JPS6310819A - Time setting device for timer - Google Patents

Abstract

PURPOSE:To set the adjusting range of a delay time in multi-stage by rocking a range scale plate around a dial together with a cam follower. CONSTITUTION:When a cam gear 45 is turned while attending with the drive of an input gear 46, the range scale plate 62 is rocked and a unit scale plate 63 is turned. When the input gear 46 is turned by a half, a 2nd switch gear 42 is turned by 90 deg. to switch the maximum value of the delay time, the range scale plate 62 is moved at the same time and a numeral displayed on the window hole 61a of the scale plate 61 is a value corresponding to the adjusting range of the delay time. when the cam gear 45 is turned round once and all numerals of the range scale plate 62 appear on the window hole 61a once, a 1st switch gear 41 is turned by 120 deg. and the unit scale plate 63 is also turned by 120 deg.. That is, the unit of the timer circuit is switched and the unit displayed on the window hole 61b is switched in response to its setting unit.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention relates to a timer time setting device that allows a time limit to be set over a wide range.

[Background technology] Conventionally, the dial 5 is rotatable with respect to the housing 10.
2 provides a timer in which the time limit can be set W4W1, and the adjustment range by the dial 52 can be selectively set by operating from the outside of the housing 10. As shown in FIG. 7, this timer has a timer circuit mounted on a board 21 attached to a housing 10, and a unit setting switch SW1 that changes the unit of setting time to minutes or seconds, and a dial 52 to selectively adjust the range of adjustment. A range setting switch SW2 and the like for setting are provided. Unit setting switch S
Wl has a 63° unit dial with win" and see" units written in two rows above and below, which slides up and down in conjunction with each other, and the range setting switch S W 2 corresponds to the g section range of the time limit. A range dial 62'' with numerical values written on it slides up and down in conjunction. The range dial 62' has a plurality of numerical value notation sections, each of which has numerical values written in upper and lower two rows. A scale plate 61° having a scale 61e is arranged on the front surface of these dial plates 62' and 63'.
Window holes 61b and 61c are formed at appropriate locations on the scale plate 61'. The window holes 61b and 61c are for each switch SW, SW
2, the top and bottom 2 of each dial plate 62', 63'
It is formed so that only one of the notations on the steps is visible.

With the above-described configuration, the characters displayed on the scale plate 61' can be set to correspond to the i+ur+ range of the time limit; however, the characters displayed on the dial plate 62'.

Since the characters are changed by sliding the dial 63' up and down, if you try to change the adjustment range of the time limit in multiple stages, it becomes necessary to increase the vertical width of the dial plates 62' and 63', which makes the overall problem worse. The problem arises of increasing the size.

[Object of the Invention] The present invention has been made in view of the above-mentioned points, and its object is to change the adjustment range of the time limit by swinging the dial in conjunction with the operation of the switch. To provide a time setting device for a timer that can be set in multiple stages and that does not increase the size of the timer.

[Disclosure of the Invention] (Example) In the following explanation-2, terms such as front and rear, upper and lower, etc. are used for convenience based on FIG. 1, but these terms do not limit the mounting direction.

As shown in Fig. 1, a rectangular cylindrical case 1 passes through the front and back.
The timer main body 2 is housed inside. A base 11 for closing the rear surface of the case 1 is provided at the rear end of the timer body 2, and a cover 12 for closing the front surface of the case 1 is provided at the front end of the timer body 2. That is, the housing 10 is shaped like a case 1, a base 11, and a cover 12.
t will be done. The base 11 is an ophthalmic base, and has a plurality of connecting pins 13 protruding from its rear surface, and an engaging protrusion 14 protruding from its circumferential surface which is connected to an engaging hole 1 formed on the circumferential surface of the rear end of the case 1.
5 and is fixed inside the rear end of the case 1. The base 11 has a printed wiring board 21 &
are placed closely together. At the four corners of the base 11, pillars 16 in the shape of a cross section protrude forward, and each pair of pillars 16
Printed wiring boards 21b and 21c are held between them, respectively. Engagement claws 22 are protruded from the side edge of the front end of the printed wiring board 21b=21e, and the engagement claws 22 engage with the holding holes 18 of the support pieces 17 extending rearward from the four corners of the cover 12. As a result, the front end portion of each printed wiring board 21b*21e is held between the pair of support pieces 17, respectively.

