JP2006298157A - Auxiliary powered vehicle for cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auxiliary powered vehicle for a cart capable of easily and safely moving a single cart with cargoes loaded thereon, or a plurality of connected carts by only one person by connecting the auxiliary powered vehicle to the tip of the cart without modifying the cart itself. <P>SOLUTION: The auxiliary powered vehicle B is attachably and detachably connected to the tip of a cart A. The auxiliary powered vehicle B comprises a body 2, a motor 3 accommodated in the body, a battery 4 forming a power supply of the motor, wheels 6 driven by the motor 3, a control unit 5 to control the motor, a steering wheel 8 to steer the advancing direction, a controller 12 which is mounted to the steering wheel to operate the control unit 5, a brake 9 to brake the wheels 6, and a connection part 1 provided on the back of the body 2. The road holding power of the wheels 6 can be controlled by operating the steering wheel 8. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an auxiliary power vehicle that is used by detachably connecting to a front end portion of a cart row to move a cart row in which a hand cart is singly or a plurality of carts are linearly connected.

  Generally, hand carts are often used to load and move goods such as goods in factories, warehouses, and large stores. However, hand carts loaded with luggage require a considerable amount of force to move, and it is very difficult for one person to move, especially when multiple carts are connected.

For this reason, for the purpose of facilitating movement, Patent Document 1 discloses a cart for loading a load in which a motor-driven auxiliary power device is attached to a hand cart. According to the present invention, a part of a body frame of a cart having front and rear wheels is extended rearward to form an extension frame, and a drive device driven by a motor is attached to the extension frame, and the cart is driven by the drive device. The rear wheel is driven. Further, it is described in the specification that this drive device may be detachable from the cart body frame together with the extension frame.
JP-A-11-227610

  However, in the above conventional invention, the auxiliary power device for directly driving the rear wheel of the cart is attached to the frame of the cart, and once the auxiliary power device is attached, the user cannot easily attach and detach it. It is substantially the same as a general electric cart and cannot be easily attached to and detached from the cart every time it is used.

  Therefore, according to the present invention, an auxiliary power vehicle is connected to the tip of the cart without any modification to the cart itself, so that a cart loaded with luggage can be easily used alone or a plurality of connected carts can be easily operated by one person. It is a main object of the present invention to provide a cart auxiliary power vehicle that can be moved safely and safely.

  Furthermore, an important object of the present invention is a function that can increase the ground contact force of the wheel by operating the handle when the ground force with the road surface is insufficient due to the road surface condition and the wheel of the auxiliary power vehicle slips. It is the point which provides the auxiliary power vehicle for carts provided with.

  In order to solve the above problems, the present invention takes the following technical means. That is, the cart auxiliary power vehicle according to the present invention is an auxiliary power vehicle that is detachably connected to the tip of the cart, and the auxiliary power vehicle is housed in the body and the body. A motor, a battery serving as a power source of the motor, wheels driven by the motor, a control unit that controls the motor, a handle that steers the traveling direction, a controller that is provided on the handle and operates the control unit, The structure includes a brake for braking the wheel, a connecting portion provided on the back of the body, and a grounding force control means for manually controlling the grounding force of the wheel during traveling.

  Since the present invention is configured as described above, an auxiliary power vehicle is connected to the tip of a cart row in which a plurality of carts are connected linearly or to the tip of a single cart, and a controller is operated by a controller. By steering the wheels with the steering wheel and guiding the cart or the cart row to the left and right while performing forward, deceleration, and stop operations, only one operator can safely and easily move to the destination. In addition, in the case where the wheels of the auxiliary power vehicle slip due to the road surface condition during traveling, the ground contact force control means can increase the ground contact force of the wheels, so that stable travel is possible. effective.

(Means and effects for solving other problems)
In the above invention, the control means includes a structure formed so that the body can swing forward and downward from a substantially horizontal posture via a pivot provided at the connecting portion of the back portion, and thereby the body via the handle. It is preferable to form the wheel so that the wheel can be pressed in the grounding direction by swinging the wheel forward and downward.
Thereby, the ground contact force of the traveling wheel can be easily controlled with a simple structure.

