CN1155780A

CN1155780A - Rotor of magnetic generator

Info

Publication number: CN1155780A
Application number: CN96121536A
Authority: CN
Inventors: 渡边敏幸
Original assignee: MITUHA CO Ltd
Current assignee: MITUHA CO Ltd; Mitsuba Corp
Priority date: 1995-12-15
Filing date: 1996-12-12
Publication date: 1997-07-30
Anticipated expiration: 2016-12-12
Also published as: KR970055101A; TW358256B; KR100436042B1; ITTO961028A1; FR2742603B1; CN1094672C; IT1289751B1; JPH09172754A; FR2742603A1; IN191773B

Abstract

The object of the invention is to reduce the diameter of the boss member flange of a magnetic generator with a clutch-outer. A boss member is inserted from outside into a boss member attaching opening in the bottom wall of a yokeand fixed by a buckling calking part to form a male faucet part on the flange of the boss member. A female faucet part formed in a clutch-outer is coupled with the male faucet part of the boss member by faucet-coupling and, further, a protrusion provided on the bottom wall of the yoke is coupled with a recess provided in the clutch-outer which is fixed to the bottom wall of the yoke by bolts. With this constitution, as the bolts are not screwed into the flange of the boss member, the diameter of the flange of the boss member can be reduced and the manufacture cost can be reduced.

Description

The rotor of magneto

The present invention relates to a kind of rotor of magneto, more particularly, relate to a kind of improvement that is used for yoke is fixed on the structure on the outer part (clutch outer) of clutch of one-way clutch, and relevant with the rotor that is used for following magneto effectively, the engine of this magneto and for example two-wheeled motor vehicle etc. is connected to each other.

With normally a kind of like this magneto of the interconnected magneto of engine of two-wheeled motor vehicle etc., comprising: a rotor wherein, is provided with and is fixed with a plurality of magnet by fixing interval on the inner periphery surface of bowl-type yoke; And an armature, wherein, the armature coil with the salient pole that radially is provided with is highlightedly arranged in the yoke of rotor with one heart: armature is fixed on the outside framework of engine, and rotor is linked to each other with the rotating shaft of engine.In this magneto, rotor is by being rotated around armature by the rotation of engine-driven rotating shaft, and magnet then relatively moves in the magnetic field of armature coil, so just can induce electromotive force in armature coil.

In aforesaid magneto, rotor is fixed in the rotating shaft of engine, and is conical and uses keyed engagement with boss member that the diapire of yoke is connected with one heart, and is fastening with nut, thereby fixes.Therefore, as the structure that the boss member and the diapire of yoke are connected with one heart, usually adopt a kind of like this structure, promptly on the neighboring of an end of boss member, integrally and highlightedly be provided with a flange, and the other end of boss member is inserted under the state in the opening that forms on the yoke diapire from the outside, adopts a plurality of rivets that the diapire of flange and yoke is interconnected with one another.

Now, by and in the engine of design, owing to need after starting, starting motor and engine be disconnected, so between the rotating shaft of engine and starting motor, an one-way clutch to be set with starting motor starting.As magnetic engine being connected in by the structure on the engine of starting motor starting by this one-way clutch, for example described in Japanese Utility Model communique NO.170529/1980 like that, a kind of like this structure is arranged, and the outer part of clutch wherein leans against on the boss member of magnetic power generator machine rotor and by being bolted on yoke diapire and the boss member.

In addition, in Japanese patent gazette NO.175152/1991, proposed a kind of structure, wherein, the yoke and the boss member of magnetic power generator machine rotor have been made an integral body, and the outer part of clutch has been fastened on the outer surface of yoke diapire by bolt.

But, part is by in the structure of bolted on yoke diapire and boss member outside clutch, owing to must directly be connected in the outer part of clutch in the rotating shaft, therefore, requirement has the flange of the boss member of high mechanical strength should have big diameter, like this, the manufacturing cost that the boss member just occurs increases, thereby just makes the problem of the manufacturing cost increase of magneto.Moreover, boss member and yoke to be made in the holistic structure, manufacturing cost increases very manyly.

