CN104917341B - The mounting structure of the sensor outer housing of starter-generator - Google Patents
The mounting structure of the sensor outer housing of starter-generator Download PDFInfo
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- CN104917341B CN104917341B CN201410097573.0A CN201410097573A CN104917341B CN 104917341 B CN104917341 B CN 104917341B CN 201410097573 A CN201410097573 A CN 201410097573A CN 104917341 B CN104917341 B CN 104917341B
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- sensor housing
- fixing bolt
- starter
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Abstract
The invention discloses a kind of mounting structure of the sensor outer housing of starter-generator, wherein sensor outer housing（11）Provided with the fixed part for being fixed to fixing component（30）.Fixed seat（32）Around in fixed part（30）The fixing hole of middle formation（31）Formed, and there is close-shaped rib（33）It is consecutively provided in fixed seat（32）Around.Work as fixing bolt（7）When in insertion fixing hole and being fastened to fixing component, fixing bolt（7）Flange portion（7a）It is configured to contact the rib（33）.
Description
Technical Field
The present invention relates to a mounting structure of a sensor housing of a starter generator mounted on an engine of a motorcycle or the like, and the present invention is used for starting the engine and charging a mounted battery or the like.
Background
A rotor of a starter generator mounted on an engine of a motorcycle or the like is formed substantially in a cup shape having a convex portion at the center thereof.
The rotor magnet is annularly mounted along an inner side of a yoke portion forming an outer peripheral wall of the rotor. The stator is disposed inside the rotor, and the generating coils are radially wound at a plurality of magnetic pole portions.
The raised portion of the rotor is then engaged with the engine crankshaft.
Further, if this type of starter generator is used as a brushless motor for a starter when starting the engine, a rotational position detection sensor is provided to generate a rotational position signal for a motor driver.
Further, an ignition timing detecting sensor is provided to generate an ignition timing reference signal indicating an ignition timing of the engine.
A starter generator provided with such a sensor, a rotational position detection sensor, and an ignition timing detection sensor is mounted on an inner peripheral portion of the stator.
The rotational position detecting ring magnet is provided on the peripheral surface of the convex portion of the rotor so as to face the sensors.
Further, an ignition timing detecting ring magnet is provided to face the ignition timing detecting sensor.
On the other hand, a starter generator that generates a rotational position signal and an ignition timing signal using a magnet of a rotor and a magnetic sensor without providing a rotational position detecting ring magnet and an ignition timing detecting ring magnet is conventionally known.
In the starter generator, in order to detect the alternation of the magnetic flux in the magnet of the rotor by the magnetic sensor, a plurality of notched grooves are formed in the stator core of the stator, and the magnetic sensor is inserted into the notched grooves.
Further, a magnetic pole portion having the same polarity as that of the magnet adjacent thereto is provided as a part of one magnet of the rotor, and it has a structure that an ignition timing detection signal is generated by the magnetic pole portion and the magnetic sensor facing thereto.
In the starter generator, a magnetic sensor is accommodated in each sensor cover portion of a sensor housing, and the sensor cover portions are inserted into a plurality of notched grooves of a stator core of a stator. In this case, the sensor housing is fastened and fixed to the stator core and the engine body as a fixing member (a member to which the sensor housing is fixed) by fixing bolts.
The sensor housing is generally formed of synthetic resin, and a fixing portion fixed by being fastened to a fixing member may be integrally formed as a part of the sensor housing.
When the sensor housing is assembled, the fixed portion of the sensor housing is fastened and fixed to the engine block and/or the stator core by the fixing bolt.
However, since the engine body and the stator core vibrate when the starter generator is used, it is necessary to accurately control the tightening torque of the fixing bolt.
Therefore, conventionally, a starter generator provided with a fixing base for fixing to a fixing portion of a sensor housing made of synthetic resin by a fixing bolt formed is proposed in japanese patent application laid-open No. 2011-91966.
In the above starter generator, the plurality of protrusions are provided to the fixing base formed on a part of the sensor housing. At the time of assembly, when the sensor housing is fastened to the engine body by fastening the fixing bolt, the protrusion of the fixing base is pressed by the flange portion of the fixing bolt, and the sensor housing is fixed.
