JPH09217672A - Starter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a magnet switch from being defectively operated by moving a moving part with a plunger moved, thereby revolving a bar-like part, moving a working part by a specified quantity while it is being brought into contact with a pinion regulating means, rotating the pinion by operating the pinion regulating means so as to regulate it, and thereby moving the pinion to the side of a ring gear. SOLUTION: Upon turning a switch on, a plunger 45 is absorbed to the side of a stationary iron core 44 so as to allow the moving part 40b of a lever 40, and furthermore, its working part 40a to be rotated together, let a rotation regulating member 6 be moved by a specified quantity, and the rotation of a pinion is thereby regulated. With the plunger 45 raised up, an auxiliary movable contact 52 is brought into contact with a starting resistance 51, a starter motor is then driven, an armature 10 is rotated under a low voltage applied state so as to be reduced in speed by an epicyclic reduction mechanism, and its rotating shaft 3 is thereby rotated. Torque is acted as thrust to a pinion 4 which is regulated in rotation, it is to be meshed with a ring gear, and when the pinion 4 is meshed with the ring gear, the rotational regulation of the rotation regulating member 6 is thereby released. After that, rated voltage is applied to the starter motor, so that the armature 10 is thereby started.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a starter for starting an engine.

[0002]

2. Description of the Related Art In a conventional starter, as shown in Australian Published Patent No. 94-80486, a string-like member is arranged between a plunger of a magnet switch and a pinion rotation restricting member, and the movement of the plunger causes the string to move. The pinion rotation restricting member moves to the pinion side via the string-like member, the restricting claw of the pinion rotation restricting member fits into the uneven portion of the pinion, and the armature rotates, so that the output shaft also rotates, Since the pinion engaged with the helical spline formed on the output shaft is restricted in rotation by the pinion rotation restriction member, it moves to the ring gear side, the pinion and ring gear mesh, and the pinion rotates to the end surface on the side opposite to the ring gear side of the pinion. Preventing the restriction member from moving and the pinion from coming off the ring gear,
There is disclosed a starter in which the plunger is returned to its original position and the movable contact is separated from the fixed contact due to the bending of the string-shaped member itself even if the pinion rotation restricting member cannot return from the pinion end face position.

[0003]

However, in the conventional one, even if the pinion cannot be returned to its original position while being caught in the ring gear, the movable contact provided on the plunger separates from the fixed contact, but When the pinion rotation restricting member returns to its original position due to the bending of the string-shaped member itself, the string-shaped member disengages from the pulley that changes the direction of the string-shaped member, and the string-shaped member loses a gap between the pulley and the pulley holding portion. Even if the cord-shaped member is caught on the hook and the starter is to be actuated again, there is a possibility that the plunger cannot move and the starter malfunctions while the cord-shaped member is caught.

Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a starter for preventing malfunction of a magnet switch.

[0005]

[Means for Solving the Problems]

[Means of Claim 1] The starter according to Claim 1 has a structure in which the movement of the plunger operates the pinion restricting means via a lever, and the lever includes a moving part that moves by the movement of the plunger and a pinion restricting means. Is composed of an actuating part, a moving part and an actuating part, and a rotatable rod-shaped part which is arranged radially outside the armature and extends substantially parallel to the rotation axis. Since the rod-shaped portion of the lever is rotated in order to operate the restricting means, the lever-like member is detached from the member supporting the string-shaped member due to the bending of the string-shaped member itself like the conventional string-shaped member. In addition, while the operating portion of the lever is in contact with the pinion regulating means according to the rotation of the rod-shaped portion of the lever,
Since the pinion restricting means is actuated and the pinion is restricted in rotation by this movement, even if the pinion restricting means cannot return from the pinion end face position, the operating part of the lever contacts the pinion restricting means. Therefore, the lever can be rotated in the opposite direction by a predetermined amount of rotation of the operating portion of the lever, that is, the rod-shaped portion of the lever can be freely rotated to return the plunger to its original position and move the movable contact. Can be reliably separated from the fixed contact to prevent malfunction of the magnet switch.

