JPH0423283Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a control device that is directly attached to various machines such as construction machines and transportation machines and controls them.
The present invention also relates to the improvement of multi-directional control switches that are often used in remote control devices for remotely controlling various machines that operate in dangerous places such as high places or underwater.

[Conventional technology]

Traditionally, control devices have been installed directly on various types of machinery such as construction machinery and transportation machinery to control them, or remote control devices have been used to remotely control various types of machinery that operate in dangerous places such as high places or underwater. A multi-directional control switch often used in remote control devices, etc.
For example, the one shown in FIG. 2 has been proposed.

This is because the upper and lower sides are rotatably mounted on a support part c formed on the main body side using a large-diameter collar part b, which has a large-diameter collar part b formed almost at the center of the operating rod a facing in the vertical direction, as a fulcrum. The lower side from the fulcrum which is used as a converter for converting into a control signal is connected to a variable resistor d which creates a control signal, and furthermore, between the large diameter flange formed on the upper side from the fulcrum of the operating rod a and the support part c. A spring e is fitted on the outside of the lever to return the operating rod a to its neutral position in the vertical direction.

In such a multi-directional control switch, when the operator operates the upper part of the operating rod a, which serves as the operating section, by moving it back and forth, left and right, or turning the fulcrum from the fulcrum of the operating rod a, the fulcrum is used as a converting section that converts the control signal into a control signal. This corresponds to the direction and amount of displacement of the lower part, and converts this into an electrical signal, hydraulic pressure, or pneumatic signal to control various machines or remotely operate them.

[Problem that the invention attempts to solve]

By the way, with these multi-directional control switches,
When the inherent vibration period of the power mechanism of the various machines in which this is directly installed matches the vibration period of the operating rod a to which the spring e is fitted, the operating rod a enters a resonant state, and when the vibration becomes large, it becomes neutral. It may inadvertently move around the fulcrum from its vertical position, and there is a risk that various machines may be controlled spontaneously. Furthermore, in addition to the inherent vibrations of the power mechanism, when vibrations are transmitted from the outside, there is a risk that various machines may be controlled spontaneously or remotely operated.

The multi-directional control switch of the present invention was devised in view of these conventional problems, and unless the operating rod is operated, the switch will not move inadvertently from its neutral position facing vertically. Aim to be less.

[Means for solving problems]

In order to achieve this purpose, in the present invention, the operating rod 1 facing in the vertical direction is provided so that the upper side and the lower side can be rotated about the almost central part of the operating rod 1. By operating the side,
In a multi-directional control switch in which the lower side can be rotated in multiple directions from a fulcrum that is a converter for converting into a control signal, a balance adjusting weight 11 is provided at a suitable position on the lower side from the fulcrum of the operating rod 1, and the operating rod 1 When the balance adjustment weight 11 is provided, when the balance adjustment weight 11 is provided, the rotational moment applied to the balance adjustment weight acts as a restoring force to return the balance adjustment weight to the neutral position, which is a position facing the vertical direction. A multi-directional control switch was constructed.

[Effect]

In such a multi-directional control switch, the operating rod 1 is always moved to the vertical direction, which is the neutral position, by the balance adjustment weight 11 installed at a suitable location on the lower side of the fulcrum which is the converter that converts the control signal into a control signal. It is urged to return to the position facing . Therefore, unless the operating rod 1 is operated, even if vibrations are transmitted from the power mechanism of the various machines in which it is installed or from the outside, it will be in a resonance state and will not move inadvertently around the fulcrum from the neutral position. It becomes less. Therefore, the risk of various machines being controlled spontaneously or remotely controlled is reduced. [Embodiment] Details of the multi-directional control switch according to the present invention will be further explained based on the attached drawings.

First, reference numeral 1 in the figure is an operating rod, which is formed into a long rod shape from a strong metal such as iron or steel, and is oriented in the vertical direction. Further, reference numeral 2 denotes a grip ball for operation that is attached to the upper end of the operating rod 1. Furthermore, a large-diameter flange 3 is formed approximately at the center of the operating rod 1.
The upper side of this is used as an operation section 4, and the lower side is used as a conversion section 5 that converts into a control signal. and,
The operating rod 1 is provided with the upper operating section 4 and the lower converting section 5 rotatably supported by a support section formed on the main body 7 side, shown as 6 in the figure, using the collar section 3 as a fulcrum. be. In this way, the operating section 4
By operating the upper part from the fulcrum of the operating rod 1, the lower part can be rotated in multiple directions from the fulcrum, which is the conversion part 5.