However, since the plurality of projections provided on the fixing base are arranged with a space therebetween, fastening stress of fastening when the fixing bolt is tightened is concentrated on the root portions of the projections, and thus there is a risk that breakage easily occurs at the projections.
Moreover, since the fixing base of the sensor housing is formed to protrude from a part of the housing and is also formed in a ring shape having an insertion hole for a bolt at the center thereof, a welded portion (a discontinuous portion occurring when a material portion is hardened before the material flow stops) is liable to occur in the process of injection molding with a mold.
Further, due to the stress concentration of the protrusion, when the stress concentrated on the fixing base increases, there is a problem that the stress applied to the welded portion also increases, and thus cracking easily occurs.
In addition, in the process of molding the sensor housing with synthetic resin, the synthetic resin material is less likely to flow into the projections discontinuously provided on the annular holder, and there is a problem that voids are likely to occur in the projections.
Disclosure of Invention
The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a mounting structure of a sensor housing of a starter generator, which can suitably fasten and fix the sensor housing to a fixing member without causing stress concentration.
In the mounting structure of the sensor housing of the starter-generator according to the first aspect, the starter-generator includes: a rotor having a convex portion at a center thereof and formed in a cup shape by disposing a yoke portion so as to surround an outer peripheral portion of the convex portion; a rotor magnet disposed inside the yoke portion; a stator disposed inside the rotor, having a plurality of salient pole portions, and having a generating coil wound around a stator core; and a sensor housing fastened and fixed to the fixing member by a fixing bolt.
The starter generator further includes: a plurality of magnetic sensors provided in the sensor housing, detecting a rotational position of the rotor and outputting a detected signal; a fixing portion fixed to a fixing member protruding from the sensor housing; a fixing hole for being inserted by a fixing bolt formed in the fixing portion; a fixing seat formed around the fixing hole; and a rib having a closed shape and continuously provided on the holder.
When the fixing bolt is inserted into the fixing hole and fastened to the fixing member, the flange portion of the fixing bolt is configured to contact the rib.
According to the present invention, since the rib having a closed shape is continuously provided around the fixing base and the flange portion of the fixing bolt contacts the rib when the fixing bolt is fastened, stress is dispersed on the rib during fastening so that stress concentration does not occur, and the sensor housing is suitably fastened and fixed to the fixing member.
Furthermore, stress concentrations on the portions where welding tends to occur can be avoided. Also, when the sensor housing is formed of synthetic resin, moldability becomes excellent, and occurrence of voids is prevented.
According to the mounting structure of the sensor housing of the starter generator of the present invention, the sensor housing can be suitably fastened and fixed to the fixing member without causing stress concentration.
In the mounting structure of the sensor housing of the starter-generator according to the second aspect, the rib is formed in a square frame shape in a plan view of the fixing base, and the flange portion of the fixing bolt comes into contact with a part of the straight portion of the rib when the bolt is fastened.
In the mounting structure of the sensor housing of the starter-generator according to the third aspect, the short-cut rib is provided in a corner portion of the rib to short-cut the corner portion, and when the fixing bolt is fastened, the short-cut rib is arranged outside the flange portion of the fixing bolt.
In the mounting structure of the sensor housing of the starter-generator according to the fourth aspect, a widened rib having a shape wider than the width of the straight portion of the rib is provided at a corner portion of the rib, and the widened rib is provided outside the flange portion of the fixing bolt when the fixing bolt is fastened.
In the mounting structure of the sensor housing of the starter-generator according to the fifth aspect, the chopped rib is disposed near the center of the distal end of the fixed portion.
In the mounting structure of the sensor housing of the starter generator according to the sixth aspect, the straight portion of the rib is formed such that the upper surface is inclined in the vertical direction.
