JPH1018950A - Starter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate inconvenience in design of a starter arising from the arrangement of its magnet switch, suppress the operational failure of its pinion movable body, and prevent the intrusion of muddy water, dust and the like thereinto. SOLUTION: A starter comprising a pinion movable body 1, a housing 2 pivotally supporting the pinion movable body, and a motor 3 is provided with a magnet switch 4 arranged at the rear end of the motor 3 and an interlocking rod 6 for interlocking the pinion movable body 1 with a plunger 41 of the magnet switch 4. The interlocking rod 6 is received a groove extended axially in the motor 3, and transfers therethrough the driving force of a plunger rod 42 to move the pinion movable body 1 which in turn causes a pinion 12 to mesh with a ring gear R. That arrangement reduces the front area of the starter and thus facilitates the arrangement thereof in an engine room, and the incorporation of the interlocking rod 6 which is kept from being exposed to the outside prevents the intrusion of dust and the like into the starter to improve the reliability thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a starter for starting an engine of an automobile or the like by rotating and driving the engine with the power of an electric motor.

[0002]

2. Description of the Related Art In a recent automobile engine starter,
The problem of spatial interference with other devices (so-called location confrontation) in equipment in the engine room is becoming more serious. Therefore, if the magnet switch is arranged in parallel with the motor of the starter as usual, the arrangement of the devices in the engine room at the design stage may not be performed properly. In addition, a magnet switch arranged in parallel with the motor may hinder assembly in the engine room or attachment and detachment for maintenance or repair. Therefore, practical use of a starter that solves these problems by changing the arrangement of the magnet switches from normal is expected.

The prior art of such a starter is disclosed in Australian Patent No. 94-80486 (EP 0
(Same as 702149A1) discloses a starter in which a magnet switch is disposed on the opposite side of a housing with respect to a motor. In this starter, when the magnet switch is energized, the operation of the plunger is transmitted to the pinion rotation restricting member via the string-shaped member. Then, the pinion rotation restricting member pulled by the string-like member restricts the rotation of the pinion moving body, so that the pinion moving body protrudes along the spline of the pinion drive shaft, and the pinion meshes with the ring gear of the engine.

Conversely, when the power supply to the magnet switch is stopped, the plunger returns and the string-like member is loosened, so that the action of projecting the pinion moving body is lost, and the pinion moving body is moved backward to its original position. And the ring gear is released from the pinion.

[0005]

In the starter according to the prior art described above, the power is not supplied to the magnet switch, the plunger returns, and the string-like member is loosened. For some reason, the pinion does not return while being engaged with the ring gear. And cause problems. That is, since the string-like member is left loose, the string-like member may be detached from the pulley holding the string-like member, and fall into the gap between the pulley and the pulley-holding member. Then, the string-shaped member does not move while being caught in the gap, leading to a malfunction of the starter.

On the other hand, a starter which operates a pinion restricting means by rotating a lever along the outer peripheral surface of a yoke is provided with a magnet switch in a rear lid of the motor. No. This prior application technique is excellent in that the problem due to the falling off of the cord-like member is prevented, but since the lever is exposed along the outer peripheral surface of the yoke, the lever is introduced into the housing and the rear lid. A through hole is formed. Therefore, there is a risk that water, mud, dust, and the like, which are applied to the starter during operation, may penetrate into the housing and the rear lid from both through holes, and it cannot be said that the reliability is completely sufficient. .

In view of the above, the present invention has changed the arrangement of the magnet switch from normal to eliminate the inconvenience in design,
An object to be solved is to provide a starter in which the following two points are solved. That is, the first point is that there is little malfunction of the moving mechanism of the pinion moving body due to the plunger of the magnet switch, and high reliability is secured. The second point is that water, mud, dust and the like are prevented from entering the housing and the rear lid.

In summary, the present invention eliminates the design inconvenience caused by the arrangement of the magnet switches, and
An object of the present invention is to provide a starter in which a pinion moving body has few malfunctions and in which muddy water and dust are prevented from entering.

[0009]

Means for Solving the Problems and Their Functions and Effects In order to solve the above problems, the inventors have invented the following means. (First Means) A first means of the present invention is a starter according to claim 1. In this means, the magnet switch is disposed adjacent to the other end of the motor. This means has an interlocking rod consisting of an operating portion that comes into contact with the pinion moving body, a rod-shaped intermediate portion, and an actuated portion that engages with a plunger of a magnet switch. Are housed in the yoke along the inner peripheral surface of the yoke. The interlocking rod is held movably within a predetermined range with respect to the yoke, and the driving force of the plunger of the magnet switch is transmitted via the interlocking rod to move the pinion moving body.

Therefore, in this means, since the magnet switch is held by the rear end of the motor (the end opposite to the housing) or the rear lid, the front area (projected area on a plane orthogonal to the pinion drive shaft) is obtained. Is suppressed to about the cross-sectional area of the motor. In addition, an interlocking rod is used for the means (moving mechanism) for transmitting the driving force of the plunger to the pinion moving body, and unlike the related art, a string-shaped member is not used. Has been prevented.

Therefore, according to the present invention, since the malfunction of the moving mechanism of the pinion moving body by the plunger of the magnet switch is prevented while the front area of the starter is reduced, the reliability of the starter is improved. is there. In this means, the interlocking rod is a yoke,
Since it is built into the housing and the rear lid, the interlocking rod is not exposed to the outside, and no through hole for guiding the interlocking rod to the outside is formed. Therefore, there is also an effect that muddy water and dust from the outside are prevented from entering the inside of the starter.

In summary, the present invention eliminates the design inconvenience caused by the arrangement of the magnet switches, and
There is an effect that it is possible to provide a starter in which the operation failure of the pinion moving body is small and the intrusion of muddy water or dust is prevented. Note that, similarly to the above-described related art, a configuration is also possible in which a rotation restricting member that locks the rotation of the pinion moving body is provided, and the pinion moving body is pushed out by a spline of the pinion drive shaft. According to this configuration, even with a small and lightweight magnet switch, the pinion moving body can be strongly pushed out and fitted to the ring gear, which is more preferable.

Further, in this means, a groove is formed in the inner peripheral surface of the yoke of the motor in the axial direction, and at least a part of the intermediate portion of the interlocking rod is accommodated in this groove. This groove is usually formed between the adjacent field poles, and the interlocking rod does not block the space between the adjacent field poles. Therefore, according to this means, there is an effect that the interlocking rod does not hinder the cooling of the adjacent field poles and does not significantly affect the field magnetically.

(Second Means) A second means of the present invention is a starter according to claim 2. In this means, the groove on the inner peripheral surface of the yoke is formed not only on the yoke but also on the housing and the rear lid joined to the yoke, and the grooves correspond (the groove lines match). A part of the operating part and a part of the operated part of the interlocking rod are accommodated in the groove of the housing and the groove of the rear lid, respectively. Therefore, the interlocking rod can form a rod-shaped linear portion over the entire length of the yoke, which is advantageous in a case where the interlocking rod is supported by the housing or the rear lid.

In addition, the actuated part and the actuated part need not be connected to the intermediate part by an obliquely long arm. The actuated part and the actuated part are formed at a right angle from the intermediate part, and the shortest moment arm Can be suppressed. Therefore, the bending and torsional moments applied to the actuated part and the actuated part, which are located in the radial direction from the rotation axis of the intermediate part, are reduced, and the stress and strain generated on the interlock rod are reduced, so that the weight of the interlock rod is reduced. Can also be planned.

