JP4671909B2 - Circuit breaker - Google Patents

Description

  The present invention relates to an internal accessory device that outputs the contact open / close state and trip state of a circuit breaker as a contact signal, and the attachment position of the internal accessory device and the number of contacts can be flexibly configured according to the user's request, and the internal accessory device The present invention relates to a circuit breaker capable of simplifying inventory management by standardizing a device and an internal accessory device thereof.

  In the circuit breaker, a plurality of auxiliary switches (AX) that output the contact open / closed state as contact signals and alarm switches (AL) that output the trip state can be attached as accessory devices in the casing of the circuit breaker body.

When a user uses an accessory device, the type of output required and the number of points vary from user to user.
On the other hand, conventionally, the type of output to be attached and its attachment position are determined in advance, and it cannot be said that the user's request is sufficiently satisfied. In addition, the auxiliary switch auxiliary device and the alarm switch auxiliary device both output the mechanical state of the circuit breaker as a contact signal, but are separate auxiliary devices, and inventory management is complicated due to the increase in product types. Met.

  In order to deal with such a problem, the conventional technique takes a method of standardizing the attached device to be attached (see, for example, Patent Document 1). A plurality of attachment frames for attaching the accessory device to the circuit breaker body are prepared, and an auxiliary switch actuator and an alarm switch actuator are arranged in each attachment frame, and a predetermined function is assigned to each attachment frame. All the mounting frames have the same shape, and a function assigned to the mounting frame is realized by incorporating a standard accessory device into an arbitrary mounting frame.

  In this method, (1) A user can incorporate as many accessory devices as necessary for the necessary functions, and no waste occurs. (2) Since the accessory devices are standardized, the number of product types is reduced and inventory management is simplified. (3) There is a merit that the configuration can be easily changed after installation.

  However, since the function assignment is determined for each mounting frame, there is a problem that it cannot sufficiently meet various user needs.

As an arbitrary function assigned to each mounting frame, another conventional technique shows a method of mounting a plurality of functions on a module and selecting the function in the module mounting direction (for example, Patent Documents). 2).
However, there is a problem that there is no function for preventing the display of the selected function and the wrong installation.

In another prior art, a different type of accessory device can be attached to the same mounting frame, and a display portion that can be confirmed from the outside is provided so that the type can be easily distinguished after the accessory device is attached (for example, patents). Reference 3).
Attached devices are prepared for each type, and display portions are provided in advance, so there is no mistake in attachment, and confirmation after attachment is easy. However, it is necessary to prepare an accessory device for each function.

JP-A-6-236720 Japanese Patent Laid-Open No. 5-041583 Japanese Patent Laid-Open No. 6-333489

  The present invention realizes various mounting positions and the number of contact points according to the user's request by using an internal auxiliary device common to a plurality of functions when incorporating an auxiliary device into a circuit breaker, This makes it difficult to cause display errors.

  In the circuit breaker according to the present invention, the attachment portion provided in the circuit breaker body for incorporating the attachment device, the attachment device whose function is selectively changed by changing the attachment position with respect to the attachment portion, and the attachment An interlock lever whose position is selectively changed according to a change in the function of the apparatus is provided, and display means for displaying a selection function according to the change in the position of the interlock lever is provided.

  According to the present invention, in the attachment of the accessory device to the circuit breaker body, various attachment positions and the number of contacts according to the user's request are realized by using the accessory device common to a plurality of functions, and the attachment of the accessory device is performed. It is possible to make mistakes and display errors less likely to occur.

