JPH09202236A - Small electric truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a constant braking force irrespective of the abrasion of a wheel or other external force. SOLUTION: The small electric truck is composed of a drive wheel 4 of the truck, a fixed wheel 5 supporting the truck, free wheels 6 changing the direction, a stopper 7 set when stopping, a cylinder separating the wheel from road surface, a pedal expanding and contracting the cylinder, an assist arm connected to the tip part of the pedal, and a mount attached to the cylinder, and a constant braking force can be obtained irrespective of the abrasion of the wheel or other external force by disengaging the grounding power between the wheel and the road surface of the stopper by the elevation of the cylinder in the stopper 7 disposed in the driving wheel side or in the front or back of the truck 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small electric carrier that can carry a large load or a heavy load with a small force.

[0002]

2. Description of the Related Art Japanese Utility Model Application Laid-Open No. 59-182461 discloses a vehicle equipped with a brake device or a stopper.

According to the prior art, it is disclosed that an elastic piece on a pine needle provided as a braking device or a stopper on a pine needle is pressed against the ground contact surface of the wheel by pressing a pedal to limit rotation of the wheel.

[0004]

The prior art is a brake device in which an elastic piece on a pine needle provided on a wheel is pressed against the ground contact surface of the wheel, and the pressing force limits the rotation of the wheel. In this brake device, the distance between the pine needle-shaped elastic piece and the ground contact surface of the wheel becomes large due to wheel wear and the like, and the force that suppresses wheel rotation becomes weak. Further, if the wheels of this structure are used to apply a large external force such as the propulsive force of the electric carrier, if the driving force of the carrier is large, the wheels will move even if the brakes are applied.

The object of the present invention is to dispose the cylinders in the stoppers on the drive wheel side or in front of and behind the transport vehicle, and to lift the cylinders in the stoppers to release the ground contact force between the wheels and the road surface, thereby causing wheel wear and other causes. Another object of the present invention is to provide a small electric carrier that can obtain a constant braking force regardless of the influence of external force (eg, electrification).

[0006]

In a small electric carrier according to the present invention, stoppers for separating wheels from the road surface are arranged on the drive wheel side or in front of and behind the carrier, and a cylinder in the stopper is a foot pedal. The above object is achieved by raising and lowering through the above to release the ground contact force between the wheel and the road surface.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show the equipment structure of a small electric carrier for carrying heavy or large loads according to the present invention. In FIGS. 1 and 2, 1 is a carrier for carrying luggage, 2 is a motor that is a drive source for driving and propelling the carrier 1, 3 is deceleration of the rotation of the motor 2, and propelling the carrier. A deceleration booster for obtaining a necessary turning force, 4 is a drive wheel for transmitting the turning force obtained from the booster 3 to the road surface and propelling the carrier, and 5 is a fixing for supporting the carrier 1. Wheels, 6 are free wheels for supporting the carrier 1 and changing the direction of the carrier 1, 7 is a stopper to be set when the carrier 1 is stopped or working on the carrier 1, and 8 is a motor A battery as a power source of 2, a cylinder 11 for separating any or all of the wheels 4, 5, 6 from the ground, a pedal 12 for expanding and contracting the cylinder 11 by applying an external force, and a pedal 12 and A cylinder 11 is rotatably connected to the reed. Toamu, 14 consists of the mount in contact with the ground is attached to the distal end portion of the cylinder 11.

The operation of the stopper of the small electric carrier of the present invention will be described with reference to the drawings. After the traveling operation of the carrier is completed, force is applied to the pedal 12 in the direction of the arrow in FIG. An inner shaft 11a and an arm 12a in the cylinder 11 are slidably connected. This force is transmitted from the arm 12a to the assist arm 13. At the same time, the two transmission forces are transmitted from the pedal 12a to the inner shaft 11a, and the two transmission forces are converted into a force that causes the inner shaft 11a to move up and down using the principle of leverage to expand and contract the entire length of the cylinder 11. The force transmitted to the inner shaft 11a pushes the mount 14 against the road surface and pushes up the cargo bed portion of the transport vehicle 1 as shown in FIG. Then, even if the wheels 4 and 5 attached to the carrier 1 are separated from the road surface and a driving force is applied, the driving wheels 4
As the car spins, it does not propel the carrier and acts as a stopper. Further, when the load on the pedal 12 is stopped when the mount 14 comes into contact with the road surface, the drive wheel 4 side remains in contact with the road surface. Function as. To release the stopper 7, the pedal 12 is further depressed to release the lock in the cylinder 11 and return to the original state.

Here, the operation of the stopper when mounted on the drive wheel side has been described, but before and after the transport vehicle (on the drive wheel side,
It is the same when it is attached to the free wheel side) and the entire carrier is lifted. In this case, it functions as a more stable stopper as compared with the case where it is attached to two places on the drive wheel side.

By using the stopper, the wheels and the road surface are separated from each other, so that the vehicle can be stopped securely and safely even on a slope or a rough road surface. Also, when working on a transport vehicle, even if you accidentally operate the operation switch of the transport vehicle, the wheels and the road surface are separated, so the entire transport vehicle is stable without starting and you can work safely on the transport vehicle. .

[0011]

According to the small electric carrier according to the present invention,
A constant braking force is obtained regardless of the influence of wheel wear and other external forces. In addition, since the carrier is stable and does not start moving, work can be performed safely.

[Brief description of drawings]

FIG. 1 is a side view of a small electric carrier according to the present invention.

FIG. 2 is a bottom view of the small electric carrier according to the present invention.

FIG. 3 is an operation explanatory view of a stopper.

FIG. 4 is an operation explanatory view of a stopper.

[Explanation of symbols]

7 ... Stopper, 11 ... Cylinder, 11a ... Inner shaft, 12 ... Pedal, 12a ... Arm, 13 ... Assist arm, 14 ... Mount.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Ninomiya 2477 Takaba, Hitachinaka-shi, Ibaraki Hitachi Car Engineering Co., Ltd. (72) Inventor Takuji Ujiie 2477 Takaba, Hitachinaka-shi, Ibaraki Hitachi Car Engineering Co., Ltd. Within

Claims (2)

[Claims] 1. A transport vehicle for loading and transporting luggage, a motor for driving and propelling the transport vehicle, a deceleration booster for amplifying the propulsive force of the motor, and the transport vehicle. A small electric carrier including a stopper foot for raising and lowering and driving, or for separating a wheel for supporting the carrier from a road surface, a battery as a power source of the motor, and a controller for controlling the motor. In a car, a cylinder for raising and lowering the carrier when stopping the carrier and a pedal for extending and contracting the cylinder are rotatably coupled, and the pedal is lowered to press the tip of the cylinder against the road surface. A small electric carrier that is equipped with a stopper. 2. The small electric transport vehicle according to claim 1, wherein the stopper is a pair and the pedal is one.