JP3100588U - Front wheel turning device with vibration absorption function for four-wheel electric walking substitute vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid excessive leaning or overturning, to greatly reduce manufacturing cost, to obtain both stability and operation convenience at the same time, and to have two front wheels having an automatic return function.
A rotary shaft is provided immediately below an operation handle, and a bottom end of the rotary shaft is connected to a rectangular rod. One wheel shaft 12 for providing two front wheels 26 arranged in parallel is separately provided, and an elastic body 13 and a connecting plate 14 are provided between the rectangular rod 111 and the wheel shaft 12, whereby The two front wheels 26 in a set can be turned at the same time by operating the operation handle, and have a function of absorbing vibration.
[Selection diagram] Fig. 1

Description

This invention relates to a front-wheel turning device with a vibration absorbing function for a four-wheel electric walking substitute vehicle, in particular, one rotary shaft is provided directly below an operation handle, and the bottom end of the rotary shaft is connected to one rectangular rod. Under the rectangular rod, one wheel axle for providing two front wheels adjacent to each other and side by side is separately provided, and an elastic body and a connecting plate are provided between the rectangular rod and the wheel axle. Is provided, whereby the two front wheels in one set can be turned at the same time by operating the operation handle, and have a function of absorbing vibration. The present invention relates to a front wheel turning device having a vibration absorbing function.

As shown in FIG. 9, a conventional electric walking substitute vehicle 2 is provided with a seat 22 and an operation handle 23 on a vehicle body 21 and two rear wheels 24 driven by a power source below the vehicle body 21. The muffler 25 is provided on the outer periphery of the operation handle 23 which is provided and inserted into the vehicle body 21 and is combined with the front wheel 26. The operation of such a three-wheel electric walking substitute vehicle is easy, but since it contacts the floor at only three points, the overall stability is not good and there is a possibility of falling over. Another conventional four-wheeled electric walking substitute has a distance between two front wheels that is the same as the distance between two rear wheels, and is very similar to the structure of a passenger car. high. However, if two front wheels are used, the two front wheels must be turned concentrically when turning. That is, the turning mechanisms of the two front wheels need to follow the Akeman principle (Ackeman Principle). The reason is that when the four-wheel electric walking substitute vehicle turns, the instantaneous center of the wheels crosses at one point, all wheels can be completely rotated for the first time, and the purpose of turning can be achieved. is there.

(4) The front wheel turning mechanism and the corresponding frame of such a four-wheel electric walking substitute become complicated, which results in an increase in manufacturing cost and weight. And certain national laws restrict the sale and manufacture of such conventional four-wheeled electric walking substitutes.

The conventional electric walking substitute vehicle has the following disadvantages.
(1) Although the three-wheeled electric walking substitute vehicle is easy to operate, it comes into contact with the floor only at three points, so that the overall stability is not good and there is a possibility of falling over.

(2) The conventional four-wheeled electric walking substitute vehicle has a complicated front wheel turning mechanism and a corresponding frame, resulting in an increase in manufacturing cost and weight. And certain national laws restrict the sale and manufacture of such conventional four-wheeled electric walking substitutes.

The invention according to claim 1, which has been made to solve the above-mentioned drawbacks, is a rotary shaft provided with a rectangular rod provided with a plurality of through holes at the front and back and a plurality of holes below, A plurality of through holes are provided in the front and rear, a plurality of holes are provided on the top, and a stretched shaft for incorporating two front wheels at both ends is provided on one wheel shaft, and provided on the stretched shaft and the wheel shaft. A plurality of elastic bodies to be placed in the holes, mounting holes are provided on the upper and lower sides, a plurality of connecting plates for attaching before and after the through holes provided on the stretching shaft and the wheel shaft, and a center hole. One step portion is provided, and the step portion can freely rotate even if it is placed in an assembling hole at the upper and lower ends of the connecting plate, and has a length longer than the thickness of the connecting plate. At the same time, the through holes provided in the extension shaft and the wheel shaft, and the connecting plate and bush attached before and after the Through it, and summarized in that a vibration absorbing function wheel deflection apparatus for a four-wheeled motorized walking substitute vehicle, characterized in that it comprises a plurality of bolts that secure lock nuts, the.

In the invention according to claim 2, the bush is formed of a material having lubricity, and the front wheel turning device with a vibration absorbing function of the four-wheel electric walking substitute vehicle according to claim 1, wherein the bush is formed of a material having lubricity. The gist is that

In the invention according to claim 3, the connecting plate provided on the device has an inverted U shape, and the four-wheel type electric walking substitute vehicle has a front wheel turning device with a vibration absorbing function according to claim 1. The gist is that there is.

The invention according to claim 4 is the front wheel turning device with vibration absorbing function of the four-wheeled electric walking substitute vehicle according to claim 1, wherein the connecting plate provided in the device has a U shape. The gist is that.

According to the present invention, the following effects are obtained.
(1) The electric walking substitute vehicle of the present invention can avoid the vehicle from leaning too much or falling down.

(2) Since the entire turning mechanism is much simpler than the Akeman turning mechanism used in the conventional four-wheel electric walking substitute vehicle, the manufacturing cost can be greatly reduced.

(3) The stability of the four-wheel electric walking substitute is obtained, and the convenience of operation of the three-wheel electric walking substitute is also obtained.

(4) It is possible to avoid slipperiness due to wear of a single front wheel as in a conventional three-wheeled electric walking substitute vehicle.

(5) The two front wheel type has a higher frictional force with the floor than the conventional one front wheel type.

