JPH0364975B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electronic timer that can be set by switching between time settings and modes such as hours, minutes, seconds, etc. In particular, the internal timer circuit can also be switched in conjunction with the switching of numbers and characters. Regarding the model electronic timer.

In the case of a conventional electronic timer that switches between time and mode, as shown in FIG. 1, an electronic timer circuit (not shown) is housed in case 1 of the timer body,
A setting switch 3 such as a date switch or a decimal switch is placed in the display/setting hole 2 on the front of the case 1, and a handle 5 of a push button switch is placed in the setting hole 4 on the front side to indicate hours, minutes, minutes, and seconds. Symbols hm and ms are printed on the front side, and a key 6 for mode switching is inserted into the setting hole 4 by selecting and pressing the handles 5, 5, . . . according to the shape of the back side. In addition, as shown in Fig. 2, a dial 6 (displaying limited time numbers and mode symbols, several types are prepared in advance) is attached to the front of the timer case 1, and the handle 5 is also attached to the front of the timer case 1. It was something you had to select and press.

In conventional devices with such a configuration, when handling the timer, the key and dial must be kept at all times, which is troublesome, and the number of types of timers increases, making it expensive. It is something.

The present invention has been made in order to improve the above-mentioned conventional situation.

Embodiments of the present invention will be described below with reference to FIGS. 3 to 7.
This will be explained with reference to the figures.

The cylindrical case 11 is formed by plastic molding of synthetic resin.

The base block 12 is made of synthetic resin, and has a pin terminal 12a penetrated therethrough by simultaneous molding, one end for external connection, and the other end soldered to the base printed board 13. Further, the base block 12 is provided with a protrusion 12b having a screw hole 12a, and the peripheral wall is provided with a protrusion 12c for engagement with the engagement hole 11a of the case 11.

The circuit printed boards 14, 14 are mounted with electronic components 15, . . . that constitute an electronic timer circuit including a crystal oscillation/frequency dividing circuit, a power supply circuit, and the like.

A display LED (light emitting diode) 16 is mounted on a display printed board 17. A printed board pattern 18 corresponding to BCD (binary coded decimal number) is printed on a time limit setting printed board 19, and as shown in FIG.
The printed board pattern 18 is represented by the number wheel 22 that displays 1 on the circumference, and 0000 and 0001, which are represented by binary bits corresponding to the decimal numbers of 0 and 1, are electrically turned on by shorting the patterns. The state is set as 1 in bits. In the embodiment shown in FIG. 3, there is a time limit setting printed board 19 and a number wheel 22.
Four digits are set using four sheets. This number wheel 22 has a shaft hole 23 and internal teeth 24 formed therein. Further, operating protrusions 25 are provided continuously on the circumference.

The conductive brush 45, operating protrusion 27, internal teeth 28, and shaft hole 29 shown in FIG. It is formed similarly to the number wheel 22, and a printed board pattern 30 is similarly printed on the mode setting printed board 31. This printed board pattern 30 is appropriately short-circuited using a conductive brush (not shown) to switch the number of frequency dividing stages of the frequency dividing circuit.

In addition to the above-mentioned hours and minutes, the mode setting is for models of mode cars that can switch operation modes such as power on/delay and power off/delay.
A mode setting printed board may be added, or hours and minutes may not be changed to one type, and only the operating mode may be set.

The time limit setting printed board 19 and the mode setting printed board 31 are respectively inserted into an intermediate printed board 32 and electrically and mechanically connected.

Reference numerals 33 and 34 are shafts that support the number wheel 22 and the mode wheel 26, respectively.

The switch case 35 is made of a flexible synthetic resin material, and has a display hole 36 facing the display LED 16 on the front side, and the codes of the numeral wheel 22 and mode wheel 26 that can be seen through, and the operation projections 25 and 27 can be operated. A display/setting hole 37 for the mode, a setting hole 38 for the mode, and a display hole 39 for the mode are provided.

Side surfaces 35a, 3 of the opposite wall of the switch case 35
5a has shaft holes 40, 41 that support shafts 33, 34.
is provided. On the same side, an elastic arm 42 is formed parallel to the side, meshing with the internal teeth 28 to provide a click action to the mode wheel 26.

