JPS58172836A - Multiple stage switching timer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a multi-stage switching timer.

In the past, various timers have been proposed that can switch between all two stages of the set time range or more, but this can be done by changing the internal wiring, replacing the scale plate, or replacing the key that fits in the key box. However, there were disadvantages such as complicated switching work and loss of replacement parts.

The object of the present invention is to display a first series of scales with a full scale of, for example, 1, 10, 100, and a scale display of, for example, 8, 80, 8, by simply displacing a movable scale plate behind a fixed scale plate.
It is an object of the present invention to provide a multistage switching timer capable of switching the connection relationship of a built-in electric circuit at the same time as the second series scale display with 00 as the full scale is switched.

The multi-stage switching timer of the present invention is provided with a movable scale plate that is displaced in a predetermined direction by external operation in front of the set time switching circuit and the variable resistor body, and in front of the movable scale plate, the variable resistor A fixed scale plate equipped with multiple series of scales for reading the rotation angle of a single operating knob and a transparent window for displaying numbers related to each series of the scales,
According to the displacement of the movable scale plate, the display contents of the movable scale plate that belong to the one series can be seen through only those belonging to one series among the transparent windows, and the set time switching circuit It is characterized by being configured so that it can be switched.

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

FIG. 1 shows an exploded perspective view of the internal structure of a product implementing the present invention, excluding the housing.

On the printed circuit board 1 is a switching circuit pattern 2 which will be described later.
A variable resistor 6 is fixed to the center portion of the variable resistor 6, and its shaft 4 extends forward.

A rotating body 5 is rotatably disposed in front of the substrate 1. This rotary body 5 is provided with, for example, five types of magnification indicators (×尤・J, X8. An axial groove 8 is cut in the housing, and a firing element 9 that engages with the groove 8 and is suppressed by an elastic force is fixed in the housing. A sliding brush 10 is provided on the back surface of the rotating body 5 and contacts the printed circuit pattern 2 at a predetermined central angle.
is fixed. Further, the =IJ large middle top cam 11 of the rotating body 5 is fixed to rotate together with the rotating body 5. A gear 12 is provided at the rear side of the rotating body 5.
A small gear 16 is provided which meshes with the small gear 16 so that it can be rotated from the front of the panel. Therefore, the rotation of the pinion 16 causes the magnification display 6 and the sliding brush 10 to
and the cam 11 rotates, and every time the cam 11 rotates by a predetermined angle, the protrusion 9
falls into groove 8.

A movable scale plate 14 is provided in front of the rotating body 5. This movable scale plate 14 moves in the vertical direction when viewed from the front, and has a long hole 15 in the vertical direction in the center, and a bent portion 16 at the upper end thereof engages with the cam 11, forming a cam follower A lower assembly. , a linear spring 17□ constantly presses the movable scale plate 14 against the upper surface of the cam. On the front side, there are numbers (1, 2, 3) that are displayed from the transparent window when the scale plate 14 is displaced upwards, and numbers that are displayed when it is displaced downwards (, 2, 4, 6 degrees, 8.1) are shown superimposed.

A fixed scale plate 18 is provided on the niI side of the movable scale plate 14. This scale plate 18 includes a central hole 19 for passing the shaft 4 of the variable resistor through, and a magnification display 6'f! : A window 20 for seeing through, windows 21...21 for viewing the numbers on the movable scale plate 14, and a window 22 for rotationally driving the small gear 16 are provided, and an arc-shaped scale 26 is provided. It is represented.

FIG. 2 shows an example of the circuit pattern of the printed circuit board 1.

As shown in FIG. 3, the shape of the sliding brush 10 that comes into contact with this is such that a total of four contacts are provided at a central angle of 100° and contact the inner and outer rings of the pattern, respectively.

FIG. 4 shows a circuit configuration diagram of the timer of the present invention in use. The Ryugo generation circuit 25 is an integrated circuit including a pulse generation circuit and a counter, and the period of the pulse changes continuously by adjusting the variable resistor 6.
, 2, 4) to change the range at the time of setting.

