JPH02264151A - Spiral spring type starting device for internal combustion engine - Google Patents

Abstract

PURPOSE:To perform remote control for starting and to improve startability by a method wherein after an engine is started through operation of a manual opening and closing switch, automatic accumulation of energy of a spiral type force accumulating device is effected for waiting. CONSTITUTION:When, during the starting of hoisting, a spring force accumulating chamber 10 is brought into a state right before completion of hoisting by bringing a drive gear 510 into engagement with a memory gear 520, simultaneously with press of a switch, a control shaft 530 is rotated with the aid of a motor 25, the force accumulating chamber 10 completes hoisting, and the motor 25 continues rotation. By actuating a starting ratchet lever 6 by means of a cam 600, a shaft 12 is brought into a rotatable state, and through discharge of accumulated energy of a spiral spring in the force accumulating chamber 10, an engine is started instantaneously. After elapse of a specified time, the starting ratchet lever 6 is engaged with a ratchet wheel 5 through a cam 600, accumulation of a force in the force accumulating chamber 10 is started with the aid of the motor 25, and a force is accumulated until a time right before completion of hoisting. This constitution performs remote control for starting and improves startability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a spiral spring type starting device for an engine that replaces an automatic starting device such as a cell star.

[Conventional technology]

As a labor-saving starting device to replace the reel type starting device for small engines, the present applicant has filed a starting device using a spiral spring as an energy storage device in Japanese Patent Application No. 10860/1986 and Japanese Patent Application No. 294600/1983. did.

In addition, a starter device having a manual crank that is removably engaged with the rotational drive shaft of a spiral spring was filed as Utility Model Application No. 6387945.

The outline of the invention of Japanese Patent Application No. 63-294600 will be explained with reference to FIGS. 6 to 14.

6 to 11 are explanatory diagrams of the main structural parts, FIG. 12 is a control circuit diagram, and FIGS. 13 to 14 are operational diagrams.

In Figures 6 to 12, 1 is the engine body, 2 is the crankshaft, 3 is the magnet wheel (or rotating magnetic pole) assembly, 4 is the starter ratchet wheel, 5 is the starting ratchet wheel, 6 is the starting ratchet, and 7 is the shaft. ,
9 is a ball bearing, 10 is a spring force storage chamber, 10-1 is a ratchet tooth of the spring force storage chamber 10, 10-2 is an external gear of the spring force storage chamber 10, 11 is a force storage spring, 12 is a starter shaft, 13 is a bearing (
sliding or ball), addition bearing (slip or ball), 14-1
is the ratchet pawl, 14-3 is the shaft, 14-4 is the spring, 14
-5 is the shaft, 14-6 is the shaft, 5 is the DO motor, frame A, 27 is frame B, 28 is the spacer, 291 is the machine, (9) is the generator, 40 is the high reduction ratio reducer , 4
0-1 is a sun gear, 40-2 is a planetary gear, 40-3 is a movable internal gear, 40-4 is a fixed internal gear, 40-5 is a planetary gear fixed frame A, 40-6 is a planetary gear fixed frame B, 4゜7 is the planetary gear shaft, 40-8 is the fixing pin, 40-
9 is the internal gear of the movable internal gear, 40-10 is the external tooth of the movable internal gear, 40-11 is the internal tooth of the fixed internal gear, 9 is the spark plug, (A) is the ignition control device, 70 is the engine A stop switch, 80 a switch, a storage battery, 100 a motor control device, 120 a charging circuit, 130 a switch circuit, 140 a control circuit, 121 and 123 diodes,
122°136 is a capacitor, 131.133.127
are transistors, and 134, 135, and 137 are resistors.

In FIG. 6, a power storage spring drive motor 5 is attached to the frame A26, and its output shaft is fixed at the center of the sun gear 40-1 of the high reduction ratio reducer 40. Fixed internal gear 40-4 of reduction ratio reducer 40 is frame B
It is fixed at 27.

