JP3997725B2 - Control equipment - Google Patents

Description

[0001]
BACKGROUND 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 including a setting operation key on the front surface of a case.
[0002]
[Prior art]
In this type of control device, by operating the key protect switch provided on the circumferential wall of the case, for example, the lower surface, so that the set state set by the operation keys on the front of the case is not inadvertently changed. In addition, a device having a key protection function that disables the operation of the operation keys on the front surface of the case is known.
[0003]
[Problems to be solved by the invention]
In such a conventional example, when mounting a plurality of devices in a horizontal direction on the panel, the bottom surface of the case of each device is exposed completely, so even if the cases are placed close together and placed compactly, The key protection switch on the bottom of the case can be operated. However, when arranging the keys in the vertical direction, it is necessary to leave a large space between the cases arranged in the vertical direction so that the key protection switch on the bottom of the case can be operated. However, a large space is required to install a plurality of devices side by side in the vertical direction.
[0004]
The present invention has been made paying attention to such points, and has as its main purpose to enable a required operation to be easily performed while installing a plurality of control devices in parallel in an arbitrary direction. To do.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows.
[0006]
The control device of the present invention includes an operation key disposed on the front surface of the case and a key protection switch for disabling operation of the operation key, and is inserted into a mounting hole formed in a panel of the control panel. In the control device to be mounted, the operation part of the key protection switch can be slid by integrating it from one peripheral wall surface to the other peripheral wall surface at the corner formed by two adjacent peripheral wall surfaces other than the front surface of the case. The two peripheral wall surfaces are either 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, and the operation unit extends along the front-rear direction of the case. The slide is possible.
[0007]
According to the present invention, the operation portion of the key protect switch is provided 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 multiple devices are installed side by side, the operation unit installed on the upper or lower surface of each case is exposed, and when multiple devices are installed side by side, The operation unit installed on the left or right side is exposed, and the key protect switch can be easily slid by the operation unit that is greatly exposed even when a plurality of cases are arranged close to each other.
[0012]
In a preferred embodiment of the present invention, the operation portion, a portion positioned in front Symbol corners, and recessed form from the circumferential wall.
[0013]
According to the present invention, when the case is inserted into the mounting hole of the panel, the operation part located at the corner is not caught by the edge of the mounting hole and is not inadvertently operated. It does not have to be handled carefully.
[0014]
In still another embodiment of the present invention, display means for displaying a key protection state is provided.
[0015]
According to the present invention, it is possible to easily visually check whether or not the key protection state is set.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
FIG. 1 is a perspective view of a timer taken as an example of a control device according to the present invention as viewed from the front. The timer case 1 is formed in a box shape that is long in the front and rear, and is provided with an LED display unit 2 and various operation keys 3, 4, and 5 on the front surface, and an external wiring connection unit 6 on the back surface of the case 1. Is provided.
[0018]
The display unit 2 displays a preset value t and a measured time value T in units of “hour”, “minute”, and “second”, and displays a control output display a, a reset display b, and a key protection display c. Is done.
[0019]
The operation key 3 is an up key for changing a preset value, and changes the set value in units of “hour”, “minute”, and “second” in the addition direction. The operation key 4 is a down key for changing a preset value, and changes the set value in units of “hour”, “minute”, and “second” in the subtraction direction. The operation key 5 is a reset key, and the time value and output are reset, and the reset display b appears.
[0020]
In addition, an operation knob 7 serving as an operation unit that is operated to disable operation of the operation keys on the front surface is provided at a corner portion formed by the upper surface and the right side surface of the case 1.
[0021]
As shown in FIGS. 2 and 3, the operation knob 7 has a front shape formed in an inverted L shape, and is fitted in and attached to an opening 8 formed in a corner portion of the case 1 so as to be slidable back and forth. From either the right side or the right side, a slide operation can be easily performed with a fingertip without using a tool such as a screwdriver.
[0022]
A recess 10 that engages with the upper edge 8a of the opening 8 is formed on the inner surface of the operation knob 7, and a guide protrusion 11 that engages with the lateral edge 8b of the opening 8 is provided. It is supported so that it can slide back and forth. Further, the pin-like protrusion 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.
[0023]
A key protect switch 14 is mounted on the end of the substrate 9 housed in the case 1 so as to face the opening 8. The key protect switch 14 disables operation of the operation key on the circuit, and a pair of front and rear operation protrusions 15 provided on the inner surface of the operation knob 7 are engaged with the operation protrusion 14a of the key protection switch 14 from the front and rear. Thus, the operation projection 14a is displaced back and forth by a back and forth slide operation of the operation knob 7.
[0024]
As shown in FIG. 4, the timer (control device) is inserted into the mounting hole 17 formed in the panel 16 of the control panel from the front and fixed, but a plurality of timers are arranged in parallel in the lateral direction. At the time of deployment, the operation knob 7 of each case 1 can be operated from the upper surface, so that each case 1 can be brought close enough to be arranged side by side. In addition, as shown in FIG. 5, when a plurality of timers are arranged in parallel in the vertical direction, the operation knob 7 of each case 1 can be operated from the side surface, so that each case 1 is brought close enough to move up and down. Can be parallel.
[0025]
In addition, this invention can also be implemented with the following forms.
[0026]
(1) As shown in FIGS. 6 and 7, when the notch 7a is formed at the corner of the outer surface of the operation knob 7 and is largely recessed in the opening 8, the case 1 is inserted into the mounting hole 17 of the panel. At the time of insertion, there is no possibility that the operation knob 7 is hooked on the inner edge of the corner portion of the mounting hole 17 and inadvertently operated.
[0027]
(2) The operation knob 7 only needs to be provided on two adjacent peripheral wall surfaces of the case 1, and any of the upper left corner, the lower right corner, or the lower left corner as well as the upper right corner as described above. It may be deployed in a plurality, or a plurality may be deployed.
[0028]
(3) In the above-described 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 different key protect switches are operated by each operation knob and a mode in which a single key protect switch is operated by both operation knobs are conceivable.
[0030]
【The invention's effect】
As is clear from the above description, according to the present invention, since the operation unit that performs the same function is provided on two adjacent surfaces of the peripheral wall surface of the case, a plurality of devices can be sufficiently arranged in the left-right direction or the vertical direction. The operation unit can be easily operated even if they are arranged close to each other, and in particular, by making the operation unit an operation unit of a key protection switch, a plurality of control devices can be arranged in a compact manner in any direction. Even if installed, the key protect switch can be operated from two sides of 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 an operation tool for operating a key protect switch as viewed from the lower side inside. FIG. 4 is a perspective view from the back side showing an example of the usage pattern. FIG. 5 is a perspective view from the back side showing another example of the usage pattern. FIG. 6 is a timer equipped with another type of operation tool. [FIG. 7] A longitudinal front view showing a mounting portion of another type of operation tool [Explanation of symbols]
1 Case 7 Operation tool (operation knob)
14 Key protect switch

Claims (3)

In a control device that includes an operation key disposed on the front surface of the case, and a key protection switch that disables operation of the operation key, and is inserted into a mounting hole formed in a panel of the control panel,
The operation part of the key protection switch is slidably arranged on the corner formed by two adjacent peripheral walls other than the front surface of the case from one peripheral wall surface to the other peripheral wall surface.
The two peripheral wall surfaces are 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,
The control device , wherein the operation unit is slidable along a front-rear direction of the case . The operation unit, the control apparatus of the portion located in front Symbol corners, claim 1, wherein the concaved formed from the circumferential wall. Control device according to claim 1 or 2 comprising display means for displaying key protected.

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