Further, in the above invention, the grounding force control means includes a wheel holder that holds the wheel and is held by a body at a rear end through a horizontal axis so as to be able to swing up and down, and the wheel holder is always attached downward. A longitudinal spring of the handle is attached to the wheel holder, and the wheel is configured to be able to press the wheel in the grounding direction by swinging the handle back and forth. It is good to do.
As a result, since the wheel is constantly urged toward the road surface by the spring, a good grounding force is always obtained, and the grounding force of the wheel is insufficient due to the load on the cart or the road surface condition. In such a case, by swinging the handle, the wheels can be pressed in the ground contact direction, and stable running is possible.

Moreover, in the said invention, it is good to form the handle | steering-wheel of the said operation part so that position adjustment is possible to an up-down direction.
As a result, the handle can be attached at a position that matches the height of the worker, so that the operability can be improved.

The details of the cart auxiliary power vehicle according to the present invention will be described below based on the embodiments shown in the drawings.
FIG. 1 is a perspective view of the auxiliary power vehicle, FIG. 2 is a side view showing the usage state of the auxiliary power vehicle, and FIG. 3 is an enlarged side view of the auxiliary power vehicle in use. In the figure, symbol A indicates a cart for carrying goods that is generally used in large stores such as factories, warehouses, supermarkets, and the like. Are formed so that they can be connected in a linear direction.

  Reference numeral B denotes an auxiliary power vehicle according to the present invention, which is used by detachably connecting the connecting portion 1 provided on the back portion to the coupler 18a at the tip portion of the cart A. A motor 3, a battery 4 serving as a power source for the motor 3, and a control unit 5 for controlling the motor 3 are provided in the body 2 of the auxiliary power vehicle A. Driven wheels 6 are provided.

  Any means for detachably connecting the auxiliary power vehicle B to the cart A may be used, but in this embodiment, the auxiliary power vehicle B is connected via the horizontal horizontal pivot 7 at the rear end of the body 2. A portion 1 is provided, and the hook of the coupler 18a of the cart A is detachably engaged in the insertion hole 1a of the coupling portion 1.

  In the body 2 of the auxiliary power vehicle B, a handle 8 for steering the wheel 6, a brake 9 for braking the wheel 6, a brake lever 11 for operating the brake 9 via a wire 10, and the control unit 5 are operated. Thus, a controller 12 is provided for operating the auxiliary power vehicle B to advance, decelerate, reverse, and stop.

  The handle 8 is formed so that its position can be adjusted in the vertical direction. In the present embodiment, a plurality of handle insertion holes 14 are provided on the vertical longitudinal axis 13 connected to the wheel holder 16 that supports the wheel 6 at regular intervals in the vertical direction. The vertical position can be adjusted by inserting the tip screw shaft portion of the handle 8 and fastening with the nut member 15, but other means, for example, the vertical axis 13 can be expanded and contracted so that the handle position can be adjusted. Is also possible.

  Furthermore, the present invention incorporates a grounding force control means that can easily control the grounding force of the wheel 6 during traveling. In this embodiment, the grounding force control means is formed so that the body 2 can only swing downward from a horizontal posture with a pivot 7 provided on the connecting portion 1 of the back as a fulcrum as shown in FIG. ing. Thus, the wheel 6 can be pressed in the grounding direction by pushing the handle 8 forward and swinging the body 2 downward as indicated by the phantom line in FIG.

