JP2002344160A - Control equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out key protect operation readily with a plurality of control equipments disposed parallel in proximity in an arbitrary direction, in a control equipment having key protect function which disables setting change by means of operation of an operation key provided to a front side of a case body. SOLUTION: An operation knob 7 for operating a key protect switch is provided to two adjacent circumferential wall surfaces of a case 1. It is made integral over one circumferential wall surface and the other circumferential wall surface, and is disposed in a corner formed of two adjacent circumferential wall surfaces of the case 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device such as a counter and a timer, and more particularly, to a control device having an operation key for setting on a front surface of a case.

[0002]

2. Description of the Related Art In a control device of this kind, a key protect switch provided on one peripheral wall surface of a case, for example, a lower surface of the case, so that a set state set by an operation key on a front surface of the case is not accidentally changed. There is known a device provided with a key protection function for disabling operation of operation keys on the front surface of a case by operating the device.

[0003]

In such a conventional example, when a plurality of devices are mounted side by side on a panel, the lower surface of the case of each device is completely exposed, so that the cases are sufficiently brought close to each other. Even if they are installed compactly side by side,
The key protect switches on the lower surface of each case can be operated, but when arranging in the vertical direction, there must be a large space between the cases arranged vertically so that the key protect switches on the lower surface of the case can be operated. In addition, a large space is required to arrange a plurality of devices in a vertical direction.

The present invention has been made in view of such a point, and it is an object of the present invention to make it possible to easily perform a required operation while arranging a plurality of control devices in parallel in a desired direction. Main purpose.

[0005]

In order to achieve the above object, the present invention has the following configuration.

[0006] The control device of the present invention is provided with an operation section that performs the same function on two adjacent peripheral wall surfaces other than the front surface of the case.

According to the present invention, the operation section having the same function is provided, for example, on the upper surface and the left or right side surface of the case, or on the lower surface and the left or right side surface of the case. Therefore, when a plurality of devices are arranged side by side, the operation unit installed on the upper surface or the lower surface of each case is exposed, and when a plurality of devices are arranged vertically, each case is The operation unit installed on the left side surface or the right side surface is exposed, and even if a plurality of cases are arranged close to each other, the operation unit that is largely exposed can be easily operated.

The control device according to the present invention is a control device comprising an operation key disposed on a front surface of a case and a key protect switch for disabling operation of the operation key. Are arranged on two adjacent peripheral wall surfaces other than the front surface of the case.

According to the present invention, the operation section of the key protection switch is provided on, for example, the upper surface and the left or right side surface of the case, or the lower surface and the left or right side surface of the case. Therefore, when a plurality of devices are arranged side by side, the operation unit installed on the upper surface or the lower surface of each case is exposed, and when a plurality of devices are arranged vertically, the case of each case is exposed. The operation unit installed on the left side surface or the right side surface is exposed, and even if a plurality of cases are arranged close to each other, the key protection switch can be easily operated by the largely exposed operation unit.

[0010] In one embodiment of the present invention, the operation portion is provided integrally at a corner formed by the two peripheral wall surfaces from one peripheral wall surface to the other peripheral wall surface.

According to the present invention, the operation unit can be operated on two adjacent surfaces of the peripheral wall of the case, but only one operation unit is required.
And it is effective for cost reduction.

In a preferred embodiment of the present invention, the operation portion is slidable, and a portion located at the corner is formed so as to be recessed from a peripheral wall surface.

According to the present invention, when the case is inserted and mounted in the mounting hole of the panel, the operation unit located at the corner is not inadvertently operated by being hooked on the edge of the mounting hole, and the case assembly is prevented. It is not necessary to handle it with special care when attaching.

In still another embodiment of the present invention, there is provided a display means for displaying a key protection state.

According to the present invention, it is possible to easily visually check whether or not a key is protected.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a timer as an example of a control device according to the present invention as viewed from the front. The case 1 of this timer is formed in a long box shape in front and back, and has an LED display unit 2 and various operation keys 3, 4, 4 on its front surface.
5 is provided, and an external wiring connection part 6 is provided on the back surface of the case 1.

In the display unit 2, "hour", "minute",
The preset value t and the clock value T are displayed in the unit of “second”, and the control output display a, the reset display b, and
The key protection display c is displayed.

The operation key 3 is an up key for changing a preset value, and changes a set value in each unit of "hour", "minute", and "second" in an adding direction. The operation key 4 is a down key for changing a preset value, and includes “hour”, “minute”, and “second”.
Change the set value of each unit in the subtraction direction. The operation key 5 is a reset key, and the clock value and the output are reset, and the reset display b appears.

At the corner formed by the upper surface and the right side surface of the case 1, there is provided an operation knob 7 as an operation portion operated to disable operation of the operation keys on the front surface.