Embodiment 1 FIG.
An embodiment according to the present invention will be described with reference to FIGS. 1A and 1B are a top view and a side view showing a configuration when an auxiliary output (AX) function of an internal auxiliary device according to an embodiment of the present invention is selected. FIG. 1A shows a top view, and FIG. 1B shows a side view. FIG. 2A is a top view and a side view showing a configuration when an alarm output (AL) function of the internal auxiliary device in the embodiment according to the present invention is selected. 2A shows a top view, and FIG. 2B shows a side view. FIG. 3 is a cross-sectional view of a mounting frame for an internal accessory device provided in the circuit breaker body. FIG. 4 is a top view and a side view showing a normal attachment state to the attachment frame provided in the circuit breaker main body when the auxiliary output (AX) function of the internal auxiliary device in the embodiment according to the present invention is selected. 4A shows a top view and FIG. 4B shows a side view. FIG. 5 is a top view and a side view showing a normal attachment state to the attachment frame provided in the circuit breaker body when the alarm output (AL) function of the internal auxiliary device in the embodiment according to the present invention is selected. FIG. 5A shows a top view, and FIG. 5B shows a side view. FIG. 6 is a top view and a side view showing an abnormal attachment state to the attachment frame provided in the circuit breaker body when the auxiliary output (AX) function of the internal auxiliary device according to the embodiment of the present invention is selected. 6A shows a top view, and FIG. 6B shows a side view. FIG. 7 is a side view showing the mounting configuration in the left-right reversal direction when the auxiliary output (AX) function of the internal auxiliary device according to the embodiment of the present invention is selected.

  In the figure, an operating lever 2 is attached to the internal accessory device 1, and this is incorporated into the housing of the internal accessory device 1 by pushing it up to the internal accessory device main body side (upper side view). The switch works. A contact signal of the micro switch can be taken out by connecting an electric wire to the terminal 6.

  The internal accessory device 1 can be assembled to the mounting frame F provided on the circuit breaker body CA in both the orientation shown in FIG. 1B and the orientation reversed in the left-right direction as shown in FIG. And At this time, the actuating lever 2 is provided at a position deviated from the center axis of reversal so as to be in a different position when the internal accessory device 1 is reversed.

The internal attachment device 1 is provided with a display lever 3 and is attached so as to be rotatable with respect to the internal attachment device body about a shaft 7. The display lever 3 is located at two positions, the position shown in FIG. Can be switched. FIG. 1 shows a state in which the auxiliary output (AX) function is selected, and FIG. 2 shows a state in which the alarm output (AL) function is selected.
The upper surface side of the internal accessory device of the display lever 3 is a display switching unit 4, and the contents described on the upper surface of the internal accessory device can be selectively displayed by switching the display lever 3. In the state of FIG. 1 in which the display lever 3 has selected the auxiliary output, the right half of the description is hidden by the display switching unit 4, so that “AX” is displayed on the upper surface of the internal accessory device as shown in FIG. Is displayed. Similarly, in the state of FIG. 2 in which the display lever 3 selects the alarm output, “AL” is displayed on the upper surface of the internal accessory device as shown in FIG.

  FIG. 3 is a cross-sectional view of the mounting frame F for the internal accessory device provided in the circuit breaker body CA. The mounting frame F is provided with an auxiliary switch actuator 8 and an alarm switch actuator 9. The auxiliary switch actuator 8 is linked to a mechanism that opens and closes the main circuit contact of the circuit breaker body (not shown), and operates in the vertical direction in FIG. 3 in accordance with the open / close state of the main circuit. The alarm switch actuator 9 is also linked to a trip mechanism portion of a circuit breaker body mechanism portion (not shown), and operates in the vertical direction of FIG. 3 according to the trip state.

  The actuators 8 and 9 are provided at locations where the operation lever 2 is located when the internal accessory device 1 is assembled. In this embodiment, the auxiliary switch actuator 8 is placed at a position where it comes into contact with the operating lever 2 when the accessory device 1 is assembled in the direction shown in FIG. Is arranged.

  A fitting portion 10 with the interlock lever 5 is provided at the bottom of the attachment frame F, and the internal attachment device 1 is attached to the attachment frame only when the interlock lever 5 provided in the internal attachment device 1 is at a predetermined position. It can be attached to F.