Therefore, according to this means, in addition to the effect of the above-mentioned first means, there is an effect that not only the arrangement of the interlocking rod becomes easy but also the weight of the interlocking rod can be reduced. (Third Means) A third means of the present invention is a starter according to claim 3. In this means, the magnet switch is disposed substantially perpendicularly to the motor rotation axis (not necessarily at the intersection, but may be in a twisted positional relationship). Then, when the magnet switch is actuated and the plunger moves linearly, the interlocking rod rotates around the axis of the intermediate part because it is engaged with the plunger at an actuated part that is eccentric from its rotation axis. Then, the operating part of the interlocking rod also rotates integrally, and presses the pinion moving body at the front end of the operating part which is formed in a spiral shape with a lead in the axial direction around the axis of the intermediate part. Move it to the position where it meshes with the ring gear of the engine.

Therefore, according to this means, in addition to the effect of the above-mentioned first means, the magnet switch (usually, the overall length is longer than the diameter) is disposed substantially perpendicular to the motor rotation axis. There is an effect that the starter becomes more compact without increasing the overall length much. If the magnet switch is housed in the motor rear lid, there is an effect that the magnet switch is also protected.

(Fourth Means) A fourth means of the present invention is the starter according to claim 4. In this means, there are at least two small-diameter portions in the middle of the interlocking rod, and the bearing is fitted to the small-diameter portion to support the interlocking rod. Each bearing is fixed to one of the grooves among the yoke, the housing, and the rear lid.

Therefore, according to this means, in addition to the effect of the third means described above, the intermediate portion of the interlocking rod is supported by the bearing, so that the friction accompanying the rotational movement of the interlocking rod is small, and The rotation operation becomes smooth. Also, the middle part of the interlocking rod is the inner peripheral surface of the yoke etc. (the surface of the groove etc.)
Because there is no contact at a predetermined distance, the interlocking rod does not touch the yoke, the housing, or the inner peripheral surface of the rear lid, and the operation is not hindered. Therefore, there is an effect that the operation of the interlocking rod is smooth and the reliability of the movement action of the pinion moving body is increased.

(Fifth Means) A fifth means of the present invention is the starter according to the fifth aspect. In this means, similarly to the fifth means described above, the intermediate portion of the interlocking rod is supported by bearings at at least two places. However, the interlocking rod does not require a small-diameter portion at the intermediate portion, and is different from the fourth means in that a retaining ring is fixed to the intermediate portion of the interlocking rod adjacent to the bearing in the axial direction. That is, the movement of the interlocking rod in the longitudinal direction is restricted by the action of the retaining ring.

Therefore, according to this means, in addition to the effect of the above-described fourth means, it is not necessary to form a small-diameter portion on the interlock rod, so that the interlock rod can be made lighter and tougher. This has the effect. (Sixth Means) A sixth means of the present invention is a starter according to claim 6.

In this means, unlike the above-mentioned third means, the magnet switch is disposed substantially parallel to the rotation axis of the motor. The interlocking rod is held so as to be movable in parallel with the motor rotation axis, the operated part of the interlocking rod is engaged with the plunger, and the operating part is in contact with the pinion moving body. Therefore, when the magnet switch is actuated and the plunger protrudes in the direction of the pinion, the interlocking rod engaged with the plunger and the actuated part also moves in the direction of the pinion in parallel with the motor rotation axis to operate the pinion moving body. Extrude with the part. As a result, the pinion moving body is moved by being pushed by the interlocking rod, and the pinion protrudes and meshes with the ring gear of the engine, and the ring gear is rotationally driven by the rotational force of the motor to start the engine.

That is, in this means, since the magnet switch is disposed substantially parallel to the motor rotation axis, the interlocking rod pushes the pinion moving body by parallel movement. Therefore, according to this means, in addition to the effect of the above-described first means, there is an effect that the configuration of the interlocking rod is simplified, and further simplification and cost reduction can be achieved.

(Seventh Means) A seventh means of the present invention is a starter according to claim 7. In this means, the holding rod is slidably held in the longitudinal direction at at least two places at the intermediate portion of the interlocking rod. Therefore, according to this means, in addition to the effect of the above-mentioned sixth means, since the intermediate portion of the interlocking rod is supported by the holding member, friction when sliding the interlocking rod is small, and the linear sliding operation of the interlocking rod is performed. Becomes smoother. Further, since the intermediate portion of the interlocking rod is not in contact with the inner peripheral surface (the surface of the groove or the like) of the yoke or the like at a predetermined distance, the interlocking rod touches the inner peripheral surface of the yoke, the housing, or the rear lid. Operation is not hindered.
Therefore, there is an effect that the operation of the interlocking rod is smooth and reliability is enhanced.

(Eighth Means) An eighth means of the present invention is the starter according to claim 8. In this means, since the interlocking rod is made of a non-magnetic material, it does not receive a magnetic force due to a field magnetic field which fluctuates rapidly and does not vibrate due to the field. Therefore, according to this means, the first
In addition to the effect of the means, since the interlocking rod does not vibrate due to the magnetic field and does not collide with the surroundings due to the vibration, there is an effect that reliability is improved.

(Ninth Means) A ninth means of the present invention is the starter according to the ninth aspect. In this means, when the magnet switch is operated and the plunger is attracted, the displacement is transmitted to the pinion rotation restricting member via the interlocking rod,
The rotation of the pinion moving body is regulated. Then, a difference in rotation speed is generated between the output shaft that is rotationally driven and the pinion moving body, and the pinion moving body is strongly pushed by the action of the spline and moves to a position where it meshes with the ring gear.

According to the structure of this means, the force required to operate the pinion rotation restricting member is smaller and the load applied to the interlock rod is smaller than the structure in which the pinion moving body is directly pushed and moved by the interlock rod. . Therefore, the electromagnetic attraction force of the magnet switch that drives the interlock rod can be reduced, and the interlock rod and the magnet switch can be reduced in size and weight.

Therefore, according to this means, in addition to the effect of the first means, there is an effect that the size and weight of the starter can be further reduced and the cost can be reduced. In addition, since the electromagnetic attraction force of the magnet switch is small, the peak of the starting power can be suppressed,
There is also an effect that the demand for the capacity of the starting circuit is eased, which leads to a reduction in the weight and cost of the starting circuit.

[0029]

[Example 1]

(Overall Configuration of First Embodiment) As shown in FIG. 1, a starter according to a first embodiment of the present invention includes a pinion moving body 1, an output shaft 11, a housing 2, a motor 3, a magnet switch 4 and the like.
And In the figure, the left side in the figure is the front, the right side in the figure is the rear, the upper side in the figure is the upper side, and the lower side in the figure is the lower side for convenience of explanation.

The pinion moving body 1 includes a pinion gear 12 and a one-way clutch (overrunning clutch) 13.
And a retainer washer 14. The pinion gear 12 meshes with a ring gear formed on the outer periphery of a flywheel F fixed to a crankshaft (not shown) of an engine (not shown), and connects the flywheel F to the motor 3.
The shaft is driven to rotate. The pinion moving body 1 is engaged with a spline formed on the outer peripheral surface of the output shaft 11 and is supported along the output shaft 11 so as to be movable in the axial direction thereof. The retainer washer 14 is a disk member having a through hole at the center. In the retainer washer 14, the inner peripheral portion of the clutch 13 is fitted into a circumferential groove formed on the outer periphery of the cylindrical portion of the outer member 13a, and
3a (or may be rotatably engaged with the groove of the outer member 13a).

The housing 2 is a structural member made of a cast aluminum alloy forming the outer shape of the front part of the starter. The housing 2 is rotatably connected to the front end of the output shaft 11 via a bearing 27 at the front end 21. Support. The housing 2 is abutted and fixed to a casing (not shown) or the like accommodating the flywheel F by a contact portion 22 formed facing the front. The above-described pinion moving body 1 is housed in an internal space of the housing 2.

