JPH0644943Y2 - Radio controller for crane with portable command box - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a wireless control device having a portable command box used for a crane.

[Prior art and its problems]

The crane radio controller includes a portable command box. The portable command box is provided with a movement command button for controlling the movement of the crane. The move command buttons include, for example, a plurality of buttons for moving the crane, such as "up, down, east, west, south, north". These movement command buttons are connected to the built-in transmitter. The transmitter transmits a radio wave of a signal corresponding to the move command button. The radio wave transmitted from the transmitter is received by the receiver, and the receiver identifies the transmitted radio wave and moves the crane in a predetermined direction. This wireless control device can freely move the crane by pressing the move command button of the portable command box. By the way, the wireless control device of the crane can be conveniently used if the moving speed can be switched. For this reason, the wireless control device currently on the market has two buttons for movement command buttons.
A step switch is used. The two-step switch allows the crane to move at low speed when pressed lightly, and moves at high speed when pressed harder. The wireless control device having this structure has a drawback that it is difficult to smoothly switch the moving speed. To switch from low speed to high speed, press the push button hard,
The reason is that it is difficult to adjust the force by loosening the push button pressing force when switching from high speed to low speed. That is, when the push button is loosened, if it is completely loosened, the push button is passed through the low speed movement and then stopped. Therefore, when the high speed and the low speed are frequently repeated, the crane tends to be temporarily stopped. In addition, the two-stage switch has a drawback that its life is significantly shorter than that of a normal switch. For example, the life of a normal push button switch is about 1 million times, but the life of a two-stage switch is extremely short, at most 20,000 times. Therefore, in the wireless control device using this switch, it is necessary to periodically replace the two-stage switch, which requires maintenance and inspection. In order to solve this drawback, the present inventor has developed a portable command box provided with a speed switching button in addition to the movement command button. In this portable command box, the moving speed can be switched by pressing the speed switching button together with the movement command button. The portable command box with this structure
Since the speed switching button can be operated separately from the movement command button, it has the feature that switching between low speed and high speed can be done smoothly. However, when this portable command box is actually used, it cannot be conveniently used. This is because the command box is manually operated to operate the two buttons separately. This invention was developed to solve this drawback, and an important object of this invention is to provide a crane equipped with a portable command box that can switch between high speed and low speed easily, easily and smoothly. To provide a wireless control device for.

Means for Solving the Problems The wireless control device of the present invention has the following configuration in order to achieve the above-mentioned object. (A) The wireless control device includes a portable command box 1 that controls the movement of the crane.
Includes a plurality of movement command buttons 2 for freely moving the crane, and a speed switching button 3 for controlling the moving speed of the crane. (B) The portable command box 1 has a thickness such that the upper surface and the lower surface can be held with a thumb and other fingers. (C) The portable command box 1 incorporates a transmitter 4 for wirelessly controlling the crane. (D) The transmitter 4 transmits a radio wave modulated by a signal input from the movement command button 2 and the speed switching button 3. (E) The movement command box 2 is on the upper surface of the portable command box 1, and the speed switching button 3 is on the lower surface of the portable command box 1 so that both the movement command button 2 and the speed switching button 3 can be easily operated. It is provided in. (F) A plurality of speed switching buttons 3 are provided on the lower surface of the portable command box 1. (G) The plurality of speed switching buttons 3 are arranged at opposite positions on the lower surface of the movement command button 2 provided on the upper surface of the portable command box 1. (H) The speed switching button 3 provided at a position facing the lower surface of the movement command button 2 is the speed switching button 3 for the movement command button provided on the upper surface.

[Action]

An example of a portable command box of the wireless control device of the present invention is shown in FIGS. As shown in these figures, the portable command box 1 is provided with a movement command button 2 on the upper surface and a speed switching button 3 on the lower surface. By the way, in this specification, the "upper surface" of the portable command box 1 means a surface operated by a thumb in a normal use state, and the "lower surface" means a surface opposite to the upper surface. And The portable command box 1 of this structure has a movement command button 2
Press the speed switching button 3 with your thumb, index finger or middle finger. If the movement command button 2 can be pressed with the thumb and the speed switching button 3 can be pressed with the other fingers, the speed switching button 3 can be pressed extremely easily. That is, there is a feature that the speed switching button 3 can be operated easily and easily while the movement command button 2 is being pressed. This is because the lower surface of the portable command box 1 is grasped by the forefinger or the middle finger other than the thumb in order to grasp the portable command box 1 by hand.

[Preferred embodiment]