In addition, in traditional epitrochanterian structure that one-way clutch is connected in magneto, opposite side at rotor, part opening part is provided with lid and the fixed component in order to prevent that the clutch roller from dropping out outside clutch, therefore, when making one-way clutch, have to make and add number and the tendency that increases of number of spare parts in man-hour.In addition,, should adopt large-scale broaching machine, just need to adopt special large corporation thus in order to form the cam contour of one-way clutch on the inner periphery surface of part outside clutch.

The object of the present invention is to provide a kind of rotor of magneto, it can reduce the diameter of the flange of the boss member that is connected with the diapire of yoke.

Being characterized as of magnetic power generator machine rotor of the present invention, on the neighboring of the flange of the boss member that the diapire with the bowl-type yoke links to each other, form an insertion portion, it is embedded in the socket part that forms on the inner rim of the outer part of clutch of one-way clutch, thereby become bell and spigot joint, and a bump bonds that will be outside yoke diapire and clutch be provided with highlightedly in the part is being arranged in the groove on another of part outside yoke diapire and the clutch.

The plug portion that is formed by the neighboring of the flange of boss member is inserted in the socket part that forms on the opening of an end of part outside clutch by bell and spigot joint, thereby make the outer part of clutch be in the state of accurately aiming at each other with rotating shaft in being bonded on the boss member, make like this clutch internals that are bonded in the rotating shaft and clutch outward part be in the state of accurately aiming at each other.In addition, the outer part of yoke diapire and clutch is connected to one another by projection and groove, can prevent reliably that thus the outer part of clutch is with respect to rotor rotation.Like this, just need be at the flange of boss member from the internal thread hole that not be formed for connecting part and rotor outside the clutch on one's body, it is undersized that the external diameter of the flange of boss member is set for, thereby make the boss member thereby the manufacturing cost of magnetic power generator machine rotor is reduced.

Can be more clear and understand above-mentioned purpose of the present invention and other purpose and new feature all sidedly according to the following description of carrying out with reference to accompanying drawing.

Fig. 1 is an exploded perspective view, shows the rotor as the magneto of one embodiment of the present of invention;

Fig. 2 is the confined state of rotor shown in Figure 1, and Fig. 2 (a) is a front section view, and Fig. 2 (b) is the side sectional view along the intercepting of the b-b line among Fig. 2 (a); And

Fig. 3 represents confined state, and Fig. 3 (a) is an end view, and Fig. 3 (b) is the partial sectional view along the intercepting of the b-b line among Fig. 3 (a).

In the present embodiment, to so construct, integrally be contained on the rotor with outer part and clutch roller with one-way clutch according to the rotor of magneto of the present invention.This rotor 10 comprises the boss member of always receiving in succession on the unshowned alternator shaft 11, and this boss member 11 forms by forging integrally, has cylindrically basically, forms a flange 12 with annular on the excircle of one end.On the cylindrical hollow part of boss member 11, partway towards flange 12, form the inner circumferential surface 13 of a taper, its diameter increases gradually, and the inner circumferential surface 13 of this taper is set as with the taper external peripheral surface of rotating shaft engages, thereby become taper connection.

Integrally form thin spline 14 outside by mode such as rolling on the excircle of boss member 11, thin in addition spline 14 is connected with the thin spline of interior thin spline 23 formation of the yoke 20 that will describe later on.The excircle of boss member 11 will so constitute, and makes boss member 11 in half of flange 12 sides major diameter part 15 be arranged, and in half of a side relative with flange 12 small diameter portion 16 is arranged.In addition, on the neighboring of major diameter part 15, by the end of major diameter part 15 being bent riveted joint in small diameter portion 16 sides, form a bending riveting portion 17 projectedly, this bending riveting portion 17 is in the flange 12 and the end edge portion of clamping the boss member installing hole of offering on the diapire 21 in yoke 20 22 between itself, thereby bending riveting portion 17 is connected with yoke 20 securely.The neighboring formation one of flange 12 and the concentric circles of the centres of taper inner circumferential surface 13, thus a plug portion 18 formed.

