CN103178646A - Electric motor - Google Patents

Electric motor Download PDF

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Publication number
CN103178646A
CN103178646A CN2012105299449A CN201210529944A CN103178646A CN 103178646 A CN103178646 A CN 103178646A CN 2012105299449 A CN2012105299449 A CN 2012105299449A CN 201210529944 A CN201210529944 A CN 201210529944A CN 103178646 A CN103178646 A CN 103178646A
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CN
China
Prior art keywords
substrate
motor
housing
axially
towards
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Granted
Application number
CN2012105299449A
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Chinese (zh)
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CN103178646B (en
Inventor
若林隆
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Nidec Instruments Corp
Original Assignee
Sankyo Seiki Manufacturing Co Ltd
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Publication of CN103178646A publication Critical patent/CN103178646A/en
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Publication of CN103178646B publication Critical patent/CN103178646B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention provides an electric motor, which can prevent foreign materials from entering a part provided with a gear train inside a housing during an assembling process and thus increase the freedom of an assembling process. The electric motor comprises the housing (4) accommodating an electric motor main body part (2) and a decelerating gear part (3). The decelerating gear part (3) comprises a gear train (13) and a supporting plate (15). The gear train (13) is composed of a plurality of gears and connected with a rotary shaft (6). A supporting shaft (14) supporting the gears in a way to enable the gears to rotate is fixed on the supporting plate (15). A cut part (4c) for arranging a terminal part (28) is formed on the housing (4) in a way to cut the housing (4) from one axial end of the rotary shaft of the housing (4) towards the other end side. The gear train (13) is arranged on one axial end side of the supporting plate (15). A separator plate part (15c) making at least a part of the cut part (4c) sealed is formed on the supporting plate (15) in a way to be erected towards one axial end side.

Description

Motor
Technical field
The present invention relates to the motor with decelerator.
Background technology
Under prior art, known have a kind ofly possess the stepping motor main body, with dynamic retarding and the gear reduction that transmits of stepping motor main body and the motor (for example with reference to patent documentation 1) of accommodating the motor field frame of stepping motor main body and gear reduction.
In the motor that patent documentation 1 is put down in writing, the stator that consists of the stepping motor main body possesses: drive with coil, with drive the wiring pin that is connected with overhang and the terminal board of maintenance wiring pin.Gear reduction possesses: the base plate that connects with the end face of stator, the gear train that is fixed on the bolster on base plate and is made of a plurality of gears, wherein, a plurality of gears are supported on bolster in the mode that can rotate.
In addition, this electric tools is ready for use on and supplies with the connector section of electric current and be coated on protective cover in connector section driving with coil.Connector section possesses bonder terminal and keeps the connector shell of bonder terminal.The bonder terminal of the wiring pin of stator and connector section is electrically connected via wiring substrate.
On motor field frame, be formed be used to making terminal board be exposed to the otch in the outside of motor field frame.This otch is to form towards another distolateral mode with the motor field frame excision with the end that the motor reel from motor field frame makes progress.In addition, this otch is connected device shell and protective cover from the outer circumferential side shutoff of motor field frame, and connector shell and protective cover prevent that the foreign matters such as rubbish from entering into the inside of motor field frame from otch.
[formerly technical literature]
[patent documentation]
Patent documentation 1: No. 2010-288362, Japanese communique, JP
Summary of the invention
In the motor that patent documentation 1 is put down in writing; when assembling motor; after being arranged on connector shell and protective cover on motor field frame; the base plate that is fixed with bolster is configured in motor field frame; in addition gear train is configured in motor field frame; thus, when assembling motor, can prevent that the foreign matter such as rubbish from entering into the part that disposes gear train in motor field frame.Therefore, in this motor, can prevent from causing gear train to sustain damage because of the foreign matter such as rubbish.
But; in this motor; when assembling, enter into the part that disposes gear train in motor field frame in order to prevent foreign matter, must be after being arranged on connector shell and protective cover on motor field frame, base plate and gear train to be configured in motor field frame.Therefore, in this motor, the degree of freedom of motor assembling operation is low.
Therefore, problem of the present invention is to provide a kind of can prevent that foreign matter from entering into the part that disposes gear train in housing when assembling, thereby can improve the motor of the degree of freedom of assembling procedure.
