JPWO2009130763A1 - Electric circuit switching operation device - Google Patents

Abstract

An electric circuit opening / closing operation device capable of stably operating an opening / closing operation by grasping an operation handle of the opening / closing operation device correctly regardless of individual differences is obtained. The operation handle 6b is provided with a recess 6d, and the handle operator can grasp the operation handle 6b so that the abdominal surface of the thumb is naturally fitted into the recess 6d. With the gripped state, the operation handle 6b can be easily rotated clockwise to change from the OFF state to the ON state. Moreover, if the nail entry preventing means is provided between the design panel 6c and the operation handle 6b, the operator's nail can be prevented from entering.

Description

  The present invention relates to an electric circuit switching operation device provided in a functional unit of a control center.

  According to JEM-1195 (JEM: Japan Electrical Manufacturers' Association Standard), a control center functional unit is a circuit unit of a motor control center having main circuit and auxiliary circuit devices necessary to satisfy a certain function. It is prescribed. In this functional unit, a circuit breaker is usually mounted for the purpose of safely interrupting the current during a short circuit. The circuit breaker is provided with an external electric circuit switching operation device with an operation handle to simplify the opening and closing operation of the circuit breaker and to provide an interlock function that prevents the functional unit from being pulled out when the circuit breaker is in the ON state. It has been.

  In Patent Document 1, in order to attach an external operation handle device (electric circuit opening / closing operation device) to a circuit breaker for wiring, a mounting seat is provided and this is tightened to a panel panel together with the circuit breaker with a screw. A device in which an external operation handle device is fastened to a mounting seat with a screw is disclosed.

By the way, when operating the operation handle provided in the functional unit of the control center, as will be described in detail with reference to FIGS. 10 to 14 to be described later, how to grip the operation handle differs depending on individual differences. If you try to operate with, you may not be able to operate because the necessary force does not enter, or even if you can operate, it may cause wrinkles on your fingers. In the case of a large-sized electric circuit opening / closing operation device, the operation load is increased, and thus the above problem is further increased.
Further, even when the operation is performed with the correct grip, depending on the length of the operator's nails, the nails may get caught between the operation handle and the design panel located at the position facing the operation handle.

JP-A-6-5191

In view of the above-described problems, an object of the present invention is to provide an electric circuit opening / closing operation device that allows an operator who grasps an operation handle to sense a grip that allows the operator to easily handle the operation handle and easily apply force.
It is another object of the present invention to provide a device capable of stably and reliably operating an electric circuit opening / closing operation device by preventing a claw from being caught.

The electric circuit switching operation device according to the present invention has an operation handle for electrically opening and closing the circuit breaker, and the operation handle is provided with a recess for designating a position of an operator's thumb holding the circuit breaker. is there.
The electric circuit opening / closing operation device according to the present invention further includes a nail entry preventing means for preventing an operator's nail from entering between the operation handle and the outer surface of the main body facing the operation handle.

According to the electric circuit opening / closing operation device according to the present invention, by providing a depression in the operation handle, there is an effect that an operator who grasps the operation handle can easily handle the operation handle and sense how to hold the force.
Further, by providing the nail entry preventing means, the nail can be prevented from being caught and the electric circuit opening / closing operation device can be operated stably and reliably.
Other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention with reference to the drawings.

It is a front view of the electric circuit switching operation apparatus in Embodiment 1 of this invention. It is a side view of FIG. It is the elements on larger scale of FIG. FIG. 4 is an enlarged side view of FIG. 3. FIG. 5 is an explanatory diagram of a state in which the operator correctly grasps the operation handle in FIG. 4. FIG. 6 is a partially enlarged view of FIG. 1 in the second embodiment. FIG. 7 is an enlarged side view of FIG. 6. FIG. 8 is an explanatory diagram of a state in which the operator correctly grasps the operation handle in FIG. 7. FIG. 10 is a perspective view showing an operation handle with a spacer removed from a design panel in a second embodiment. It is the elements on larger scale in the conventional electric circuit opening / closing operation apparatus. It is an enlarged side view of FIG. It is explanatory drawing of the state which grasped the operation handle shown in FIG. It is explanatory drawing of the other state which grasped the operation handle shown in FIG. It is explanatory drawing of an example of the state which grasped the operation handle in the conventional electric circuit opening / closing operation apparatus.

Embodiment 1 FIG.
1 to 5 illustrate a first embodiment of an electric circuit opening / closing operation device according to the present invention. FIG. 1 is a front view of an electric circuit opening / closing operation device (hereinafter simply referred to as an opening / closing operation device), FIG. 1 is a side view of FIG. 1, FIG. 3 is a partially enlarged view of FIG. 1, FIG. 4 is an enlarged side view of FIG. 3, and FIG. 5 is an explanatory view of a state in which an operator correctly grasps an operation handle in FIG. On the other hand, FIG. 10 is a partially enlarged view corresponding to FIG. 3 in the conventional opening / closing operation device, FIG. 11 is an enlarged side view corresponding to FIG. 4, and FIGS. 12 and 13 hold the operation handle shown in FIG. It is explanatory drawing of a state.