Further, in the prior art, since the pinion rotation restricting member is operated via the string-like member, it is necessary to use a pulley, and this pulley causes a rotation loss of the pulley to compensate for this rotation loss. , It becomes necessary to increase the attraction force of the magnet switch, which increases the size of the magnet switch, but in order to eliminate this, it is necessary to use expensive needle bearings for the pulley, If the lever is used, the pulley itself is not necessary, the attraction force of the magnet switch can be reduced, and the size of the magnet switch can be reduced.

Further, in the past, since the cord-shaped member is bent, it is made of a soft material. When the cord-shaped member is assembled by an automatic machine, the position of the cord-shaped member is difficult to determine, and the assembly is difficult. However, by using a lever having appropriate rigidity, the position of the lever can be easily determined even when assembled by an automatic machine, and the assembling workability is improved. [Means of Claim 2] In the starter of Claim 2, the magnet switch is provided near the non-pinion side of the starter motor.
The lever is arranged substantially perpendicular to the axis of rotation, and both ends of the rod-shaped portion of the lever bend, and since both bent portions are the moving portion and the operating portion, the plunger is moved substantially in the direction of rotation of the rod-shaped portion. Is moved to rotate the moving part around the shaft of the rod-shaped part, and this rotation causes the operating part to rotate around the shaft of the rod-shaped part. The pinion regulating means can be operated smoothly.

[Means for Claim 3] In the starter according to claim 3, since the rod-shaped portion of the lever is supported by the bearing,
Rotation of the rod portion becomes easy. [Means of Claim 4] In the starter of Claim 4, the lever is
Since it is an elastic member, the lever flexes moderately, so when the pinion starts to move to the ring gear side by the pinion restricting means, the plunger can move sufficiently, so if the movable contact and fixed contact wear out over time, it will move. Even if the distance between the contact and the fixed contact is increased, the contact is reliably closed and the starter can be operated.

Further, it is possible to prevent the impact force generated when the pinion meshes with the ring gear from being absorbed by the elasticity of the lever and transmitted to the plunger. Therefore, the plunger does not vibrate, and the closing of the contact can be ensured.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a starter of the present invention will be described with reference to the drawings. FIG. 1 is an overall sectional view of the starter. As shown in FIG. 1, the starter 1 according to the present embodiment includes a starter motor 2 that receives an electric current and generates a rotational force,
The output shaft 3 arranged coaxially with the rotation shaft of the starter motor 2, a rotation force transmission means (described later) for transmitting the rotation force of the starter motor 2 to the output shaft 3, and a pinion fitted to the outer periphery of the output shaft 3. 4. After the pinion 4 meshes with a ring gear (not shown) of the engine, a rotation regulation member 6 (pinion regulation means in the present invention) that regulates rotation of the pinion 4 while the pinion 4 meshes with the ring gear, the pinion 4
And a magnet switch 7 arranged behind the starter motor 2 and the like.

(Description of Starter Motor 2) The starter motor 2 is composed of a yoke 8, a fixed magnetic pole 9, an armature 10, a brush (not shown) and the like. The yoke 8 is provided in a cylindrical shape and is sandwiched between the housing 12 and the end cover 13 together with the bearing holding plate 11 arranged on the rear end side (the right end side in FIG. 1).

The fixed magnetic pole 9 is made of, for example, a permanent magnet, and is fixed to the inner peripheral surface of the yoke 8 to form a magnetic field.
As the fixed magnetic pole 9, a field coil that generates a magnetic force by energization may be used instead of the permanent magnet.
The armature 10 includes a shaft 14 forming a rotation axis, a core 15 provided on the outer circumference of the shaft 14, and a core 15
And a commutator (not shown) mounted on the rear end surface of the core 15, and the like. In the armature 10, a shaft 14 is arranged coaxially with the output shaft 3 behind the output shaft 3, and one side of the shaft 14 is provided in a yoke 8 that partitions the armature 10 and a planetary gear speed reduction mechanism (described later). Partition wall 8
The shaft 14 is rotatably supported via a bearing 19 disposed in a, and the other end of the shaft 14 is rotatably supported by the bearing holding plate 11 via the bearing 19.