Drawings
In the drawings:
fig. 1 shows a front view of a starter generator in a first embodiment of the invention;
FIG. 2 shows a central cut-away view of a starter generator attached to an engine;
FIG. 3 shows a side view of the sensor unit;
FIG. 4 shows an exploded perspective view of the sensor unit;
FIG. 5 shows an enlarged view of the rotor magnet arrangement;
FIG. 6 shows an exploded plan view of the sensor unit;
FIG. 7 shows a perspective view of the sensor housing from the bottom side;
FIG. 8 shows a plan view of a sensor unit;
fig. 9 shows a bottom view of the sensor unit;
fig. 10 shows a partial sectional view showing a state in which a magnetic sensor is inserted between stator cores;
fig. 11 shows an explanatory diagram showing a relationship between the magnetic sensor and the rotor magnet;
fig. 12 shows a timing chart showing the rotational position detection signal and the ignition timing signal;
fig. 13A shows a plan view of a fixed part of a sensor housing in a second embodiment;
FIG. 13B shows a perspective view of a stationary portion of the sensor housing in the second exemplary embodiment;
fig. 14A shows a plan view of a fixed portion of a sensor housing in a third embodiment;
fig. 14B shows a perspective view of a fixed part of the sensor housing in the third embodiment;
fig. 15A shows a plan view of a fixed portion of a sensor housing in a fourth embodiment;
fig. 15B shows a perspective view of a fixed part of a sensor housing in a fourth embodiment;
fig. 16A shows a plan view of a fixed portion of a sensor housing in a fifth embodiment; and
fig. 16B shows a perspective view of a fixed portion of the sensor housing in the fifth embodiment.
Detailed Description
Embodiments of the present invention will be described hereinafter with reference to the accompanying drawings.
[ first embodiment ]
Fig. 1 shows a front view of the starter generator, and fig. 2 shows a central vertical sectional view thereof.
The rotor 1 of the starter-generator has a boss portion 3 at the center thereof, and is formed in a cup shape by disposing a yoke portion 2 so as to surround the outer peripheral portion of the boss portion 3. For example, the yoke portion 2 and the boss portion 3 are made of a magnetic metal as a material, and are made by hot forging and cutting.
As shown in fig. 2, a tapered hole to be fitted with a crankshaft 9 of the engine is formed in the boss portion 3 at the center of the rotor 1, and a flat fastening seat surface is formed at the distal end of the boss portion 3.
A rotor magnet 4 composed of arcuate magnet pieces divided into a plurality of pieces is arranged in a ring shape inside the yoke portion 2.
The rotor magnet 4 arranged in a ring shape is held inside the yoke portion 2, and a cylindrical protective cover 5 is mounted inside the rotor magnet 4.
The rotor magnet 4 is configured such that 12 magnetic pole portions are arranged in a ring shape in which N poles and S poles alternate without a gap therebetween.
Also, as shown in the exploded view of fig. 5, the detection magnetic pole portion 42 having a different polarity (that is, the same polarity as the adjacent magnetic pole) is magnetized on the edge of one of the magnetic pole portions 41 in the rotor magnet 4 to generate an ignition timing detection signal.
Here, since the magnetic pole portion 41 is magnetized to the S pole, the detection magnetic pole portion 42 thereon is magnetized to the N pole by the magnet and is magnetized in the same polarity as the adjacent magnetic pole portions 43 and 44.
The detection pole portion 42 is adapted to be detected by the magnetic sensor 14d to generate an ignition timing detection signal.
As shown in fig. 2, the rotor 1 is fixed by fitting the boss portion 3 to the distal end of the crankshaft 9 of the engine and screwing a fixing nut or bolt to the distal end of the crankshaft 9.
When the tapered hole is fitted to the distal end of the crankshaft 9, the rotor l is fitted and fixed in a predetermined angular relationship with respect to the crankshaft 9 of the engine by fitting a key (not shown) mounted on the outer periphery of the tapered portion of the crankshaft 9 into a key groove (not shown) of the rotor 1.
On the other hand, as shown in fig. 1 and 2, the stator 20 of the starter-generator is constructed by winding a generating coil 23 to each of a plurality of salient pole portions 21 protruding from the outer periphery of a stator core 22.
The stator core 22 having the shape of the plurality of salient pole portions 21 on the outer peripheral portion of the annular yoke portion 24 is stamped by laminating a plurality of steel plates, and is fixed by rivets.
The distal ends of the salient pole portions 21 in the foremost and rearmost steel sheets are bent outward like flanges, and provide a function of keeping the generating coil 23 wound around the distal ends of the salient pole portions 21.
The generating coil 23 is wound around each salient pole portion 21 of the stator core 22 by a predetermined number of turns in a predetermined order by a winding machine, and the harness 8 is connected to a wire of the generating coil 23, as shown in fig. 1.