In order to solve above-mentioned problem, motor of the present invention is characterised in that to possess: motor body section; Reduction gearing section, it is with the dynamic retarding of motor body section and transmit; And housing, it accommodates motor body section and reduction gearing section; Motor body section possesses rotor and stator, and wherein, rotor has rotating shaft and is fixed on driving magnet on rotating shaft, and stator has and drives with coil and the portion of terminal that is connected with overhang with driving; Reduction gearing section possesses gear train and support plate, wherein, gear train is made of a plurality of gears and is connected with rotating shaft, is fixed with the bolster that gear is supported in the mode that can rotate on support plate, perhaps, support plate supports the bolster that together rotates with gear in the mode that can rotate; On housing, be formed with notch with the end on axial from the rotating shaft of housing towards another distolateral mode with the housing excision, this notch is used for the configuration portion of terminal; Gear train be configured in support plate axially on one distolateral; Support plate be configured in stator axially on one distolateral; On support plate, to be formed with partition board portion towards an axial distolateral mode that erects, this partition board portion is with at least a portion shutoff of notch.
In motor of the present invention, on support plate, to be formed with partition board portion towards the axial distolateral mode that erects of rotating shaft, this partition board portion will be formed at least a portion shutoff of the notch on housing.Therefore, in the present invention, by support plate is configured in enclosure interior, can utilize partition board portion with at least a portion shutoff of notch.Therefore; in the present invention; when assembling motor; even in support plate is configured in housing; and installed be configured in support plate axially on a distolateral gear train after; the parts that will cover notch as connector shell and protective cover that patent documentation 1 is put down in writing, from the outer circumferential side of housing are arranged on housing, can prevent that also foreign matter from entering into the part that disposes gear train in housing.
Namely, in the present invention, when assembling motor, even in support plate is configured in housing and before the mounting teeth train, the parts that will not cover notch from the outer circumferential side of housing are arranged on housing, can prevent that also foreign matter from entering into the part that disposes gear train in housing.Consequently, in the present invention, when assembling motor, can prevent that foreign matter from entering into the part that disposes gear train in housing, thereby can improve the degree of freedom of motor assembling operation.
In the present invention, preferred housing possesses the cylinder cylindraceous section of being formed roughly; Notch be with from cylinder section axially on an end form towards another distolateral mode with the excision of cylinder section; Partition board portion is formed following such roughly circular-arc from end on observation the time, that is, the center of curvature of partition board portion is roughly consistent with the center of curvature of cylinder section, and the radius of curvature of the radius of curvature of partition board portion and cylinder section about equally.
In the situation that consist of like this, be formed with partition board portion the flat situation of notch shutoff is compared, can guarantee the configuration space of gear train.
In the present invention, preferred separator section axially on an end be configured in compare a plurality of gears axially on an end more by on axial one distolateral position.
In addition, in the present invention, preferred motor possesses end plate, this end plate with will be formed at housing axially on the mode of opening shutoff of an end be fixed on housing axially on an end; Support plate possesses the axle fixed part, is fixed with bolster on this axle fixed part, and perhaps, this axle fixed part supports bolster in the mode that can rotate; Partition board portion is formed outer circumference end from the axle fixed part towards axial distolateral erecting; Partition board portion axially on an end face and end plate axial on the other end connect; Partition board portion with in notch, compare the axle fixed part and more integrally carry out shutoff by the distolateral part on axially.
In the situation that consist of like this, when assembling motor, can prevent effectively that foreign matter from entering into the part that disposes gear train in housing.
In the present invention, preferred motor possesses the substrate on the portion of terminal of being fixed on, and on support plate, the mode of extending with the radial outside towards rotating shaft is formed with the substrate maintaining part that keeps substrate.In the situation that consist of like this, can keep substrate with support plate.Therefore, compare with the situation of the parts that are provided in addition keeping substrate, can simplify the formation of motor.
In addition, in the situation that consist of like this, for example when being fixed on the substrate soldering on portion of terminal, thereby can utilize the substrate maintaining part to keep substrate that substrate is positioned.Therefore, can utilize the substrate maintaining part to prevent that substrate from rocking with respect to portion of terminal, consequently, the soldering operation with the substrate soldering on portion of terminal becomes easy.