The case where the auxiliary device 1 is incorporated in the mounting frame F as an auxiliary switch and the auxiliary output (AX) function is selected will be described.
First, the display lever 3 of the accessory device 1 is switched to the auxiliary switch side. As a result, as shown in FIG. 1A, an “AX” display indicating that the auxiliary switch has been switched appears on the upper surface of the attached device. At the same time, the interlock lever 5 on the bottom surface of the attached device is switched to the left side as shown in FIG. 1B in accordance with the movement of the display lever 3.
Next, the internal auxiliary device 1 is incorporated into the mounting frame F. At this time, if the operating lever 2 of the internal auxiliary device 1 is in a direction in contact with the auxiliary switch actuator 8, the interlock lever 5 is mounted as shown in FIG. Since it meshes with the fitting portion 10 provided on the bottom surface of F, the internal accessory device 1 can be mounted to the mounting frame F to a predetermined depth.
However, when the internal attachment device 1 is to be mounted in the direction in which the operating lever 2 contacts the alarm switch actuator 9, the interlock lever 5 is fitted to the fitting portion 10 provided on the bottom surface of the mounting frame F as shown in FIG. The internal accessory device 1 cannot be mounted without meshing.
Therefore, when the display lever 3 of the internal auxiliary device 1 is switched to the auxiliary switch side, “AX” indicating the auxiliary output is displayed on the internal auxiliary device body, and the operation lever 2 is set to be incorporated into the circuit breaker main body CA. It can be attached only in the direction in which it contacts the auxiliary switch actuator 8.

When the built-in accessory device 1 is used as an alarm switch and the alarm output (AL) function is selected, the display lever 3 is switched to the alarm switch side. As a result, as shown in FIG. 2A, an “AL” display appears on the upper surface of the internal accessory device indicating that the alarm switch is selected.
In this state, the interlock lever 5 is in the opposite position in the left-right direction in the illustrated state with respect to the internal auxiliary device 1 when the auxiliary output (AX) function is selected as the auxiliary switch described above, and is incorporated in the mounting frame F. As shown in FIG. 5, it is necessary to make the direction opposite to the case where the auxiliary output (AX) function is selected using the auxiliary device 1 as an auxiliary switch. By reversing the internal accessory device 1, the operating lever 2 comes into contact with the alarm switch actuator 9. At this time, the interlock lever 5 interferes in the same manner as when the auxiliary output (AX) function is selected as the auxiliary switch, so that the internal accessory device 1 cannot be attached in the opposite direction to FIG.

  In this description, the switch actuators 8 and 9 are provided on the bottom surface of the mounting frame F of the internal accessory device 1 and their operating directions are the vertical directions in FIG. There is no problem even if the actuators 8 and 9 are provided at locations other than the bottom surface of the mounting frame F or their operating directions are changed as long as they perform symmetrical operations.

  Further, the interlock lever 5 and the function display portion are not limited to the positions shown in this embodiment, and the operation of the display lever 3 is also a rotation operation around the axis in this embodiment, but the members are parallel. A desired function can be realized even in a structure that moves to a position.