Furthermore, the stator 2 is provided with a sensor unit 10. The sensor unit 10 has magnetic sensors 14a, 14b, 14c, and 14d such as hall ICs to generate a rotational position detection signal of the rotor 1 and an ignition timing signal by detecting the rotational position of the rotor 1.
As shown in fig. 1 and 2, the sensor unit 10 is mounted to a predetermined position in front of the stator 200.
As shown in fig. 4 and 6, the sensor unit 10 is configured to accommodate the circuit board 12 for detection signals of the magnetic sensors 14a, 14b, 14c, 14d in the sensor housing 11 to form four sensor cover portions 15 protruding from the bottom of the sensor housing 11, and the magnetic sensors 14a, 14b, 14c, 14d are inserted into the sensor cover portions 15.
As shown in fig. 4 and 6, the sensor housing 11 is integrally molded in a box shape by synthetic resin.
An opening pin portion 11a is formed on the bottom of the sensor housing 11 to fix the circuit board 12 accommodated therein.
Fixing holes 12a are provided on the circuit board 12, and by fitting the fixing holes 12a to the opening pin portions 11a, the circuit board 12 is fixed to a predetermined position in the sensor housing 11.
Further, a detection circuit is formed on the inner surface of the circuit board 12, and circuit elements are realized, and the magnetic sensors 14a, 14b, 14c, 14d in the form of being inserted into each sensor cover portion 15 are connected to the detection circuit by long and short wires.
Furthermore, four magnetic sensors 14a, 14b, 14c, 14d are attached to the circuit board 12 in an inwardly protruding fashion by long and short wires to match the position of each sensor cover portion 15.
Therefore, when the circuit board 12 is accommodated in a certain position in the sensor housing 11, each of the magnetic sensors 14a, 14b, 14c, 14d is inserted into each sensor cover portion 15 and mounted in the sensor housing 11.
As for the mounting conditions of the four magnetic sensors, three magnetic sensors 14a, 14b, 14c for detecting the rotational position of the rotor i are attached by long wires, and a magnetic sensor 14d for detecting the ignition timing is attached by short wires.
As shown in fig. 7 to 9, the mounting portion 13 provided with the fixing hole is formed integrally with the sensor housing 11 at the radially inner edge of the sensor housing 11 to be fixed to the stator core 22. In addition, a fixing portion 30 provided with a fixing hole 31 is formed integrally with the sensor housing 11 at a radially outer edge of the sensor housing 11 protruding outward like a tongue to be fixed to the engine body.
The fixing portion 30 is formed to protrude outward from the sensor housing 11, and a fixing hole 31 for fixing the bolt 7 is formed at the center thereof.
The fixing seat 32 is formed around the fixing hole 31 of the fixing portion 30 so that the flange portion 7a (fig. 3) of the fixing bolt 7 is rested thereon.
Further, as shown in fig. 7 to 9, a rib 33 having a closed shape is continuously provided on the holder 32. The rib 33 has a substantially box shape in plan view.
In the fixing seat 32, an annular recessed surface stepped down from the surface of the fixing portion 30 is formed in the periphery of the fixing hole 31, and a rib 33 is continuously formed on the recessed surface.
As shown in fig. 7 and 9, the rib 33 is formed in a box shape, and as shown in fig. 9, the rib 33 is formed in a shape and a size such that: when the bolt 7 is inserted into the fixing hole 31 and fastened, the flange portion 7a of the fixing bolt 7 contacts a portion of the straight portion 33a of the rib 33.
As shown in fig. 3, the fixing bolt 7 has a fastening structure of: a flange portion 7a is formed on the lower side of the head of the fixing bolt 7, and a collar 7b is provided in a base portion of the flange portion 7 a. When the fixing bolt 7 is inserted into the fixing hole 31, the collar 7b is tightly fitted within the fixing hole 31, and the flange portion 7a is in contact with the fixing seat 32.
Further, the rib 33 is formed in a closed and continuous shape on the holder 32.
Therefore, in the protruding fixing portion 30 into which the synthetic resin material is hard to flow in the process of molding the sensor housing 11, the resin can be smoothly poured to the rib 33, and a void can be prevented from occurring in such a portion.
