JPS58115246A - Timer for use in oil stove - Google Patents

Abstract

PURPOSE:To make it possible to control the automatic ignition of a timer for the stove and the automatic ignition of the stove by the rotation of a single operating shaft by providing a motor mechanism for carrying out the speed changeover, a timer cam, and an ignition cam at an operating shaft whose speed is changed over at a predetermined rotational angle position. CONSTITUTION:In a case where a timer is set to 12hr, for example, a operating shaft 14 is rotated in the counterclockwise direction. Then, a timer set disc 38 and a set cam 40 rotate, and a changeover gear 36 is meshed with a low speed wheel 30. A timer switch 50 is turned OFF and an ignition switch 58 and a main switch 60 are turned ON, by cams 44, 46 and 62 through levers 48, 56 and 64. By turning ON of both switches 58 and 60, the low speed wheel 30 is driven by a motor, and the operating shaft begins to carry out a low speed timer rotation. Thereafter, when a set time is passed, the disc 38 matches with the cam 40, and the operating shaft 14 moves in the right hand direction by a force exerted by a spring 42, and the holding of the time control lever 48 is released. Therefore, the timer switch 50 is turned ON, and the oil stove starts burning.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a timer for kerosene stoves, and more particularly to an improved timer for kerosene stoves that can easily perform automatic timer ignition and normal ignition control of kerosene stoves whose combustion is electrically controlled. It is.

Oil stoves are well known that are equipped with a forced supply/exhaust mechanism, oil volume regulator, etc., and control combustion electrically, and are highly efficient and safe. . I In this type of kerosene stove, preheating is usually performed to ensure reliable ignition, and for this purpose, current is supplied to an electric heater etc. for a predetermined period of time at the start of operation. Therefore, since the preheating operation is not necessary to ignite the stove, the ignition switch mechanism must be provided with such a timer or other preheating mechanism.

Furthermore, in order to perform automatic ignition when waking up, it is desired to automatically perform the ignition action after a predetermined period of time has elapsed, and various timers for kerosene stoves have been proposed for this purpose.

However, with conventional timers for kerosene stoves, it is difficult to simultaneously control with high precision the relatively long time required for starting operation and the short time-up time required for preheating. However, there are disadvantages in that a timer switch and a heating switch must be provided separately, or the ignition must be performed manually, making it inconvenient to use, and the timer itself becomes large.

The present invention has been made in view of the above-mentioned conventional problems, and its object is to provide a small-sized timer for kerosene stoves that is easy to operate.

In order to achieve the above object, the present invention provides an operating shaft whose rotation is controlled by a user and whose speed is switched at a predetermined rotational angular position, a motor mechanism that provides low-speed rotation and high-speed rotation to the operating shaft, and a motor mechanism that is fixed to the operating shaft. It includes a timer cam that controls the start of operation of an electrically combustion-controlled kerosene stove based on the initial setting angle of the operating shaft, and an ignition cam that is fixed to the operating shaft and controls the ignition of the kerosene stove. It is characterized by controlling automatic timer ignition and automatic ignition of the stove by rotating the shaft.

Preferred embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows an exploded perspective view of a preferred embodiment of the timer according to the present invention, in which a rotating operating shaft 14 is located between a mechanism receiving plate 10 fixed to the stove body and a lower plate 12. The operating shaft 14 is freely supported, and the user can control the desired stove operation by controlling the rotation of the operating shaft 14. In the embodiment, air blowing, oil amount control, and ignition control are controlled by this operating shaft. This is done by 14 rotations.

An upper plate 16 is fixed to the mechanism receiving plate 10, and the upper plate 16
A motor mechanism is attached to the receiving plate 10, and the operating shaft 14 can be driven at a predetermined low or high speed. The motor mechanism includes a motor 22 such as a synchronous motor built into a motor case 20 and a gear train, and a worm 24 that protrudes from the motor case 20 into the mechanism receiving plate 10 is provided in the middle of the gear train. The motor mechanism includes a reduction gear train 26 that meshes with the worm 24, and the reduction gear train 26 includes a worm wheel 28 that meshes with the worm 24.
The reduction gear train 26 includes a low-speed vehicle 30 used for a timer function, which will be described later, and a high-speed vehicle 32, used for an ignition function, which will be described later.

In order to transmit the low-speed or high-speed driving force of the aforementioned motor mechanism to the operating shaft 14, a switching gear 36 is fixed to the operating shaft 14, and as the operating shaft 14 slides in the axial direction, The switching gear 36 meshes with either the low-speed vehicle 30 or the high-speed vehicle 32, making it possible to switch the speed of the operating shaft 14 to either one.

