CN1786460B

CN1786460B - Starter

Info

Publication number: CN1786460B
Application number: CN2005100528827A
Authority: CN
Inventors: 楠本启一; 山内逸人; 木村元昭
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2004-12-08
Filing date: 2005-02-25
Publication date: 2011-09-21
Anticipated expiration: 2025-02-25
Also published as: KR20060064442A; CN1786460A; KR100673197B1; JP2006161724A

Abstract

To obtain a starter having smooth engagement or disengagement of a pinion gear and a ring gear, and a smooth transferring of a clutch by reducing partial wear of a shift piece. The starter of the present invention is equipped with a motor 1, an electromagnetic switch 2, a clutch 5, a shift lever 7 having a straddling part 22, and the shift piece 25 provided rotatably on both ends of the straddling part 22 and engaged in a groove part 21 formed on the outer periphery of a clutch housing 17 of the clutch 5. In the starter, the shift lever 7 rotates in a seesaw motion interlocking with the reciprocating action of a plunger 9, and by the reciprocation of the clutch 5 interlocking with the rotating seesaw motion of the shift lever 7, the pinion gear 18 is engaged/disengaged with the ring gear. The shift piece 25 is a flat plate having a rectangular shape, and the diagonal length of the plate is shorter than the axial width of the groove part 21.

Description

Starter

Technical field

The present invention relates to that reciprocating action interlock, movement rod with the plunger of magnetic switch resembles that seesaw (seesaw) sample rotates, small gear (pinion) and ring gear (ring gear) engagement or the starter that breaks away from.

Background technique

In the past, people know a kind of starter, the reciprocating action interlock of the plunger of it and magnetic switch, and movement rod resembles the seesaw sample and rotates, small gear and ring gear engagement or disengaging (for example, with reference to patent documentation 1).

In the case, the cross-over connection portion of movement rod is on clutch (clutch), be arranged on the rotatable moving block (shift piece) at the two end part of cross-over connection portion, engage with the slot part that forms along the circumferencial direction of clutch housing (clutch housing) outer circumferential face, follow the rotation of movement rod, move clutch by moving block, make engagement of small gear and ring gear or disengaging.

The real public clear 48-31766 communique of [patent documentation 1] Japan Patent

In the starter of above-mentioned structure, because moving block is the flat board that is rectangle, cornerwise length dimension of this flat board, longer than the width dimensions that slot part is axial, so, the bi-side of moving block are collided, are pushed repeatedly with respect to the wall of slot part, two corner portion of the plunger opposition side of moving block for example, often produce the many especially situations of wearing and tearing, because this eccentric wear decreases, moving block will hang on the wall of slot part, hinders the slyness of clutch to move, so exist the engagement of small gear and ring gear or break away from the problem that can not slick and sly carry out.

Summary of the invention

Purpose of the present invention just is that to address the above problem a little be problem, even eccentric wear for example occurs and decrease the shape also be unlikely to hang on the slot part wall by the shape of moving block is made, thus obtain the engagement of a kind of small gear and ring gear or break away from can both slick and sly carry out and clutch move also the starter that can slyness carry out.

Starter of the present invention, it possesses 1. motor is arranged, the magnetic switch of using 2. for this motor break-make power supply, 3. clutch that can be reciprocating when the rotating force with above-mentioned motor is delivered to small gear with the engagement of the ring gear of internal-combustion engine with respect to ring gear, 4. an end engages with the plunger of above-mentioned magnetic switch and has and is divided into two strands of movement rods that are connected across the cross-over connection portion of above-mentioned clutch, 5. can be rotatably set in the two end part of above-mentioned cross-over connection portion and the moving block that engages with slot part that circumferencial direction along the clutch housing outer circumferential face of above-mentioned clutch forms, the reciprocating action interlock of above-mentioned movement rod and above-mentioned plunger, picture seesaw sample rotates, by the reciprocating action of the above-mentioned clutch of seesaw rotation interlock therewith, make engagement of above-mentioned small gear and above-mentioned ring gear or disengaging, it is characterized in that, above-mentioned moving block is a flat board of making rectangle, and cornerwise length dimension that should flat board width dimensions more axial than above-mentioned slot part is short.