That is, the base 11 and the cover 12 are connected to the printed wiring board 2.
They are connected via 1b and 21c.

A printed wiring board 21d is disposed on the rear surface of the cover 12. As shown in FIG. 2, the printed wiring board 21cl has notches 25 formed on both left and right edges, and the rear ends of the pair of left and right holding pieces 23 extending behind the cover 12 are connected to the printed wiring board. 21d, and the holding claw 24 formed at the rear end of the holding piece 23 engages with the periphery of the notch 25, thereby holding the printed wiring board apart from the rear surface of the cover 12. 21cl is held by the cover 12. Each printed wiring board 21a arranged adjacently
~21d are electrically connected to each other, and a timer circuit is mounted on these printed wiring boards 21a~21d. A stepped portion 26 that locks the rear surface of the cover 12 is formed on the inner surface of the front end of the case 1 . With the above configuration, the base 11 and the cover 12 are housed in the case 1 in a state where they are integrally connected by the printed wiring boards 21b and 21c, and the engagement protrusion 14 of the base 11 is connected to the case 1. By engaging with the engagement hole 15, the base 11 and cover 12 can be fixed in position with respect to the case 1.

For example, as shown in FIG. 6, the timer circuit has an output frequency of 7I! using a variable resistor VR. An oscillation circuit 31 that can perform 4W1, a frequency divider circuit 32 with a variable frequency division ratio that divides the output of the oscillation circuit 31, and various outputs such as on output and off output based on the output of the frequency divider circuit 32. and an output circuit 33 that outputs a signal. In this configuration, the oscillation circuit 3
By adjusting variable resistor VR 1, the time limit can be adjusted. The frequency dividing circuit 32 includes a unit setting switch SW for selecting the unit of hour, minute, or second.
1 and a range setting switch SW2 for selecting the adjustment range of the time limit, and a mode setting switch SW for selecting whether the output circuit 33 is to be outputted on or off after expiration of the time limit.

It is equipped with Note that this circuit configuration is an example, and is not limited to this, and may include switches SW, ~SW having each of the above functions, and means such as a variable resistor VR that continuously adjusts the time limit. Any configuration may be used as long as the timer circuit is provided.

As shown in FIG. 2, on the front side of the printed wiring board 21d disposed on the rear surface of the cover 12, there is a variable resistor VR1 for varying the oscillation frequency of the oscillation circuit 31, and a contact plate 3 to be described later.
8. ~38. together with switch bases 34, to 341, which constitute three switches SW1 to SW, and a pair of indicator lights 35 made of light emitting diodes to indicate the operating state of the timer.
11352 etc. are arranged. One indicator light 351 indicates whether the output is on output or off output, and the other indicator light 352 indicates whether the time limit has expired or not. Each switch base 34. ~34. are each equipped with a plurality of contacts 37, and each switch base 34. Support holes 361 to 363 are closed in the vicinity of ~34°, respectively. cover 1
2 and the printed wiring board 21d.
As shown in the figure, the variable resistor VR and each switch SW, ~
A plurality of gears for operating SW3 are arranged, and each switch gear 41-4 operates each switch SW, ~SW3.
One end of the shaft of 3 is the support hole 36. ~36. inserted within.

The axis VRa of the variable resistor VR has a connecting protrusion 51 protruding from the rear end of a rotating shaft 51 inserted through the center of the cover 12.
a meshes with each other, and as the rotation shaft 51 rotates, the variable resistor V
0 rotation axis 51 on which the resistance value of R is adjusted
The front end of the cover 12 protrudes forward from the cover 12, and a rearward-opening cylindrical guifur 52 made of transparent synthetic resin is attached to this protrusion so as to rotate together with the rotation shaft 51. That is, a coupling part 51b having a hexagonal cross section is formed at the front end of the rotation shaft 51, and this coupling part 51b connects to a coupling hole 52 formed in the center of the dial 52.
By fitting into a, the rotating shaft 51 and the dial 52 are coupled to rotate together. Here, the connecting portion 51a of the rotating shaft 51 and the connecting hole 52a of the dial 52 are made into a polygonal shape and are fitted together so that they are prevented from rotating. A mounting screw 53 is screwed into the front end surface of the rotating shaft 51 exposed from the coupling hole 52m from the front of the dial 52 to prevent the dial 52 from being pulled out forward. is being done. Further, a blind plate 54 is attached to the center of the dial 52 so as to cover the front surface of the mounting screw 53. A pointer 52b is formed on the dial 52, and the rotation position of the guifur 52 can be indicated. A mounting base 55 that is covered by a dial 52 is protruded from the center of the front surface of the cover 12, and a recess 56 is formed in the front surface of the mounting base 55. Further, the front surface of the cover 12 other than the mounting base 55 is covered with a decorative plate 57.