As shown in FIG. 2A, the motor 3 has a substantially pipe-shaped yoke (yoke) 3 made of a soft magnetic material (soft iron).
4 and a plurality of field magnetic poles 37 disposed on the inner periphery thereof;
It comprises a rotor (armature) 32 having a rotation shaft 31 inserted at the center, and an end frame 5 as a rear lid. As shown in FIG. 1 again, the motor 3 is fitted to the rear end 24 of the housing 2 at the front end of the yoke 34, and is fitted to the front end 51 of the end frame 5 at the rear end of the yoke 34. ing. The housing 2 and the end frame 5 are compressed and fastened to each other in the axial direction by a through bolt 7 passing outside the yoke 34.

The end frame 5 is a structural member made of a cast aluminum alloy. The end frame 5 is fitted and fixed to the rear end of the yoke 34 at the front end 51 and an end plate 53 covering the rear end surface of the cylindrical portion 52 and the cylindrical portion 52. And form an internal space. In the internal space of the end frame 5, the magnet switch 4 having the plunger 41 attracted by the magnetic coil 44 when energized is fixed and held to the end plate 53 of the end frame 5.

The magnet switch 4 is disposed in a direction where the rotating shaft 31 of the motor 3 and the moving direction of the plunger 41 are perpendicular to each other. The magnet switch 4 has a magnetic coil 44 wound on a bobbin and a magnetic circuit member 45 of a hollow cylindrical body surrounding the magnetic coil 44, and the magnetic circuit member 45 is fixed to an end plate 53. The magnet switch 4 has a plunger 41 fitted in a through hole formed at the center of the magnetic coil 44 and held so as to be slidable in the axial direction of the through hole. When energized, it is attracted into the through hole of the magnetic coil 44, and when the energization is stopped, the return spring 4
It returns to the protruding position by the spring elastic force of No. 6.

As shown in FIG. 3, the plunger 41 holds a plunger rod 42 projecting from the lower end thereof, and an engagement hole 43 penetrating in the front-rear direction is formed at the tip of the plunger rod 42. Have been. A rear end portion of a crank-shaped operated portion 64 of the interlocking rod 6 described later is inserted into and engaged with the engagement hole 43. A main switch (see FIG. 3) is provided at the upper end of the magnet switch 4. The main switch is a terminal case fixed so as to cover a movable contact fitting 48 held at the upper end of the plunger 41 protruding from the magnetic circuit member 45 and a through hole obliquely above the cylindrical portion 52 of the end frame 5. And a fixed contact fitting 49 fixed to 54. As shown in FIG. 1 again, the fixed contact fitting 49 is electrically connected to an external circuit (a starting circuit that is electrically connected to the battery positive electrode) via the terminal fitting 47, while the movable contact fitting 48 is a conductive wire (not shown).
Through a plus brush (not shown) of the motor 3.

The axis of the plunger 41 of the magnet switch 4 is set at 45 degrees around the rotation axis 31 with respect to the direction of gravity.
It is arranged to be tilted about °. Therefore, the terminal fittings 47 and the terminal case 54 are not disposed immediately above the starter as shown in FIG. 1 for convenience, but are disposed at inclined positions as shown in FIGS. 3 and 9. . (Disposition and Configuration of Interlocking Rod of First Embodiment) The magnet switch 4 is disposed in the end frame 5 forming the rear end of the motor 3, and the driving force of the plunger 41 is transmitted via the interlocking rod 6. And the pinion moving body 1 is connected to the output shaft 1
Move along 1. As a result, the pinion gear 12 protrudes and meshes with the ring gear R in the same manner as a normal starter, and the pinion gear 12 is connected to the motor 3 via the output shaft 11.
, The ring gear R is rotationally driven to start the engine.

In this embodiment, since the reduction gear is not provided in the present embodiment, the rotation shaft 31 of the motor 3 and the output shaft 11 are integrally formed of the same member. However, for example, in a reduction-type starter having a configuration in which a planetary reduction gear is provided between the rotation shaft 31 of the motor 3 and the output shaft 11, the rotation shaft 31 of the motor 3 and the output shaft 11 are separate members. It rotates at different rotation speeds depending on the ratio of the reduction ratio.

The interlocking rod 6 is shown in FIGS.
As shown in (a) to (d), it is a member obtained by bending a round bar made of non-magnetic stainless steel. That is, the interlocking rod 6 includes an operating portion 62 that comes into contact with the pinion moving body 1, a straight round bar-shaped intermediate portion 63, and a magnet switch 4.
And an actuated portion 64 which engages with the plunger rod 42 of the first embodiment. The interlocking rod 6 includes a yoke 34
The intermediate portion 63 is accommodated along the inner peripheral surface of the housing and is rotatably held within a predetermined range.

More specifically, as shown in FIGS. 2A and 2B, the yoke 34 has a protruding portion 3 whose outer peripheral surface and inner peripheral surface protrude outward between the adjacent field magnetic poles 37.
5 are formed in the axial direction of the rotating shaft 31. The intermediate portion 63 of the interlocking rod 6 is accommodated in a groove 36 formed by the inner peripheral surface of the protruding portion 35 of the yoke 34, and is held rotatably within a predetermined range.

As shown in FIGS. 5 (a) and 5 (b), the intermediate portion 63 of the interlocking rod 6 has two small diameter portions 60 each having a smaller diameter than the adjacent portion. FIG.
As shown in FIGS. 2A and 2B again, the interlocking rod 6 is rotatably supported by respective bearings 65 fitted to the small diameter portions 60 of the intermediate portion 63. Each bearing 65 is fixed by screws 66 in contact with the inner peripheral surface of the groove 36 at the front end portion and the rear end portion of the yoke 34. In addition to the fixing with the screws 66, the bearings 65 are fixed by caulking the edges of the grooves 36, or the respective bearings 6 are welded.
5 may be fixed to the groove 36.

As shown in FIGS. 3 and 4, grooves 56 and 26 are formed in the end frame 5 and the housing 2 so as to be continuous with the groove 36 on the inner peripheral surface of the protrusion 35 of the yoke 34. Projecting portions 55 and 25 are formed respectively. In the grooves 56, 26 formed by the protruding portions 55, 25, a part of the operating part 62 of the interlocking rod 6 and a part of the operated part 64 are accommodated, respectively. The bearing 65 of FIG. 3 is joined to the yoke 34 and is drawn so as to be seen through the end face of FIG.

As described above, the interlocking rod 6 is connected to the intermediate portion 63.
Are rotatably supported around the axis of the
The crank-shaped actuated portion 64 is inserted and engaged with the engagement hole 43 of the plunger rod 42 at a rear end portion of the intermediate portion 63 at a rear end portion separated from the axis by a predetermined distance. Therefore, FIG.
As shown in (1), the linear movement L of the plunger 41 is converted into a rotational movement I around the axis of the intermediate portion 63, and the interlocking rod 6 is rotationally displaced.

As shown in FIG. 4 again, since the helical front end portion 61 is formed around the axis of the intermediate portion 63 in the operating portion 62 of the interlocking rod 6, when the interlocking rod 6 is rotationally displaced, the intermediate portion is rotated. The front end portion 61 also rotates around the axis of 63. Then, since the front end portion 61 is in contact with the retainer washer 14 of the pinion moving body 1 from behind, the retainer washer 14 is pushed forward, and the interlocking rod 6 moves the pinion moving body 1 forward.