Yoke 20 integrally is shaped with common structural steel and iron by deep-draw processing, to form real round bowl-type.On the diapire 21 of yoke 20, be provided with boss member installing hole 22, it has a diameter to be slightly less than the circle of external diameter of the major diameter part 15 of boss member 11.On boss member installing hole 22, thin splined section 23 in being formed with, the outer thin splined section 14 of aforesaid boss member 11 just are bonded on this interior thin splined section 23, make yoke 20 and boss member 11 bell and spigot joint each other thus.After this, the end edge portion of the boss member installing hole 22 of yoke 20 just is clipped between the flange 12 and bending riveting portion 17 of boss member 11.Therefore, yoke 20 just is connected by thin spline with boss member 11 pins, and can not rotate, and connect securely each other by bending riveting portion 17, prevents to throw off.On the diapire 21 of yoke 20, be provided with three internal thread holes 24, they are along circumferentially arranging and open wide on thickness direction with fixing distance.In addition, on the diapire 21 of yoke 20, be provided with an anti-rotation projection 25 in the place that does not interfere with internal thread hole 24, it be a part by diapire 21 from the inside toward extrapolated and form projectedly.

Week upwards by being furnished with a plurality of magnet 27 at interval, they are resisted against on the inner circumferential surface of sidewall 26 of yoke 20, lid 28 then inserts the inside of these magnet 27 and forces lid to match with magnet.Lid 28 integrally forms with sheet metal by deep-draw processing, it is made cylindrical, its diameter is less than the internal diameter of the circle that is formed by group of magnets 27, and lid is in be pressed into the state of the inside of group of magnets 27, the cylindrical wall of lid 28 slightly outwards protrudes into by each magnet 27,27 ... in each space that forms, lid 28 just is in prevents each magnet 27,27 ... along state circumferential and that move radially.In addition, on the end edge of the close yoke diapire side of lid 28, radially inwardly saliently be provided with a bottom side flange section 28, it is riveted when pushing from the outside by the projection 29 in the fixed cover that forms highlightedly on the yoke diapire 21, and lid 28 is fixed on the yoke 20.In addition, at the opposite side of yoke diapire 21, on the end edge of lid 28, radially outwards saliently be provided with anti-bottom side flange section 28b, it is pressed against on the end face of each magnet 27, thereby makes each magnet 27 be in the state that is prevented from dropping.

On the other hand, the outer part 31 of the clutch of one-way clutch is resisted against on the outer surface of diapire 21 of yoke 20 and is fastening with bolt 48.The outer part 31 of clutch is made integrally by cold forging and is formed, and is provided with the cylindrical of big wall thickness, and this columniform external diameter is less than the external diameter of yoke 20, and internal diameter is greater than the internal diameter of the boss member installing hole 22 of yoke 20.Clutch internals installing hole 32 is formed by the cylindrical inner circumferential surface of the outer part 31 of clutch, and simultaneously, shown in the imaginary line among Fig. 2, clutch internals 33 are contained in this clutch internals installing hole 32.Outside the clutch that is positioned at the yoke side on the end of the clutch internals installing hole 32 of part 31, one socket part 34 with disc dimple identical with the shape of the flange 12 of boss member 11 is arranged, it has predetermined width diametrically, the predetermined degree of depth is arranged in the axial direction, and downwards lowland forms with one heart, and socket part 34 is connected with plug portion 18 slotting the holding that form on the excircle of the flange 12 of boss member 11.Insert by this and to hold connection, the outer part 31 of clutch is aimed at rotor 10.