Furthermore, a timer set disk 38 is fixed to the operation shaft 14 on the side of the mechanism receiving plate 10, and this timer setting disk 38 engages with a set cam 40 provided on the mechanism receiving plate 10. In addition, when the operating shaft 14 is rotated, its axial movement is controlled, that is, in the embodiment,
When the user rotates the operating shaft 14, the shaft 14 moves to the left in FIG. Move to the right. In order to move the operating shaft 14 in the axial direction, an axial spring 42 is provided between the operating shaft 14 and the lower plate 12, thereby moving the shaft 14 in the right direction.

In order to perform the desired timer action and ignition action by the rotation of the operating shaft 14, a timer cam 44 and an ignition cam 46 are engaged with the shaft 14, and as the operating shaft 14 rotates, these cams 44, 46 operate the desired switch. Performs opening and closing action.

That is, the timer control lever 48 is engaged with the timer cam 44, and the timer switch 50 fixed to the upper plate 16 is controlled on and off by the timer control lever 48, thereby starting the operation of the stove. 14
is controlled according to the initial setting amount. In the embodiment, this timer control lever 48 also controls the fuel supply valve of the stove and requires a relatively large operating force, so the friction loss between the timer cam 44 and the timer control lever 48 due to this operating force is reduced. timer control lever 48 to
The set state of is held by the holding lever 52, and the holding of the timer control lever 48 is released when time-up occurs. In the embodiment, the holding lever 52 is operated by moving the timer cam 44 in the axial direction.
2 is biased in one direction by a set lever spring 54.

On the other hand, the ignition cam 46 controls on/off an ignition switch 58 fixed to the top plate 16 via a first switch lever 56, thereby controlling the ignition for a predetermined period of time when the stove starts operating.

In the embodiment, an operating shaft 1. is further provided to perform on/off control of a main switch of the timer, a main switch 60 fixed to the upper plate 16 in the figure overlapping the ignition switch 58.・The main control cam 62 is engaged with the second switch ray? -64, the main switch 60 is controlled.

The timer of this embodiment has the above-mentioned configuration, and the electrical control circuit of the kerosene stove using the timer will be further explained based on FIG. 2.

In FIG. 2, the power is turned on and off by a main switch 60, and is further connected to the motor 22 through an ignition switch 58.
Current is supplied to the timer run Zorro 6. Current is supplied to a blower motor 68, an oil amount control solenoid 70, and an operating land 72 for operating the kerosene stove via the main switch 60 and the timer switch 50.

Further, a step-down current is supplied from a transformer 76 to an ignition heater 74 that performs ignition at the start of operation of the kerosene stove, and the current to the transformer 76 is supplied via both an ignition switch 58 and a timer switch 50. has been done. Therefore, by controlling each switch 60, 58, 50 by the timer of this embodiment described above, it is possible to reliably omit the desired automatic timer ignition and ignition action.

FIG. 3 shows the timer scale plate in this embodiment.
It is possible to set the timer for 2 hours, and the operation axis 14 can be set to the third
By rotating counterclockwise in the figure to select the desired time, ignition and operation are performed at the predetermined time-up, and from the "off" position, move the operating shaft clockwise in the figure 3 to the "ignition" position. The desired ignition effect can be achieved by manual rotation.

In the present invention, in the case of the automatic timer ignition, the operating shaft 14 rotates at a low speed from the set timer time until the ignition, so that the long timer time, for example, 12 hours, can be kept within one rotation of the shaft, and the ignition During the period when ignition is completed and normal operation is started, the operating shaft 14 can be rotated at high speed to ensure a highly accurate ignition time. For example, in Fig. 3, the time from "ignition" to "operation" is about 6 minutes. High-speed cam rotation can be performed in a short period of time, eliminating wasted ignition heater time.

FIG. 4 shows a low speed and high speed switching gear train of the motor mechanism, the worm 24 meshes with a worm wheel 28, the worm wheel 28 meshes with a high speed gear 78, and the rotation of the high speed gear 78 is caused by the rotation of the high speed gear 78. 32. A slip spring 80 is provided between the high-speed gear 78 and the high-speed gear 32, and both slip and rotate when the operating shaft 14 is set to rotate by the user. And worm car 2
8 meshes with a low-speed gear 82 via a reduction gear train, and the low-speed gear 82 rotates integrally with the low-speed gear 30 via a slip spring 84 so that it can slip. As is clear from FIG. 4, each low-speed vehicle 30 and high-speed vehicle 32
A switching gear 36 selectively meshes with the 36 as shown by the chain line.