(Assembling Procedure of the First Embodiment) The assembling procedure of the starter of the present embodiment will be described focusing on the assembling of the interlocking rod 6. First, two small-diameter portions 60 are formed in a middle portion 63 of a straight stainless steel round bar, which is a material of the interlocking rod 6, by cutting using a lathe or the like. Then, the bearing 65 is passed through the through-holes of the two bearings 65, and the bearing 65 is tightened by applying a pressing force from the entire circumference at the intermediate portion 63 to reduce the diameter of the bearing 65 and fit the small-diameter portion 60 of the intermediate portion 63. And
With the bearing 65 held in each small-diameter portion 60, the round bar is bent while leaving the intermediate portion 63, thereby forming the above-described operating portion 62 and the operated portion 64. after that,
Each bearing 65 is fastened and fixed to the protrusion 35 of the yoke 34 with a screw 66. Note that a configuration in which the bearing 65 is formed of a half-split member is also possible, and in this configuration, the bearing 65 need not be tightened.

Next, the end frame 5 in which the magnet switch 4 is incorporated in advance is joined to the rear end of the yoke 34 with the plunger 41 and the interlocking rod 6 engaged. That is, the rear end of the actuated portion 64 of the interlocking rod 6 is inserted into and engaged with the engagement hole 43 of the plunger rod 42 of the magnet switch 4, and the front end of the end frame 5 is maintained while maintaining the engaged state. 51 to yoke 34
To the rear end. In addition, the front end of the yoke 34 is joined to the rear end 24 of the housing 2, and the end frame 5 and the housing 2 are fastened by two diagonal through bolts 7 sandwiching the yoke 34. Then, the front end portion 61 of the operating portion 62 of the interlocking rod 6 comes into contact with the retainer washer 14 of the pinion moving body 1 from behind,
Assembly is completed.

(Effects of Embodiment 1) Since the starter of this embodiment is configured as described above, it has the following functions and exhibits excellent effects. First, the magnet switch 4 is disposed in the end frame 5 which is the rear lid of the motor 3, and the interlocking rod 6 engaged with the plunger rod 42 and interlocking with the pinion moving body 1 is moved from the end frame 5. The housing 2 is provided. The operating part 62 of the interlocking rod 6 is provided in the housing 2 in the middle part 6.
3 is in the yoke 34 and the actuated part 64 is the end frame 5
Each is built inside, and there is no part exposed to the outside. The interlocking rod 6 is rotatably held around the axis of the intermediate portion 63 by a bearing 65, and the driving force from the plunger 41 of the magnet switch 4 is transmitted through the rotation of the interlocking rod 6, The pinion moving body 1 is moved.

Therefore, since the magnet switch 4 is held in the end frame 5, the front area (projected area on a plane orthogonal to the output shaft 11) is suppressed to about the cross-sectional area of the motor 3. Further, the interlocking rod 6 is employed as a means for transmitting the driving force from the plunger 41 to the pinion moving body 1, and unlike the related art, the string-shaped member is not used. Has been prevented.

Therefore, according to the starter of the present embodiment, while the front area of the starter is suppressed to be small, the malfunction of the movement mechanism (in this embodiment, the interlocking rod 6) of the pinion moving body 1 by the plunger 41 of the magnet switch 4 is defective. Is prevented, so that the reliability of the starter is improved. Also, the interlocking rod 6 is not exposed to the outside,
The through hole for guiding the interlocking rod 6 to the outside is not formed in a member (housing 2, yoke 34, end frame 5) that forms the outer shape of the starter. Therefore, there is also an effect that muddy water and dust from the outside are prevented from entering the inside of the starter.

To summarize the above, according to the starter of this embodiment, the inconvenience in design due to the arrangement of the magnet switch 4 is eliminated, the operation failure of the pinion moving body 1 is reduced, and the intrusion of muddy water, dust and the like is prevented. This has the effect of being prevented. Secondly, a protrusion 35 is formed on the yoke 34 of the motor 3 between the field poles 37 adjacent to each other in the axial direction. Most of the intermediate portion 63 of the interlocking rod 6 is accommodated in the groove 36 of the projecting portion 35 of the yoke 34, and the intermediate portion 63 does not block the space between the field poles 37 adjacent to each other. Therefore, there is an effect that the intermediate portion 63 of the interlocking rod 6 does not hinder the cooling of the field magnetic pole 37 and does not magnetically affect the field.

Third, not only is the yoke 34 forming the protruding portion 35, but also the housing 2 and the end frame 5, which are respectively joined before and after the yoke 34, form the protruding portions 25 and 55, respectively. Yes. That is, groove 2
5, 35, and 55 are linearly continuous with each other, and the groove 26 of the projecting portion 25 of the housing 2 and the groove 56 of the projecting portion 55 of the end frame 5 have a part of the operating portion 62 of the interlocking rod 6 therebetween. A part of the actuated portion 64 is housed.

Therefore, the interlocking rod 6 can form a bar-shaped linear portion over the entire length of the yoke 34, and unlike the present embodiment, a structure in which the bearing 65 is fixed to the housing 2 or the end frame 5 is different from that of the present embodiment. It is advantageous when taking. In addition, the bending moment and the torsional moment applied to the operating portion 62 and the operated portion 64, which are located at a distance in the radial direction from the rotation axis of the intermediate portion 63, are reduced.
As a result, the weight of the interlocking rod 6 can be reduced.

Therefore, according to the starter of this embodiment, not only the arrangement of the interlocking rod 6 is facilitated, but also the weight of the interlocking rod 6 can be reduced. Fourth,
The magnet switch 4 is disposed to intersect the rotating shafts 11 and 31 vertically. As shown in FIG. 3 again, when the magnet switch 4 operates and the plunger 41 moves linearly, the actuated portion 64 engaged with the plunger rod 42
Are eccentric from the axis of the intermediate portion 63,
3 around the axis. Then, as shown in FIG. 4 again, the operating portion 62 of the interlocking rod 6 also rotates integrally, and the front end portion 6 formed in a spiral around the axis of the intermediate portion 63.
At 1, the pinion moving body 1 is pressed and moved forward.
As a result, the pinion gear 12 is protruded to a position where it meshes with the ring gear R of the engine (not shown).

Therefore, according to the present embodiment, since the magnet switch 4 is disposed perpendicular to the motor rotating shaft 31, the starter can be made more compact without increasing the total length of the starter so much. is there. Further, since the magnet switch 4 is housed in the end frame 5, there is an effect that the magnet switch 4 is also protected.

Fifth, there are two small-diameter portions 60 at the intermediate portion 63 of the interlocking rod 6, and each small-diameter portion 60 has a bearing 6.
5 supports the interlocking rod 6, and each bearing 65 is fixed to the groove 36 of the protrusion 35 of the yoke 34. Therefore, according to the starter of the present embodiment, since the intermediate portion 63 of the interlocking rod 6 is supported by the two bearings 65, the friction associated with the rotational movement of the interlocking rod 6 is small, and the rotation of the interlocking rod 6 is reduced. Become smooth. Further, the grooves 26, 36, 56 of the housing 2, the yoke 34 and the end frame 5 are provided.
There is a predetermined distance between the inner peripheral surface of the
Since they do not contact each other, the operation of the interlocking rod 6 is not hindered. Therefore, there is an effect that the operation of the interlocking rod 6 is smooth, and the reliability of the movement action of the pinion moving body 1 of the interlocking rod 6 is enhanced.

Sixth, since the material of the interlocking rod 6 is a non-magnetic stainless steel, the interlocking rod 6 is not subjected to a magnetic force due to an alternating and rapidly changing field magnetic field, and is vibrated by the field. Never even. Therefore, according to the starter of the present embodiment, the interlock rod 6 does not vibrate due to the magnetic field, and the interlock rod 6 does not collide with the surrounding members due to the vibration, so that a malfunction does not occur. There is an effect of doing.

(Modification 1 of Embodiment 1) As means for fixing the bearing 65 to the protruding portion 35, a screw 66 (FIG. 2B)
7), a modification employing welding as shown in FIG. 7 is also possible. In this modified embodiment, there is no need to cut a female screw into the bearing 65 and it is not necessary to align the holes of the bearing 65, so that the present starter can be manufactured at lower cost.