The brush is held by a holder 16 engaged with the bearing holding plate 11, and is pressed against the commutator by a spring (not shown) incorporated in the end cover 13. (Description of Output Shaft 3) The output shaft 3 has a front end rotatably supported by a bearing portion 12 a of the housing 12 via a bearing 20, and a rear end portion via a bearing 21 through a center case 22.
It is supported rotatably.

A planet carrier 23 of a planetary gear reduction mechanism is mounted on the rear end of the output shaft 3. The center case 22 is fixed to the inner periphery of the rear end side of the housing 12 and covers the outer periphery of the rotational force transmitting means. (Description of Rotational Force Transmission Means) The rotational force transmission means is composed of a planetary gear speed reduction mechanism and a one-way clutch.

The planetary gear speed reduction mechanism is a speed reduction device that reduces the rotational speed of the starter motor 2 to increase the output torque of the starter motor 2. The sun gear 24 is formed on the outer periphery of the tip of the shaft 14, and the sun gear 24 is attached to the sun gear 24. Mesh 3
Each planetary gear 25, an internal gear 26 that meshes with each planetary gear 25, and the planet carrier 23 are included. Each of the three planetary gears 25 has a pin 27 fixed to the planet carrier 23 and a bearing 28.
It is rotatably supported via. In this planetary gear reduction mechanism, as the sun gear 24 rotates together with the shaft 14, each planetary gear 25 meshing with the sun gear 24 and the internal gear 26 revolves in the same direction as the sun gear 24 while rotating (reversely rotating with the sun gear 24). Then, the revolving force is transmitted to the planet carrier 23 via the pin 27, and the output shaft 3 rotates.

The one-way clutch is a planet carrier 2
The outer 29 is fixed to the pin 27 fixed to the shaft 3, the inner 31 is provided to the output shaft 3, the roller 60, and the like. (Explanation of Pinion 4) The pinion 4 is helically spline fitted to the outer periphery of the output shaft 3 near the tip inside the housing 12, and the spring 3 arranged on the tip side of the pinion 4.
2, the output shaft 3 is always urged rearward (to the right in FIG. 1). The spring 32 biases the pinion 4 via a shutter 33 fitted to the outer periphery of the output shaft 3 in front of the pinion 4. Further, the shutter 33 is
The opening (not shown) that opens to the ring gear side of the housing 12 is opened and closed in conjunction with the movement of the pinion 4.

On the rear end side of the pinion 4, the pinion 4
A flange 34 having a larger outer diameter and a large number of recesses 34a formed on the outer periphery is integrally provided. The number of recesses 34a is greater than the number of external teeth of the pinion 4. A thrust ring 36, which is rotatable in the rotation direction of the pinion 4 via a thrust bearing 35, is attached to the rear end side of the flange 34.

(Explanation of the retreat restricting member 5) FIG. 2 is a view of the vicinity of the retreat restricting member 5 and the rotation restricting member 6 as seen from the direction A. As shown in FIGS. 1 and 2, the retreat restricting member 5 includes two plate protrusions 3 provided on the plate 39.
9a and 39b, each of which includes a connecting portion 5a that engages with a hole (not shown) provided therein, and an abutting portion 5b that abuts a first protrusion 6a (described later) of the rotation restricting member 6. There is. Part of the outer periphery of the retreat restricting member 5 is engaged by two claw portions (not shown) provided on the thrust ring 36, and together with the pinion 4, the hole serves as a fulcrum,
The backward movement restricting member 5 swings.

The plate 39 is sandwiched between the housing 12 and the center case 22. (Explanation of the rotation restricting member 6) The rotation restricting member 6 is formed by winding a rod-shaped metal material, and each tip has a first protrusion 6a that abuts on the abutting portion 5b of the receding restricting member 5.
And an operating portion 40a provided on the lever 40 (described later)
A second protrusion 6b that abuts against
The first and second protrusions 6a and 6b are bent and raised at right angles in the same direction at the radially opposite positions to project.