A circular scale plate 61, a U-shaped range dial plate 62, and a circular unit dial plate 63 are disposed within the recess 56 of the mounting base 55. The scale plate 61 is prevented from rotating within the recess 56, and the range dial plate 62 and unit dial plate 63 are connected to the scale plate 6.
It is stacked behind 1. The range dial 62 is integrally coupled to an annular cam 744 disposed at the rear of the cover 12. That is, four pillars 44m are provided on the periphery of the cam follower 44 to protrude toward the front, and the pillars 44a are inserted into circular through holes 561L drilled in the front surface of the mounting base 56. The range dial 62 is connected to the front end of the pillar 44t. Cam @ $45
A rotating shaft 51 is inserted through the center of the cam tooth $4.
5 is rotatable about a rotation shaft 51. A 7-run 51c is formed at the rear end of the rotating shaft 51, and the 7-run 51c prevents the cam gear 45 from being pulled out. The central axis of the cam protrusion 45a is eccentric from the central axis of the cam gear 45, and when the cam gear 45 rotates around the rotation axis 51, the pillar 44a of the cam follower 44 ascends into the through hole 56a and its movement is restricted. Therefore, the cam follower 44 rotates around the rotation axis 51, and each pillar 44a moves in a circular arc along a trajectory along the periphery of the through hole 56a. Here, the diameter of the through hole 56a is the diameter of the cam gear 45.
The distance between the center of the cam projection 45a and the center of the cam projection 45a is
When the diameter of a is d, it is set to be (2X1'+d). Cam gear 45 is on cam 7 oro 744
A cylindrical cam protrusion 45& provided on the front surface of the cylindrical cam protrusion 45& is inserted therethrough.

Since the range dial plate 62 is integrally connected to the cam 7 roller 744 as described above, it swings as the cam follower 44 moves.

The cam gear 45 has partial teeth 1L45b at the front and rear intermediate portions, and teeth IiL portions 45c around the entire circumference of the rear end. The partial gear 456 of the cam gear 45 can mesh with the gear portion 41a of the first switch gear 41. The first switch gear 41 has shaft pins 41b and 41 from both front and rear end surfaces, respectively.
c is provided in a protruding manner, and both shaft bins 41b and 41c are arranged coaxially. The first switch gear 41 has a pongee pin 41b at the front end inserted into a through hole 56b drilled in the front face of the mounting base 55 of the cover 12, and an import pin 41c at the rear end inserted into the printed wiring board 21d. By being inserted into the support hole 361, it is held between the cover 12 and the printed wiring board 21cl. The first switch gear 41 is a gear portion 41a
The number of teeth is set so that when the cam gear 45 meshes with the partial teeth $45b of the cam gear 45, the cam gear 45 rotates one-third of the way. That is, when the cam tooth $45 rotates once, the first switch gear 41 rotates one-third of the way. A contact plate 38 having an appropriate conductive pattern on the rear surface of the first switch wheel 41.
A unit setting switch SW is formed by the contact plate 38+ and the contactor 37 provided on the first switch base 34°. That is, the contact plate 38. By appropriately forming a conductive pattern, the first switch gear 41
Every minute of a rotation, the division ratio of the frequency dividing circuit 32 is switched, and the time limit setting unit can be selected from hours, minutes, and seconds.

Here, the contact plate 381 is formed using a printed wiring board. Furthermore, positioning recesses 41 are provided at four locations at 90 degrees apart in the circumferential direction on the rear end-periphery surface of the first switch tooth 11L41.
d is formed. The shaft pin 41b on the forward side of the first switch gear 41 projects into the recess 56, and a unit dial plate 63 is attached to this projecting portion. The front end of the shaft pin 41b is formed into a non-circular shape, and is coupled so that the unit dial 63 also rotates as the first switch gear 41 rotates.