A shaft 12 is provided on the axis of the crankshaft 2 of the engine 1, and one end is supported by a bearing 9 provided on the side wall of the frame A26, and the other end is supported by a bearing 13 provided on the side wall of the spring force storage chamber 10. The spring force storage chamber 10 is supported via a bearing.

The pawl 35 of the starter ratchet wheel 4 engages with a pawl 3-4 provided on the end face of the magnet wheel assembly 3 provided at the end of the crankshaft 2 of the engine 1 so as to be rotatable in one direction.

As shown in FIG. 7, the outer periphery of the starting ratchet wheel 5 is provided with a large number of protrusions, which are engaged with the starting ratchet 6 so that the rotation can be stopped at any position.

The starting ratchet 6 is fixed to the frame A26 and is rotatably supported by a shaft 7, and is constantly subjected to a force of contact with the outer edge of the ratchet wheel 5 by a spring 6-1, so that the ratchet lever 6 is forcibly operated by an external force. This prevents the ratchet wheel 5 from rotating at any other time.

When the ratchet lever 6 is displaced by an external force and is in a state where the ratchet wheel 5 is unlocked,
Detection is made by a switch lever having a contact 80a.

The spring force storage chamber 10 is movable with respect to the shaft 12 by a bearing 13, and is rotatable with respect to the frame B27 by bearing force. On the other hand, a gear 10-2 is provided on the outer periphery of the storage spring chamber 10.
is provided and meshes with external teeth 4010 provided on the outer periphery of the movable internal gear 40-3 of the high reduction ratio reducer 40 to constitute a reduction gear system.

A power storage spring 11 is provided inside the spring power storage chamber 10 so as to wrap around the shaft 12, and both ends of the power storage spring 11 are fixed as shown in FIG. 1O.

In addition, the force storage spring chamber 10 has internal or external ratchet teeth 1.
0-1 is provided, and a ratchet pawl 14-1 provided on the frame B27 serves as a rotation stopping mechanism that can rotate in one direction.

There is a starting ratchet wheel 5 on the frame A26 side of the shaft 12.
is fixed, and the starter ratchet wheel 5 is integrally provided with a starter ratchet wheel 4 having a pawl 35, as shown in FIG.

The rotational torque of the motor 5 is transmitted through a high reduction ratio reducer 40,
The spring force storage chamber 10 is rotated.

On the other hand, the shaft 12 has a ratchet 6 and a ratchet wheel 5.
Since the rotation of the force storage spring 11 is prevented by the shaft 12
get caught up in When the predetermined winding is performed, the rotation of the motor 50 is stopped, but the winding state (power storage state) is maintained by the ratchet wheel 10-1 and the ratchet pawl 14-1.

When force is applied to the starter ratchet 6 from this state to allow the ratchet wheel 5 to rotate freely, the energy stored in the spiral spring 11 instantly rotates the shaft 12, and the starter ratchet wheel 4 is rotated via the magnet wheel 3. to rotate the crankshaft 2 and start the engine 1.

When the engine starts, the claws 3-4 of the magnet wheel 3
The pawl mark of starter ratchet 4 has become loose, and shaft 1
It is separated from the second drive system.

The above is the basic mechanical operation.

FIG. 12 shows the power supply and control circuit of the motor section.

70 is a permanent magnet rotating generator consisting of a magnet wheel (or rotating magnetic pole) assembly 3 and a coil 4, ω is an ignition control device, a blade is a suction plug, 70 is an engine stop switch, and 3 is a starting ratchet 6. 80a is a contact point of a switch for detecting operation, 90 is a storage battery, and 100 is a control device for driving the motor 5. 29-1 is generator I
The primary coil of stator coil 4, 29-2, is also a secondary coil, and the primary and secondary coils constitute a single-turn transformer, and the common line is grounded to the engine body.

The generating engine, the spark control device (a), the spark plug connection, the switch 70, and other components are conventional techniques and will not be described further.

The motor control device 100 will be explained.

