JP7282481B2 - hand lift stopper - Google Patents

Description

TECHNICAL FIELD The present invention relates to wheel chocks for transport equipment such as hand lifts and hand forks.

Forklifts are used to transport heavy objects in warehouses and factories. However, it is necessary to complete a driving skill course to operate a forklift, and because it is difficult to use in narrow spaces, opportunities to use small transport equipment such as handlifts and handforks are increasing. ing. Although this small-sized transport device is sometimes called a hand pallet truck, a pallet jack, or the like, it will be generically referred to as a "hand lift" here.

A handlift consists of a pair of fork arms, a main body frame equipped with a lifting drive that raises and lowers the fork arms, a handle for operating the handlift, front wheels attached to the ends of the fork arms, and rear wheels that act as steering wheels. It is configured. The rear wheels, which are steered wheels, are moved by the operation of the steering wheel, and many of them are horizontally rotatable by 360 degrees in order to secure a tight turning performance.

When parking handlifts in warehouses or factories, wheel stoppers (stoppers) are attached to the rear wheels to prevent self-propelled accidents. Various proposals have been made so far for wheel stoppers for small devices having such wheels. For example, in Patent Document 1, a pair of stopper members, a movement guide means capable of linearly moving the stopper members in the approaching/separating direction, and a separation movement restricting means are provided, and are grounded on the floor surface or the ground. Disclosed is a wheel stop device for a wheel of a small equipment, etc., in which both stopper members are moved so as to sandwich the tread surface of the wheel from both sides, and both stopper members are fixed by a separation movement restricting means, and the wheel of the small equipment, etc. is fixed. It is

Utility Model Registration No. 3083666

However, in the wheel stop device described above, although the pair of stoppers can stop the rotation of the wheels, it is not possible to stop the rear wheels of the handlift from rotating in the horizontal direction.

In addition, when installing the wheel chock, it is necessary to move the stopper member so as to sandwich it from both sides and fix the stopper member by the separation movement restricting means, which complicates the installation process. there is

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a wheel chock suitable for a handlift that can be installed with a simple operation.

In order to solve the above problems, a hand lift stopper according to the present invention is a hand lift stopper that prevents a hand lift, which is a small transport device, from moving by itself, and prevents a steering wheel of the hand lift from turning in a horizontal direction. and a pair of vertical rotation stoppers for restricting the rotation of the steering wheel , the pair of vertical rotation stoppers facing each other, and the hand lift stopper being used for steering the hand lift. While the pair of vertical rotation stoppers are fixed to each other, the lateral rotation stopper and the pair of vertical rotation stoppers are fixed at a distance corresponding to the diameter of the steering wheel of the handlift so as to prevent the rotation of the steering wheel when it is inserted into the wheel. and the vertical rotation stopper are integrated into a U-shape in which the side on the side where the hand lift stopper is inserted is opened in a plan view.

According to this, since the lateral rotation stopper for restricting horizontal rotation and the pair of vertical rotation stoppers for restricting rotation are integrated, it can be easily inserted into the rear wheel of the hand lift. A wheel chock suitable for a rear wheel that can be installed and that also rotates in the horizontal direction to ensure tight turning performance is realized.

Here, the lateral rotation stopping portion includes a wall surface for restricting horizontal rotation of the steering wheel of the handlift, and a side on which the pair of vertical rotation stopping portions are fixed from above the wall surface in a side view. It is preferable that the upper surface extends horizontally on the opposite side and forms a hook shape together with the wall surface, only the wall surface is in contact with the ground, and the surface of the upper surface is provided with a grip portion for an operator to grip. .

According to this, the operator can grip the grip portion and insert the hand lift stopper into the rear wheel of the hand lift, which facilitates the installation work.

Further, it is preferable that the lower side of the upper surface of the horizontal rotation stopping portion and the bottom surface of the vertical rotation stopping portion are opened to form gaps respectively.

According to this, there is little resistance when inserting the stopper into the rear wheel, and the hand lift stopper can be installed with a simple operation.

Further, the vertical rotation stopping portion has a mountain-shaped cross-sectional shape in a cross-sectional view in the side direction, and the cross-sectional shape has an inclined surface that contacts the steering wheel of the handlift, and contacts the steering wheel of the handlift. It preferably has a mountain-shaped cross-sectional shape with the apex shifted to the side of the flat surface .

According to this, only the skirts at both ends of the mountain shape are in contact with the ground, and the bottom surface is open, so that the contact area with the ground can be reduced and the resistance when inserting the hand lift stopper into the rear wheel can be reduced.

As described above, according to the hand lift stopper according to the present invention, the lateral rotation stopper for restricting horizontal rotation and the pair of vertical rotation stoppers for restricting rotation are U-shaped in plan view. Since it is integrated, it can be installed with a simple operation of inserting it into the rear wheel of a hand lift, and a stopper that can also stop the rear wheel that rotates in the horizontal direction can be realized. In addition, since the bottom surface is open to create a gap, resistance when inserting the stopper into the rear wheel is reduced, and the stopper can be installed smoothly.