An embodiment of the present invention will be described below with reference to the drawings. However, the embodiments described below exemplify a radio control device for a crane including a portable command box for embodying the technical idea of the present invention, and the device of the present invention is
The material, shape, structure, and arrangement of the components are not specified in the structure below. The device of this invention is subject to various modifications within the scope of the claims for utility model registration. Further, in this specification, in order to facilitate understanding of the scope of claims for utility model registration, the numbers corresponding to the members shown in the embodiment are
It is added to the members shown in "Column for request for utility model registration", "Column for means for solving conventional problems", and "Column for action and effect". However, the members shown in the scope of claims for utility model registration are by no means limited to the members of the embodiment. The radio controller for the crane includes a portable command box 1 shown in FIGS. 1 to 3. The portable command box 1 has a box-shaped casing 5 to which a movement command button 2 and a speed switching button 3 are fixed. The outer shape of the casing 5 has a thickness such that it can be held by hand, for example, 1 to 8 cm, preferably 1 to 6 cm.
Further, the outer shape of the upper surface of the casing 5 is, for example, a rectangle having a width of 3 to 10 cm and a length of 10 to 30 cm so that it can be easily held by hand. Furthermore, the weight is preferably 1 kg or less so that it can be held by hand. A plurality of movement command buttons 2, an alarm button, a lighting button, and a power on / off button are provided on the upper surface of the casing 5. The move command button 2 is composed of two push buttons for the upper and lower buttons, and eight push buttons for the west, east, north, and south. A speed switch button 3 for controlling the moving speed of the crane is fixed to the lower surface of the casing 5. The portable command box 1 shown in FIG. 2 is provided with four push buttons on the lower surface of the casing 5. In this way, when a plurality of push button switches are provided on the lower surface of the casing 5, it is possible to provide a plurality of speed switching buttons 3. The plurality of speed switching buttons 3 can adjust the moving speed of each movement command button 2. For example, on the bottom of the move command button that moves the crane up and down, there is a button that switches the up and down speed, on the bottom of the east and west move command buttons, there is an east and west speed switch button, and on the bottom of the north and south move command buttons. A north-south speed switching button can be provided. The movement command button 2 and the speed switching button 3 are connected to the transmitter 4 built in the casing 5. FIG. 4 shows a block diagram of the radio controller. As shown in this figure, the movement command button 2 and the speed switching button 3 are connected to a transmitter 4 built in the portable command box 1. When the move command button 2 and the speed switching button 3 are pressed, this command is transmitted to the receiver 6 by radio waves.
Therefore, the transmitter 4 transmits a radio wave in which a carrier wave is modulated by a signal from the movement command button 2 and the speed switching button 3. This invention does not specify the manner in which the transmitter modulates the carrier at the move command button and the input of the transmitter. The transmitter 4 can employ all methods capable of transmitting the fact that the movement command button 2 and the speed switching button 3 have been pressed by radio waves. For example, the transmitter 4 modulates a carrier wave with subcarriers having different frequencies to transmit the movement command button 2 and the speed switching button 3, respectively. The receiver 6 receives the radio wave transmitted from the transmitter 4,
The control signal transmitted from the portable command box 1 is taken out. The receiver 6 is connected to the control circuit 7. The control circuit 7 controls the operation of each motor 8 to move the crane according to the command.

[Effect of device]

The portable command box of the wireless control device of the present invention is located on the lower surface of the plurality of movement command buttons, and is provided with a plurality of speed switching buttons for the respective movement command buttons. The speed switching button provided on the lower surface of the portable command box is a speed switching button dedicated to the movement command button arranged thereon. In the portable command box having this structure, when the movement command button on the upper surface is operated, the speed switching button provided on the lower surface can be operated to adjust the moving speed of the crane at each movement command button to the optimum speed. . For example, changing the speed change that moves the crane up and down and the speed change that moves east and west or north and south, and changing the speed change when moving the crane up and down, the “high speed” when moving the crane east, west, and north and south. Can be faster. Therefore, when the crane is operated in various states with a plurality of movement command buttons, the speed can be changed to an optimum speed for each operation. Further, the wireless control device of the present invention has a feature that, when operating the speed switching button, each movement command button can be operated without fail to shift to an optimum speed. This is because a speed switching button is provided on the lower surface of the movement command button so as to correspond to the movement command button. In addition, the portable command box with this structure has the feature that the speed change button can be operated accurately from the beginning without any practice. The wireless control device, which can operate the speed switching button accurately and without error, has a feature that it can be used conveniently and safely. Further, since the wireless control device of the present invention uses the movement command button and the speed switching button as different operation switches, the speed switching button can be operated without affecting the operation of the movement command button. Even if the speed change button is operated while the move command button is being pressed, the state of pressing the move command button does not change. For this reason, there is a feature that anyone can operate it easily and easily without any practice. Furthermore, in the wireless control device of the present invention, since the speed switching button is a switch independent of the movement command button, it is not necessary to use a two-step switch for the movement command button. Therefore, there is a feature that the life of the switch can be remarkably extended by using a switch of a simple structure for the movement command button and the input circuit from the switch can be simplified.

[Brief description of drawings]

1 to 3 are a front view, a side view and a plan view showing a use state of a portable command box of a wireless control device according to an embodiment of the present invention, and FIG. 4 shows a circuit configuration of the wireless control device. It is a block diagram. 1 ... portable command box, 2 ... movement command button, 3 ... speed switching button, 4 ... transmitter, 5 ... casing, 6 ... receiver, 7 ... control circuit, 8 ... motor.

Claims (1)

[Scope of utility model registration request] 1. A radio control device for a crane, comprising a portable command box having all of the following configurations. (A) The portable command box (1) includes a plurality of movement command buttons (2) and a speed switching button (3). (B) The portable command box (1) contains the transmitter (4). (C) The portable command box (1) has a thickness such that the upper surface and the lower surface can be held with a thumb and other fingers. (D) The transmitter (4) transmits a radio wave modulated by a signal input from the movement command button (2) and the speed switching button (3). (E) The movement command button (2) is provided on the upper surface of the portable command box (1), and the speed switching button (3) is provided on the lower surface of the portable command box (1). (F) A plurality of speed switching buttons (3) are provided on the lower surface of the portable command box (1). (G) The plurality of speed switching buttons (3) are arranged at opposite positions on the lower surface of the movement command button (2) provided on the upper surface of the portable command box (1). (H) The speed switching button (3) provided at the position opposite to the lower surface of the movement command button (2) is the speed switching button (3) for the movement command button provided on the upper surface.