When the sensor unit 10 equipped with the magnetic sensors 14a, 14b, 14c, and 14d is mounted, the magnetic sensors 14a, 14b, 14c, and 14d are inserted into gaps formed between the adjacent salient pole portions 21 of the stator 20 through the sensor cover portion 15, and the sensor unit 10 is mounted to detect a change in magnetic flux caused by rotation of the rotor magnet 4 of the rotor 1.
Although not shown, the final mold resin is filled into the sensor housing 11 in this state, and the circuit board 12 and the magnetic sensors 14a, 14b, 14c, and 14d are fixed at fixed positions having sufficient anti-vibration strength.
Here, the detection of the rotation of the generator and the detection of the ignition timing are explained.
By fixing the sensor housing 11 at the fixed position of the stator 20, the magnetic sensors 14a, 14b, 14c, and 14d of the sensor unit 10 are inserted and disposed in the gaps between the adjacent salient pole portions 21 of the stator 20, as shown in fig. 10.
At this time, the magnetic sensors 14a, 14b, 14c with long wires are disposed at positions contacting the magnetic pole portions 41, 43, 44, etc. of the rotor magnet 4, and the magnetic sensor 14d with short wires is disposed at a position corresponding to the position of the detection magnetic pole portion 42 for detecting the ignition timing.
That is, the sensor unit 10 detects the rotational position of the rotor magnet 4 by the magnetic sensors 14a to 14d provided therein.
However, since the magnetic sensor 14d having a short conductive wire among the four magnetic sensors 14 detects the magnetism of the edge of the rotor magnet 4 (fig. 5), and the magnetic block rotates facing the magnetic sensor 14d, the magnetic sensor 14d continuously detects the magnetic flux of the N pole when the detection magnetic pole portion 42 having the same polarity as the adjacent magnetic pole portion (shown in fig. 5) passes through the magnetic sensor 14 d.
Therefore, when the detection magnetic pole portion 42 of the rotor magnet 4 reaches the magnetic sensor 14d of the sensor unit 10, the magnetic sensor 14d detects the N · N pole, and switching of the magnetic flux does not occur, and therefore, a continuous low-level signal or high-level signal as an ignition timing signal is generated between the adjacent magnetic pole portions 41 to 44 of the rotor magnet 4, as shown in fig. 12.
On the other hand, fixing holes are drilled in the yoke portion 24 of the center portion of the stator core 22, and as shown in fig. 1 and 2, fixing screws 26 are inserted into the fixing holes, and thus the stator 20 is fixed to the inside of the engine block 27 by the fixing screws 26.
As shown in fig. 2, the rotor l is fixed to the distal end of the crankshaft 9 of the engine with the detection pole portion 42 set at a predetermined angular position.
When the sensor unit 10 is mounted to a certain position of the stator 20, the mounting portion 13 of the sensor housing 11 contacts the yoke portion 24 of the stator 20, and the mounting bolts 13a are inserted into the mounting holes of the mounting portion 13 and fastened so that the sensor unit 10 is fixed to the yoke portion 24 of the stator 20, as shown in fig. 1.
Then, under the condition that the stator 20 is fixed to the inside of the engine body 27 of the engine, the fixing portion 30 of the sensor housing 11 is brought into contact with the fixing member of the engine body 27, and the fixing bolt 7 is inserted into the fixing hole 31 to fasten and fix the fixing portion 30.
At this time, the flange portion 7a of the fixing bolt 7 is brought into contact with a part of the straight portion 33a of the rib 33 and fastened and fixed to press the straight portion 33a, however, since the rib 33 is formed in a closed and continuous shape, stress generated in the rib is dispersed, and this prevents stress concentration.
Further, since the rib 33 is formed in a box shape and the flange portion 7a of the fixing bolt 7 is fixed to contact and press the portion of the straight portion 33a other than the corner portion of the rib 33 left outside the flange portion 7a as shown in fig. 9, stress concentration does not occur and the sensor housing 11 is appropriately fastened and fixed to the fixed member of the engine body 27.