As shown in FIG. 1, the rotation restricting member 6 is housed in the space between the center case 22 and the plate 39, and the first and second protrusions 6a and 6b are located in front of the plate 39. It has been taken out to the space part B of FIG.
It is arranged so as to be movable in the C direction. In addition, the rotation restricting member 6 includes a spring 41 attached to the plate 39.
Is always urged in the direction B of FIG. 2 by the lever 4
When the attraction force of the magnet switch 7 is transmitted to the second protrusion 6b via 0, the entire rotation restricting member 6 moves in the C direction of FIG. 2 against the biasing force of the spring 41, and the magnet switch 7 When is turned off and the suction force disappears, the spring 41 moves in the direction B in FIG. 2 by the urging force and returns to the initial position.

(Description of Magnet Switch 7) The magnet switch 7 has a bearing holding plate 11 as shown in FIG.
Is held in the end cover 13 and held on the rear end side of
The starter motor 2 is fixed so that the shaft 14 of the starter motor 2 crosses its operating direction. The magnet switch 7 includes a switch cover 42, a coil 43, a fixed iron core 4
4, plunger 45, spring 46, and rod 4
It is composed of 7 etc. The switch cover 42 is made of a magnetic material (for example, iron) and is press-molded into a cup shape.
A plunger 45 is provided at the center of the bottom surface of the cover (lower surface in FIG. 1).
There is an insertion hole for slidably inserting.

The coil 43 is connected to an on-vehicle battery (not shown) via a vehicle start switch (ignition switch / not shown), and when the start switch is turned on and energized, a magnetic force is generated. Fixed core 44
Is arranged on the upper end side of the coil 43, and the switch cover 4
It is fixed by caulking in the opening of 2. Plunger 45
Is made of a magnetic material (for example, iron) and has a substantially columnar shape, and is disposed inside the hollow of the coil 43 so as to face the fixed iron core 44, and is magnetized when the coil 43 is energized (see FIG. 1). Is sucked up). A moving portion 40b of the lever 40 is engaged with the bottom of the plunger 45.

The spring 46 is interposed between the plunger 45 and the fixed iron core 44 on the inner circumference of the coil 43, and moves the plunger 45 downward (downward in FIG. 1) with respect to the fixed iron core 44.
Is energizing. That is, when the energization of the coil 43 is stopped, the plunger 45, which has been attracted to the fixed iron core 44 side until then against the biasing force of the spring 46, is returned to the initial position.

The rod 47 is fixed to the upper side of the plunger 45, passes through the hollow inside of the coil 43, and passes through the fixed core 4.
4 is slidably penetrated through a through hole formed in the central portion of the No. 4 and is projected upward. The magnet switch 7
The starter motor 2 is arranged substantially perpendicular to the shaft 14 of the armature 10 in the vicinity of the side opposite to the pinion 4 side.

(Explanation of Contact Structure of Starter Motor 2) The contact structure is fixed to the terminal bolt 48 attached to the end cover 13 and the head 48a of the terminal bolt 48.
The fixed contact 49 to which the starting resistor 51 is connected, and the main movable contact 5 connected to the lead wire (not shown) of the positive electrode side brush
0, a sub movable contact 52 connected to the main movable contact 50 through a copper plate.

The terminal bolt 48 penetrates the bottom wall 13a of the end cover 13 and is attached with its tip end side exposed to the outside of the end cover 13, and is fixed to the end cover 13 by tightening the washer 53. The terminal bolt 48 is connected to the positive electrode of the vehicle-mounted battery by a power supply line (not shown). The fixed contact 49 is fixed to the head portion 48 a of the terminal bolt 48 inside the end cover 13 by welding or the like.

The main movable contact 50 is disposed so as to face the fixed contact 49, and is slidably fitted to the rod 47 of the magnet switch 7. The starting resistor 51 is wound with, for example, a nickel wire, one end of which is connected to the fixed contact 49, and the other end of which is arranged to face the sub movable contact 52. The auxiliary movable contact 52 is arranged to face the starting resistor 51, and when the magnet switch 7 is turned on and the plunger 45 is attracted, the auxiliary movable contact 52 is electrically connected to the terminal bolt 48 as the rod 47 moves. When the magnet switch 7 is turned off by coming into contact with the resistor 51, it comes into contact with the outer end surface of the fixed iron core 44 to be in an electrically conductive state.