In the present invention, when the direction parallel with the bearing of trend of substrate maintaining part is made as first direction, to be made as second direction with axially vertical with first direction direction, end side on the first direction of substrate maintaining part is made as the inboard of first direction, when the front on the first direction of substrate maintaining part is made as the outside of first direction, the both end sides on the second direction of substrate maintaining part for example, be formed with arm in the mode of extending towards the outside of first direction respectively, this arm is respectively used to keep the both ends on the second direction of substrate.
In the present invention, preferably between the arm of the both end sides on the second direction that is formed at respectively the substrate maintaining part, be formed with the abutting part that the medial surface on the first direction with substrate connects.In this situation, the front end face of preferred abutting part be formed with by axially and second direction consist of parallel plane plane, and the medial surface on the front end face of abutting part and the first direction of substrate connects.In the situation that consist of like this, can make the substrate that remains between arm become stable.
In the present invention, preferred support plate is formed by resin, and, arm can be on second direction strain.In the situation that consist of like this, becoming easily is arranged on substrate between arm.
In the present invention, preferably the front at arm is formed with the maintenance groove, and this maintenance groove caves in toward the outer side from the medial surface on the second direction of arm, and the end on the second direction of substrate embeds and keeps in groove.In addition, in the present invention, preferably the front end at arm is formed with the maintenance projection, and this keeps projection along with towards the inboard of first direction and the inboard expansion on the second direction of arm, and the lateral surface on the medial surface on the first direction of maintenance projection and the first direction of substrate connects.In the situation that consist of like this, can prevent that the position that remains on the substrate between arm from just becoming not.
In the present invention, preferred support plate is formed by resin; Arm can be on second direction strain; Front at arm is formed with the maintenance groove, and this maintenance groove caves in toward the outer side from the medial surface on the second direction of arm; Front end at arm is formed with the maintenance projection, and this keeps projection along with towards the inboard of first direction and the inboard expansion on the second direction of arm; End on the second direction of substrate embeds and keeps in groove; Lateral surface on medial surface on the first direction of maintenance projection and the first direction of substrate connects; Between the arm of the both end sides on the second direction that is formed at respectively the substrate maintaining part, be formed with the abutting part that the medial surface on the first direction with substrate connects; The front end face of abutting part be formed with by axially and second direction consist of parallel plane plane; And the medial surface on the front end face of abutting part and the first direction of substrate connects.
In the situation that consist of like this, becoming easily is arranged on substrate between arm.In addition, in the situation that consist of like this, can make the substrate that remains between arm become stable.And then, in the situation that consist of like this, can prevent that the position that remains on the substrate between arm from just becoming not.
In the present invention, preferably when the direction parallel with the bearing of trend of substrate maintaining part is made as first direction, in the time of will being made as second direction with axially vertical with first direction direction, portion of terminal possesses a plurality of wiring pins, substrate is held by a plurality of wiring pins and substrate maintaining part, and wherein, a plurality of wiring pins are configured in a row on second direction, and substrate is fixed on a plurality of wiring pins by soldering.In the situation that consist of like this, can improve the constant intensity of substrate.
In the present invention, for example portion of terminal and substrate maintaining part configure with the state of the predetermined distance of being separated by in the axial direction, and portion of terminal and substrate maintaining part are overlapped from end on observation the time.
In the present invention, preferred motor possesses the lead-in wire that is connected on substrate, and, go between along partition board portion towards axial distolateral being drawn.In the situation that consist of like this, can use partition board portion will go between aptly towards axial distolateral drawing.In addition, in the situation that consist of like this, can utilize partition board portion to prevent from being disturbed towards axial a distolateral lead-in wire of drawing and gear train.
In the present invention, for example substrate axially on a distolateral substrate maintaining part of comparing further towards axial one distolateral outstanding, and, lead-in wire be between partition board portion and substrate towards axial distolateral being drawn.
In the present invention, preferred motor possesses end plate, this end plate with will be formed at housing axially on the mode of opening shutoff of an end be fixed on housing axially on an end; End plate forms by the Punching Technology of utilizing punch press to carry out, and, end plate so that produce burr the overlap side facing to axial one distolateral mode be fixed on housing axially on an end.In the situation that consist of like this, can prevent from causing because of the burr that produces on end plate lead-in wire to sustain damage.