In addition, in the sensor housing 11 made of synthetic resin, a welded portion (a formed discontinuous portion that occurs in a mold when the synthetic resin material is partially hardened before the material flow completely stops) tends to occur when the synthetic resin material flows near the distal end of the fixing portion 30 after molding, and stress concentration tends to occur in the welded portion, however, stress occurring when fastening the fixing bolt is dispersed by the rib 33 formed in a closed and continuous shape, and thus stress concentration on the welded portion can be avoided.
When starting the engine, the starter generator configured as described above functions as a brushless motor, and current of each of U, V and W phases is supplied from a motor driver (not shown) to the coil of each salient pole portion 21 of the stator 20, so that the rotor 1 rotates.
At this time, the rotational position detection signals detected by the magnetic sensors 14a, 14b, 14c, and 14d of the sensor unit 10 are sent to the motor driver.
Then, the starter generator is driven as a brushless motor, and the crankshaft 9 is rotated by the rotation of the rotor 1 of the starter generator, so that the engine is started.
As the engine starts, a rotational position detection signal and a reference position signal (a detected signal of the magnetic sensor 14 d) from the magnetic sensors 14a, 14b, 14c, and 14d that detect the magnetic flux of the rotor magnet 4 are input to a control unit of the engine (not shown), and an ignition timing signal is generated based on the rotational position detection signal and the reference position signal, thereby controlling the ignition timing of the engine.
As shown in fig. 12, when the rotational position detection signals from the magnetic sensors 14a, 14b, and 14c and the high-level reference position signal from the magnetic sensor 14d continue, the ignition timing signal at this time is generated.
[ other examples ]
It should be understood that, in the following embodiments, the same reference numerals are given to the same or similar components as those in the first embodiment, and the structures and features thereof will not be described to avoid redundant explanations.
Fig. 13 to 16 show other embodiments of the fixing portion of the sensor housing 11.
In the second embodiment shown in fig. 14A and 14B, a closed rib 33 formed in a continuous and block shape is provided on a fixed seat 32 formed in a fixed portion 30 of the sensor housing 11, and a short-cut rib 35 is provided in a corner portion 33B (a corner portion connecting straight portions 33 a) of the rib 33 to short-cut the corner portion 33B.
When the fixing bolt 7 is fastened, the chopping ribs 35 are arranged outside the flange portion 7a, and by providing the chopping ribs 35, stress in the corner portions 33b which is easily concentrated when the fixing bolt 7 is fastened can be dissipated, and by preventing stress concentration, the fixing seat 32 is prevented from being broken.
Specifically, when the sensor housing 11 is molded by injection molding of synthetic resin, since the synthetic resin material flows into the fixing portion 30 at the last moment, a welded portion tends to occur at the distal end portion of the fixing portion 30.
However, as shown in fig. 14A and 14B, since the corner portions 33B of the rib 33 are arranged at the distal end portion of the fixing portion 30, and the chopped ribs 35 are formed in the corner portions 33B, the stress in the corner portions 33B, which is easily concentrated when fastening the fixing bolt 7, can be dissipated, and by further preventing the stress concentration, the fixing seat 32 is prevented from being broken.
Further, in the third embodiment shown in fig. 15A and 15B and the fourth embodiment shown in fig. 16A and 16B, a closed rib 33 formed in a continuous and block shape is provided on a fixed seat 32 formed in the fixed portion 30 of the sensor housing 11, and widened ribs 36, 37 having a shape in which the width of the rib inside the corner portion is widened are provided in a corner portion 33B (corner portion connecting the straight portions 33 a) of the rib 33.
The widened rib 36 of the third embodiment shown in fig. 14A and 14B is formed in a shape in which the width of the rib in the corner portion is widened, and the widened rib 37 of the fourth embodiment shown in fig. 15A and 15B is formed in a shape in which the width of the straight portion 33a of the rib 33 near the corner portion is widened.
When the fixing bolt 7 is fastened, the widened ribs 36, 37 are arranged outside the flange portion 7a, and by providing the widened ribs 36, 37, stress in the corner portion 33b, which is easily concentrated when the fixing bolt 7 is fastened, can be dissipated, and by preventing stress concentration, the fixing base 32 is prevented from being broken.
