JPS6225089Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an auxiliary wheel for a binder that is attached to the end of a rotating arm and that allows easy and labor-saving storage and removal operations.

Some binders (particularly single-wheel binders) are equipped with auxiliary wheels that can be stored and taken out in consideration of stability when running on the road. Many of these storage and removal mechanisms have an arm that is rotatable about a support shaft, and an auxiliary wheel is attached to the tip of this arm.

However, with such a configuration, the storing and retrieving operations are not only difficult but also dangerous because the relatively heavy arms and auxiliary wheels must be operated directly by hand or foot.

Therefore, this invention aims to eliminate the above-mentioned drawbacks by providing a lever and using the predetermined operation of the lever to perform the cutting or removal.

Hereinafter, specific embodiments of this invention will be described with reference to the drawings.

Figure 1 is a side view of a binder that embodies this invention, and Figure 2 is an enlarged side view showing the storage and removal states of the auxiliary wheels. provided in the direction. A pair of left and right arms 2, 2 are pivotally mounted at both ends of the support shaft 1 at a width interval approximately equal to the width of the aircraft body, and are rotatable about the support shaft 1. Auxiliary wheels 3, 3 are rotatably pivoted.

When the auxiliary wheels 3, 3 are off the ground and flipped up to the wheel 4 side, this is the storage position when the auxiliary wheels 3, 3 are not in use (for example, in a flat field), and the position is slightly in front of the wheels 4. The operating position C is when it is in use (for example, when driving on the road) when it is in contact with the ground. In order for the auxiliary wheels 3, 3 to rotate from the storage position A to the operating position C, they must first touch the ground, and then move further forward unless the rotational arc digs into the ground and increases the distance to the ground. There is a position that does not reach the action position C, but this is the ground contact position B.

A lever 5 is pivotally attached to the support shaft 1 separately from the arms 2, 2, and a tension spring 8 is hung between pins 6, 7 implanted in appropriate positions of the lever 5 and the arm 2, respectively. . Lever 5 is support shaft 1
The rotation angle is at least between the retracted position A of the auxiliary wheels 3 and the support shaft 1.
It is set in a range beyond a line connecting the centers of C and C, or an extension thereof, and a line connecting the center line of the working position C and the center line of the support shaft 1, or an extension thereof.

As a result of the above, when you want to take out the auxiliary wheels 3, 3, you do not have to take the trouble to operate the heavy wheels with your hands or feet, and move the lever 5 from the rear storage side position A to the front takeout side position B. If the spring 8 is rotated to the above-mentioned position (-), the spring 8 will exceed the above-mentioned - position, and will pull the auxiliary wheels 3, 3 forward to bring them to the above-mentioned ground contact position (B). The auxiliary wheels 3, 3 are stopped at the ground contact position B, but at this time, by pressing the handle 9 of the machine, the distance from the ground can be increased to the extent that the restriction on forward rotation is lifted, and the spring 8 is also By still being below - and firing arms 2 and 2 forward,
The auxiliary wheels 3, 3 easily move into the working position C. Note that the fact that this ground contact position B is located just in front of the wheel 4 means that the amount of pressure required to hold the handle 9 can be reduced.

Next, when you want to store the auxiliary wheels 3, 3, turn the lever 5 from the take-out side position B to the storage position A, so that the above-mentioned ground action is immediately achieved. Therefore, although it does not go to the storage position A, by pushing down the handle 9 and increasing the distance from the ground of this part to the required extent, it goes all at once to the storage position A and is stored.

As described above, according to this invention, since the dedicated lever 5 is used for storing and taking out the auxiliary wheels 3, 3, the storing and taking out operations of these auxiliary wheels 3, 3 are extremely easy and safe. Become something.

[Brief explanation of the drawing]

The figures show a specific example of this invention, with FIG. 1 being a side view of the binder, and FIG. 2 being an enlarged side view of the main parts thereof. Symbol, 1...Support shaft, 2...Arm, 3...Auxiliary wheel, 4...Wheel, 5...Lever, 8...Spring, A...Auxiliary wheel storage position, C...Auxiliary wheel action position.

Claims (1)

[Scope of utility model registration request] An auxiliary wheel for a binder that is attached to the end of an arm that rotates around a support shaft located slightly in front of the wheel, and can be freely switched between a storage position and an operating position. A spring is hung between this lever and the arm, and the lever is connected to at least a line connecting the retracted position of the auxiliary wheel and the support shaft, a line connecting the operating position and the support shaft, or an extension thereof. An auxiliary wheel for a binder characterized by being able to rotate within a range that exceeds the line.