  1 and 2, the functional unit 1a of the control center has a connector 1b connected to a power source, and also has a circuit breaker 1c, an opening / closing operation device 1d as an example of the opening / closing operation device of the present invention, a current Sensor / zero-phase current transformer 1e, electromagnetic switch 1f, control circuit protection fuse 1g, control circuit terminal block 1h, electromagnetic relay 1j for realizing various sequences, and connector for sending power from the functional unit to the load 1k.

  3 to 5, 10, and 11, the opening / closing operation device 1 d includes an operation handle 6 b, a recess 6 d provided in the operation handle 6 b, and a design panel 6 c that displays the ON / OFF state of the opening / closing operation device 1 d. It is configured.

  In FIG. 3, the recess 6d is provided on the left side in the longitudinal direction of the operation handle 6b (the lower side in FIG. 3), so that the handle operator of the right-handed arm, as shown in FIG. Is gripped on the operation handle 6b as a state of naturally fitting in the recess 6d. In this state, the operation handle 6b can be easily rotated clockwise to change from the OFF state to the ON state. When the handle operator is left-handed, it is preferable to provide a dent in place of the dent 6d on the right side surface (upper side surface in FIG. 3) of the operation handle 6b so that it can be rotated clockwise. Further, when the handle operator may be switched between a right-handed person and a left-handed person, it is preferable to provide a recess 6d on each of the left and right surfaces of the operation handle 6b. When changing from the ON state to the OFF state, the operation handle 6b is rotated counterclockwise with the right hand or the left hand. The area, maximum depth, shape, etc. of the recess 6d are not particularly limited as long as an operator holding the operation handle 6b can recognize the position naturally.

  In contrast to the above, in the prior art in which the recess 6d is not provided, the handle operator grips the operation handle 6b with a fingertip as shown in FIG. 12, or with the reverse hand as shown in FIG. As a result, there is a problem that the force is difficult to be applied and the fingers and arms are painful.

Embodiment 2. FIG.
FIGS. 6 to 9 illustrate a second embodiment of the opening / closing operation device of the present invention. FIG. 6 is a partially enlarged view of FIG. 1, similar to FIG. 3, and FIG. FIG. 8 is an explanatory view showing a state in which the operator correctly holds the operation handle in FIG. FIG. 9 is a perspective view showing an operation handle with a spacer removed from the design panel. On the other hand, FIG. 14 is an explanatory view of an example of a state in which an operation handle is grasped in a conventional opening / closing operation device.

  6, 7 and 9, a disc-shaped spacer 6e as an example of a raised body as a nail entry preventing means is inserted between the design panel 6c and the operation handle 6b. Is engaged with and coupled to the operation handle 6b, and the spacer 6e also rotates as the operation handle 6b rotates. As shown in FIG. 9, the outline of the recess 6d is substantially elliptical. As shown in FIG. 8, the effect described in the first embodiment can be obtained by holding the operation handle 6b so that the operator's nail is prevented from entering and the operator's thumb is positioned in the recess 6d. . On the other hand, in the case of the conventional operation handle 6b in which the operation handle 6b has no recess 6d and no spacer 6e, as shown in FIG. 14, the operator's handle is between the design panel 6c and the operation handle 6b. Not only does the nail enter and the operation handle 6b cannot be accurately operated, but there is also a problem that even an accident that hurts the nail occurs.

  The present invention has been described in detail with reference to the first and second embodiments. However, the present invention is not limited to the first and second embodiments, and is in accordance with the problem to be solved by the present invention and the spirit of the solution. Various modified forms are also included. The operation handle may have a shape other than the shape shown in FIGS. 3 and 6.

The electric circuit switching operation device of the present invention has an operation handle for electrically opening and closing the circuit breaker, and the operation handle is provided with a recess for designating a position of an operator's thumb that holds the operation handle . A nail entry preventing means for preventing an operator's nail from entering between the operation handle and the outer surface of the main body facing the operation handle is provided.

Claims (4)

  An electric circuit opening / closing operation device having an operation handle for electrically opening and closing the circuit breaker, wherein the operation handle is provided with a recess for designating a position of an operator's thumb holding the operation handle.   2. The electric circuit opening / closing operation device according to claim 1, further comprising a claw entry preventing means for preventing the operator's claw from entering between the operation handle and the outer surface of the main body facing the operation handle.   The nail entry preventing means is a spacer inserted between the operation handle and the outer surface of the main body facing the operation handle, and the spacer engages with the operation handle, and rotates with the operation handle. 3. The electric circuit opening / closing operation device according to claim 2, wherein the electric circuit opening / closing operation device is configured to rotate.   The electric circuit switching operation device according to any one of claims 1 to 3, wherein the circuit breaker is a circuit breaker for wiring.

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