Outside clutch on the inner circumferential surface of the clutch internals installing hole 32 of part 31, be furnished with three clutch chamber 35 along circumferentially crossing socket part 34 by fixed range, they are outwards lowland setting downwards radially, and clutch roller 36 rollably is housed in clutch chamber 35.Outside clutch, on the excircle of part 31, between each clutch chamber 35, be furnished with three notch portion 37, lowland is made the shape in the hole of equilateral triangle under them, on the sidewall of notch portion 37, have corresponding clamping hole 38, they extend through in the corresponding clutch chamber 35.Pushing pin 39 and clutch spring 40 insert in each corresponding clamping hole 38 successively by the opening of notch portion 37, and prevent that with the stopper 41 that is fixed in the opening it from dropping out.Bearing clutch spring 40 from the reaction force that is fixed on the stopper 41 on the outer part 31 of clutch is used for by pushing pin 39 bias voltage clutch roller 36 tangentially consistently.

At the opposite side of yoke 20, outside clutch, be provided with closure wall part 42 on the end face of part 31 highlightedly, opening closure wall part 42 sealings thus respectively at the opposite side of yoke 20 of each clutch chamber 35.In addition, accommodate a roller plate 43 in the socket part 34 of part 31 outside clutch, it is in the state between the end face of the end face of the flange 12 that is sandwiched in boss member 11 and socket part 34.Roller plate 43 usefulness thin plates integrally form, its structure will make, on the excircle of its shape being made with the main body 44 of socket part 34 essentially identical annulars, by radiation three stators 45 are set highlightedly, the shape of each stator has substantially the same with clutch chamber 35 fan-shaped.When roller plate 43 is clipped in outside the clutch between the part 31 and boss member 11, each stator 45 is in the yoke side respectively with the state of the openend of each clutch chamber 35 sealing, prevents that by these stators 45 clutch roller 36 from moving along the direction of yoke 20 thus.

Outside clutch on the part 31, in the place that does not interfere with clutch chamber 35 and notch portion 37, be provided with recessed being used to and prevent the anti-rotation hole 46 of rotating, its perforate runs through vertically, and anti-rotation hole 46 is associated with the anti-rotation projection 25 that is provided with highlightedly on the diapire 21 of yoke 20.In addition, outside clutch on the part 31, the place not interfering with each clutch chamber 35 is provided with three bolt-inserting holes 47, and its perforate runs through vertically, and each bolt-inserting hole 47 is associated with the internal thread hole of opening on the diapire 21 of yoke 20 24 respectively.Like this, socket part 34 and plug portion 18 are bonded to each other, and make outer part 31 of clutch and rotor 10 bell and spigot joints, meanwhile, be engaged with each other with anti-rotation projection 25 when anti-rotation hole 46, thereby can be when circumferentially locating well, make each bolt-inserting hole 47 be in the state that cooperates with each internal thread hole 24 respectively, making bolt 48 pass bolt-inserting hole 47 thus inserts and is screwed in the corresponding internal thread hole 24, thereby make the outer part 31 of clutch can be fastening reliably, be in and aim at rotor 10 and along the state of circumferential fix in position.

As mentioned above, be assemblied on the unshowned engine shaft by taper connection with the rotor 10 of outer part 31 of the clutch of one-way clutch and 36 assemblings of clutch roller with the taper inner circumferential surface 13 of boss member 11.When rotor 10 is contained on the unshowned engine shaft, clutch internals 33 are in the state that is inserted in the clutch internals installing hole 32 that forms on the outer part 31 of clutch, thereby each clutch roller 36 is automatically remained on the preposition in each clutch chamber 35.

Can obtain following effect by the foregoing description.