The second switch gear 4 is attached to the gear portion 45c of the cam gear 45.
The two gear parts 42a mesh with each other. Second switch gear 42
A pongee bottle (not shown) is installed on the rear surface of the cover 12.
is inserted, and the rear end of the pongee bottle is connected to the printed wiring board 21.
It is inserted into the support hole 36□ formed at d. Also, the second
The gear part 46a of the input gear 46 meshes with the gear part 42a of the switch gear 42. The input gear 46 is a shaft pin 46 inserted into a mounting hole 55a drilled in the front surface of the cover 12.
b at the rear end, and an operating section 46c inserted into the insertion hole 57a formed in the decorative plate 57 at the front end. Therefore, the gear portion 42a is connected to the cover 12.
and the decorative plate 57, and the operation section 4
The front end of 6e is exposed from the decorative plate 57. A slit 46d into which a jig such as a flathead screwdriver can be inserted is formed in this exposed portion. 2nd switch tooth $42
A contact plate 38□ has a conductive pattern formed on its rear surface.
A range setting switch SW2 is formed by this connecting plate 382 and a switch base 34□ of $2. The range setting switch S W 2 is formed with a conductive pattern so that the contacts are switched every time the second switch gear 42 rotates one-fourth of a turn. Further, positioning recesses 42b are formed on the peripheral surface of the rear end portion of the second switch gear 42 at appropriate intervals in the circumferential direction. With the above configuration,
If the input gear 46 is rotated, the second switch gear 42
As the cam gear 45 rotates, the range dial 62 swings. Here, the ratio of the number of teeth between the input gear 46 and the cam gear 45 is set such that when the input gear 46 makes a half turn, the cam gear 45 makes a quarter turn.

As shown in FIG. 5, the range dial plate 62 is provided with numerical value notation parts 62a to 62f at a plurality of locations, and a plurality of numbers are written in each of the numerical value notation parts 62a to 62f. That is, in each of the numerical display parts 628 to 62f, a square is divided into two vertically and horizontally into four sections in the shape r&, and a number is written in each section, and the center of each section is the through hole 56a.
is located on a circular arc with a radius equal to the radius of . Further, in each numerical value notation section 62a to 62f, numbers are arranged clockwise with the number in the upper left section as a reference so that the numerical value increases. For example, in the second numerical value notation section 62b, the four numerical values [0, 2, 1, 2, 201] are written in each section, 0°2'' in the upper left section and '' in the upper right section. 1", "2" in the lower right compartment, 20" in the lower left compartment
numerical values are indicated for each. Further, the numerical values in the corresponding sections of the numerical value notation parts 62a to 62f are arranged so as to increase clockwise. For example, if the numerical values at the top left of each numerical notation section 62a to 62f are arranged in order, [
0,0,2°0.4,0,6,0,8,1]. On the unit dial 63, the units "hour", "win", and "see" indicating hours, minutes, and seconds are written at equal intervals in the circumferential direction, and the units are set so that they become larger clockwise. There is. Here, the type, number, position, etc. of characters written on each dial plate 62, 63 are not limited to those described above (although they may be changed as necessary, Window holes 61a are formed at positions corresponding to each of the numerical display portions 62a to 62f on the range dial plate 62, and window holes 61b are formed at positions corresponding to each unit written on the unit dial plate 63. These window holes 61
a, 61b are each in the form I! so that only a numerical value in any one section of each numerical value notation section 62a to 62f or only one arbitrary unit faces. It has been done. window hole 61
A is formed corresponding to a scale 61c formed on the circumference of the scale plate 61. Here, the scale plate 61 may be made of an aluminum plate or the like with the window holes 61g and 61b punched out, but if it is formed of a transparent material, the window holes 61a can be formed by masking unnecessary parts by printing.

61b, and in this case, the window holes 61a, 61b can be easily formed, which has the advantage of improving the efficiency of the production work.