The gap between the auxiliary movable contact 52 and the starting resistor 51 is set smaller than the gap between the main movable contact 50 and the fixed contact 49, the magnet switch 7 is turned on, and the plunger 45 is fixed. When the main movable contact 50 is attracted to the side, the auxiliary movable contact 52 comes into contact with the starting resistor 51 electrically connected to the terminal bolt 48 before the main moving contact 50 comes into contact with the fixed contact 49, so that the battery voltage becomes the starting resistor 51. Is applied to the armature 10 of the starter motor 2 via.

(Explanation of Lever 40) FIG. 3 is a partial sectional view of the end cover 13 as seen from the direction D, and FIG. 4 is a side sectional view showing the lever 40 arranged around the yoke 8. The lever 40 is made of a material having an appropriate elasticity, for example, iron, and the lever 40 is provided with a plunger 45.
A moving part 40b that is engaged with the moving part 40b and moves by the movement of the plunger 45, an operating part 40a that comes into contact with the second protrusion 6b of the rotation restricting member 6 to operate, a moving part 40b and an operating part 4
0a is connected to the rod-shaped portion 40c having a linear rod shape.
It is composed of The rod-shaped portion 40 c is arranged outside the outer diameter of the armature 10 in the radial direction and extends substantially parallel to the shaft 14. The term "substantially parallel" means that the angle formed by the axis of the rod-shaped portion 40c and the axis of the shaft 14 is in the range of 0 to 20 degrees.

Further, the moving portion 40b and the operating portion 40a are arranged so that the rod-shaped portion 4 extends radially outward with the axis of the rod-shaped portion 40c as the center.
0c extends from both ends, and the angle formed by the moving portion 40b and the operating portion 40a about the axis of the rod-shaped portion 40c is a predetermined angle (for example, about 60 °). The rod-shaped portion 40c is rotatably supported by bearings 61 and 62 made of two resins.
The bearing 62 is sandwiched between the two and the center case 20.
Are sandwiched between the end cover 13 and the bearing holding plate 11.

Next, the operation of this embodiment will be described. When the occupant turns on the start switch, the coil 43 of the magnet switch 7 is energized, and the plunger 45 is attracted to the side of the fixed iron core 44 magnetized against the biasing force of the spring 46. Along with the movement of the plunger 45, the moving portion 40b of the lever 40 rotates about the shaft of the rod-shaped portion 40c, and this rotation also rotates the rod-shaped portion 40c of the lever 40 pivotally supported by the bearings 61 and 62. When the operating portion 40a moves around the shaft of the rod-shaped portion 40c, the operating portion 40a abuts on the second protrusion 6b of the rotation regulating member 6 and the rotation regulating member 6 moves as shown in FIG. The pinion 4 is restricted from rotating by moving in the C direction 2 by a predetermined amount and engaging the first protrusion 6a with the recess 34a provided on the outer periphery of the flange 34.

On the other hand, as the plunger 45 rises, the auxiliary movable contact 52 comes into contact with the starting resistance 51 electrically connected to the terminal bolt 48, and the positive brush is energized via the starting resistance 51. The starter motor 2 is activated and the armature 10 rotates with a low voltage applied. The rotation of the armature 10 is decelerated by the planetary gear reduction mechanism and transmitted to the output shaft 3 so that the output shaft 3 rotates. The rotation of the output shaft 3 also tries to rotate the pinion 4, but since the rotation of the pinion 4 is restricted by the first protrusion 6 a, the rotational force of the output shaft 3 is axially directed with respect to the pinion 4. Acts as thrust to push out. As a result, the pinion 4 can move forward with respect to the output shaft 3 along the helical spline and engage with the ring gear.

On the other hand, the retreat restricting member 5 is pulled by the thrust ring 36 as the pinion 4 advances and swings together with the pinion 4 with the holes of the two plate projections 39a and 39b provided on the plate 39 as fulcrums. To do. Further, in the rotation restricting member 6, when the pinion 4 is completely meshed with the ring gear, the tip of the first protruding portion 6a is the flange 34.
The rotation restriction of the pinion 4 is released by disengaging from the recess 34a and falling to the rear end side of the retreat restriction member 5.