(Modification 2 of Embodiment 1) In Embodiment 1,
Although the bearing 65 is used as a means for holding the intermediate portion 63 of the interlocking rod 6 in the groove 36 of the projecting portion 35, a modified embodiment in which the interlocking rod 6 'is held directly by the groove 36' as shown in FIG. It is possible. In this modification, the inner diameter of the groove 36 'is smaller than that of the groove 36 of the first embodiment.
The inner peripheral surface of 6 'directly contacts the intermediate portion 63' of the interlocking rod 6 'with a clearance fit. The edge of the groove 36 ′ is slightly narrowed to form a tight fit, so that the intermediate portion 63 ′ of the interlocking rod 6 ′ does not fall out of the groove 36 ′. Groove 3
If the fastener 67 is welded to about two places by closing the opening of 6 ', the holding of the interlocking rod 6' will be more reliable.

In this modification, the interlocking rod 6 '
Since the small diameter portion 60 is not formed in the intermediate portion 63 'as shown in FIGS. 10A to 10C, the strength and rigidity of the interlocking rod 6' are improved, and the weight can be reduced. (Third Modification of First Embodiment) Instead of the configuration using the bearing 65 of the first embodiment, a modification in which an interlocking rod 6 ″ having no small-diameter portion 60 is employed is also possible.

In this modified embodiment, as shown in FIG. 9A, the intermediate portion 63 "of the interlocking rod 6" is supported at two places by bearings 65 ", respectively.
5 "are fixed to the inner peripheral surfaces of the front end and the rear end of the groove 36 of the projecting portion 35 of the yoke 34 by welding. On the intermediate portion 63", the opposite sides of the bearings 65 "are provided. Further, a thrust washer 65a and a circlip 65b as a retaining ring are provided.

In this modified embodiment, the intermediate portion 63 "of the interlocking rod 6" does not need a small-diameter portion.
The retaining rings 65a and 65b are fixed to the intermediate portion 63 "of the interlocking rod 6" adjacently in the axial direction. That is, the movement of the interlocking rod 6 "in the longitudinal direction is restricted by the action of the retaining rings 65a and 65b, and the position of the interlocking rod 6" is stabilized. Further, according to the present modification, since the small diameter portion is not formed on the interlocking rod 6 ", there is an effect that the interlocking rod 6" can be formed more lightweight and tough.

(Modification 4 of Embodiment 1) In addition to the protrusion 35 of Embodiment 1, the protrusion for accommodating the through bolt 7 is
Variations formed on the yoke and part of the housing and end frame are also possible. In this variation,
Since the through bolt 7 is not exposed to the outside, there is an effect that surface treatment such as rust prevention and handling by an operator become easy.

Alternatively, the same operation and effect can be obtained by a modification in which the through bolt 7 is passed between the field poles 37 adjacent to each other without providing the protrusion for the through bolt 7. (Modification 5 of Embodiment 1) The protrusion 35 is eliminated from the yoke 34 of Embodiment 1, and the interlocking rod 6 is provided between adjacent field poles 37 fixed to the inner peripheral surface of the pipe-shaped yoke. A modification in which the intermediate portion 63 is passed is also possible. In this modification, a slightly shallow recessed groove is formed on the inner peripheral surface of the yoke between the adjacent field magnetic poles 37 by cutting or the like so as to extend in parallel with the rotation axis.

(Modification 6 of Embodiment 1) In Modification 5 described above, in addition to the grooves through which the interlocking rods 6 pass, the mutually adjacent field magnetic poles 37 fixed to the inner peripheral surface of the pipe-like yoke. A modification in which a groove through which the through bolt 7 passes and a recess is also possible. This groove is also formed by cutting or the like, and no protrusion 35 is formed on the outer peripheral surface of the yoke. Half of the capacity of the through-bolt 7 under the neck is buried in this groove. The through bolt 7 is attached to the yoke 34
Similarly to the above, the groove makes up for the decrease in the thickness of the cylindrical wall of the yoke due to the groove, so that the function of the yoke as the magnetic flux line is not impaired. In addition, since the through bolt 7 is half-buried in the inner peripheral surface of the yoke, the space between the field poles 37 adjacent to each other is not blocked so much, and the air cooling action in the motor internal space is not impaired.

Further, in this modification, the through bolt 7 is not exposed outside the yoke. According to this modification, the outer peripheral surface of the yoke is almost completely formed of a cylindrical surface, and the starter is more compact. (Modification 7 of Embodiment 1) A modification (not shown) of a reduction type starter in which a planetary reduction gear or the like is provided between the rotation shaft 31 of the motor 3 and the output shaft 11 is also possible.

In this modification, the rotating shaft 31 of the motor 3 and the output shaft 11 are separate members, and rotate at different rotational speeds at a reduction ratio. Therefore, there is an effect that the starter can be further reduced in size and weight by providing the small-sized and high-output motor 3 that rotates at high speed. Embodiment 2 (Structure of Embodiment 2) As shown in FIG. 11, a starter according to Embodiment 2 of the present invention
The rotating shaft 31 of the motor 3 and the moving direction of the plunger 41 'are arranged in a direction parallel to each other. The magnet switch 4 'is provided with a magnetic coil 44 for driving the plunger 41'.
And a magnetic circuit member 45 ', a plunger 41 and a plunger rod 42' driven linearly.

A movable contact fitting 48 ′ is fixed to the rear end of the plunger 41.
The main switch is constituted by a fixed contact fitting 49 'fixed to the outer cylinder member 40 forming the cylindrical side surface of the above. The fixed contact fitting 49 is electrically connected to a terminal fitting 47 ′ protruding from the magnet switch 4. The terminal fitting 47 'can be disposed in any direction in terms of the arrangement of the starter.

The outer cylinder member 40 has a male thread cut on the outer peripheral surface of the head, and an end plate 53 'of the end frame 5'.
Cylindrical mounting portion 57 formed to project rearward from
Into the female thread cut on the inner peripheral surface of. Thus,
The magnet switch 4 'is fixed to the end frame 5. Since the mounting portion 57 is formed at a position that does not protrude from the outer peripheral surface of the motor 3, the front area of the starter does not increase due to the magnet switch 4 '.

On the other hand, the interlocking rod 6A is a linear round bar (made of non-magnetic stainless steel) having a predetermined length, and is formed continuously with the housing 2, the yoke 34 and the end frame 5 as in the first embodiment. In the grooves 26, 36, 56. The interlocking rod 6A is connected to the inner peripheral surface of the groove 26 of the housing 2 by the four holding members 68 at one location of the operating portion 62 ', two locations of the intermediate portion 63, and one location of the operated portion 64'. It is welded to the inner peripheral surface of the groove 56 of the frame 5, respectively. Each holding member 68 is a hollow cylindrical sliding member, and the interlocking rod 6A passed through the through hole thereof is
Each holding member 68 is slidably held in the longitudinal direction, and its sliding surface is coated with grease.

The actuated portion 64 of the interlocking rod 6A is welded to the tip of the plunger rod 42 'via a connecting member 82, which is a trapezoidal flat plate member. It moves in parallel with the movement. Also, the operating portion 62 'of the interlocking rod 6A
Are welded to a connecting member 82 which is a trapezoidal flat plate member. Similarly, the connecting member 82 and the cylindrical member 83 are integrally fixed to each other by welding. The inner peripheral surface of the cylindrical member 83 is fitted to the outer periphery of the cylindrical portion behind the outer member 13a of the clutch 13 by a clearance fit, and the front end surface of the cylindrical member 83 is the rear surface of the disk portion of the outer member 13a of the clutch 13. Is in contact with Grease is applied to a sliding surface between the cylindrical member 83 and the outer member 13a of the clutch 13.

