JPH0624297Y2 - Auxiliary wheels for wheelbarrows and wheelbarrows with auxiliary wheels - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an auxiliary wheel and an auxiliary wheel with an auxiliary wheel that are used by being attached to a wheelbarrow for carrying earth and sand, concrete, or harvested agricultural products and other loads. Regarding unicycle.

[Conventional technology]

Generally, this type of wheelbarrow has a pair of fixed rear legs formed of a pipe or the like bent in a V shape at the rear of the frame. However, this rear leg is for temporarily holding the vehicle body on the ground when loading a load or during transportation. During transportation, the two rear lever-like handles are lifted by hand to lift the rear leg. It is necessary to suspend a part of the weight of the load and the car body by hand and push the car body forward while preventing the car body from tipping over to the left or right. This work requires a great deal of labor and habituation. Especially when carrying a heavy load or when carrying it back and forth many times, the fatigue of the worker is notable, and the person who has inferior strength and motor nerves. It was extremely difficult and dangerous.

[Problems to be solved by the device]

The present invention solves the above-mentioned conventional problems, and is an auxiliary wheel for a wheelbarrow that can be extremely easily attached to an existing wheelbarrow, and a wheelbarrow with an auxiliary wheel that can easily carry work. Is to provide.

[Means for Solving the Problems]

However, the auxiliary wheel of the present invention has a U-shaped cross section that can be freely inserted into and removed from the lower end bent portion of the rear leg of the unicycle, and the front shape is substantially L.
A pair of V-shaped mounting brackets, an axle supported by these mounting brackets, a pair of wheels rotatably mounted on the axles, one end of which is the axle, and the other end of which is the frame of a unicycle. It is an auxiliary wheel for a wheelbarrow, which comprises a pair of turn bags that are hooked to the wheel.

In addition, the hand-held unicycle with auxiliary wheels of the present invention has a pair of mounting brackets having a U-shaped cross section and a substantially L-shaped front shape that can be fitted into and removed from the lower end bent portion of the rear leg of the hand-held unicycle. An axle supported by a mounting bracket, a pair of wheels rotatably attached to the axle, a pair of turn bags having one end attached to the axle and the other end attached to a frame of a wheelbarrow. Then, the hand-held unicycle with auxiliary wheels is characterized in that the mounting metal fitting is fitted into the lower end bent portion of the rear leg, and the axle and the frame are fastened by the turn bag.

[Action]

In the auxiliary wheel of the present invention, the mounting metal fitting is fixed to the rear leg by fitting the mounting metal fitting to the lower end bent portion of the rear leg of the wheelbarrow, and fastening the axle and the frame of the handwheel monocycle with the turnback. Since the axle including the wheels is supported by the mounting bracket, the auxiliary wheel can be quickly and easily mounted on the hand wheeled unicycle by an extremely simple work of fitting the mounting bracket into the rear leg and tightening the turn bag.

Further, the wheelbarrow with auxiliary wheels of the present invention has the wheels supported by the axle at the lower end of the rear leg, and if the wheelbarrow is pushed while the wheels are grounded, the vehicle body will have two front wheels and two auxiliary wheels. It is supported at three points by wheels, and can be transported safely and easily without tilting or falling.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

In the drawings, FIG. 1 shows an auxiliary wheel 1 of the present invention, 2 is a U-shaped cross-section, and a mounting metal fitting is formed by bending a front shape into a substantially L shape, and holes provided at the corners thereof. A round rod-shaped axle 4 is movably inserted through 3 with a small clearance.
Reference numeral 5 denotes wheels with solid tires rotatably attached to both ends of the axle 4. Reference numeral 6 is a turn bag, and key portions 7a and 8a are formed at the tips of the screw rods 7 and 8, respectively.

2 to 4 show a hand wheelbarrow 10 with auxiliary wheels 1 attached, 11 is a frame of the wheelbarrow 10 and 12 is a container-like container fixed to the frame 11 and opening upward. It is a loading section. A large-diameter front wheel 13 with a pneumatic tire is pivotally supported on the front portion of the frame 11. Reference numeral 14 denotes a pair of left and right rear legs formed on the rear side of the frame 11, which is formed by bending a pipe in an L shape, and a lower end bent portion 14a thereof is curved in an arc shape. 1
Reference numeral 5 denotes a reinforcing column for connecting the lower end bent portion 14a and the upper side frame 16, and the left and right columns 15, 15 are connected by a horizontal beam 17 made of a pipe. In the auxiliary wheel 1, the mounting bracket 2 is fitted to the lower end bent portion 14a of the rear leg 14, the hook portion 7a of the turn bag 6 is attached to the axle 4, and the hook portion 8a is attached to the cross beam 17 forming a part of the frame 11. They are attached to the frame 11 by hooking them and tightening the turn bag 6.