(6) Since the two front wheels have an automatic return function, they can automatically return after turning.

First, reference is made to FIG. The turning device 1 of the present invention includes a rotating shaft 11, a wheel shaft 12, an elastic body 13, a connecting plate 14, a bush 15, and a bolt 16, and incorporates two front wheels 26. It is for.

Further, reference is made to FIGS. A rectangular rod 111 provided with a plurality of through holes 112 at the front and back and a plurality of holes 113 below for accommodating the elastic body 13 is provided at the bottom end of the rotating shaft 11.

The wheel axle 12 is provided with a plurality of through holes 122 before and after it, a plurality of holes 121 for accommodating the elastic body 13 thereon, and an extension for incorporating two front wheels 26 at both ends. A shaft 123 is provided.

An assembling hole 141 is provided above and below the connecting plate 14 so that the bush 15 can freely rotate even when the step portion 151 of the bush 15 is fitted. The length of the step portion 151 is greater than the thickness of the connecting plate 14. Somewhat long. The lubricating bush 15 is provided with a separate center hole 152 for inserting the bolt 16. Then, two pairs of connecting plates 14 are brought into contact with the front and rear end surfaces of the rectangular rod 111 and the wheel shaft 12, and the bush 15 is fitted into the mounting hole 141. Can be locked and fixed. The nut 161 may be a locking nut. When the nut 161 is fixed by locking the bolt 16, the end face of the bush 15 is firmly in contact with the front and rear end faces of the rectangular rod 111 and the wheel shaft 12, and the length of the stepped portion 151 is reduced by By being longer than the thickness of 14, the connecting plate 14 can still pivot even if the nut 161 is securely locked. The connecting plate 14 provided in the through-holes 112 and 122 formed in the rectangular rod 111 and the wheel shaft 12 has a C shape as shown in FIGS. 2 and 4 (an inverted C shape as shown in FIG. 8). Accordingly, since the wheel shaft 12 cannot move to both sides in normal times, the purpose of stably moving forward can be achieved.

4 to 6. The assembled turning device covers the rotating shaft 11 connected thereto with a muff 25 provided on the frame of the vehicle body 21, and the upper end of the rotating shaft 11 can later incorporate the operating handle 23. Then, if the operation handle 23 is turned, the two front wheels 26 that are close to and parallel to each other can be smoothly turned.

When the electric walking substitute vehicle of the present invention is traveling, when any one of the front wheels 26 hits or turns an obstacle, the front wheels 26 are moved upward or downward by an external force, and are symmetrically inclined. The two pairs of connecting plates 14 are in an asymmetrical inclined state (as shown in FIG. 7), and form a vibration absorbing structure by the elastic body 13 on the corresponding side. Can be avoided from over-tilting or overturning. Since the entire turning mechanism is much simpler than the conventional Akeman turning mechanism used in the conventional four-wheel electric walking substitute, the manufacturing cost can be greatly reduced and the stability of the four-wheel electric walking substitute can be reduced. And the convenience of operation of the three-wheeled electric walking substitute vehicle is obtained.

It is an exploded perspective view of this invention. It is a front view which shows the assembled state of this invention. It is a partial expanded sectional view of this invention. It is a front schematic diagram which shows embodiment of this invention. FIG. 3 is a schematic side view showing an embodiment of the present invention. FIG. 2 is a schematic plan view showing an embodiment of the present invention. FIG. 4 is a schematic diagram showing an operation during use of the present invention. It is a front view which shows other embodiment of this invention. It is a perspective view of the conventional three-wheeled electric walking substitute vehicle.

Explanation of reference numerals

1 Turning device
DESCRIPTION OF SYMBOLS 11 Rotation shaft 111 Rectangular rod 112 Through hole 113 Hole 12 Wheel shaft 121 Hole 122 Through hole 123 Extension shaft 13 Elastic body 14 Connecting plate 141 Assembling hole 15 Bush 151 Stepped portion 152 Circular hole 16 Bolt 161 Nut 2 Electric walking substitute 21 Body 22 Seat 23 Operation handle 24 Rear wheel 25 Muff 26 Front wheel

Claims (4)

One rotating shaft provided with a rectangular rod provided with a plurality of through holes provided before and after and a plurality of holes provided below,
A plurality of through holes are provided in the front and rear, a plurality of holes are provided thereon, and one wheel shaft provided with an extension shaft for incorporating two front wheels at both ends,
A plurality of elastic bodies for placing in holes provided in the stretching shaft and the wheel shaft,
Mounting holes are provided on the top and bottom, and a plurality of connecting plates for attaching before and after through holes provided on the stretching shaft and the wheel shaft,
A center hole and one step portion are provided, and the step portion can be freely rotated even if it is placed in an assembling hole at the upper and lower ends of the connecting plate, and its length is greater than the thickness of the connecting plate. Long bushes and
A through-hole provided in the extension shaft and the wheel shaft, and a plurality of bolts which are simultaneously inserted through the connecting plate and the bush attached to the front and rear thereof and locked and fixed with a nut. Front wheel turning device with vibration absorption function for wheeled electric walking substitute vehicles. The front wheel turning device with a vibration absorbing function of a four-wheel electric walking substitute vehicle according to claim 1, wherein the bush is formed of a material having lubricity. The front wheel turning device with a vibration absorbing function of a four-wheel electric walking substitute vehicle according to claim 1, wherein the connecting plate provided in the device has an inverted U shape. The front wheel turning device with a vibration absorbing function of a four-wheel electric walking substitute vehicle according to claim 1, wherein the connecting plate provided in the device has a C shape.

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