The control device 100 includes a charging circuit 120 and a switch circuit 130.
, a control circuit 140, and a contact 80 of a switch 80.
A is used as an input signal to drive the motor 5.

The charging circuit 120 performs a charging operation using electric power from a generator I that is directly connected to the engine 1 and operates. Rectifier diode) 12
1. Smoothing capacitor 122, backflow prevention diode 123
, a storage battery 90.

In the initial state, the switch circuit 130 is connected to the transistor 13.
1 is off, the control circuit 140 is not energized and the motor 5 is stopped.

Next, when the ratchet lever 6 is pressed, the spiral spring 11 is activated, and at the same time the engine 1 is started, the ratchet lever 6 presses the switch, and its contact point 80a is grounded.

Contact 80a is connected to PNP via reverse current prevention diode 139.
Since the transistor 131 is connected to the base of the transistor 131, the base voltage of the transistor 131 is lower than that of the transistor 13.
1 is ONL, and the control circuit 140 is energized. As a result, a resistor 134 is connected to the base of the NPN transistor 133.
, 135, a voltage divided above the ON voltage is applied, and the transistor 133 is turned on.The base voltage of the transistor 131 is lowered through the resistor 132 to maintain the ON state of the transistor 131, so that the ratchet is activated. Even if the lever 6 is returned to its original position and the contact 80a is opened, the control circuit 140 remains energized.

The control circuit 140 includes a motor 5 for winding up the energy storage spring 11.
There are two types of energization: a timer method and a motor current detection method, and either one is fine.

The energization of the motor 5 is started after a certain period of time has elapsed since the start of energization of the control circuit 140, that is, after the elapse of the engine starting time T1.
When the timer T2 is turned on or the return signal of the contact of the ratchet lever 6, that is, the contact 80a of the switch 80 is opened, the signal (a) which was low through the diode 138 becomes high through the pull-up resistor 144. Use the rising signal. That is, the timer T□, which operates at the same time as the control circuit 140 is turned on, causes the contact 8 to
The timer T2 is activated by the open signal of 0a, that is, the L)H signal of signal (A), and after 72 hours have elapsed, the transistor 127 is turned off.
N L, energize motor 5. A timer circuit inside the control circuit 140 sets the winding time T2 of the energy storage spring 11,
When the winding up time is reached, the transistor 127 is turned off and the stop signal (b) is changed from H to L at the same time. Stop signal (
b) is transmitted to the base of the transistor 133 via the coupling capacitor 136, lowering the base potential of the transistor 133, and turning off the transistor 133.

When transistor 133 turns off, transistor 13
1's base potential rises, turns OFF, and the control circuit 140
is in a power outage state. Therefore, transistor 127 is also turned off.
, and the power supply to the motor 5 is stopped.

The capacitor 141 shown in FIG. 12 is for noise prevention and can be omitted.

In the case of the winding detection method, the motor is started by turning on the transistor 127 in the same way as the timer method described above, and energizing the motor 5 to wind up the mainspring 11. When the mainspring 11 winds up, the motor current increases. Using this method, the motor current detection means outputs a stop signal (b), and the motor section is then stopped in the same manner as the timer method.

An indicator light or a buzzer may be provided in parallel with the motor 5 to appropriately inform the user that the motor 5 is in operation.

The operation timing of the main part of the control operation described above is
As shown in the figure.

Comparing the rise characteristics of the crankshaft rotational speed during startup with the cell starter method, which is shown by the dotted line in the figure, the cell starter system has less margin for the minimum rotational speed required for cranking due to the reduced motor capacity, and the spring Due to the instantaneous force effect of the equation, we can see the direction in which it can be converted into lJS form.

The voltage generated in the primary coil during engine operation is as shown in FIG. 14, and has a distorted waveform as shown. At this time, if the battery voltage E is set to be slightly lower than the potential on the (-I→ side of the generated voltage), the energy E□ in the shaded area that is not used for ignition can be used to charge the battery 90.

If a square hole communicating with the outside is provided in the boss portion of the spring force storage chamber 10 in consideration of the circumferential case, manual force storage is also possible.