(Assembly Procedure of Second Embodiment) Interlocking rod 6A
Is manufactured by being divided into front and rear portions with a connector 69 fixed in the middle of the intermediate portion 63 as a boundary. Connector 69
Have the effect of being naturally fitted and joined when butted against each other, and cannot be separated only by applying a pulling force. The assembling of the starter of this embodiment is performed by separately assembling the housing 2 in which the front half of the interlocking rod 6A is incorporated, the housing 2 in which the rear half of the interlocking rod 6A and the magnet switch 4 are incorporated, and the motor 3 separately. Begin.

First, the assembly of the housing 2 will be described. Prior to assembling the housing 2, the operating portion 62 'of the interlocking rod 6A, the connecting member 82, and the cylindrical member 83 are welded. At the same time, after passing the intermediate portion 63 'of the interlocking rod 6A behind the connecting member 82 through the holding member 68, one of the connectors 69 is joined and fixed to the rear end of the front half of the interlocking rod 6A. Thereafter, when assembling the pinion moving body 1 and the output shaft 11 into the housing 2, the cylindrical member 83
On the outer member 13a and the two holding members 68 with the grooves 2
6 is fixed to the front part and the rear part by welding, respectively.

At the same time, the end frame 5 is assembled. Prior to assembling the end frame 5, the operated portion 64 'of the interlocking rod 6A and the connecting plate 81 are welded to each other. Further, the interlocking rod 6 in front of the connecting plate 81
After passing A through the holding member 68, the other end of the connector 69 is joined and fixed to the front end of the rear half of the interlocking rod 6A. After the magnet switch 4 is fixed to the mounting portion 57 at the rear end of the end frame 5, the upper side of the connecting member 82 is welded to the tip of the plunger rod 42 projecting from the end plate 53 'into the internal space. Then, the connecting member 82 and the rear half of the interlocking rod 6A and the plunger rod 42 are fixed to each other, and the rear half of the interlocking rod 6A moves back and forth in conjunction with the plunger 41.

Lastly, in joining the housing 2 and the end frame 5 with the motor 3 interposed therebetween, one and the other of the above-mentioned connectors 69 are fitted to each other, and the front half and the rear half of the interlocking rod 6A are joined together. Connected and interlocking rod 6A
Are joined together. In this state, the housing 2 and the end frame 5 are fastened with through bolts 7 (not shown), and the assembly of the starter of this embodiment is almost completed.

(Effects of Embodiment 2) The starter of this embodiment is constructed as described above, and has the following functions and excellent effects. First, the axis of the plunger 41 of the magnet switch 4 is arranged parallel to the rotation shaft 31 of the motor 3. And the interlocking rod 6
A can move in parallel with the rotation axis 31 of the motor 3,
It is slidably held by the holding member 68. The actuated portion 64 of the interlocking rod 6A is engaged with the plunger rod 42, and the actuated portion 62 is connected to the connecting member 82 and the cylindrical member 8
3 is in contact with the pinion moving body 1. Therefore, when the magnet switch 4 is actuated and the plunger 41 projects forward, the plunger rod 42 and the connecting plate 81
Rod 6A joined at the actuated portion 64 through the
Also, the pinion moving body 1 is moved forward by the operating portion 62 while moving forward in parallel with the rotation shaft 31 of the motor 3. As a result, the pinion moving body 1 is pushed forward by the interlocking rod 6A and moves forward, and the pinion gear 12 projects and meshes with the ring gear R (see FIG. 1) of the engine (not shown), and the motor 3
The ring gear R is rotationally driven by the rotational force of, and the engine is started.

That is, in the starter of this embodiment, since the magnet switch 4 is disposed in parallel with the rotating shaft 31 of the motor 3, the interlocking rod 6A pushes the pinion moving body 1 by parallel movement to start the engine. . Therefore, as compared with the first embodiment in which the pinion moving body 1 is pushed through the rotation of the interlocking rod 6, the operation is simpler and the reliability is increased. Further, unlike the above-described first embodiment, the interlocking rod 6A is a linear round bar member, which is simple and has an effect that simplification and cost reduction can be achieved.

Secondly, the interlocking rod 6A is held by the holding members 68 so as to be slidable in the longitudinal direction at a total of four points, that is, two front and rear portions of the intermediate portion 63 and two front and rear end portions of the interlocking rod 6A. Have been. Therefore, the interlocking rod 6
Since A is supported by the holding member 68 at four places,
When the interlocking rod 6A that moves linearly slides, the holding member 6
8 and the linear sliding operation of the interlocking rod 6A becomes smooth. In addition, since any part of the interlocking rod 6A is not in contact with the inner peripheral surfaces of the grooves 26, 36, 56 at a predetermined distance, the operation of the interlocking rod 6A is not hindered. Therefore, there is an effect that the operation of the interlocking rod 6A is smooth and the reliability is further improved.

Third, the coupling between the pinion moving body 1 and the plunger rod 42 and the interlocking rod 6A is as follows.
The connecting member 82 and the connecting plate 81 having high rigidity are used, and the interlocking rod 6A is also supported at four places, so that it does not easily buckle. Therefore, even when excessive force is applied to the pinion moving body 1 rearward when the starter is used,
This has the effect that the rigidity is high and it is hard to break.

(Modification 1 of Embodiment 2) The above-described Embodiment 2
Then, the connecting plate 81 and the connecting member 82 are used to connect the interlocking rod 6A with the pinion moving body 1 and the plunger rod 42.
And a cylindrical member 83, but a simple configuration that does not employ them can be modified. In this modification, the interlocking rod 6B is a round bar member (made of non-magnetic stainless steel), and the intermediate portion 63 ″ is formed in a straight line without the small diameter portion 60 (see FIG. 5) and the connector 69. The portion 63 ″ is held at the front end and the rear end of the yoke 34 by a holding member 68 welded to the inner peripheral surface of the groove 36 of the yoke 34.

The operating portion 62 "of the interlocking rod 6B is bent upward in the middle, and the front end portion 61" of the operating portion 62 "is bent.
Is formed in an arc shape with a predetermined curvature, and is wound around a boundary between the disk portion and the cylindrical portion of the outer member 13a. On the other hand, the actuated portion 64 ″ of the interlocking rod 6B is bent upward in the middle from the middle, and has a bottomed cylindrical member 8 at its upper end.
4 is welded, and the tip of the plunger rod 42 is inserted into the same member and fixedly joined.

The procedure for assembling the starter according to the present modified embodiment is as follows. First, a straight round bar member is passed through the two holding members 68, and then the bent portion is formed into the above-described shape.
The bottomed cylindrical member 84 is welded to the end face of the 4 ″
B. Then, the holding member 68 is connected to the groove 36 of the yoke 34.
Are welded to the inner peripheral surfaces of the front end and the rear end of the
, The interlocking rod 6B is slidably held back and forth. Thereafter, the end frame 5 is joined to the motor 3. At this time, the tip of the plunger rod 42 is inserted into a hole opened behind the bottomed cylindrical member 84 and joined. together,
The pinion moving body 1 and the housing 2 in which the output shaft 11 is inserted are joined to the motor 3. At this time, if the front end portion 61 of the interlocking rod 6B is engaged with the outer member 13a of the pinion moving body 1, Assembly is complete.

In the present modification, the man-hour for bending the interlocking rod 6B is required, but no member other than the bottomed cylindrical member 84 is employed for the connection between the pinion moving body 1 and the plunger rod 42. Therefore, the structure of the interlocking rod 6B and its surroundings is extremely simple, the parts cost is low, and the number of assembling steps is small, so that a starter having the same effects as those of the first and second embodiments can be provided at lower cost. This has the effect. Further, the bent interlock rod 6B has low rigidity due to spring elasticity, and can be flexibly deformed under an excessive load to avoid destruction. In addition, since there are few joints such as welding, there is an effect that failure is unlikely to occur.