FIG. 10 shows a hand lift and a hand lift stopper; FIG. 2 is an enlarged view of the rear wheel portion of the hand lift of FIG. 1; Fig. 3 is a perspective view of a hand lift stopper; Fig. 10 is a side view of the hand lift stopper; FIG. 5 is a cross-sectional view taken along line AA of FIG. 4; It is a figure which shows another cross-sectional shape in a vertical rotation stop part.

Hereinafter, a hand lift stopper according to the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a hand lift and a hand lift stopper, and FIG. 2 is an enlarged view of the rear wheel portion of the hand lift.

A hand lift 1 includes a pair of fork arms 3 to be inserted into a pallet for loading cargo, a body frame 5 equipped with a lifting drive device for lifting and lowering the fork arms 3, and a handle 2 for operating the hand lift 1. , a small-sized carrying device equipped with a front wheel 4 attached to the lower end of a fork arm 3 and a rear wheel 6 serving as a steering wheel. In the hand lift 1, the handle 2 is operated to raise the fork arm 3, and the fork arm 3 is lowered by operating a lever provided on the handle 2 or a foot pedal. The rear wheels 6, which are steered wheels, are composed of a plurality of (usually two) wheels, which are moved by the operation of the steering wheel 2 and can rotate 360 degrees in the horizontal direction to ensure a tight turning performance.

The hand lift stopper 10 of the present embodiment is a wheel stopper that prevents the rear wheel 6 of the hand lift 1 from rotating and rotating in the horizontal direction.

FIG. 3 is a perspective view of the hand lift stopper 10. FIG.

The hand lift stopper 10 is generally U-shaped in plan view, and includes a horizontal rotation stopper 11 and a pair of vertical rotation stoppers 12 extending in parallel from the horizontal rotation stopper 11. The stopper 10 is made of metal such as iron. It is a wheel stopper device composed of

The lateral rotation stopper 11 prevents the rear wheel 6 from rotating in the horizontal direction when the hand lift stopper 10 is inserted into the rear wheel 6 of the hand lift 1 . It is the wall surface to which the vertical rotation stopper 12 is attached that restricts the horizontal rotation of the rear wheel 6 . A gripping portion 13 is attached to the upper surface of the lateral rotation stopping portion 11 so that the operator can easily insert the hand lift stopper 10 into the rear wheel 6 of the hand lift 1 .

4 is a side view of the hand lift stopper 10. FIG.

The lateral rotation stopping portion 11 is configured by arranging a wall surface 14 that prevents the rear wheel 6 from rotating in the horizontal direction and an upper surface 15 to which the grip portion 13 is attached in a hook shape. It does not have a bottom surface and forms a gap 16 . In this way, only the wall surface 14 is brought into contact with the ground, and the bottom surface is opened to form a gap 16 to reduce the contact area with the ground, thereby reducing the resistance when inserting the hand lift stopper 10 into the rear wheel 6. It reduces the burden of work. The height of the wall surface 14 is set according to the diameter of the rear wheel 6 of the hand lift 1. When the diameter of the rear wheel 6 is 100 mm to 200 mm, the height of the wall surface 14 is set to 30 mm to 50 mm. is preferred.

The vertical rotation stopping part 12 stops the rotation of the rear wheel 6 when the hand lift stopper 10 is inserted into the rear wheel 6 of the hand lift 1. - 特許庁The longitudinal rotation stopping portion 12 is a pair of a member for stopping the forward rotation of the rear wheel 6 and a member for stopping the backward rotation of the rear wheel 6 and extends in parallel from the lateral rotation stopping portion 11 . It is integrated with the wall surface 14 of 11 by welding or the like.

5 is a cross-sectional view taken along the line AA of FIG. 4. FIG.

The vertical rotation stopping portion 12 has a mountain-shaped cross-sectional shape with the apex at the center in the width direction, and forms a gap portion 17 without a bottom surface. In this way, only the hem portions of both ends of the mountain shape are brought into contact with the ground, and the bottom surface is opened to form a gap portion 17, thereby reducing the contact area with the ground. It reduces resistance and eases the burden of installation work. The distance between the paired vertical rotation stoppers 12 (the distance between the central vertexes of each) is set according to the diameter of the rear wheel 6 of the hand lift 1 . When the diameter of the rear wheel 6 is 100 mm to 200 mm, the distance between the pair of vertical rotation stoppers 12 is preferably 100 mm to 200 mm according to the diameter of the rear wheel 6 . The length of the vertical rotation stopping portion 12 is set according to the width of the rear wheels 6 and the number of the rear wheels 6, and is set to about 200 mm when the rear wheels 6 are generally composed of two wheels. is preferred.

The cross-sectional shape in the lateral direction of the vertical rotation stopper 12 may not be a mountain shape with the center in the width direction as the apex.

FIG. 6 is a diagram showing another cross-sectional shape of the vertical rotation stopper.