According to the embodiment of the present invention, the mounting portion made of the mounting frame F provided in the circuit breaker main body CA and the mounting position with respect to the mounting portion made of the mounting frame F are changed in order to incorporate the internal accessory device 1. The auxiliary output (AX) function as an auxiliary switch and the alarm output (AL) function as an alarm switch are selectively changed by the internal auxiliary device 1, and selectively according to the function change of the internal auxiliary device 1 An interlock lever 5 whose relative position with respect to the internal accessory device 1 is changed, and is mounted integrally with the interlock lever 5 in conjunction with the interlock lever 5 and includes the mounting frame F of the internal accessory device 1. Auxiliary output (AX) machine according to the change of the relative position of the interlock lever 5 with respect to the internal accessory device 1 by the change of the assembly position with respect to the part Or the alarm output (AL) function has been selected, the display lever 3 is provided. Therefore, when an accessory device is incorporated into a circuit breaker, an internal accessory device common to multiple functions is used. Various mounting positions and the number of contacts according to the user's request can be realized, and it is possible to make it difficult to make an attachment error or display error of the accessory device.
That is, a plurality of attachment frames F for assembling attached devices are provided in the circuit breaker body CA, and two types of actuators are assigned to each attachment frame F. When a standard attachment device is incorporated into the attachment frame F, one of two types of functions assigned to each attachment frame F is selected according to the attachment direction of the attachment device.
In addition, the standard internal accessory device 1 is provided with a display lever 3 for displaying the selected function. By switching the display lever 3, the selected function can be easily confirmed and synchronized with the display lever 3. Thus, the internal attachment device 1 can be incorporated into the mounting frame F only in the direction in which the interlock lever 5 operates and the function selected by the display lever 3 is realized.
Specifically, a circuit breaker including the following components and an internal accessory device for the circuit breaker are configured.
a) The internal accessory device 1 includes a display lever 3 for displaying a selected function name and an interlock lever 5 whose position is switched in synchronization with the display lever 3.
b) The mounting frame F provided in the circuit breaker main body CA for incorporating the internal auxiliary device 1 has an operation mechanism for transmitting mechanical movement from the circuit breaker main body CA to the internal auxiliary device 1 according to function. Two types are provided, and they are arranged at symmetrical positions with respect to the attachment device center line in a direction parallel to the direction in which the internal attachment device 1 is assembled to the mounting frame F, and the operations of the operation mechanisms are also symmetrical.
c) The internal accessory device 1 can be mounted on the mounting portion including the mounting frame F in a predetermined direction and a direction reversed with respect to the center line.
d) A fitting portion that accommodates the interlock lever 5 is provided in the mounting frame F so that the internal accessory device 1 can be mounted only in the direction in which the operation lever of the function selected by the display lever 3 contacts the operation lever.
Therefore, with this configuration, when the internal accessory device 1 is incorporated into the circuit breaker main body CA, various configurations according to the user's request can be realized using standard auxiliary devices without mistakes in function settings. It has such an effect.
That is, when incorporating the internal accessory device 1 into the circuit breaker main body CA, various configurations according to the user's request can be realized using the standard internal accessory device 1 without mistakes in function settings, and the internal accessory device. 1 has the effect of being able to easily and flexibly cope with addition of 1 and specification changes.

It is the top view and side view which show the structure at the time of auxiliary output (AX) function selection of the internal auxiliary | assistant apparatus in embodiment by this invention. It is the top view and side view which show the structure at the time of the alarm output (AL) function selection of the internal attachment apparatus in embodiment by this invention. It is sectional drawing of the attachment frame for internal attachment apparatuses provided in the circuit breaker main body in embodiment by this invention. It is the upper side figure and side view which show the normal attachment state to the attachment frame provided in the circuit breaker main body at the time of auxiliary output (AX) function selection of the internal attachment apparatus in embodiment by this invention. It is the top view and side view which show the normal attachment state to the attachment frame provided in the circuit breaker main body at the time of the alarm output (AL) function selection of the internal auxiliary device in embodiment by this invention. It is a side view which shows the abnormal attachment state to the attachment frame provided in the circuit breaker main body at the time of auxiliary output (AX) function selection of the internal attachment apparatus in embodiment by this invention. It is a side view which shows the attachment structure to the left-right reversal direction at the time of auxiliary output (AX) function selection of the internal auxiliary device in embodiment by this invention.

Explanation of symbols

1 Internal accessory, 2 Actuation lever, 3 Display lever, 5 Interlock lever, 6 Terminal, 8 Actuator for auxiliary switch, 9 Actuator for alarm switch.

Claims (2)

  Attached part provided in the circuit breaker body for incorporating the accessory device, an accessory device whose function is selectively changed by changing the assembling position with respect to the attaching part, selectively according to the function change of the accessory device The circuit breaker further comprises an interlock lever whose position is changed, and provided with display means for displaying a selection function in accordance with the change of the position of the interlock lever. The circuit breaker according to claim 1, further comprising a display lever that displays a selection function in response to a change in position of the interlock lever in conjunction with the interlock lever.

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