Further, in the fifth embodiment shown in fig. 16A and 16B, the closed rib 33 formed in a continuous and block shape is provided on the fixing seat 32 formed in the fixing portion 30 of the sensor housing 11, and the straight portion 38a of the rib 38 is formed such that the upper surface is inclined in the vertical direction, that is, the thickness (or height) of the straight portion 38a increases from one end to the other end.
Therefore, when the fixing bolt 7 is fastened, the straight portion 38a whose thickness is changed by the inclination is pressed by the flange portion 7a, thus preventing the fixing bolt 7 from becoming loose when fastened and fixed by a proper tightening torque.
As shown in fig. 16A and 16B, although a step is formed due to the inclination of the upper surface of the rib in the corner portion 38B of the rib 38 at the point of connecting the adjacent straight portions 38a, the corner portion 38B is arranged outside the flange portion 7a of the fixing bolt 7, and therefore no problem occurs.
Although the closed rib 33 is formed in a box shape in the above embodiment, the rib may be formed in an irregular shape including a curved portion other than a rectangular frame shape as long as the rib has a continuous shape.
Claims (6)
1. A mounting structure of a sensor housing of a starter generator, comprising:
a starter generator, comprising:
a rotor having a convex portion at a center thereof and formed in a cup shape by disposing a yoke portion so as to surround an outer peripheral portion of the convex portion;
a rotor magnet disposed inside the yoke portion;
a stator disposed inside the rotor, having a plurality of salient pole portions, and having a generating coil wound around a stator core;
a sensor housing fastened and fixed to the fixing member by a fixing bolt;
a plurality of magnetic sensors provided in the sensor housing, detecting a rotational position of the rotor and outputting a detected signal;
a fixing portion fixed to a fixing member protruding from the sensor housing;
a fixing hole for being inserted by a fixing bolt formed in the fixing portion;
a fixing seat formed around the fixing hole; and
a rib having a closed shape and continuously provided on the holder;
wherein,
when the fixing bolt is inserted into the fixing hole and fastened to the fixing member, the flange portion of the fixing bolt is configured to contact the rib.
2. The mounting structure of the sensor housing of the starter-generator according to claim I,
in a plan view of the holder, the rib is formed in a square frame shape; and
when the fixing bolt is fastened, the flange portion of the fixing bolt contacts a portion of the straight portion of the rib.
3. The mounting structure of the sensor housing of the starter-generator according to claim 2,
the chopping rib is arranged at the corner part of the rib to chop the corner part; and
when the fixing bolt is tightened, the chopped ribs are located outside the flange portion of the fixing bolt.
4. The mounting structure of the sensor housing of the starter-generator according to claim 3,
providing a widened rib having a shape wider than a width of a straight portion of the rib at a corner portion of the rib; and
when the fixing bolt is tightened, the widened rib is located outside the flange portion of the fixing bolt.
5. The mounting structure of the sensor housing of the starter-generator according to claim 3,
the chopping ribs are disposed near the center of the distal end of the fixed portion.
6. The mounting structure of the sensor housing of the starter-generator according to claim 2,
the straight portion of the rib is formed such that the upper surface is inclined in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410097573.0A CN104917341B (en) | 2014-03-14 | 2014-03-14 | The mounting structure of the sensor outer housing of starter-generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410097573.0A CN104917341B (en) | 2014-03-14 | 2014-03-14 | The mounting structure of the sensor outer housing of starter-generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104917341A CN104917341A (en) | 2015-09-16 |
| CN104917341B true CN104917341B (en) | 2018-01-02 |
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|---|---|---|---|
| CN201410097573.0A Active CN104917341B (en) | 2014-03-14 | 2014-03-14 | The mounting structure of the sensor outer housing of starter-generator |
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| JP7540317B2 (en) | 2020-12-10 | 2024-08-27 | スズキ株式会社 | engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904388A (en) * | 2011-07-28 | 2013-01-30 | 日本电产株式会社 | Motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5563805B2 (en) * | 2009-10-23 | 2014-07-30 | 株式会社ミツバ | Sensor case and rotating electric machine using the same |
| JP5827034B2 (en) * | 2011-05-23 | 2015-12-02 | デンソートリム株式会社 | Starting generator |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904388A (en) * | 2011-07-28 | 2013-01-30 | 日本电产株式会社 | Motor |
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