The vertical rotation stopping portion 18 has a mountain shape in which the surface that contacts the rear wheel 6 is inclined and the apex is shifted toward the surface that does not contact the rear wheel 6 . Similar to the vertical rotation stopping portion 12, the vertical rotation stopping portion 18 also has a space 19 with an open bottom surface, so that the same effect can be obtained.

When the hand lift stopper 10 configured as described above is inserted into the rear wheel 6 of the hand lift 1, the lateral rotation stopper 11 prevents the rear wheel 6 from rotating in the horizontal direction, and the vertical rotation stopper 12 prevents the rear wheel 6 from rotating in the horizontal direction. to stop the rotation of the rear wheel 6. Since the lateral rotation stopper 11 and the pair of vertical rotation stoppers 12 regulate the longitudinal rotation and lateral rotation of the rear wheel 6, the wheel stopper is suitable for the hand lift 1.例文帳に追加Further, the horizontal rotation stopping portion 11 and the pair of vertical rotation stopping portions 12 are integrated, and the distance between the pair of vertical rotation stopping portions 12 is set according to the diameter of the rear wheel 6, so that the hand can be The lift stopper 10 can be installed by a simple operation of just inserting it into the rear wheel 6 of the hand lift 1. - 特許庁Furthermore, since the bottom surfaces of the lateral rotation stopping portion 11 and the vertical rotation stopping portion 12 are open, there is little friction with the ground when inserting them into the rear wheel 6 . Therefore, not only is the burden of installation work reduced, but also the possibility of generating noise or abrading the ground during insertion and removal can be reduced.

As described above, according to the hand lift stopper according to the present invention, the lateral rotation stopper for restricting horizontal rotation and the pair of vertical rotation stoppers for restricting rotation are integrated in a U-shape in plan view. Therefore, it can be installed with a simple operation of inserting it into the rear wheel of a hand lift, and it is suitable for the rear wheel of a hand lift that can also rotate in the horizontal direction to ensure small turning performance. In addition, since the bottom surfaces of the lateral rotation stopping portion and the vertical rotation stopping portion are open to form a gap, the stopper can be easily installed with little resistance when it is inserted into the rear wheel.

As described above, the hand lift stopper according to the present invention has been described based on the embodiment, but the present invention is not limited to this. Various design modifications are possible, all of which are included within the scope of the present invention.

For example, in the above embodiment, the hand lift stopper is made of metal, but it may be made of wood, or may be made of hard material such as thermosetting resin.

Further, in the above-described embodiment, an example is shown in which the wall surface and the upper surface of the horizontal rotation stopping portion form a hook shape when viewed from the side. A reinforcing beam may be provided on the rear side, or the lateral rotation stopper may be configured only by the wall surface.

Similarly, the vertical rotation stopping part has a mountain shape in cross section, but it is sufficient if the bottom is open. It is good also as a structure like the letter A of the alphabet in cross-sectional view. Also, the vertical rotation stopping portion may be configured only by the inclined surface that contacts the rear wheel.

INDUSTRIAL APPLICABILITY The hand lift stopper according to the present invention is useful as a wheel stopper for small transport equipment such as hand lifts and hand forks.

1 hand lift 2 handle 3 fork arm 4 front wheel 5 body frame 6 rear wheel 10 hand lift stopper 11 lateral rotation stopper 12, 18 vertical rotation stopper 13 grip portion 14 wall surface 15 upper surface 16, 17, 19 gap

Claims (3)

A hand lift stopper that prevents a hand lift, which is a small transportation device, from moving by itself,
a lateral rotation stopper that restricts horizontal rotation of the steering wheel of the handlift;
A pair of vertical rotation stoppers for restricting rotation of the steering wheel,
The pair of vertical rotation stoppers are opposed to each other, and are spaced in accordance with the diameter of the steering wheel of the handlift so that the rotation of the steering wheel is stopped when the handlift stopper is inserted into the steering wheel of the handlift. , with the pair of vertical rotation stoppers fixed to each other, the horizontal rotation stopper and the pair of vertical rotation stoppers are U-shaped in a plan view, and the side into which the hand lift stopper is inserted is open. integrated into the mold ,
The lateral rotation stopper is
a wall surface that regulates horizontal rotation of the steering wheel of the handlift;
Consists of an upper surface extending in the horizontal direction opposite to the side where the pair of vertical rotation stoppers are fixed from the upper part of the wall surface in a side view and forming a hook shape together with the wall surface,
only the wall surface contacts the ground,
A gripping portion for gripping by an operator is provided on the surface of the upper surface
A hand lift stopper characterized by: 2. The hand lift stopper according to claim 1, wherein a lower portion of the upper surface of said horizontal rotation stopper and a lower surface of said vertical rotation stopper are open to form gaps. The vertical rotation stopper is
It has a mountain-shaped cross-sectional shape in a lateral cross-sectional view,
The cross-sectional shape is a mountain-shaped cross-sectional shape in which the surface that contacts the steering wheel of the handlift is inclined and the apex is shifted to the side of the surface that does not contact the steering wheel of the handlift . 3. A hand lift stopper according to item 1 or 2 .

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