Since the mounting bracket 2 has a U-shaped cross section with an opening width slightly larger than the diameter of the pipe material forming the rear leg 14, the mounting bracket 2 is fitted into the rear leg 14 to prevent lateral displacement, and the turn back 6 is tightened. The force exerts an upward force acting on the axle 4 and presses the rear leg 14 from below, so that the rear leg 14 is firmly fixed and holds the axle 4. It is preferable to insert an elastic material such as a rubber piece in the contact portion 18 between the rear leg 14 and the mounting member 2 because it has an effect of preventing the mounting member 2 from slipping and preventing contact noise (backlash) during transportation.

The wheelbarrow 10 having the auxiliary wheels 1 can carry a load as a tricycle while the wheels 5 are grounded, and the labor is extremely small as compared with the case where the handle 19 is lifted and the front wheels 13 are used for traveling. It is safe without any fear of corners, inclination or falls. Further, when it is desired to change the traveling direction greatly during transportation or during unloading, the handle 19 can be temporarily lifted as necessary to operate as a unicycle. When using it as a unicycle for a long time, loosen the turn bag 6 and attach the mounting bracket 2 to the rear leg 1.
By removing from 4, it is possible to easily return to a unicycle without auxiliary wheels.

Next, FIGS. 5 and 6 show another embodiment of the present invention, in which the same auxiliary wheel 1 as that shown in FIG. 1 is mounted on a unicycle 20 having a structure different from that shown in FIG. This wheelbarrow 2
No. 0 has a rear leg 14 bent into a V shape, and does not have the column 15 and the horizontal beam 17 shown in FIG. 2, but instead has a horizontal beam 21 that connects the side frames 16 and 16 and supports the loading section 12. Since it has a structure with a key, the key part 8a of the turn bag 6 is
Is connected to the intersection of the cross beam 21 and the upper side frame 16 via an S-shaped connecting rod (S-shaped rod) 22. Other configurations are the same as those in FIG. 2, and the same or corresponding portions as those in FIG. 2 are shown with the same reference numerals as those in FIG. In addition, the hook portion 8a of the turn bag 6 is directly hooked to the cross beam 21,
The lower hook 7a and the axle 4 may be connected by a connecting rod 22, or the connecting rod 22 may be omitted by making the screw rod portion of the turn bag 6 long.

Also in this embodiment, the same operational effect as the above-mentioned embodiment can be obtained.

The present invention is not limited to the above-mentioned embodiments, and for example, the cross section of the mounting bracket 2 may have a U-shape with rounded corners, and this U-shape is also the "U-shape" in the present invention. Shall be included. Further, the specific shape of each part may be other than the above-described embodiments, such as using another shape of the connecting rod 22.

[Effect of device]

As described above, the auxiliary wheel for a wheelbarrow of the present invention can be extremely easily attached to an existing wheelbarrow.

Further, according to the hand-held unicycle with auxiliary wheels of the present invention, it is possible to easily and safely carry the work of carrying the load.

Further, according to this invention, since the fitting is U-shaped in cross section, the fitting is securely fitted to the rear side of the unicycle to prevent the fitting from being disengaged from the rear leg in the axial direction of the axle, and by fastening the turn backpack. The mounting bracket is prevented from coming off from the rear leg in the downward direction (perpendicular to the axle axis), so that the axle is securely and firmly attached to the rear leg, and it can withstand rough roads and use heavy loads. A simple wheelbarrow auxiliary wheel and wheelbarrow with auxiliary wheels are obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of an auxiliary wheel showing an embodiment of the present invention,
FIG. 2 is a front view of a wheelbarrow with auxiliary wheels shown in FIG. 1, FIG. 3 is a side view taken along the line A--A of FIG. 2, and FIG.
FIG. 5 is an enlarged sectional view taken along line BB in FIG. 5, FIG. 5 is a view corresponding to FIG. 2 showing another embodiment of the present invention, and FIG. 6 is a side view taken along the line CC of FIG. 1 ... Auxiliary wheel, 2 ... Mounting bracket, 4 ... Axle, 5 ...
Wheels, 6 ... Turn back, 7a ... Key, 8a ...
… Key part, 10 …… wheel barrow, 11 …… frame, 1
2 ... loading section, 14 ... rear leg, 14a ... bottom bending section, 17 ... horizontal beam, 20 ... wheelbarrow, 21 ... horizontal beam, 22 ... connecting rod.

Claims (2)

[Scope of utility model registration request] 1. A pair of mounting brackets having a U-shaped cross section and a substantially L-shaped front surface that can be inserted into and removed from a lower bent portion of a rear leg of a wheelbarrow, and an axle supported by these mounting brackets. An auxiliary wheel for a wheelbarrow comprising a pair of wheels rotatably mounted on the axle, and a pair of turn bags hooked at one end to the axle and at the other end to a frame of the wheelbarrow. 2. A pair of mounting brackets having a U-shaped cross section and a substantially L-shaped front surface that can be inserted into and removed from a lower end bent portion of a rear leg of a wheelbarrow, and an axle supported by these mounting brackets. And a pair of wheels rotatably mounted on the axle, and a pair of turn bags hooked at one end to the axle and at the other end to the frame of a hand-held unicycle. A hand-held unicycle with auxiliary wheels, which is fitted into a lower end bent portion of a rear leg and fastens the axle and the frame by the turn bag.