JPH0833317A - Operating board for active filter - Google Patents

Abstract

PURPOSE:To obtain an operating board for active filter which can be operated externally while rotating in the direction for facilitating visual confirmation of the indication. CONSTITUTION:The operating board for active filter comprises a hat-like panel body 12 incorporating an operating section 16 and an indicating section 17 integrally such that the section can be operated externally and inserted into a circular hole 19a made through an upper supporting board 19 in the filter body from below and stopped at the flange part, and a resilient member 13 interposed between a lower supporting board 21 in the filter body and the panel body 12 and holding the panel body 12 rotatably while pressing against the upper supporting board 19. The operating board further comprises a plurality of positioning pins 14 planted upward at the predetermined positions on the flange part of the panel body 12 and fitted in the positioning holes 19b made at predetermined positions of the upper supporting board 19 in order to position and temporarily secure the panel body 12, and a stopper 15 coupled with the rear surface of the panel body 12 and abuts against a stop board 22 provided on the lower supporting board 21 during rotation of the panel body 12 thus regulating the rotary motion range of the panel body 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control panel for an active filter for canceling higher harmonic components.

[0002]

2. Description of the Related Art In recent years, electric products having a power conversion device using a semiconductor element such as an inverter air conditioner have become widespread, and accordingly, harmonic interference frequently occurs.
Therefore, the number of cases in which an active filter (active filter) is introduced as a countermeasure against harmonics is increasing.
One specific example is shown in FIG. The active filter (1) (hereinafter referred to as AF) is a stationary type, has a control circuit and a high frequency inverter inside, and has a reverse phase compensation current (Ia) for canceling the harmonic current (IL) generated in the load. It is injected into the system bus by the above-mentioned inverter, and the drive of the inverter is controlled by the control circuit.

A control operation panel (2) including the operation section and the display section is provided on the external front surface, and the AF (1) is manually operated as appropriate from a front specific position. In addition to the operation panel shown in FIG. 4, for example, as shown in FIGS. 5 (a), 5 (b) and 5 (c), the operation panel is often used in a fixed power supply unit (UPS) for backup of a computer or the like ( There is 3). The operation panel (3) is a hat-shaped disc-shaped panel body having a circular bottom plate (3a) whose outer peripheral portion protrudes like a brim, and has an operation section (4) partially exposed on the surface for external operation and display. The display unit (5) is integrally built in, and in addition to the disc shown in the figure, a square unit is generally used. The operation section (4) is composed of the start and stop buttons (4a) and (4b), and the display section (5) is an indicator lamp (5).
It consists of a) and indicator LED (5b). And a circular hole (6a) formed in the upper support plate (6) in the main body
The operation panel (3) is fitted from below onto the bottom plate (3a) and locked by the flange portion of the bottom plate (3a), and is attached to the bottom plate (3a).
(8) is attached to the lower support plate (9) with a screw (10), and the operation panel (3) is fixed to the main body while the screw (10) is housed in the main body to maintain a good appearance.

[0004]

The problem to be solved is that when operating the control operation panels (2) and (3), the external operation and the visual inspection of the display are the easiest from one direction, while the operation panel (2 ) Since (3) is fixedly installed at the front fixed position of the device such as AF (1), it is not possible to arbitrarily select the operation and viewing direction, and when the installation position of the device is changed, the operation and display are performed at the same time. The direction also changes, and external operation and visual inspection of the display may become difficult depending on the changed direction.

[0005]

SUMMARY OF THE INVENTION According to the present invention, an operating section and a display section are integrally incorporated for external operation and display, and
A hat-shaped panel body inserted through a circular hole formed in the upper support plate in the filter body from below and locked by the collar portion, and interposed between the lower support plate and the panel body in the filter body,
An elastic member that elastically retains the panel body so as to press it against the upper support plate and rotatably holds it, and a positioning hole that is planted upward at a predetermined position of the panel body flange portion and is drilled at the predetermined position of the upper support plate. A plurality of positioning pins that are fitted into the panel to position and temporarily fix the panel body, and are connected to the lower surface of the panel body, and when the panel body rotates, the panel body rotates by contacting a locking plate provided on the lower support plate. It is characterized by comprising a stopper for limiting the range.

[0006]

According to the above technical means, the user appropriately pushes the panel body in accordance with an arbitrary AF installation position to rotate the panel body in a direction in which the external operation and the display can be easily viewed, and the panel body is positioned in that direction. Temporarily fix the AF and visually check the operation control and display.