Next, reference numeral 8 in the figure is a cover made of soft rubber or synthetic resin and provided between the lower end of the grip ball 2 of the operating rod 1 and the upper surface of the main body 7. This prevents rainwater and dust from entering the inside of the main body 7, and also assists in returning the operating rod 1 to the neutral position, oriented in the vertical direction. or,
Reference numeral 9 denotes a movable slide, one of which is installed at an appropriate position in the operating rod position converting section 5, and the other is connected to the rotating shaft of the variable resistor 10 to generate a control signal and change the amount of displacement of the operating rod 1. The resistance amount of the variable resistor 10 is changed in accordance with the above. In the illustrated embodiment, two movable slides 9 are provided with the operating rod 1 in between, and two variable resistors 10 are used to enable two-dimensional control. Furthermore, 11 in the figure is a moving slide 9 of the operating rod 1.
This is a balance adjustment weight attached to the lower side of the control rod, which is formed into a substantially spherical shape from a high-density metal such as lead, and is attached to the operating rod 1 by inserting a through hole 12 therethrough. The shape of this balance adjusting weight 11 is not limited to a substantially spherical shape, but may be any shape that can apply the weight almost uniformly around the operating rod 1, for example, formed into an abacus bead shape or a cylindrical shape. It is also possible to do so. By providing such a balance adjustment weight 11 on the conversion part 5 on the lower side from the fulcrum of the operating rod 1, when the operating rod 1 is oriented to a position displaced from the vertical direction, the rotational moment applied to it is neutralized. It acts as a restoring force to return to the vertically oriented position. In addition, in order to adjust the rotational moment loaded on the operating rod 1, a balance adjustment weight 1 inserted from the lower end of the operating rod 1 through the through hole 12 is used.
This can be achieved by adjusting the position of 1 and attaching both. It can be said that it is preferable to adjust the mounting position of this balance adjustment weight 11 as appropriate depending on the length of the operating part 4 side and the weight of the gripped ball 2.

Here, a 36-gram balance adjustment weight 11 was attached to the lower end of the operating rod 1, and a vibration test was conducted at a vibration index of 9 G. As a result, it was found that the operating rod 1 was not affected by vibration at all.

Therefore, as in the past, such multi-directional control switches are installed directly on various machines such as construction machines and transportation machines, and are used as control devices to control these machines, or in dangerous places such as at high places or under water. It is used as a remote control device to remotely control various machines that are used for work at a location. In such a multi-directional control switch, the operating rod 1 is always returned to the neutral position, which is a position facing in the vertical direction, by the balance adjusting weight 11 provided at the lower side of the movable slide 9 of the converter 5. It is energized as follows. Therefore, unless the operating rod 1 is operated, even if vibrations are transmitted from the power mechanism of the various machines in which it is installed or from the outside, it will be in a resonance state and will not move inadvertently around the fulcrum from the neutral position. It becomes less. For this reason, various machines are controlled naturally,
This reduces the risk of remote control.

In addition to the illustrated embodiment, the lower part of the operating rod 1 than the movable slide 9 is formed with a male thread, and the through hole 12 of the balance adjusting weight 11 is formed with a female thread, so that the balance adjusting weight 11 is connected to the operating rod 1. It can also be made movable in the vertical direction.

[Effect of idea]

In the multi-directional control switch according to the present invention as described above, the operating rod 1 is always moved from the vertical position to the neutral position by the balance adjustment weight 11 provided on the lower side from the fulcrum which is the converter for converting into a control signal. Because it is biased to return to the position facing the direction,
As long as the operating rod 1 is not operated, even if vibrations are transmitted to it, it will be in a resonant state, and if it is in the neutral position, it will be less likely to inadvertently move around the fulcrum.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing an embodiment of a multi-directional control switch according to the present invention, and FIG. 2 is a vertical cross-sectional view showing a conventional multi-directional control switch. 1... Operating rod, 2... Gripping ball, 3... Tsuba, 4
...Operation section, 5...Conversion section, 6...Supporting section, 7...
...Body, 8...Cover, 9...Movement slide, 1
0...Variable resistor, 11...Balance adjustment weight, 12...Through hole.

Claims (1)

[Scope of utility model registration request] A vertically oriented operating rod 1 is provided so that its upper and lower sides can be rotated about its center as a fulcrum, and by operating the upper side from the fulcrum of the operating rod 1, which serves as the operating section, the signal is converted into a control signal. In a multi-directional control switch in which the lower side can be rotated in multiple directions from a fulcrum that is a conversion part, a balance adjustment weight 11 is provided at an appropriate location on the lower side from the fulcrum of the operating rod 1, so that the operating rod 1 can be rotated from the vertical direction. When facing the displaced position, by providing the balance adjustment weight 11, the rotational moment loaded on this weight acts as a restoring force to return to the neutral position, which is the position facing the vertical direction. Switch.