Next, the reduction gear 40 will be explained.

The reducer 40, as shown in FIG. 11(b) in a cross section of the main part, includes a sun gear 40-1 fixed to the output shaft of the motor 5;
Three planetary gears 40-2 arranged at equal third intervals on the circumference,
A movable internal gear 4O-3 (73 teeth) which inscribed and meshes with the planetary gear 40-2 and has a difference in the number of teeth of 3, and a fixed internal gear 4
A planetary gear fixing frame A 40-5, a planetary gear fixing frame B 40-6, and a planetary gear shaft 40-7 for fixing the relative positions of O-4 (number of teeth Z4) and the three planetary gears.
, a fixed pin 40-8, the planetary gear 40-2 is rotatable around a planetary gear shaft 40-7, and the fixed internal gear 40-4 is fixed to a support frame such as a frame 82'7. It does not rotate.

Now, the number of teeth of the sun gear 40-1 is Zl, the number of teeth of the planetary gear 40-2 is 72, the rotation speed of the sun gear 40-1 is ω, the rotation speed of the movable internal gear 40-3 is Ω, ω. Reduction ratio - If m, then m=Ω...(1)Z
4=23+3...(2) The following relationship is obtained.

Z2.m as 200. z3. If the z4 gear is designed as a shifted gear, the z3. For z4, the number of teeth Z
4 gears can be meshed. This is a high reduction ratio reducer called a mysterious gear, and is a type 3 planetary gear reducer.

When comparing the power supply capacity for engine starting required when using such a high reduction ratio reducer with the conventional cell starter system, for example, taking a single cylinder engine with a displacement of 24 cc, the power capacity for engine starting required is as shown in Table 2 below. It becomes like this.

Table 2 That is, the entire device can be significantly downsized.

The above is the outline of the invention of patent application No. 63-294600,
This brought about the effects described in the next section.

(11) During engine operation, it has a storage battery that uses the + side power of the ignition power generator, which was not used conventionally, as charging energy, so it is possible to store power in the spiral spring multiple times.

Therefore, even when startability deteriorates, such as during winter, the engine can be cranked multiple times using the restoring force of the spiral spring without using any input, so there is no fear that the engine will not be able to start.

(2) By using a wonder gear in the reducer, it is easy to make the entire reduction ratio a high reduction ratio of about 1 to 1.

Therefore, the capacity of the motor used for power storage is approximately 1 (5 fl
lW → 5W), battery capacity (1,200mAH-)
180 mAH), making it extremely lightweight.

(3) Immediately after the engine starts, the motor is controlled to automatically retract the power storage spring, so even if starting fails, waiting time is shortened.

[Problem to be solved by the invention]

The above-mentioned conventional technology has the following problems.

(1) The winding angle of the spiral spring, which is an important quantity that determines the amount of energy stored in the spiral spring, is determined by the motor 5.
This was done using an indirect method using operating time control using a timer or current value detection method.

Therefore, changes in the winding angle due to fluctuations in the power supply voltage cause variations in the energy stored in the spiral spring, leading to variations in starting performance.

(2) Regardless of whether the timer method or the current detection method is used, the motor operation control circuit that is the power source is quite complex, and there is room for simplification.

(3) It is necessary to release the ratchet lever 6 for starting, but when the engine is installed in a working machine, it is desirable to be able to perform remote control and one-touch operation by button operation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a spiral spring type starting device that solves the above problems.

[Failure to solve the problem]

As shown in FIGS. 1 to 4, (1) a one-rotation conversion mechanism consisting of a drive gear 510 that rotates in the same phase as the rotation of the spring storage chamber 10 and a memory gear 520 that meshes with and follows the drive gear 510; 500 will be provided.

(2) A cam 600 is provided that rotates in the same phase as the output rotation angle of the one-rotation conversion mechanism 500 and controls engagement and release of the ratchet lever 6.