In the present invention, the standby end plate of electric tools for example, this end plate with will be formed at housing axially on the mode of opening shutoff of an end be fixed on housing axially on an end; On support plate, to be formed with a plurality of support projection of bearing end plate towards an axial distolateral mode that erects; Support projection axially on an end face on be formed with projection, this projection is used on the circumferencial direction of rotating shaft, end plate being positioned.
(invention effect)
As mentioned above, according to the present invention, when assembling motor, can prevent that foreign matter from entering into the part that disposes gear train in housing, thereby can improve the degree of freedom of motor assembling operation.
Description of drawings
Fig. 1 is the vertical view of the motor that relates to of embodiments of the present invention.
Fig. 2 is the sectional arrangement drawing be used to the internal structure that motor shown in Figure 1 is described.
Fig. 3 is for the part sectioned view of the motor of key diagram 1 from the side.
Fig. 4 is the end view of pulling down the state after cover from motor shown in Figure 1.
Fig. 5 (A) is the vertical view of housing shown in Figure 1, is (B) figure from the E-E direction indication housing of (A).
Fig. 6 means and pulls down rotor from motor shown in Figure 1, drive the figure with the state after coil, gear train, end plate and cover etc., (A) is vertical view, is (B) end view.
Fig. 7 (A) is the vertical view of support plate shown in Figure 2, is (B) end view of support plate shown in Figure 2.
Fig. 8 means the figure of cover shown in Figure 3, is (A) vertical view, is (B) front view, is (C) upward view, is (D) profile of the F-F section of (B).
Fig. 9 is the enlarged drawing of the G part in Fig. 3.
Figure 10 means the figure of the cover that other execution modes of the present invention relate to, and (A) is vertical view, is (B) front view, is (C) upward view, is (D) profile of the H-H section of (B).
Figure 11 replaces cover shown in Figure 8 and the enlarged drawing of G part when cover shown in Figure 10 has been installed, in Fig. 3.
(symbol description)
1 motor 2 motor body sections
3 reduction gearing section 4 housings
The 4b cylinder 4c of section notch
6 rotating shafts 7 drive uses magnet
8 rotors 10 drive uses coil
11 stator 13 gear trains
14 bolster 15 support plates
15a axle fixed part 15b substrate maintaining part
15c partition board portion 15d support projection
15f arm 15g abutting part
15h keeps groove 15j to keep projection
The front end face 15q projection of 15p abutting part
17 end plate 18 substrates
19 lead-in wire 27 wiring pins
28 portion of terminal X second directions
Z is axial for the Y first direction
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.
(summary of motor consists of)
Fig. 1 is the vertical view of the motor 1 that relates to of embodiments of the present invention.Fig. 2 is the sectional arrangement drawing be used to the internal structure that motor shown in Figure 11 is described.Fig. 3 is for the part sectioned view of the motor 1 of key diagram 1 from the side.Fig. 4 is the end view of pulling down the state after cover 20 from motor shown in Figure 11.Fig. 5 (A) is the vertical view of housing 4 shown in Figure 1, and Fig. 5 (B) is the figure from the E-E direction indication housing 4 of Fig. 5 (A).
The motor 1 of the manner is the stepping motor with decelerator, as shown in Figure 2, motor 1 possesses motor body section 2, reduction gearing section 3 and housing 4, wherein, reduction gearing section 3 is with the dynamic retarding of motor body section 2 and transmit, and housing 4 is accommodated motor body section 2 and reduction gearing section 3.
Motor body section 2 possesses rotor 8 and stator 11, wherein, rotor 8 has rotating shaft 6 and the driving magnet 7 that is fixed on rotating shaft 6, stator 11 has utmost point tooth 9 and drives with coil 10, utmost point tooth 9 drives to configure with the opposed mode of the outer peripheral face of magnet 7 with driving the outer circumferential side that is configured in utmost point tooth 9 with coil 10.
Reduction gearing section 3 possesses gear train 13 and support plate (la m) 15, wherein, gear train 13 is made of a plurality of gears and is connected with rotating shaft 6, is fixed with bolster 14 on support plate 15, and each gear that this bolster 14 will consist of gear train 13 is supported in the mode that can rotate.