A similar elastic arm 43 is also provided on the inner wall 35c of the other side of the numeral wheel 22, and is engaged with the elastic arm 43 as shown in FIG. 5 to provide a click action.

Next, let's talk about assembly.

One end of the circuit printed boards 14, 14 is fixed to the protrusion 12b of the base block 12 by passing the screws 44, 44... through the screw hole 12a, and the other end is fitted into the fitting hole 35d of the side surface 35a of the switch case 35. do. The side surface 35a is elastically deformed by the notch 35e to fit the printed board therein. Further, the display printed board 17 and the intermediate printed board 32 are electrically and mechanically connected to the circuit printed boards 14, 14, respectively.

Number wheel 22 and mode wheel 26 are each printed board 1
9 and 31 are pivotally supported in shaft holes 40 and 41 of the switch case 35 by shafts 33 and 34.

In this way, the switch case 35, the printed circuit board 14, and the base block 12 are made into a block as the main part of the timer, and the main part is inserted into the case 11 from the front face 11b toward the rear end 11c, and the locking protrusion of the base block 12 is inserted into the case 11. Assembly is also easy because the portion 12c is fitted into the locking hole 11a and the parts are attached to each other. Further, the switch case 35 is also housed within the case 11, and each hole in the side surface 35a is covered, so that dust does not enter and the appearance is good.

It is also convenient to use, since it does not require the conventional work of storing and replacing keys and dials.

In this invention, since h/m and m/s are switched using the same mode vehicle, the time limit can be switched at a 60x magnification, making it possible to switch over a wider range than the conventional 10x magnification. In other words, in 4 digits,
A minimum of 99 hours, 99 minutes and 99 seconds can be changed, and a maximum of 00 minutes and 01 seconds can be changed over an extremely wide range with a single touch.

The present invention has the above-described configuration, and a wide range of settings can be changed with a single device, there is no need to manufacture, store, or operate extra members such as keys, and settings can be made in conjunction with each other, making it extremely easy.

It is also easy to assemble, just fit it into the case.
The appearance is good and there is no dust.

[Brief explanation of drawings]

1 and 2 are exploded perspective views showing a conventional example. Figures 3 to 7 show embodiments of the present invention, Figure 3 is an exploded perspective view, Figure 4 is a side view, Figures 5 and 6 are perspective views of essential parts of the number wheel, and Figure 7 is a mode. It is a perspective view of a car. 11: case, 11b: front, 11c: rear end,
12: Base block, 14: Circuit printed board,
16: LED for display, 17: Printed board for display,
18: Printed board pattern, 19: Time limit setting printed board, 20: Conductive brush, 22: Number wheel,
26: Mode wheel, 25, 27: Operation projection, 3
1: Mode setting printed board, 33, 34: Axis, 3
5: Switch case, 36: Display hole, 37,3
8: Setting hole.

Claims (1)

[Claims] 1. A cylindrical case, a base block with an external connection pin terminal fitted on the rear end of the case, and a switch case fitted on the inner periphery of the front surface of the case, and the switch case and the base. The main body of the timer is constituted by a printed circuit board on which an electronic timer circuit is mounted, both ends of which are attached to a block; A time limit setting printed board that is selectively short-circuited between a number wheel displayed on the circumference and having a plurality of conductive brushes on its side, and a plurality of printed board patterns corresponding to time limits with the conductive brushes by rotation of the number wheel. a mode wheel that displays the mode such as hours, minutes, seconds, etc. of the electronic timer circuit on the circumference and has a plurality of conductive brushes on its side; Each printed board consisting of a mode setting printed board in which mode patterns are selectively short-circuited is conductively connected to the circuit printed board, and a light emitting diode for display is connected to the display hole of the switch case, and a display hole is connected to the time limit setting printed board. The number wheel and the same mode setting wheel are rotatably supported on separate shafts supported on opposite walls of the switch case, and the number and mode of each car are made to correspond to the setting hole of the switch case. An interlocking setting type electronic timer characterized by facing operating protrusions that protrude in the circumferential direction.