FIG. 5 shows a combination structure of the operating shaft 14 and each cam in the present invention, and the figure shows the automatic timer operating state, and the switching gear 36 fixed to the operating shaft 14 is connected to the low-speed vehicle 30.
The operating shaft 14 itself rotates at a low speed. As described above, the main control cam 62 is loosely engaged with the operating shaft 14, and the timer set disc 38 is fixed to the right end of the main control cam 62.
The protrusion 62a of the main control cam 62 engages with the main control cam 62, allowing the main control cam 62 to rotate together with the operating shaft 14 with a slight margin, and when the second switch lever 64 falls onto the main control cam 62. The linked operation has been achieved. The timer set disk 38 is cam-coupled with the set cam 40, and when the operating shaft 14 is rotated as shown in the figure, the timer set disk 38 rides up on the cam of the set cam 40, and the operating shaft 14 is rotated. The axis is moved to the left by pressing the axis spring 42.

Through this shaft movement, meshing between the switching gear 36 and the low speed wheel 30 is achieved.

The ignition cam 46 and the timer cam 44 are further engaged with the operating shaft 14 as described above, and in the embodiment, the timer cam 44 is pivotally supported by the D hole with a slight margin to the operating shaft 14, and the relief groove By engaging the protrusion 46a of the ignition cam 46 with the ignition cam 44a, the ignition cam 46, which is loosely engaged with the operating shaft 14, is also pivotally supported relative to the operating shaft 14 with a slight margin. Therefore, both cams 44 and 46 also have corresponding timer control levers 48 and first switch levers 56, respectively.
It can be used for quick action when falling.

The bottom surface 44b of the timer cam 44 is in contact with the pressing end 52a of the holding lever 52, and the holding lever 52 is always urged counterclockwise in FIG. Following the movement, the holding lever 52 can swing. The lock end 521) of the holding lever 52 is connected to the timer control lever 48.
The timer cam 44 pushes up the timer control lever 48, and the protrusion 44 of the timer cam 44 engages with the locking piece 48a of the timer cam 44.
OK, when the lever 48 is pushed up, the locking piece 48a of the lever 48 is held tightly against the lock end 52b of the holding lever 52, and from then on, the timer control lever 48 no longer comes into direct contact with the timer cam 44, and the oil supply valve etc. This prevents large loads during control from resulting in friction loss.

The embodiment of the present invention does not have the above configuration, and the sixth to first embodiments are as follows.
The operation will be explained in detail based on FIG.

FIG. 6 shows the operation stopped (off) state, and the timer set disk 38 is aligned with the set cam 40 and has fallen into the cam groove, so the operating shaft 14 is biased to the right by the shaft spring 42. As a result, the holding lever 52 releases the timer control lever 48 from holding it. Each timer control lever 48, first switch lever 56, and second switch lever 64 fall into respective cam grooves of the timer cam 44, ignition cam 46, and main control cam 62, and as a result,
The timer switch 50 is on, the ignition switch 58 is off, and the main switch 60 is also off, and as is clear from FIG. 2, the electric circuit of the kerosene heater is in a dormant state.

Next, FIG. 7 shows a state in which a 12-hour timer is set by rotating the operating shaft 14 in the counterclockwise direction of FIG.
At this time, the operating shaft 14 is moved to the left by the timer set disk 38 and the set cam 40, whereby the switching gear 36 meshes with the low speed wheel 30. By rotation of the operating shaft 14, each lever 48, 56, 64 is moved by the cam 4.
4.46.62, the timer switch 50 is turned off, and the ignition switch 58 and main switch 60 are turned on. At this time, since the timer control lever 48 is held by the holding lever 52, the timer control lever 48 and the timer cam 44 do not come into contact with each other from then on, and the load becomes a friction loss even though the oil supply valve is controlled. Never.

In this state, the motor 22 starts rotating when the switches 58 and 60 are turned on, and the low-speed vehicle 30 drives the operating shaft 1-
4 also starts the low speed timer rotation. At this time, the timer lamp 66 is also lit, but since the timer switch 50 is in the OFF state, the operation of the sp) remains in a halted state.

Figure 8 shows the operating shaft rotated at low speed and set to the specified position 12.
The state immediately before the elapse of time is shown, and the rain switch levers 56 and 64 both remain on the ignition cam 46 and the main control cam 62, but the timer control lever 48 is already in a state where it can fall into the cam groove of the timer cam 44. It has become. However, immediately before this, the timer control lever 48 is still held by the holding lever 52, so the timer switch 50 is not turned on.

FIG. 9 shows a state in which a predetermined set time, that is, 12 hours has elapsed, and the timer set disk 38 and set cam 40 are
Since these are aligned, the operating shaft 14 is urged rightward by the shaft spring 40, and as a result, the holding lever 52 is pushed by the bottom surface 44b of the timer cam 44, releasing the holding of the timer control lever 48. Therefore, the timer control lever 48
falls into the cam groove of the timer cam 44, and as a result, the timer switch 50 is turned on.