After that, when the main movable contact 50 comes into contact with the fixed contact 49, the starting resistor 51 is short-circuited, the rated voltage is applied to the starter motor 2, and the armature 10 rotates. As a result, the rotation of the armature 10 is transmitted to the output shaft 3 via the planetary gear reduction mechanism, and the pinion 4 whose rotation restriction has been released rotates together with the output shaft 3 to rotate the ring gear to start the engine. You can

When the pinion 4 moves forward and meshes with the ring gear, the urging force of the spring 32 arranged on the tip side of the pinion 4 increases. Also, after starting the engine,
When the pinion 4 is rotated by the ring gear, the rotational force of the engine acts in the direction of retracting the pinion 4 by the action of the helical spline. With these forces,
Although the pinion 4 tries to retreat with respect to the output shaft 3, the first projection 6 a of the rotation restricting member 6 abuts on the contact portion 5 a of the retreat restricting member 5, whereby the retreat of the pinion 4 is restricted, It is possible to prevent the pinion 4 from retracting to the armature 10 side.

After that, when the start switch is turned off and the energization of the coil 43 of the magnet switch 7 is stopped, the magnetic force of the coil 43 disappears, and thus the plunger 45 that has been attracted to the fixed iron core 44 side until then. Is returned to the initial position by the urging force of the spring 46 (moves downward in FIG. 1). When the plunger 45 returns to the initial position, the second portion of the rotation restricting member 6 is moved through the lever 40.
Since the force that abuts against the protruding portion 6b and is pressed downward disappears, the rotation restricting member 6 returns to the initial position by the spring force of the return spring 41.

At this time, the retreat restricting member 5 is released from the engagement state by disengaging the first protrusion 6a of the rotation restricting member 6 from the engaging recess 5d, and the operating portion 40a of the lever 40 is rotated restricting member. The second protruding portion 6b of 6 is detached, and the contact is released. As a result, the pinion 4 which receives the backward force from the ring gear is returned to the stationary position. (Effect of the first embodiment) In this embodiment, the movement of the plunger 45 is made to operate the rotation restricting member 6 via the lever 40, and the lever 40 is
5, a moving part 40b that moves by moving 5 and an operating part 40 that abuts on the second protrusion 6b of the rotation restricting member 6 to operate.
a, a movable portion 40b and an actuating portion 40a are connected to each other, and a rotatable rod-shaped portion 40c that is disposed outside the armature 10 in the radial direction and extends substantially parallel to the shaft 14 is provided. Since the rod-shaped portion 40c of the lever 40 is rotated to operate the rotation restricting member 6, the cord-shaped member is supported by the bending of the cord-shaped member itself like a conventional cord-shaped member. It does not fall off from the member, and the operating portion 40a of the lever 40 is
The rod-shaped portion 40c is moved by a predetermined amount while being in contact with the rotation restricting member 6 according to the rotation of the rod-like part 40c, and the rotation restricting member 6 is actuated by this movement to restrict rotation of the pinion 4.
Even if the rotation restricting member 6 cannot be returned from the contact position with the retreat restricting member 5, the operating portion 40a of the lever 40.
Is only in contact with the rotation restricting member 6, the lever 4
The operation portion 40a of 0 is rotatable by a predetermined amount, that is, the rod-shaped portion 40c of the lever 40 is freely rotatable, the plunger 45 is returned to the initial position, and the main movable contact 50 is moved. From the fixed contact 49 to the auxiliary movable contact 5
2 is a starting resistor 5 electrically connected to the fixed contact 49
It is possible to prevent the magnet switch 7 from becoming defective, and it is possible to prevent malfunction of the magnet switch 7.

Further, conventionally, since the rotation restricting member is operated via the string-like member, it is necessary to use a pulley, and this pulley causes a rotation loss of the pulley, and in order to compensate for this rotation loss. Needs to increase the attraction force of the magnet switch 7, which increases the size of the magnet switch 7. However, in order to eliminate this,
Although it is necessary to use an expensive needle bearing for the pulley, if the lever 40 is used, the pulley itself is not necessary, the attraction force of the magnet switch 7 can be reduced, and the size of the magnet switch 7 can be reduced.

