 1a. At the lower ends of the leg rods A, which are vertically installed and provided on the left and right sides of the rear part, there are a disc-shaped receiving piece 2a that slopes downward in the front, and a locking pin 3a that projects from the bottom surface of this receiving piece 2a. It is provided and detachably mounted on the mounting base B. The seat frame 1a is a frame-shaped closed ring frame 1a', and a back frame constituting a backrest is integrally bent diagonally upward from the closed ring frame 1a'. The leg rods A are pipes vertically welded to the lower surface of the frame constituting the seat portion of the seat frame 1a. Further, the receiving piece 2a is fixed to the lower end of the leg lever A by welding or the like so as to be inclined forwardly downward at the same angle as a support plate 1b', which will be described later.

Further, the locking pin 3a has a head at its tip, and is provided at the center of the bottom surface of the receiving piece 2a to protrude downward at right angles to the inclined surface, and is locked in the locking hole of the support plate 1b'. I'll do what I do.

Figure 2 shows the mounting base B, which is fixed on the vehicle floor below the seat frame 1a.
Support plates 1b and 1b' are provided on the front, rear, left and right sides. The support plates 1b', 1b' provided on the left and right sides of the rear part have the same sloped surface as the flat receiving piece 2a, and locking holes 4b, 4b... are formed on the sloped surface at appropriate intervals in the vertical direction. Provided in multiple stages. And this locking hole 4b...
The locking pin 3 has an upper part with a larger diameter than the head of the locking pin 3a, and a lower part with a smaller diameter than the head of the locking pin 3a.
A can be detachably attached.

On the other hand, a rotating disk 2a with a curved side surface is fixed to the front left and right leg levers A, and a locking pin 3a' is provided protruding from the bottom of the rotating disk 2a'. The contact surface of the support plate 1b at the head is formed into a curved shape.

The vehicle floor side where this locking pin 3a' engages has the same slope as the support plate 1b', and the upper part thereof has a large diameter hole into which the locking pin 3a' is inserted, and a large diameter hole into which the locking pin 3a' is inserted. A guide elongated hole 3b, which communicates integrally with the locking pin 3a' and has a width smaller in diameter than the head of the locking pin 3a', is provided below.

In this way, the receiving pieces 2a provided at the lower ends of the front, rear, left and right leg levers A, A..., and the locking pins 3a, 3 of the rotating discs 2a'...
The seat frame 1a is mounted on the mounting base B by inserting the guide holes 3b and desired locking holes 4b into the inclined surfaces of the front, rear, left and right support plates 1b, 1b'. Then, when the seat frame 1a is shifted upward and lifted, the seat frame 1a comes off from the mounting base B, and the locking holes 4b and 4 at the appropriate positions of the support plate 1b'
The height of the seat can be adjusted by inserting the locking pin 3a provided on the rear leg lever A into b, and in this state, both the locking pins 3a and 3a' fit into the locking holes of the support plates 1b and 1b'. 4b and the back side of the guide slot 3b, so the seat does not tilt forward.

Then, the entire seat is moved rearward and the heads of the locking pins 3a, 3a' are positioned in the large diameter holes of the guide slots 3b and the large diameter holes of the locking holes 4b provided in the support plates 1b, 1b'. By lifting upward, the seat can be completely removed from the mounting base B, and dirt etc. on the seat mounting surface of the vehicle body can be easily cleaned.

Then, insert the rear locking pin 3a into any locking hole 4.
b and push the seat forward, the seat will tilt forward using the pivot plate 2a' provided on the front side as a fulcrum (as shown by the two-dot chain line in Fig. 3).

Since the present invention is constructed as described above, the load of the seat, etc. is not supported by the locking pin alone as in the conventional case, but is supported by the plate-shaped receiving piece provided at the lower end of the leg rod.
Therefore, since the present product supports the load on a surface, the supporting member does not deform and can be used for a long period of time.

In addition, the rear left and right leg rods are detached from the mounts, and the front left and right leg rods are supported by the support plate of the mount with curved side rotation plates, making it easy to move the seat under the front left and right legs. You can move forward mainly in the department. Therefore, it is easy to clean the vehicle floor below the seat. Furthermore, the seat can be moved rearward and easily removed from the mounting base, making it even easier to clean the vehicle floor.

Thus, the intended purpose can be achieved.

[Brief explanation of drawings]

Fig. 1 shows a conventional example, Figs. 2 to 4 show an embodiment of the present invention, Fig. 2 is a perspective view of a mounting base used in the present invention, and Fig. 3 is a perspective view showing the installed state. , FIG. 4 is an enlarged side view of the same part. In the figure, 1a... Seat frame, A... Leg rod,
2a... Receiving piece, 3a, 3a'... Locking pin, B...
Mounting base, 1b, 1b'...support plate, 4b...locking hole.

Claims (1)

[Scope of utility model claims] Vertical leg rods are vertically provided on the front and rear, left and right sides of the bottom surface of the seat frame, and at the lower ends of the vertical leg rods provided on the rear left and right sides of the seat frame, a plate-shaped receiving piece that slopes downward in the front; A locking pin protruding downward from the bottom of the receiving piece is provided, and on the rear left and right sides of the mounting base, a support is provided which has the same slope as the receiving piece and has a large number of locking holes arranged in a multi-tiered manner. A plate is provided, and the locking pins of the leg rods are removably attached to the locking holes of the support plate, and furthermore, the lower ends of the leg rods provided on the left and right sides of the front of the seat frame are provided with side curved pivoting pins. A plate and a locking pin protruding downward from the bottom of the rotary plate were provided, while the front part of the mounting base had the same slope as the support plate, and a guide slot was drilled in the longitudinal direction. A height adjustment mechanism for a vehicle seat, comprising a support plate, and a locking pin of the leg rod inserted into a guide slot of the support plate.