(3) An opening/closing contact 700 that rotates in the same phase as the output rotation angle of the one-turn conversion mechanism 500 and opens and closes the power supply of the motor 5, and an opening/closing switch 750 provided in parallel with the opening/closing contact 700.
A motor control circuit is provided.

[For production]

(1) The one-rotation conversion mechanism 500 consists of a drive gear 510 and a driven memory gear 520, and as shown in FIG. 3(a), the teeth 521 of the memory gear 520 and the teeth 51 of the drive gear 510
1 is engaged, the memory gear 520 is rotated by the rotational force of the drive gear 510. However, when the gear is disengaged, as shown in FIG. The circumferential portion 512 of the memory gear 5 is in contact with the memory gear 5.
20 rotation is prevented.

Therefore, if the number of teeth and rotation angle of drive gear 510 and memory gear 520 are Zd, θa, Zm, and θm, respectively, then 9m
The relationship Zd θcl−Zm holds true.

Here, θm = 360° (1 rotation), θd = 90Cf
' (2.5 rotations), then the number of teeth Zd, Zm which satisfies 0m10a = Consideration 5 is given by Zd = 2, Zm = 5, and the motion axis and drive gear are respectively the control axis and memory gear. When synchronized, a specific rotation angle of the motion axis is output as one revolution of the control axis.

In the case of the present invention, the motion axis is the rotation axis of the spring force storage chamber 10, that is, the shaft 12, the control axis is the rotation axis of the memory gear 520, and the spring force storage chamber 10 and the drive gear rotate in the same phase. cam 6
00 and the opening/closing contact 700 rotate in the same phase as the memory gear, so that the cam 60
0. and the opening/closing contact 700 rotates once. This spring storage chamber 1
If the angular displacement of the spiral spring 11 with respect to the shaft 12 is made to match the specific rotational angular displacement and the winding of the spring 110 is set as the completion time, the process of the spiral spring 11 being wound up by a predetermined angle with respect to the shaft 2 is defined as one rotation of the control shaft 530, that is, It can be set as one cycle.

(2) According to the above item (1), from the start of winding the spiral spring 110 of the spring force storage chamber 10, one cycle of the winding can be converted into one rotation of the control shaft 530, so one rotation of the control shaft During rotation, (a) the release and engagement timing of the starting ratchet lever 6 is controlled by the cam 600, (b) the start and stop of the motor is controlled by the switch 750 and the opening/closing contact 700, and the power storage spring is automatically wound up and started. can be done automatically.

First, the operation of the motor 6 is stopped as follows.

In FIG. 4, the opening/closing contact 700 is composed of an annular conductor 710 having a slit-shaped insulator 711 on the outer periphery, which is fixed to the control shaft 530 in the same phase as the memory gear 520, and a conductor plate 720. 5. The annular conductor 710 is connected in series with the DC power source 800 and is grounded to the body via the control shaft 530.

On the other hand, the opening/closing contact 700 is connected in parallel to the ground by a switch 750, and the negative electrode of the power source 800 of the motor 5 is grounded to the body.

In the initial state, the opening/closing contact 700 and the conductor plate 720 are the insulator 7
11, and the opening/closing contact 700 is in an open state.

In this state, the motor 5 is in an open circuit connection with the power source 800, so it is in a stopped state.

If the switch 750 is pressed here, the motor 5 and the power source 800 become a closed circuit, so the motor 5 starts rotating.

When the motor 5 rotates, as shown in FIG.
, the drive gear 510 rotates in synchronization with the spring force storage chamber 10.

At the start of winding, the teeth of the driving gear 510 and the memory gear 520 are in mesh, and if the spring force storage chamber 10 is selected just before winding is completed, the control shaft 530 starts rotating at the same time as the switch 750 is pressed. After winding is completed and the opening/closing contact 700 is turned on by a certain angle, the opening/closing contact 700 becomes conductive, so even if the switch 750 is released, the motor 5 continues to operate until the insulator 711 is reached.