With the above configuration, when the cam gear 45 rotates as the input gear 46 rotates, the range dial 62 swings and the unit dial 63 rotates. here,
When the input gear 46 makes a half turn, the second switch gear 42
The maximum value of the time limit is changed by turning a quarter turn, and at the same time, the range dial 62 moves and the scale plate 6 changes.
1 window hole 61a1. :The displayed numerical value corresponds to the range of section a of the time limit. In this way, when the cam gear 45 rotates once and all the numerical values on the range dial 62 appear once in the window hole 61a, the first switch gear 41
rotates one-third of a turn, and the unit dial 63 also rotates one-third of a turn. That is, the unit of the timer circuit is switched, and the unit exposed through the window hole 61b is also switched corresponding to the set unit.

The mode contact switch SW is located on the third switch base 34.
and contact plate 38. It is formed by Contact plate 38. is provided on the rear surface of the third switch gear 43, and the third switch gear 43 is inserted into a pongee bin ('5!J not shown) extending from the rear surface of the cover 12. The rear end of the pongee bottle has a support hole 36 formed in the printed wiring board 21d. inserted into. On the front surface of the third switch gear 43, characters corresponding to the mode, such as whether it is turned on or turned off when the time limit expires, are written. A part of the front surface of the third switch gear 43 is exposed through a cutout window 12a formed on the side of the mounting base 55, and a window hole 57b is formed in the decorative plate 57 to expose characters corresponding to one mode. ing. A gear portion 43a is formed at the front w85 of the third switch gear 43, and a plurality of positioning recesses 43 are formed at the rear end at appropriate intervals in the circumferential direction.
b is formed. An input gear 47 is provided at the tooth 11 portion 43a.
The gear portions 47a of the two mesh with each other. Input gear 47 is input gear 4
6, a mounting hole 55 formed on the front surface of the cover 12
The operating shaft 4 is equipped with a shaft pin 47b at the rear end, which is inserted into the shaft pin 47a, and which is inserted into a through hole 57a formed in the decorative plate 57.
7c at the front end. Further, a slit 47d is formed in the front end surface of the operating shaft 47c for driving the input gear 47 with a jig such as a flathead screwdriver. Therefore, by rotating the input gear 47, the mode setting switches SW, 1 can be switched, and the letters corresponding to the window holes 57b are exposed in accordance with the set mode.

Each of the switch gears 41 to 4 described above. (It is desirable that the free ends of the click springs 48, one end of which is fixed at a fixed position, be engaged with the positioning recesses 41d, 42b, and 43b formed at the rear ends, respectively. With this configuration, each switch gear 41 - 43 can be clicked, improving operability. Further, a stopper may be provided on the dial 52 as appropriate to restrict the rotation range.