Adopt starter of the present invention, decrease even if eccentric wear appears in moving block, the phenomenon on the slot part also can not occur hanging over, so the mobile of clutch can keep slick and sly, the engagement of small gear and ring gear or disengaging also can realize slynessization.

Description of drawings

Fig. 1 is that the starter that expression is made based on the invention process form 1 is wanted the sectional view of portion.

Fig. 2 is the plan view of the movement rod of presentation graphs 1.

Fig. 3 is the plan view of the moving block of presentation graphs 1.

Fig. 4 is the plan view of the moving block in the expression example 2.

Fig. 5 is the plan view of the moving block in the expression example 3.

Embodiment

Below, by accompanying drawing various example of the present invention is described.In each example,, all add prosign and describe same member or quite member, position.

[example 1]

This starter has: 1. motor 1,2. give the magnetic switch 2 of motor 1 break-make power supply, 3. transmit the power transmission mechanism portion 4 of the rotating force of motor shaft 3, the overrunning clutch 5 that 4. is connected with this power

transmission mechanism portion

4,5. be crossed on the movement rod 7 that makes clutch 5 reciprocating between this clutch 5 and the magnetic switch 2,6. can slide with the small gear 18 of spline combination to axial direction in the end of the pinion shaft 14 of clutch 5.

In above-mentioned magnetic switch 2, the plunger 9 that connects with the movable core (not shown) is one side-prominent by housing 8.This plunger 9, by to the energising of the coil (not shown)s in the housing 8 by excitation, and the movable core interlock of drawing with the (not shown) side draught unshakable in one's determination that is fixed.

In above-mentioned power transmission mechanism portion 4, on motor shaft 3, be provided with central gear 10.Round this central gear 10, be provided with internal gear 11.Between central gear 10 and internal gear 11, in connect central gear 10, external internal gear 11 planetary pinion 12 at circumferencial direction several are set equally spaced.On the central shaft of each planetary pinion 12, an end of planet pin 13 rotatably connects.In the other end of planet pin 13, extend with central axis, the wall of pinion shaft 14 carries out spline and combine along pinion shaft 14.

In above-mentioned clutch 5, at the periphery circumferencial direction of pinion shaft 14, separated by a certain interval a plurality of clutch rollers 15 are set.An end face of the axial direction of each clutch roller 15 is hidden by clutch cover 16, and in addition, the side face of each clutch roller 15 is hidden by clutch housing 17.

Fig. 2 is the plan view of the movement rod 7 of presentation graphs 1.

Support to rotation movement rod 7 freely with fulcrum 20, its end is stuck close in a pair of flange plate 19a of the end formation of movable core 9, between the 19b.

This movement rod 7 is to be made of the pair of plate-shaped member that is symmetrically formed with minute surface mutually, has to be divided into two strands, the cross-over connection portion 22 of bridging clutch 5.Underpart in cross-over connection portion 22 forms pair of holes 23 relative to each other.

In this hole 23, insert the protuberance 24 of moving block 25, moving block 25 is rotatable with respect to movement rod 7.

The moving block 25 usefulness sintering metal methods of forming are made, and as shown in Figure 3, form the oblong-shaped of rectangle.Size A on the diagonal of moving block 25 is shorter than the size B of the axial direction between wall 21a, the 21b of the slot part 21 of clutch housing 17.

Secondly, the action of the starter of said structure is described.

If the key switch (not shown) is connected, coil just is energized, excitation, because movable core is attracted to fixed iron core one side, plunger 9 just moves to the left of Fig. 1.In the moving of this plunger 9, movement rod 7, with fulcrum 20 is the center, resembling the seesaw sample rotates, the cross-over connection portion 22 of movement rod 7 is towards counterclockwise rotation, after the wall 21a of small gear 18 sides of the side of small gear 18 sides of moving block 25 and slot part 21 collided, clutch 5 was released in Fig. 1 to the right, small gear 18 and the engagement of ring gear (not shown).