When the start ratchet lever 6 is actuated by the cam 600 immediately after the opening/closing contact 700 becomes conductive and winding is completed, the shaft 12 becomes free to rotate, so the strain energy accumulated in the spiral spring 11 is released, and the start ratchet lever 6 is activated. Drive wheel 4 and start the engine.

Engine starting is completed instantaneously, and after a certain period of time the cam 6
00 engages the starting ratchet lever 6 with the starting ratchet wheel 5, stops the rotation of the starting ratchet wheel 5, starts accumulating force in the spiral spring 11 by the motor 5, and closes the opening/closing contact 700 just before winding is completed. continues until it runs out.

The above operation timing is schematically shown in FIG.

FIG. 4 shows the opening/closing switch 750, motor 5, memory gear 520, starting ratchet lever 6, opening/closing contact 700, and starter ratchet wheel 4 when the number of windings is 2.5 and the rotation angle of the driving gear 510 is used as a reference. This diagram schematically shows each operation.

In the figure, arrows indicate the direction of movement.

〔Example〕

Embodiments of the present invention are shown in FIGS. 1 to 4. FIG. 1 is a sectional view of the main parts of the present invention, FIG. 2 is a perspective view of the mechanical part of the present invention, and FIG. 3 is a one-rotation view. An explanatory diagram of the conversion mechanism, FIG. 4 shows a motor control circuit.

In FIGS. 1 to 4, parts having the same functions as those of the conventional system are designated by the same reference numerals, and explanations thereof will be omitted.

Since the specific configuration and operation contents have already been explained in the section on operation, only supplementary information will be described.

The names for each numbering in FIGS. 1 to 4 are as follows.

500 is a one-rotation conversion mechanism, 510 is a drive gear, 511 is a tooth, 512 is a disc portion, 520 is a memory gear, 521 is a tooth,
522 is a circular arc portion, 530 is a control axis, A is both ends of the circular arc portion,
600 is a cam, 700 is an opening/closing contact, 710 is an annular conductor having a slit-shaped insulator on the outer periphery, 711 is an insulator, 72
0 is a plate-shaped conductor, 750 is an on/off switch, and 800 is a DC power supply.

In the embodiment of the present invention, the number of turns of the spiral spring 11 is 2.5.
Although an example is shown in which the number of rotations is 500 times, it is clear from the characteristics of the one-rotation conversion mechanism 500 described below that the invention is not limited to this.

(1) Spring force storage chamber] 0 has teeth 511 on the outer periphery of the disk 512.
A drive gear 510 having two drive gears 510 is attached and rotates in the same phase as the spring energy storage chamber 10.

On the outside of the driving gear 510, there is a Geneva-shaped memory gear 5 having five teeth 521 that mesh with the teeth 511 of the driving gear 510.
20 is provided, and when the teeth are not in mesh with each other, they are in sliding contact with each other on their respective outlines, and the driven side memory gear 520 does not rotate.

This situation is shown in FIG.

Now, when the two gears are in mesh as shown in Fig. 3 (al), when the drive gear 510 rotates in the direction of the arrow, the memory gear 520 also rotates in the direction of the arrow, but eventually the mesh becomes disengaged and as shown in Fig. 3 (1) l. When in contact, the drive gear 510 rotates, but
The memory gear 520 does not rotate and maintains its current state.

When the drive gear 510 rotates 180 degrees, the next tooth with a different 18Cf phase from the previously engaged tooth becomes the memory gear 52.
It will mesh with the 00th order tooth.

In this way, the memory gear 520 is one of the drive gears 510.
It rotates 72 degrees for 8 Te rotation. That is, the drive gear 510
2.5 rotations, the memory gear 520 rotates once.

(2) The memory gear 520, cam 600, and opening/closing contact 700 are fixed to the control shaft 530 so that the cam 600 and the opening/closing contact 700 rotate in the same phase as the memory gear 520, and the teeth 511 of the drive gear 510 and the memory Specific times within the period in which the teeth 521 of the gear 520 are engaged can be designated on the control shaft 530 as the winding completion time and the time just before the winding completion.