As shown in FIGS. 2 and 3, the operation knob 7 has an inverted L-shaped front surface.
Is inserted into the opening 8 formed at the corner of the case so as to be slidable back and forth, and can be easily slid with a fingertip from either the upper surface of the case or the right side surface without using a tool such as a screwdriver.

The inner surface of the operation knob 7 has an upper edge 8
a is formed, and a guide projection 11 is provided which engages with the lateral edge 8b of the opening 8, and is supported by these two guides so as to be slidable back and forth.
Further, the pin-shaped projection 12 provided on the inner surface of the operation knob 7 is engaged with the guide groove 13 on the right side wall of the case 1, thereby preventing the operation knob 7 from coming off.

At the end of the substrate 9 housed in the case 1,
A key protection switch 14 is mounted facing the opening 8. The key protect switch 14 disables operation of operation keys on a circuit. A pair of front and rear operation protrusions 15 provided on the inner surface of the operation knob 7 engage with operation protrusions 14a of the key protection switch 14 from front and rear. Then, the operation protrusion 1 is operated by sliding the operation knob 7 back and forth.
4a is operated to be displaced back and forth.

As shown in FIG. 4, such a timer (control device) is inserted into the mounting hole 17 formed in the panel 16 of the control panel from the front and fixed thereto. When the case is arranged side by side, the operation knob 7 of each case 1 can be operated from the upper surface.
Can be juxtaposed sufficiently and arranged side by side. Also,
As shown in FIG. 5, when a plurality of timers are arranged in parallel in the vertical direction, the operation knobs 7 of each case 1 can be operated from the side, so that the cases 1 are brought close enough to be arranged vertically. be able to.

The present invention can be embodied in the following modes.

(1) As shown in FIGS. 6 and 7, a notch 7a is formed in the outer corner of the operation knob 7 so as to be largely recessed into the opening 8, so that the case 1 is attached to the panel. When inserting into the hole 17, there is no possibility that the operation knob 7 is hooked on the inner edge of the corner of the mounting hole 17 and operated carelessly.

(2) The operating knob 7 may be provided on two adjacent peripheral wall surfaces of the case 1, and in addition to the upper right corner, the upper left corner, the lower right corner, or the lower left corner as described above. Any of the units may be provided, or a plurality of units may be provided.

(3) In the above embodiment, the operation knob 7 has an integral structure facing two adjacent peripheral wall surfaces. However, an independent operation knob can be provided on each of the two adjacent peripheral wall surfaces. In this case, a mode in which each operation knob operates a different key protection switch, and a mode in which both operation knobs operate a single key protection switch are conceivable.

(4) If a push-type key protection switch 14 is used, a push-in operation button can be used as an operation tool for performing key protection.

[0030]

As is apparent from the above description, according to the present invention, since the operating portion having the same action is provided on two adjacent surfaces on the peripheral wall of the case, a plurality of devices can be moved in the left-right direction. Alternatively, the operation unit can be easily operated even when the operation units are arranged in parallel in a sufficiently close vertical direction, and in particular, by operating the operation unit as an operation unit of a key protection switch, a plurality of control devices can be arbitrarily set. Even if the switches are compactly arranged in the direction, the key protect switch can be operated from two surfaces on the outer periphery of the case.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a timer which is an example of a control device according to the present invention.

FIG. 2 is a perspective view of the operation tool for operating the key protection switch as viewed from the lower inside.

FIG. 3 is a longitudinal sectional front view showing a procedure for assembling the operation tool.

FIG. 4 is a perspective view from the rear side showing an example of a usage pattern;

FIG. 5 is a perspective view from the rear side showing another example of the usage mode.

FIG. 6 is an overall perspective view of a timer provided with another type of operation tool.

FIG. 7 is a longitudinal sectional front view showing a mounting portion of an operation tool of another embodiment.

[Explanation of symbols]

 1 case 7 operation tool (operation knob) 14 key protect switch

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4E360 BA04 BB04 BB11 BB21 BC01 BC16 EC12 ED03 ED28 GA04 GA44 GA46 GB99 5B020 DD02 EE28 5H209 DD08 EE03 FF06 GG08 HH39 JJ01

Claims (5)

[Claims] 1. A control device characterized in that an operation section that performs the same function is provided on two adjacent peripheral wall surfaces other than the front surface of the case. 2. An operation key disposed on a front surface of the case,
A control device comprising: a key protection switch for disabling operation of the operation key, wherein an operation unit of the key protection switch is disposed on two adjacent peripheral walls other than the front surface of the case. 3. The control device according to claim 2, wherein the operation unit is integrally provided at a corner formed by the two peripheral wall surfaces from one peripheral wall surface to the other peripheral wall surface. 4. The control device according to claim 3, wherein the operation portion is slidable, and a portion located at the corner is formed to be recessed from a peripheral wall surface. 5. The control device according to claim 2, further comprising display means for displaying a key protection state.