(Other Modifications of Embodiment 2) Embodiment 2
The combination of the actuating portion 62 'of the interlocking rod 6A and the actuated portion 64 "of the interlocking rod 6B of the first modification thereof makes it possible to form a modification in which the interlocking rod is constituted. A combination of the actuated portion 64 'of the second interlocking rod 6A and the actuation portion 62 "of the interlocking rod 6B of the first modification thereof can also be modified to form an interlocking rod.

Further, modifications corresponding to modifications 4 to 7 of the first embodiment are also possible for the second embodiment, and the same operation and effect can be obtained. Third Embodiment (Overall Configuration of Third Embodiment) A starter according to a third embodiment includes:
As shown in FIG. 13, the second embodiment differs from the first embodiment in that a planetary speed reducer 70 that reduces the rotation of the rotating shaft 31 and transmits the rotation to the output shaft 11 and a pinion rotation restricting member 9 are provided. With the provision of the planetary speed reducer 70, the housing 2C that houses the planetary speed reducer 70 is slightly different in shape from the housing 2 of the first embodiment. Along with the provision of the pinion rotation restricting member 9, a pinion uneven portion 15 is formed on the pinion moving body 1C, and the operating portion 6 of the interlocking rod 6C is formed.
The shape of 2C or the like is different from the above-described embodiments and the like.

The rotor (armature) 32A is also
The upper coil and the lower coil connected to each other by welding at both ends are held on the outer periphery of the armature iron core, which is different from the first and second embodiments. The starter according to the present embodiment has substantially the same configuration as that of the first embodiment except for the above points.

(Structure and Operation of the Planetary Reducer of the Third Embodiment) The planetary reducer 70 has a sun gear 71 formed at the tip of the rotating shaft 31 of the motor 3 and a plurality of sun gears 71 meshing with the sun gear 71 from the periphery. It has a planetary gear 72 and an internal gear 73 that meshes with the planetary gear 72 from around the periphery thereof. The internal gear 73 is
The outer peripheral surface abuts and is fixed to the inner peripheral surface of the housing 2C. The planet gear 72 is rotatably supported by a planet gear shaft 74a fixed to the flange 74, and the flange 74 rotates integrally with the output shaft 11. Planetary reducer 70
Is a center case 75 fixed to the housing 2C.
At its front end, and also at its rear end against a plate 76 similarly fixed to the housing 2C.
In a predetermined position.

In the planetary speed reducer 70, when the rotating shaft 31 of the motor 3 rotates, the sun gear 71 rotates and the planetary gear 72 is driven to rotate and revolve in the internal gear 73, and the orbital movement of the planetary gear 72 is transmitted through the flange 74. To rotate the output shaft 11. (Structure and Operation of Interlocking Rod and Pinion Rotation Restricting Member of Third Embodiment) The plunger 41, the interlocking rod 6C and the pinion rotation restricting member 9 are engaged with each other in order as shown in FIG.

That is, as in the first embodiment, the end of the actuated portion 64 of the plunger rod 42 of the plunger 41 and the actuated portion 64 of the interlocking rod 6C
It is inserted into and engaged with the second engagement hole 43. The intermediate portion 63 of the interlocking rod 6C is rotatably held at two locations by bearings 65 '. The bearing 65 'is the same as that shown in FIG.
Are fixed to the groove 26 of the housing 2C and the groove 56 of the end frame 5, respectively, but may be fixed to the front end portion and the rear end portion of the groove 35 of the yoke 34 in consideration of an assembling procedure and the like. Good. The interlocking rod 6C is again
As shown in FIG. 3, the front and rear bends 6a and 6b are bent at right angles, and when each of the bends 6a and 6b is slightly moved back and forth, the end of the groove 26 and the end of the groove 56 form a housing. 2
The inner wall surface of C and the inner wall surface of the end frame 5 are in contact with each other. Therefore, the position of the interlocking rod 6C in the front-rear direction is limited to a predetermined range without separately preparing a member such as a retaining ring.

As shown in FIG. 14 again, the operating portion 62C of the interlocking rod 6C has a front end portion 61C formed by bending the front end, and the contact portion of the pinion rotation restricting member 9 is formed by the front end portion 61C. 91 are engaged. As shown in FIGS. 13 and 14 again, the pinion rotation restricting member 9 includes a ring member 92, a contact member 91, and a locking member 93. The ring member 92 is connected to the housing 2C.
Inside the output shaft 11 at appropriate intervals,
This is a ring-shaped member that is held by a spring (not shown) so as to be movable in a substantially vertical direction. The contact member 91 is
It is a rod-shaped member of a predetermined length, which is welded to the vicinity of the lower end of the ring member 92 and protrudes forward, and is engaged with the operating portion 62C of the interlocking rod 6C. The locking member 93 is a rod-shaped member that is bent slightly inward in a crank shape, and is welded near the upper end of the ring member 92 and protrudes forward.

When the magnet switch 4 is actuated and the plunger 41 is attracted in the direction of arrow I, the end of the actuated portion 64 is pulled up together with the plunger rod 42 as in the first embodiment, and 6C tilts in the direction of arrow I. Then, the operating portion 62C also tilts in the direction of the arrow I, and the engaged contact member 91 is pressed by the operating portion 62C and moves. As the operating portion 62C moves, the pinion rotation restricting member 9 is displaced in the direction of arrow D, and the locking member 93 is pulled substantially downward as shown in FIG. 14 again.

As a result, as shown in FIG. 13 again, the locking member 93 is fitted into the concave portion of the pinion concave and convex portion 15 of the pinion moving body 1, and the pinion moving body 1 is rotated regardless of the rotation of the output shaft 11. Regulate rotation. Then, the spline 11 a formed on the outer peripheral surface of the output shaft 11 meshes with the inner peripheral surface of the pinion moving body 1, and a force for pushing the pinion moving body 1 forward strongly is generated. Thus, the pinion moving body 1
Moves forward by the force generated by the spline 11a, meshes with a ring gear R (not shown) of the engine (not shown), and drives the ring gear R to rotate to start the engine.

(Effect of Third Embodiment) In this embodiment, the displacement of the magnet switch 4 due to the attraction force applied to the plunger 41 is transmitted to the pinion rotation restricting member 9 via the interlocking rod 6C. Then, since the pinion rotation restricting member 9 restricts the rotation of the pinion moving body 1, a force for pushing the pinion moving body 1 forward is generated by the action of the spline 11a formed on the rotating output shaft 11, and as a result, the pinion The moving body 1 moves forward. That is, the pinion moving body 1, whose rotation is restricted by the pinion rotation restricting member 9, does not directly push out the pinion moving body 1 by the contact of the interlocking rod 6 </ b> C, but the rotational force of the output shaft 11 by the action of the spline 11 a. It is pushed forward strongly by.

Therefore, the amount of work (suction force × stroke) of the plunger 41 is only necessary to act on the pinion rotation restricting member 9, and the amount of work required to directly push out the pinion moving body 1 is plunger. Not required for 41. As a result, the output of the magnet switch 4 may be smaller than that of the first and second embodiments, and the small and light magnet switch 4 may be provided. Further, since the work to be transmitted by the interlocking rod 6C is also reduced, the interlocking rod 6C can be reduced in size and weight.

As described in detail above, according to the starter of this embodiment, in addition to the same effects as those of the first and second embodiments, there is an effect that the size and weight of the starter can be further reduced. . (Modification of Third Embodiment) Similar to the use of the pinion rotation restricting member 9 in the third embodiment, a pinion rotation restricting member (not necessarily the same shape as in the third embodiment) is provided.
A modification in which a flexible wire with a tube is provided instead of the interlocking rod 6C is also possible.