(1) plug portion 18 that forms by the neighboring of the flange of boss member 11 and the opening part of an end of part 31 forms outside being arranged at clutch socket part 34 bell and spigot joints, thereby can make outer part 31 of clutch and the rotating shaft centering exactly that is bonded on the boss member 11, like this, can be exactly and outer part 31 centerings of clutch by the clutch internals 33 of shaft support.

(2) the anti-rotation projection 25 that is arranged on highlightedly on the diapire 21 of yoke 20 engages with anti-rotation hole 46 on being located at the outer part 31 of clutch, thereby can pin the outer part 31 of clutch reliably, makes it with respect to rotor 10 rotations.

(3) according to above-mentioned effect (1) and (2), can be not be arranged on one's body 12 of the flanges of boss member 11 being used for that the outer part 31 of clutch is fastened on internal thread hole 24 on the rotor 10 yet, can set the external diameter of the flange 12 of boss member 11 less thus, thereby can reduce the manufacturing cost of boss member 11 thereby the manufacturing cost of magnetic power generator machine rotor 10 is reduced.

(4) the thin spline of boss member 11 usefulness links to each other with yoke 20 and fixes by being clamped by bending riveting portion 17, boss member 11 is securely fixed on the yoke 20, can not adopt like this by rivet the flange 12 of boss member 12 is fastened on structure on the yoke 20, thereby with top effect (3) when combining, can do the external diameter of the flange 12 of boss member 11 less.

(5) the outer part (3) of clutch can be made with the closure wall part 42 that is used for clutch roller 36 by cold forging and integrally form, and therefore can reduce number of parts, and can reduce manufacturing cost.

As mentioned above, reference example has been done to specify to the present invention, and still, the present invention should not be only limited to the above embodiments, and much less, the present invention can make different improvement in the scope that does not break away from technology main idea of the present invention.

For example, be not limited to the anti-rotation projection is arranged on the yoke side, the anti-rotation dimple be arranged on the outer part side of clutch, but the anti-rotation dimple can be arranged on the yoke side, and the anti-rotation projection can be arranged on the outer part side of clutch.

As mentioned above, according to the present invention, the plug portion that forms on the neighboring of the flange of boss member is attached in the socket part that forms on the inner rim of part outside clutch, form thus to insert and hold connection, and the projection that forms highlightedly in the part is attached in the dimple that forms on above-mentioned among both another, can set the diameter of the flange of concave station member less like this, thereby can reduce the boss member thereby the manufacturing cost of magnetic power generator machine rotor just.

Claims

1. the rotor of a magneto, wherein, part at the boss member that has a flange on its neighboring is inserted by an opening of opening on the diapire of bowl-type yoke, and part coaxially is connected with the diapire of above-mentioned yoke outside the clutch of an one-way clutch, it is characterized by:

Above-mentioned boss member fixes with an end edge portion of the opening of the above-mentioned yoke of being clamped by riveting portion that forms on its neighboring and above-mentioned flange; And

A plug portion that forms on the neighboring of the above-mentioned flange of boss member engages in the socket part that forms on the inner rim of part outside above-mentioned clutch, hold connection thereby form to insert, and in the diapire of above-mentioned yoke and the outer part of above-mentioned clutch one highlightedly a projection of setting be attached in the dimple that on above-mentioned among both another, forms.

2. the rotor of magneto as claimed in claim 1, it is characterized by: above-mentioned boss member and above-mentioned yoke are connected to each other by thin spline.

3. the rotor of magneto as claimed in claim 1 is characterized by: be used to make the internal thread hole that part is connected with above-mentioned yoke outside the above-mentioned clutch to form on the diapire of above-mentioned yoke.

4. the rotor of magneto as claimed in claim 1 is characterized by: integrally form a closure wall part on the part outside above-mentioned clutch, be used for regulating moving axially of the clutch roller that is contained in the outer part of above-mentioned clutch.

5. the rotor of magneto as claimed in claim 4 is characterized by: above-mentioned closure wall part is made integrally by cold forging and is formed on the part outside above-mentioned clutch.