  In use, as shown in FIG. 2, an auxiliary power vehicle B is connected to the tip of a cart row in which a plurality of carts A are connected in a straight line, and an operator uses a controller 12 attached to the handle 8 at the tip of the cart row. While the controller 5 is operated to move forward, decelerate, and stop, the steering wheel 6 is steered by the handle 8 to guide the cart train to the left and right, so that the cart train can be safely and easily operated by only one operator. Can be moved to. On the downhill, the vehicle can be moved safely by running while applying a brake by the brake lever 11. Further, when the wheel 6 of the auxiliary power vehicle slips depending on the road surface condition, the ground force can be increased by pressing the wheel 6 in the grounding direction by swinging the body 2 downward through the handle 8. it can.

  FIG. 4 shows another embodiment of the contact force control means according to the present invention, in which a wheel holder 16 for holding the wheel 6 can swing up and down on the body 2 via a horizontal shaft 17 at the rear end. It is held and is always biased downward by the spring 18. A vertical axis 13 of the handle 8 is attached to the wheel holder 16, and the vertical axis 13 is held by the body 2 so as to be able to swing in the direction of pushing forward as indicated by an imaginary line in FIG. 4. Thus, the wheel 6 can be pressed in the grounding direction by swinging the handle 8 forward. A connecting portion 1 ′ for connecting the cart A is fixed to the back portion of the body 2. Accordingly, in this embodiment, the wheel 6 is always urged toward the road surface by the spring 18, so that a good grounding force is always obtained, and the grounding force of the wheel is insufficient due to the road surface condition and the possibility of loading. In such a case, the wheel 6 can be strongly pressed in the grounding direction by swinging the handle 8 forward, so that a stable propulsive force can be obtained.

  The present invention is not limited to the embodiments described above, and can be implemented with appropriate modifications within a range not departing from the gist of the configuration. For example, when the operator releases his / her hand from the handle 8 for some reason, an emergency stop means may be separately provided for the control unit 5 to detect this and stop the driving of the auxiliary power vehicle B. Further, although the auxiliary power vehicle B has one wheel in the above embodiment, it may be formed by two wheels, three wheels, or four wheels.

  INDUSTRIAL APPLICABILITY The present invention can be used for all types of hand carts without power, and can be used when a plurality of carts are connected in an empty state or in a state where loads are loaded and moved.

The perspective view of the auxiliary power vehicle for carts concerning this invention. The side view which shows the use condition of the auxiliary power vehicle for carts concerning this invention. The enlarged side view of the auxiliary power vehicle for carts shown in FIG. The enlarged side view similar to FIG. 2 which shows another Example of this invention.

Explanation of symbols

A Cart B Auxiliary power vehicle 1 Connecting part 2 Body 3 Motor 4 Battery 5 Control part 6 Wheel 7 Axis 8 Handle 9 Brake 11 Brake lever 12 Controller 13 Handle vertical axis 16 Wheel holder 17 Horizontal axis 18 Spring

Claims (4)

  An auxiliary power vehicle that is detachably connected to the tip of the cart, the auxiliary power vehicle being driven by a body, a motor housed in the body, a battery serving as a power source for the motor, and a motor. Wheels, a control unit for controlling the motor, a handle for steering the traveling direction, a controller provided on the handle for operating the control unit, a brake for braking the wheel, and a connecting unit provided on the back of the body And a grounding force control means for manually controlling the grounding force of the wheel during traveling.   The grounding force control means includes a structure formed so that the body can swing forward and downward from a substantially horizontal posture via a pivot provided on the connecting portion of the back portion, thereby moving the body forward via the handle. 2. The cart auxiliary power vehicle according to claim 1, wherein the cart is configured to be able to press the wheel in the grounding direction by swinging downward.   The grounding force control means includes a wheel holder that holds the wheel and is held at the rear end of the body so as to be able to swing up and down via a horizontal shaft, and a spring that constantly biases the wheel holder downward. The cart according to claim 1, wherein a vertical axis of a handle is attached to the wheel holder, and the wheel can be pressed in a grounding direction by swinging the handle back and forth. Auxiliary powered vehicle. The auxiliary power vehicle for a cart according to any one of claims 1 to 3, wherein the position of the handle is formed so as to be adjustable in a vertical direction.

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