[0007]

EXAMPLE An example of an AF operation panel according to the present invention is shown in FIGS.
This will be described below with reference to FIG. First, Fig. 1 (a) (b)
In (c), (11) is an AF operation panel according to the present invention,
(12) is a panel body, (13) is an elastic member, (14) is a positioning pin, and (15) is a stopper. Above panel body (12)
Is a hat-shaped disc whose bottom plate (12a) protrudes like a brim, and has an operating section (16) and a display section (17) that are partly exposed on the surface so that they can be operated and displayed externally. 16) is composed of a run button (16a) and a stop button (16b), and a display section (17) has a failure indicator light (17a) and a failure status indicator LED (1
7b) and. In addition, a U-shaped support (18a) is planted in the center of the lower surface of the bottom plate (12a), and the bottom plate ( Lock with the flange of 12a). As shown in FIG. 1B, the decorative plate (20) is attached flush with the upper surface of the panel body (12) to eliminate surface irregularities and maintain a good appearance.

The elastic member (13) is composed of a spring interposed between the lower support plate (21) and the column (18a) in the AF body so that the panel body (12) is pressed against the upper support plate (19). And, it is elastically held so as to be rotatable. Then, the support bolt (18b) is inserted into the spring (13) from the holding hole (21a) formed in the lower support plate (21) and attached to the column (18a) to guide the vertical movement of the panel body (12). And hold the spring (13) in place.

The positioning pin (14) is provided on the bottom plate (12) of the panel body.
Positioning pins (14) are planted at three locations on the collar of (a) upwards at 90 ° intervals, and at predetermined positions on the upper support plate (19).
The panel body (12) is differently fitted by selectively and appropriately fitting into one of the three positioning holes (19b) drilled corresponding to.
Position at a point. The stopper (15) is planted downward at a predetermined position on the lower surface of the panel body and is locked to a locking plate (22) provided on the lower support plate (21) to prevent the panel body (12) from rotating.
Regulate within 80 ° and do not cross the wiring wire.

The operation of the present invention based on the above configuration will be described below. First, as shown in the operation (1) of FIG. 2 (a), the panel body (12) is pushed in and rotated, and the positioning pin (14)
While the lower surface of the upper support plate (19) is pressed by the elastic biasing force, as is shown in the operation (2), the upper support plate (19) is selectively rotated along the circumferential direction to a desired position. Then,
When the positioning pin (14) reaches the positioning hole (19b) of the upper support plate (19), the panel body (12) is lifted by the elastic biasing force, and the positioning pin (14) is moved to the positioning hole (19).
Fit in b) to position and temporarily fix the panel body (12) at the selected position. That is, it is possible to select the operation and display direction by pushing and turning the operation panel (11), and selectively view the external operation and display from any three directions. Also, when changing the direction, the same operation may be repeated.

Therefore, the operation panel (11) is, for example, as shown in FIG.
As shown in (b) and FIGS. 3 (a), (b), and (c), it is attached to the upper surface of a compact AF (23) with a small capacity and movable casters. The AF (23) is used at an outlet level such as an inspection line of an office or a factory, and is installed in those places in any direction such as vertical and horizontal directions. for that reason,
As shown in FIG. 2B, the user appropriately rotates the panel body (12) in a direction in which the external operation and the display are easily visible according to the installation position of the AF (23). Then, by positioning and temporarily fixing the panel body (12) at a desired position selected from the three, and visually observing external operation and display from that direction, it is possible to easily operate and visually observe.

[0012]

According to the present invention, since the operation panel is rotatably provided on the active filter, the operation panel is selectively operated in a direction in which the user can easily see the external operation and the display according to the installation position of the active filter. By rotating, positioning and temporarily fixing in that direction, the active filter can be easily operated and viewed, greatly improving usability.

[Brief description of drawings]

1 (a), (b) and (c) are a plan view, a side view and a front view showing an embodiment of an active filter operating panel according to the present invention.

FIG. 2A is a perspective view showing an operation example of the active filter operation panel according to the present invention. (B) is a perspective view showing an operation panel according to the present invention provided in a small and simple active filter.

3 (a), (b) and (c) are perspective views showing a small and simple type active filter as seen from three obliquely upper directions.

FIG. 4 is a perspective view showing an example of a conventional stationary active filter.

5A, 5B, and 5C are a plan view, a side view, and a front view showing a conventional operation panel.

[Explanation of symbols]

 11 Operation panel 12 Panel body 13 Elastic member 14 Positioning pin 15 Stopper 16 Operation part 17 Display part 19 Upper support plate 19a Circular hole 19b Positioning hole 21 Lower support plate 22 Locking plate

Claims (1)

[Claims] 1. A hat shape in which an operating portion and a display portion are integrally built in for external operation and display, and which is inserted from below into a circular hole formed in an upper support plate in a filter body and locked by a collar portion. A panel body, an elastic member interposed between the lower support plate and the panel body in the filter body, for elastically holding the panel body against the upper support plate and rotatably holding the panel body; and the panel body flange portion. Is planted at a predetermined position in
A plurality of positioning pins that fit into positioning holes formed at predetermined positions of the upper support plate to position and temporarily fix the panel body, and are connected to the lower surface of the panel body, and are provided on the lower support plate when the panel body rotates. An operating panel for an active filter, comprising: a stopper that comes into contact with a locking plate to regulate a rotational movement range of a panel body.