Next, the effects of the above embodiment will be explained. When the driver is fully inserted through the window 22 and rotated by the small gear 13, the rotating body 5 rotates, and the sliding brush 1 [J1 cam 11 also rotates accordingly. For example, the maximum scale of 1 hour range is 10.
If you want to set it to 1 minute, l'-1QJM in the transparent window 20,
The small gear rotates until IN appears. Exactly 10J
When MIN appears, the protrusion 9 falls into the groove 8 and the rotational torque suddenly changes, so the rotation is completely stopped at this point. As shown in Fig. 5, the display screen at this time is such that 1-samurai display numbers appear in window 21A only on the 10-equal scale side, and window 21A on the 8-equal scale side.
No numbers appear in 1B. Also, in this state,
The sliding brush 10 is located at the position indicated by the two-dot chain line in FIG. 2, and is adapted to apply a predetermined code signal to the external terminal of the integrated circuit 25. The variable resistor @6 can be rotated and adjusted completely independently of these switching states, and the timer setting time is determined by the indication of a knob (not shown) and the scale 2 of the fixed scale plate 18.
It can be read directly from the matching point of 6.

Also, for example, if you want to set the maximum scale to 3 minutes, window 21 BK r3J, transparent tJ[20K rX 1・J
Rotate the small gear until MIN appears. The display screen at this time is shown in FIG.
Numbers appear only in the window 21A on the 10th division scale side.

The means for externally rotating the rotating body of the present invention may be, for example, by slightly exposing a portion of the rotating body on the side surface of the housing and allowing the rotary body to be rotated υ directly by a fingertip. Further, a friction wheel, a belt, etc. may be used in place of the gear. Further, in order to prevent unnecessary switching, CC may be implemented by providing a CC on the back of the housing at all rotating parts of the rotating body.

In addition, the timer of the present invention omit the rotary body and cam shown in the embodiment, display the switching range and scale display numerals on the movable scale plate, and display the VC sliding brush etc. on the back of the movable scale plate. An electric circuit switching means can be provided so that such a movable scale plate can be operated and displaced directly or indirectly from the outside.

The scale series in the present invention is 5,504 5? Full scale, sexagesimal scale such as 6.60, and other 1
Of course, the same method can be applied to a 20t full scale model. Furthermore, the displacement position of the movable scale plate may be set to 8 positions -tfc or more, and it may be configured to switch between 8 series or more series.

According to the invention, time setting timers with different scale series can be realized by all timers, so a single model can satisfy various specifications, streamlining the production process and distribution. I will make a large contribution of -5.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the internal structure of an embodiment of the present invention. FIG. 2 is a diagram showing an example of the circuit pattern of the printed circuit board 10, and FIG. 8 is a diagram showing the sliding brush 10. FIG. 4 is a circuit configuration diagram of the embodiment of the present invention in use. FIGS. 5 and 6 are diagrams showing an example of the front appearance of the above embodiment. 1... Printed circuit board, 2... Circuit pattern, 6
... Variable resistor, 4... Axis of variable resistor Ig,
5...Rotating body, 6...Range display body, 10
...Sliding brush, 12--Gear, 16--Small gear, 18--Fixed scale plate, 20--See-through window, 22--Operation window, 26--Scale. Patent applicant: Izumi Electric Co., Ltd. Agent: Patent Attorney Nishi 1) New? 1Δ Fig. 5 6

Claims (2)

[Claims] (1) Set time switching circuit and variable resistor A movable scale plate is provided on the IJ side of the main salary, and the movable scale plate is displaceable in the foot direction when operated from the outside, and in front of the movable scale plate, the variable resistor is A fixed scale plate is provided with a plurality of series of scales for reading the rotation angle of the operating reed and a transparent window for displaying the numbers related to each series of the scale. The multi-stage switching timer is configured such that only windows belonging to one series can see through the display contents of the movable scale plate that belong to the one series n1, and the set time switching circuit can be switched. (2) A rotary cam that rotates together with a rotating body that is rotated by an external operation is provided, and the movable scale plate is configured to be displaced in a predetermined direction according to the rotary cam. The multi-stage switching timer described in item 1.