JPS6341486Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a tractor bonnet opening/closing device.

(b) Prior Art Conventionally, the bonnet of a tractor is constructed in the form of a flat plate, and one end of the bonnet is pivotally supported by a hinge.
The technique of fixing the other end with a lever that also serves as an accessory is known.

For example, as in Japanese Utility Model Application Publication No. 54-135419.

(c) Problems to be solved by the invention The invention has an elegant design for the operating lever that locks the bonnet so that it can also be used as an accessory for the tractor body.
It goes without saying that the operation of fixing the bonnet 1 to the bonnet receiver 7 can be performed reliably, but the purpose is to make the part where the operating lever 6 protrudes from the bonnet 1 simple and wasteful. be.

Further, the shape of the operating lever 6 is designed to have a stable structure at the base.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

The periphery of the operating lever shaft 13 that protrudes from the operating lever 6 is expanded to form an operating lever skirt portion 6a, and the coil spring 14 fitted around the operating lever shaft 13 is housed inside the operating lever skirt portion 6a. Then, a donut-shaped operating lever bearing 15 is fitted and arranged around the operating lever shaft 13 from below the coil spring 14, and the operating lever bearing 15 and the operating lever shaft 13 are fitted into the opening of the bonnet 1. A tightening nut 16 is screwed onto the operating lever bearing 15 to clamp and fix the bonnet 1, and a bonnet fixing arm 17 is fixed to the portion where the operating lever shaft 13 protrudes from the tightening nut 16. The bonnet receiver 7 is configured to be held between the bonnet 1 and the bonnet fixing arm 17.

(e) Embodiment The purpose and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

FIG. 1 is an overall side view of the tractor, and FIG. 2 is a drawing showing the inside of the bonnet, in which a battery 2, a radiator 3, an engine 4, etc. are mounted in the bonnet 1 and the lower engine room.

In particular, since the battery 2 and radiator 3 are mounted in the front part of the engine compartment as shown in FIG. 2, it is most desirable to perform inspection and water injection work near the front of the tractor.

Therefore, the bonnet 1 is opened and closed from the front part of the bonnet 1 using the hinge 5 attached to the rear part of the bonnet 1 as a fulcrum.

As a result, inspection of the battery 2 and radiator 3 and water injection work can be performed from any location near the front grill 9 of the tractor.
Moreover, it has a structure that anyone can easily operate.

The opening and closing of the bonnet 1 is performed by rotating an operating lever 6 attached to the front of the bonnet 1.
The bonnet 1 and the bonnet receiver 7 are released from the locked state, and this movement is illustrated in the side sectional views of the operating lever 6 shown in FIGS. 3 and 4 and the plan view shown in FIG. 5.

The structure of the operating lever 6 is such that an operating lever shaft 13 protrudes from the operating lever 6, and the operating lever shaft 1
3 not only protrudes, but also has a skirt-like bulge around the operating lever shaft 13.

Then, a bonnet fixing arm 17 is protruded from a portion where the operating lever shaft 13 protruding from within the operating lever skirt portion 6a protrudes from the lower surface of the bonnet 1.
The bonnet fixing arm 17 and the bonnet 1 sandwich the bonnet receiver 7 on the fixed bonnet side to fix the bonnet 1. 7a is a shock absorber made of rubber or the like.

A coil spring 1 is installed inside the operation lever skirt portion 6a.
4 is provided, and a spring receiver 12 is provided below the coil spring 14.

The operating lever 6 having these components is clamped and fixed to the bonnet 1 via an operating lever bearing 15 that clamps and fixes the bonnet 1, and a tightening nut 16.

The coil spring 14 always has a pushing force and pushes the operating lever 6 upward. In other words, this force causes the bonnet fixing arm 17 to
is lifted upward to sandwich the bonnet receiver 7 together with the bonnet 1.

When the operating lever 6 is released from being fixed, by rotating the operating lever 6, the bonnet fixing arm 17 is also rotated and separated from the bonnet receiver 7. When fixing the operating lever 6, the operating lever 6 is pushed down and rotated. Move the bonnet fixing arm 17 to the lower part of the bonnet receiver 7.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, since a bulge is formed around the operating lever shaft 13 that protrudes from the operating lever 6 to form the operating lever skirt portion 6a, the base of the operating lever 6 can be formed into a stable shape by this portion. I can do it,
This makes it possible to improve the design of the accessory that is also used by the operating lever 6.

Second, since the coil spring 14 is arranged inside the operating lever skirt portion 6a, which is the bulging portion, the coil spring does not protrude from the underside of the bonnet 1, and there is no need to provide a spring plate on the side of the bonnet receiver 7. It is something that is gone.

[Brief explanation of the drawing]

1 is an overall side view of the tractor, FIG. 2 is a sectional side view of the bonnet, FIGS. 3 and 4 are sectional side views of the operating lever, and FIG. 5 is a plan view of the operating lever. 1...Bonnet, 6...Operation lever, 6a...
...Operating lever skirt portion, 7... Bonnet receiver, 13... Operating lever shaft, 14... Coil spring, 15... Operating lever bearing, 16... Tightening nut, 17... Bonnet fixing arm.

Claims (1)

[Scope of utility model registration request] The periphery of the operating lever shaft 13 protruding from the operating lever 6 bulges out to form an operating lever skirt portion 6a, and the coil spring 14 fitted around the operating lever shaft 13 is housed inside the operating lever skirt portion 6a. Then, a donut-shaped operating lever bearing 15 is fitted and arranged around the operating lever shaft 13 from below the coil spring 14, and the operating lever bearing 15 and the operating lever shaft 13 are fitted into the opening of the bonnet 1. A tightening nut 16 is screwed onto the operating lever bearing 15 to clamp and fix the bonnet 1, and a bonnet fixing arm 17 is fixed to the portion where the operating lever shaft 13 protrudes from the tightening nut 16. A tractor bonnet opening/closing device characterized in that a bonnet receiver 7 is held between a bonnet 1 and a bonnet fixing arm 17.