In addition, in the following description, axial (above-below direction of Fig. 2~Fig. 4, the Z direction) of rotating shaft 6 is made as " above-below direction ".In addition, anti-outlet side (opposition side of outlet side) (downside of Fig. 2~Fig. 4) in above-below direction, that outlet side motor 1 (upside of Fig. 2~Fig. 4) is made as " upside ", motor 1 is made as " downside ".In addition, with radially being made as of rotating shaft 6 " radially ", the circumferencial direction of rotating shaft 6 is made as " circumferencial direction ".In the manner, upside is distolateral on axially, and downside be that another on axial is distolateral.
As shown in Figure 5, housing 4 be formed have bottom 4a and a cylinder 4b of section the round-ended cylinder shape roughly arranged, and, the upper end open of housing 4,4a bottom disposing in the lower end of housing 4.Be formed with notch 4c on the cylinder 4b of section, this notch 4c is used for the portion of terminal described later 28 that configuration consists of stator 11.Notch 4c forms towards the mode of downside with the cylinder 4b of section excision with the upper end from the cylinder 4b of section.The notch 4c of the manner be formed on above-below direction the bottom 4a near the position.In addition, the shape that is formed when radially observing of notch 4c is at the long roughly oblong-shaped of above-below direction.
In addition, be formed with through hole (omitting diagram in Fig. 5) on the 4a of bottom, the lower end side of fixed axis 22 described later is inserted logical and is fixed in this through hole by riveted joint.In addition, on the 4a of bottom, several utmost point teeth 9 in a plurality of utmost point teeth 9 form (omitting diagram in Fig. 5) in the mode that erects towards upside.
In addition, motor 1 possesses: end plate (end plate) 17, and it is fixed on the upper end of housing 4 in the mode with the upper end shutoff of housing 4; Substrate 18, it is fixed on portion of terminal 28 described later; Many lead-in wires 19, it is connected on substrate 18; Cover 20, it is arranged on housing 4 in the mode with portion of terminal 28 described later and substrate 18 coverings.
Be formed with the through hole 6a that connects on above-below direction on the radial center of rotating shaft 6, fixed axis 22 is inserted and is led in this through hole 6a.The lower end of fixed axis 22 is bearing on the bottom 4a of housing 4.Specifically, the lower end side of fixed axis 22 is inserted logical and is fixed in the through hole that is formed on the 4a of bottom by riveted joint.In addition, the upper end of fixed axis 22 is bearing on end plate 17.Rotating shaft 6 is bearing on fixed axis 22 in the mode that can rotate.The lower end of rotating shaft 6 (being specially the lower end of magnet installation portion 6b described later) and leaf spring 23 connect, and by the active force of leaf spring 23, rotating shaft 6 are applied power towards upside thus.
Lower end side at rotating shaft 6 is formed with the magnet installation portion 6b that magnet 7 is used in the installation driving.Be fixed with on the outer peripheral face of magnet installation portion 6b and be formed roughly driving cylindraceous magnet 7.The outer peripheral face that drives with magnet 7 is magnetized in the mode that forms two different magnetic poles on above-below direction.In addition, the upper portion of rotating shaft 6 is outstanding from stator 11.Upper end side at rotating shaft 6 is formed with gear 6c.
Stator 11 possesses two drivings coil 10 that the outer circumferential side of magnet 7 is used in the driving of being configured in.Two drivings configure in mode overlapping on above-below direction with coil 10.Driving is wound onto across coil rack 24,25 with coil 10 on the outer peripheral face of utmost point tooth 9, and wherein, coil rack 24,25 is formed flanged cylindric by insulative resin.Be formed with on coil rack 24,25 towards radial outside outstanding protuberance 24a, 25a.Protuberance 24a and protuberance 25a are formed on above-below direction and connect, thereby consist of terminal board 26 by protuberance 24a and protuberance 25a.
Terminal board 26 is configured in the approximate centre position on the above-below direction of stator 11.When the parallel direction of a direction that will make progress with the footpath that protuberance 24a, 25a give prominence to is made as " Y-direction ", will be when the above-below direction direction vertical with Y-direction be made as " directions X ", terminal board 26 at the width on directions X and notch 4c the width on directions X about equally, terminal board 26 from notch 4c by and further outstanding towards radial outside from the outer peripheral face of housing 4.
In the manner, Y-direction is the first direction parallel with the bearing of trend of the substrate maintaining part 15b described later that consists of support plate 15, directions X be with as the axial above-below direction of rotating shaft 6 with as the vertical second direction of the Y-direction of first direction.