In this modification, the displacement of the plunger 41 is transmitted to the pinion rotation restricting member by the flexible wire, so that the same operation as in the third embodiment can be obtained. Usually, since the flexible wire is lightweight and inexpensive and the assembling work is easy, according to this modification, there is an effect that the starter of the present invention can be further reduced in weight and can be provided at lower cost.

(Various Modifications of Embodiment 3) Modifications corresponding to most of the modifications of Embodiments 1 and 2 are possible for this modification, and the same operation and effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a configuration of a starter according to a first embodiment.

FIGS. 2A and 2B are assembly diagrams illustrating a configuration of a motor and an interlocking rod bearing according to the first embodiment. FIG. 2A is an end view along a rotation surface of the motor. FIG.

FIG. 3 is an end view showing the configuration and operation of the device in the end frame according to the first embodiment;

FIG. 4 is an end view showing the configuration and operation of the device in the housing according to the first embodiment;

FIG. 5 is an assembled view showing a three-dimensional shape of the interlocking rod according to the first embodiment; (a) a plan view; (b) a side view; (c) a front view (c);

FIG. 6 is a partial cross-sectional view illustrating a fitting structure of the interlocking rod and the bearing according to the first embodiment.

FIG. 7 is a partial cross-sectional view illustrating a mounting structure of a bearing according to a first modification of the first embodiment;

FIG. 8 is a partial cross-sectional view showing a mounting structure of an interlocking rod according to a first modification of the first embodiment;

FIG. 9 is a set diagram showing a configuration of a motor and an interlocking rod according to a third modification of the first embodiment; (a) a side cross-sectional view showing the entire configuration of the starter;

FIG. 10 is a set diagram showing a three-dimensional shape of an interlocking rod according to a third modification of the first embodiment; (a) a perspective view; (b) a plan view; and (c) a side view.

FIG. 11 is a side sectional view showing a configuration of a starter according to a second embodiment.

FIG. 12 is a side sectional view showing a configuration of a starter as a first modification of the second embodiment;

FIG. 13 is a side sectional view showing a configuration of a starter as a third embodiment;

FIG. 14 is a perspective view illustrating a configuration of a main part of a third embodiment.

[Explanation of symbols]

1, 1A: Pinion moving body 11: Output shaft 11a: Torsion spline 12: Pinion gear 13: One-way clutch 13a: Outer member 14: Retainer washer 15: Pinion uneven portion 2, 2C: Housing 21: Front end 22: Joint 23: Cylindrical part 2
4: Rear end 25: Projection 26: Groove 27: Bearing 28: Return spring 3: Motor 31: Rotating shaft 32: Rotor (armature) 34: Yoke (yoke) 35, 35 ': Projection 3
6, 36 ': groove 37: field magnetic pole 4, 4': magnet switch 41, 41 ': plunger 42, 42': plunger rod 43: engagement hole 44: magnetic coil 45, 45 ':
Magnetic circuit member 46, 46 ': Return spring 47, 47':
Terminal fittings 48, 48 ': Movable contact fittings 49, 49': Fixed contact fittings 40: Outer cylinder member 5: End frame (rear lid) 51: Front end 52: Cylindrical part 53: End plate 54: Terminal case 55: Projection Part 56: groove 5
7: mounting portion 6, 6 ', 6 ", 6A, 6B, 6C: interlocking rod 60: small diameter portion 6a: front end bent portion 6b: rear end bent portion 61, 61", 61C: front end portion 62, 62', 62 ", 62C: Actuating portion 63, 63 ', 63": Intermediate portion 64, 64', 64 ": Actuated portion 65, 65 ', 65": Bearing 65a: Thrust washer 65b: Circlip (retaining ring) 66 : Screw 67: Fastener 68: Holding member 6
9: Connector 7: Through bolt (a non-magnetic material is good or a soft magnetic material is good) 70: Planetary reducer 71: Sun gear 72: Planetary gear 73: Internal gear 74: Flange 74a: Planetary gear shaft 75: Center case 81: Connecting plate 82: Connecting member 83: Cylindrical member
84: Bottomed cylindrical member 9: Pinion rotation restricting member 91: Contact member 92: Ring member 93: Locking member D: Displacement direction (displacement of pinion rotation restricting member) I: Rotational movement or tilting of interlocking rod L: Plunger Linear motion F: Flywheel R: Ring gear W: Welding

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location F02N 15/02 F02N 15/02 H

Claims (9)

[Claims] A motor having a yoke in which a plurality of field magnetic poles are circumferentially arranged on an inner peripheral surface, and a rotor rotatably provided surrounded by these field magnetic poles; An output shaft rotatably driven by the motor; a pinion moving body having a pinion gear that is slidably engaged with the output shaft in the axial direction and can mesh with a ring gear of the engine; A magnet switch having a plunger that is attracted to the exciting coil by being energized by the exciting coil; an actuated part that engages with the plunger; and an actuating part that moves the pinion moving body to the ring gear side. ,
And an interlocking rod having a rod-shaped intermediate portion connecting the operated portion and the operating portion, wherein at least a part of the intermediate portion of the interlocking rod extends in the axial direction of the inner peripheral surface of the yoke. A starter which is housed in a recessed groove. 2. A groove corresponding to the groove on the inner peripheral surface of the yoke, the housing having a housing that rotatably supports the output shaft at one end thereof, the housing and the rear lid of the motor. 2. A part of the operating part of the interlocking rod is accommodated in a groove of the housing, and a part of the actuated part is accommodated in a groove of the rear lid. Starter. 3. The magnet switch is disposed in a direction in which a rotation axis of the rotor of the motor and a moving direction of the plunger are substantially perpendicular to each other. The actuated portion of the interlocking rod is engaged with the plunger at a position separated from the axis of the intermediate portion by a predetermined distance, and the movement of the plunger is The working part of the interlocking rod has a helical front end having a lead in the axial direction about the axis of the intermediate portion, and the shaft of the intermediate portion is converted into a rotational movement around the axis of the intermediate portion. 2. The starter according to claim 1, wherein the front end rotates around the center to press and move the pinion moving body with which the front end contacts. 4. The intermediate portion of the interlocking rod has at least two small-diameter portions smaller in diameter than an adjacent portion, and the interlocking rod is formed by a bearing fitted to each of the small-diameter portions. 4. The starter according to claim 3, wherein each of the bearings is fixed to an inner peripheral surface of any one of the yoke, the housing, and the rear lid. 5. 5. The intermediate portion of the interlocking rod is supported by bearings at at least two places, and each of the bearings is an inner peripheral surface of one of the yoke, the housing, and the rear lid. 4. The starter according to claim 3, wherein a retaining ring is fixed to the intermediate portion adjacent to the bearing in the axial direction. 6. The magnet switch is disposed in a direction in which a rotation axis of the rotor of the motor and a moving direction of the plunger are substantially parallel to each other, and the interlocking rod is configured to rotate the rotation of the rotor. The movable part of the interlocking rod is held so as to be movable in parallel with an axis, the operated part is engaged with the plunger, and the operating part is in contact with the pinion moving body. The starter according to 1. 7. The intermediate portion of the interlocking rod is held at at least two positions by a holding member so as to be slidable in the longitudinal direction, and each of the holding members is the yoke, the housing, and the rear lid, respectively. 7. The starter according to claim 6, wherein the starter is fixed to any one of the inner peripheral surfaces. 8. The starter according to claim 1, wherein said interlocking rod is made of non-magnetic stainless steel. 9. A pinion rotation restricting member which is connected to said operating portion of said interlocking rod, engages with a part of said pinion moving body by displacement of said operating portion, and restricts rotation of said pinion moving body. The starter according to claim 1, wherein the pinion moving body is engaged with a torsion spline formed on the output shaft.