At this moment, magnetic switch 2 actions, motor 1 drives, motor shaft 3 rotations.Be accompanied by the rotation of motor shaft 3, on one side planetary pinion 12 is that center rotation is on one side revolved round the sun with central gear 10.Be accompanied by the revolution of planetary pinion 12, planet pin 13, pinion shaft 14 and small gear 18 rotations are with the ring gear rotation in small gear 18 engagements, cranking internal combustion engine.

Then, if key switch disconnects, the "on" position of coil is cut off, and movable core breaks away from from fixed iron core, and plunger 9 is outstanding from housing 8, and movement rod 7 is the center with fulcrum 20, makees seesaw and rotates, and the cross-over connection portion 22 of movement rod 7 rotates along clockwise direction.The side of small gear 18 opposition sides of the moving block 25 of continuation traction, after the wall 21b of collision slot part 21, clutch 5, small gear 18 move to the direction of leaving annular gear wheel, and small gear 18 is disengaged with the engagement of ring gear.

The starter of making by the example 1 of said structure, moving block 25 is to make OBL flat board, the bi-side of moving block 25 are with respect to wall 21a, the 21b collision of slot part 21, be urged repeatedly, though on moving block 25, produce wearing and tearing, but, hang over the last such state of affairs of wall 21a, 21b of slot part 21 so can prevent to result from eccentric wear, moving block 25 because cornerwise length dimension A of this flat board is shorter than the size B between wall 21a, the 21b of slot part 21.For this reason, clutch 5 can move sleekly, and small gear 18 can slynessization with the engagement or the disengaging of ring gear.

In addition, moving block 25 so in order to obtain the protuberance of moving block, compare with the cutting product, can produce moving block 25 because the sintering metal moulding is made cheaply.

[example 2]

Fig. 4 is the plan view of the moving block 25 in the expression the invention process form 2, and in the case, except the shape of moving block 25 was rectangular square shape this point, other formations were identical with example 1.

In the case, because cornerwise length dimension A is also shorter than the size B between wall 21a, the 21b of slot part 21, so can obtain the effect same with above-mentioned example 1, simultaneously, in the case, directivity when bar 7 is not assembled because moving block 25 relatively moves is so assembling is easy to.

[example 3]

Fig. 5 is the plan view of the moving block 25 in the expression the invention process form 3, and in the case, except the shape of moving block 25 is to be roughly the square shape this point, other formations are identical with example 1.

In the case, because cornerwise length dimension A is also shorter than the size B between wall 21a, the 21b of slot part 21, so can obtain the effect same with above-mentioned example 1, simultaneously, in the case, directivity when bar 7 is not assembled because moving block 25 relatively moves is so be easy to above-mentioned example 2 same assemblings.

In addition, under the situation of this moving block 25, corner portion is to be curve form, so the face drops when corner portion collides wall 21a, the 21b of slot part 21 correspondingly also has the effect that is difficult to produce wearing and tearing.

Claims

1. starter, have: 1. motor, the magnetic switch of using 2. for this motor break-make power supply, 3. clutch that can be reciprocating when the rotating force with described motor is delivered to small gear with the engagement of the ring gear of internal-combustion engine with respect to ring gear, 4. an end engages with the plunger of described magnetic switch and has and is divided into the movement rod of two bursts of cross-over connections in the cross-over connection portion of described clutch, 5. the moving block that can be rotatably set on the two end part of described cross-over connection portion and engage with slot part that outer circumferential face circumferencial direction along the clutch housing of described clutch forms

The reciprocating action of described movement rod and described plunger interlock resembles the seesaw sample and rotates, and rotates the reciprocating action of the described clutch that links by seesaw therewith, makes engagement of described small gear and described ring gear or disengaging, it is characterized in that,

In this starter, when described movement rod resembles the rotation of seesaw sample, with respect to the collision of the wall of slot part, described moving block is made the flat board of rectangle respectively in the bi-side of described moving block, and cornerwise length dimension that should flat board width dimensions more axial than described slot part is short.

2. the starter of putting down in writing as claim 1 is characterized in that, described moving block is a square shape roughly.

3. the starter of putting down in writing as claim 1 or claim 2 is characterized in that described moving block makes with the sintering metal forming method.