By setting the initial state before the winding completion time, the opening/closing contact 700 and the opening/closing switch 750 open the motor power supply circuit when the cam 600 releases the starting ratchet lever 6 as shown in the operation diagram in FIG. The closing timing can be assigned (see the "Function" section), and when the open/close switch 750 is pressed, the motor rotates to complete the winding, and at that timing, the ratchet lever 6 is released and the engine 1 is started. After that, the winding starts, and the cycle is performed until the winding is completed.

(3) The power source 800 shown in FIG. 4 may be an ignition system power source or a separate power source, and the as circuit is dedicated by providing one more conductor plate 720 to form a slip ring. A line may be provided.

〔Effect of the invention〕

A spiral spring type starting device for an internal combustion engine according to the present invention includes: a shaft and a box body rotatably supported around the shaft; a spiral spring type power storage device comprising a spiral spring whose both ends are fixed to the shaft and the box body; In a spiral spring type starter for an internal combustion engine, which is composed of a ratchet mechanism that controls the rotation and stopping of the shaft, and a power source consisting of a motor and a speed reducer that rotate the box, it is integrated with the box. A conversion mechanism that converts a specific rotation angle of a box body by one rotation using a rotating gear and a gear meshing with the gear, a cam rotatably provided on the output shaft of the conversion mechanism integrally therewith, and a rotary opening/closing mechanism. It is equipped with a contact point and a manual open/close switch, and by operating the open/close switch, after starting the engine, the AiJ power storage device automatically stores energy and goes on standby, resulting in the following effects: has.

(1) The one-turn conversion mechanism simplifies the electrical control circuit for stopping the motor, which is the power source for the spring storage chamber, and allows the motor to also be used to operate the starting ratchet lever. However, remote control of starting is possible.

(2) In order to misappropriate the completion of winding of the spiral spring by the number of windings,
A stable spiral spring output is always obtained, improving starting performance.

[Brief explanation of drawings]

Jlil,, □□ Fig. 1 is a cross-sectional view of the main parts according to the embodiment of the present invention, Fig. 2 is a perspective view of the one-rotation conversion mechanism in Fig. 1, and Fig. 3 (al (b) each shows one rotation). An explanatory diagram of the conversion mechanism, Fig. 4(a) is a motor control circuit diagram, Fig. 4(b)
is a sectional view taken along the line A-A in FIG. 4 (al), FIG. 5 is an operation diagram, FIG. BB sectional view in Figure 6, No. 9
The figure is a cross-sectional view taken along the line C-C in Figure 6, and Figure 10 is a cross-sectional view taken along the line D-D in Figure 6.
11(a) and 11(b) are front views and sectional views of the reducer, FIG. 12 is an electrical control circuit diagram of the device shown in FIG. 6, and FIG. 13 is the device shown in FIG. 6. FIG. 14 is an operation timing diagram of the main part of the control operation in FIG. 14, which shows the voltage waveform generated in the primary coil during engine operation. 10... Spring energy storage chamber 11... Energy storage spring 12
... Starter shaft 5001 rotation conversion mechanism (510... drive gear, 520... memory gear) 60
0...Cam 700 Opening/closing contact 750...
・Open/close switch

Claims (1)

[Claims] A spiral spring type force storage device consisting of a shaft and a box rotatably supported around the shaft, and a spiral spring fixed at both ends to the shaft and the box,
In a spiral spring type starter for an internal combustion engine, which is composed of a ratchet mechanism that controls rotation and stopping of the shaft, and a power source consisting of a motor and a speed reducer that rotate the box, a conversion mechanism that converts a specific rotation angle of the box into one rotation using a rotating gear and a gear that meshes with the gear;
The output shaft of the conversion mechanism is provided with a cam and a rotary opening/closing contact rotatably provided integrally with the output shaft, and a manual opening/closing switch, and after the engine is started by operating the manual opening/closing switch. A spiral spring type starting device for an internal combustion engine, characterized in that it is configured to automatically store energy in the power storage device and stand by.