Further, in the past, since the cord-shaped member is flexible, it is made of a soft material, and when the cord-shaped member is assembled by an automatic machine, the position of the cord-shaped member is difficult to determine and the assembly is difficult. However, by using the lever 40 having an appropriate rigidity, the position of the lever is easily determined even when the lever 40 is assembled by an automatic machine, and the assembling workability is improved. Further, the magnet switch 7 is provided near the shaft 14 of the armature 10 near the side of the starter motor 2 opposite to the pinion 4.
Is arranged substantially perpendicular to the
Since the moving portion 40b and the operating portion 40a are formed by bending from both ends of the rod-shaped portion 40c, the plunger 45 is moved in the substantially rotation direction of the rod-shaped portion 40c, and the plunger 45 is moved.
Moves the moving portion 40b around the axis of the rod-shaped portion 40c, and this rotation causes the operating portion 40a to rotate around the axis of the rod-shaped portion 40c, so that the attraction force of the magnet switch 7 is activated. The rotation restricting member 6 can be operated smoothly by efficiently converting the rotation force of the portion 40a.

Furthermore, since the rod-shaped portion 40c of the lever 40 is rotatably supported by the bearings 61 and 62, the rod-shaped portion 40c can be easily rotated. Further, since the lever 40 is an elastic member, the lever 40 flexes moderately. Therefore, by restricting the rotation by the rotation restricting member 6, when the pinion 4 starts to move to the ring gear side, the plunger 45 can sufficiently move. If the main movable contact 50, the sub movable contact 52, and the fixed contact 49 are worn over time, the main movable contact 50,
Even if the distance between the auxiliary movable contact 52 and the fixed contact 49 increases, the contact is reliably closed and the starter 1 can be operated.

It is also possible to prevent the impact force generated when the pinion 4 meshes with the ring gear from being absorbed by the elasticity of the lever 40 and transmitted to the plunger 45. Therefore, the plunger 45 does not vibrate and the contact can be reliably closed.

[Brief description of drawings]

FIG. 1 is an overall sectional view of a starter.

FIG. 2 is a view as seen from the direction A around the retreat restricting member 5 and the rotation restricting member 6.

FIG. 3 is a partial cross-sectional view of the end cover 13 seen from the D direction.

FIG. 4 is a side sectional view showing a lever 40 arranged around the yoke 8.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Starter 2 Starter motor 3 Output shaft 4 Pinion 6 Pinion restricting means (rotation restricting member) 10 Armature 14 Rotating shaft (shaft) 40 Lever 40a Operating part 40b Moving part 40c Rod part 45 Plunger 49 Fixed contact 49 50 Movable contact (main movable) Contact point) 52 Moving contact point (sub moving contact point)

Claims (4)

[Claims] 1. An output shaft driven by a starter motor comprising an armature having a rotating shaft, a pinion provided on the output shaft for meshing with a ring gear of an engine, a fixed contact, and a movable contact abutting on the fixed contact. And a coil that generates a suction force when energized, and a plunger that moves by the suction force. By the movement of the plunger, the movable contact moves and comes into contact with the fixed contact. A magnet switch for energizing a motor, a pinion restricting means for restricting the rotation of the pinion to move the pinion to the ring gear side, a moving part that moves by moving the plunger, and the pinion restricting means. The actuating part to be actuated, the moving part and the actuating part are connected, and the diameter of the armature is A lever formed of a rotatable rod-shaped portion that is disposed on the outer side and extends substantially parallel to the rotation axis, and the moving portion moves by the movement of the plunger, and the rod-shaped portion moves by this movement. Rotating, moving a predetermined amount while contacting the operating portion with the pinion restricting means, operating the pinion restricting means, restricting rotation of the pinion, and moving the pinion to the ring gear side. Characterized starter. 2. The magnet switch is arranged substantially perpendicular to the rotation axis of the armature near the anti-pinion side of the starter motor, and both ends of a rod-shaped portion of the lever are bent, respectively. The starter according to claim 1, wherein the bent portions are the moving portion and the actuating portion. 3. The starter according to claim 1, wherein the rod-shaped portion of the lever is supported by a bearing. 4. The starter according to claim 1, wherein the lever is made of an elastic member.