Therefore, the ignition current is supplied to the ignition heater 74 from the transformer 76, and the kerosene stove starts the desired preheating.
At the same time, each blower motor 68, solenoid 70 and operating ramp '724 of the kerosene stove starts the required operating action.

At this time, by moving the operating shaft 14 in the right direction, the switching gear 36 meshes with the high-speed wheel 32, and after this ignition, the operating shaft 14 is rotated at high speed, and the predetermined ignition time is controlled with high precision. .

FIG. 10 shows a state in which the operating shaft 14 is rotated at high speed by the high-speed vehicle 32 and a predetermined period of time, for example, 6 minutes has elapsed since ignition. During this ignition period, the kerosene stove is reliably ignited by the ignition heater 74. When the operating shaft 14 reaches the "run" position six minutes after the ignition is completed, the first switch lever 56 falls into the ignition cam 46, as shown in FIG. Switch 58 is turned off. As a result, the ignition heater 74
After that, the kerosene stove enters a desired electrically controlled operating state in which the air flow and oil amount are controlled. Then, by turning off the ignition switch 58, the current supply to the motor 22 is also cut off, thereby stopping the rotation of the operating shaft 14 and completing the timer operation.

FIG. 11 shows the state in which the kerosene stove is extinguished, by rotating the operating shaft counterclockwise from the "run" position and lowering the second switch lever 64 into the main control cam 62, thereby turning the main switch 60 off. By turning off the kerosene heater, the operation of the kerosene heater can be stopped and the initial state can be restored.

The automatic timer ignition action is performed as described above,
To perform normal ignition, the operating shaft should be moved clockwise from the state shown in Fig. 6 to the "ignition" position shown in Fig. 9. This will set the timer to high-speed rotation for ignition for 6 minutes. After the kerosene stove is properly ignited, the kerosene stove will start operating normally.

Therefore, according to the present invention, by rotating a single operating shaft, automatic timer ignition, ignition action, and operation stop action can all be controlled, and an easy-to-handle and compact timer is provided. becomes possible.

Further, according to the embodiment, since the timer control lever does not act as a load on the motor mechanism while the timer is operating, there is an advantage that high loads such as the oil supply valve can be easily controlled.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is an exploded perspective view showing a preferred embodiment of the kerosene stove timer according to the present invention, Fig. 2 is a kerosene stove control circuit diagram suitable for Fig. 1, and Fig. 3 is a preferred embodiment of the oil stove timer according to the present invention. An explanatory diagram showing the operating scale plate in Fig. 1, Fig. 4 is a sectional view showing the motor mechanism deceleration transmission mechanism in Fig. 1, and Fig. 5 is a sectional view showing the combined structure of the operating shaft and each cam in Fig. 1. Figures 6 to 11 are explanatory views of the operation of a preferred embodiment of the present invention. 14... Operating axis, 22... Motor, 26...
...Reduction gear train, 30...Low speed vehicle, 32...High speed vehicle, 36...Switching gear, 38...Timer set disc, 40...Set cam, 44...Timer cam, 4
6... Ignition cam, 48... Timer control lever, 50... Timer switch, 52... Holding lever, 56... First switch lever, 58... Ignition switch, 60... Main switch, 62
...Main control cam, 64...Second switch lever. Figure 2 Figure 3 Figure 4 n Procedure Jifu Seisho (Voluntary) 1982 2
May 19, 1, Display of the case 1982 Patent Application No. 215608 2, Name of the invention Timer for oil stove 3, Person making the amendment Relationship to the case Patent applicant address 2-27-7 Taito, Taito-ku, Tokyo Issue name
Rhythm Watch Industry Co., Ltd. 4, as per the agent attachment

Claims (2)

[Claims] (1) An operating shaft whose rotation is controlled by the user and whose speed is switched at a predetermined rotation angle position, a motor mechanism that provides low-speed rotation and high-speed rotation to the operating shaft, and a kerosene heater that is fixed to the operating shaft and whose combustion is controlled electrically. A timer cam that controls the start of operation based on the initial setting angle of the operating shaft, and an ignition cam that is fixed to the operating shaft and controls the ignition of the kerosene stove. A timer for an oil stove characterized by controlling ignition and automatic ignition. (2) A timer according to claim +1) for use in a kerosene stove, characterized in that automatic timer ignition control is performed by rotating the operating shaft in one direction, and ignition control is performed by rotating the operating shaft in the other direction. timer.