[Effect of the invention 1 As described above, according to the specific invention, there is provided a dial that is rotatably provided on the housing and that adjusts the time limit, and a range setting switch that selectively sets the adjustment range of the time limit using the dial. , a scale plate that is placed between the housing and the dial and has a scale and a window hole formed in the appropriate place, and a time limit adjustment range that is placed between the scale plate and the case and set by the range setting switch. A range dial with multiple numerical values written on it corresponding to the range, a cam gear that has a cam surface eccentric to the center of the dial and rotates in conjunction with the operation of the range setting switch, and a cam surface of the cam gear. A cam follower that slides into contact with the range setting switch and moves the range dial so that one numerical value corresponding to the adjustment range set by the range setting switch faces the window hole, and the range dial is located at the center of the dial together with the cam follower. Because it oscillates against the range, it is possible to write a large number of characters on the range dial compared to when the range dial is slid and the characters are lined up in a straight line. This has the advantage that the time adjustment range can be set in multiple stages. In addition, since the density between the characters written on the range dial can be increased, the space on the range dial can be used effectively, and the range of time limit adjustment can be expanded even though the range dial has a relatively small area. It has the advantage that it can be set in stages and the overall size can be reduced. Conversely, each character can be written larger if they are the same size. Also, according to the merged invention,
A rotatable dial on the housing that adjusts the time limit, a unit setting switch that selectively sets the unit for adjusting the time limit using the dial, and a range that selectively sets the adjustment range of the time limit using the dial. A setting switch, a scale plate arranged between the housing and the dial and provided with a scale and having a plurality of window holes formed at appropriate locations, and a unit set by the unit setting switch arranged between the scale plate and the case. There was a unit dial with multiple units written on it corresponding to the scale, and multiple numbers were written on it corresponding to the adjustment range of the time limit set by the range setting switch, which was interposed between the scale plate and the case. A range dial, a cam gear that has a cam surface eccentric to the center of the dial and rotates in conjunction with the range setting switch, and a cam gear that slides into contact with the cam surface of the cam gear and adjusts to the adjustment range set by the range setting switch. It has a cam follower that moves the range dial so that one corresponding number faces the window hole, and a gear part that can mesh with the gear part of the cam gear, and when the cam gear rotates once, the unit facing the other window hole changes. The range dial is equipped with a gear that rotates the unit dial so that the range dial rotates, and the numbers written on the range dial are written so that the numbers facing the window hole gradually become larger as the cam gear rotates in one direction. The units written on the unit dial are set so that the units facing the window hole gradually become larger as the cam gear rotates in the same direction. The adjustment range and unit of the time limit can be controlled simultaneously by simply setting the time limit, and it has the advantage of being easy to operate.
Furthermore, the adjustment W1 range of the time limit can be changed continuously by simply rotating the cam gear in one direction.
This has the advantage that a stopper or the like is not required and there is no risk of damage to the mechanism due to over-turning or the like.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing one embodiment of the present invention, Fig. 2 is an exploded perspective view of the main parts of the same, Fig. 3 is a sectional view of the main parts of the same, and Fig. 4 is the same with the decorative cover removed. FIG. 5 is a front view showing a microwave dial plate used in the above, FIG. 6 is a block portion of the internal circuit of the same, and FIG. 7 is an exploded perspective view of the conventional example. 10 is a housing, 44 is a cam follower, 45 is a cam gear, 52 is a dial, 61 is a scale plate, 61a, 61b are window holes, 61c is a scale, 62 is a range dial, 63 is a unit dial, SWl is a unit setting switch , SW2 is a range setting switch. Agent Patent Attorney Ishi 1) Chief 7 Figure 1 Figure 3 Figure 4 be5a6j 41b 47 ldo 5th
Figure 6bWl '5W2 SW3 Figure 7

Claims (2)

[Claims] (1) A dial that is rotatably provided with respect to the housing and adjusts the time limit, a range setting switch that selectively sets the adjustment range of the time limit by the dial, and a scale that is placed between the housing and the dial. A scale plate is provided with window holes formed in appropriate places, and a range letter is placed between the scale plate and the case and has multiple numerical values written on it corresponding to the adjustment range of the time limit set by the range setting switch. A plate, a cam gear that has a cam surface eccentric to the center of the dial and rotates in conjunction with the operation of the range setting switch, and a cam gear that slides into contact with the cam surface of the cam gear and adjusts to the adjustment range set by the range setting switch. A timer time setting device comprising a cam follower that moves a range dial so that a corresponding numeric value faces a window hole. (2) A rotatable dial with respect to the housing that adjusts the time limit, a unit setting switch that selectively sets the unit of adjustment of the time limit using the dial, and a unit setting switch that selectively sets the adjustment range of the time limit using the dial. The range setting switch to be set, the scale plate which is placed between the housing and dial and has a scale and multiple window holes formed in the appropriate places, and the unit setting switch which is placed between the scale plate and the case. There is a unit dial plate with multiple units written on it corresponding to the units to be used, and a unit dial plate with multiple numerical values corresponding to the adjustment range of the time limit set with the range setting switch, which is interposed between the scale plate and the case. The indicated range dial, a cam gear that has a cam surface eccentric to the center of the dial and rotates in conjunction with the range setting switch, and a cam gear that slides into contact with the cam surface of the cam gear and is set by the range setting switch. A unit that includes a cam follower that moves the range dial so that one number corresponding to the adjustment range faces the window hole, and a gear part that can mesh with the gear part of the cam gear, and faces the other window hole when the cam gear rotates once. It is equipped with a gear that rotates the unit dial so that the range dial is changed, and the numerical value written on the range dial is such that the numerical value facing the window hole gradually increases as the cam gear rotates in one direction. A time setting device for a timer, characterized in that the units written on the unit dial are set so that the units facing the window hole gradually become larger as the cam gear rotates in the same direction.