Be fixed with six wiring pins (terminal pin) 27 on terminal board 26.As shown in Figure 2, wiring pin 27 is outstanding towards the outer circumferential side of motor 1 from terminal board 26.In addition, six wiring pins 27 are configured in a row on directions X.In the manner, a driving is made of two wires with coil 10, and, consist of two drivings and be electrically connected and be fixed on three wiring pins 27 in six wiring pins 27 with the end of two wires of coil 10 with a driving in coil 10.
Specifically, the coiling of a wire in two wires begins side end and is electrically connected and is fixed on a wiring pin 27, the coiling that the coiling of a wire in two wires finishes side end and another root wire begins side end and is electrically connected and is fixed on another wiring pin 27, and the coiling of another root wire finishes side end and is electrically connected and is fixed on wiring pin 27 of residue.
In addition, consist of two drivings and drive end with two wires of coil 10 with another in coils 10, and consist of the end of a driving with two wires of coil 10 and similarly be electrically connected and be fixed on three wiring pins 27 of six residues in wiring pin 27.In the manner, by terminal board 26 with are connected a wiring pin 27 and consist of the portion of terminal 28 that is connected with the end that drives with coil 10.
Support plate 15 is configured to connect with the upper surface of stator 11.Bolster 14 is to be fixed on support plate 15 towards upper side-prominent mode from support plate 15.That is, the gear train 13 that is made of a plurality of gears is configured in the upside of support plate 15, and wherein, a plurality of gears are supported on bolster 14 in the mode that can rotate.Consist of the input gear and the gear 6c engagement that is formed on rotating shaft 6 of gear train 13, the gear 29a engagement on the output gear that consists of gear train 13 and the output shaft 29 that is formed at motor 1.
In addition, gear train 13 possesses a plurality of idler gears that are configured between input gear and output gear.In the manner, each gear that consists of gear train 13 is formed by resin.Specifically, each gear of formation gear train 13 is formed by polyacetals (POM).Narrate after detailed formation about support plate 15.
End plate 17 is formed tabular.Be formed with bearing portion 17a and axle support 17b on end plate 17, wherein, bearing portion 17a is supported output shaft 29 in the mode that can rotate, and axle support 17b supports fixed axis 22.In addition, on end plate 17, to be formed with two installation teat 17c towards the outstanding mode of the outer circumferential side of housing 4, these two installations are used for motor 1 is installed to various device with teat 17c.And then, being formed with guide portion 17d on end plate 17, this guide portion 17d is used for as described later towards radial outside guiding lead-in wire 19.
The end plate 17 of the manner is formed by the metallic plate of steel plate etc., and form by the Punching Technology of utilizing punch press to carry out, thus, a face of end plate 17 becomes the face of the overlap side that produces burr, and another face of end plate 17 becomes the face of the angle of collapsing (rollover) side.For not to 19 injuries that go between, end plate 17 is fixed on the upper end of housing 4 in the supine mode of overlap side.In addition, in the situation that end plate 17 has been implemented attrition process that deburring uses etc., end plate 17 also can be fixed in the ventricumbent mode of overlap side the upper end of housing 4.
Guide portion 17d is formed towards the outstanding roughly oblong-shaped of radial outside.Specifically, guide portion 17d is formed towards the outstanding roughly oblong-shaped in the Y-direction outside.Guide portion 17d at the width on directions X and notch 4c the width on directions X about equally, guide portion 17d passes through from the upper part of notch 4c, and further outstanding towards radial outside from the outer peripheral face of housing 4.Be formed with two through hole 17e that connect end plate 17 on above-below direction on guide portion 17d.Two through hole 17e form with the state of the predetermined distance of being separated by on directions X.The shape of through hole 17e when observing from the above-below direction shape that is rectangle.
Both sides on the circumferencial direction of guide portion 17d root are formed with the recess 17f towards the circumferencial direction depression.As shown in Figure 1, the edge of the notch 4c of housing 4 embeds in recess 17f.Embed in recess 17f by the edge with notch 4c, thereby prevent that end plate 17 is with respect to housing 4 rotations.
Substrate 18 is rigid substrates of epoxy glass substrate etc., and is formed rectangular tabular.This substrate 18 is configured to and the above-below direction almost parallel.Specifically, substrate 18 is configured to and the ZX plane almost parallel that is formed by above-below direction (Z direction) and directions X.Six wiring pins 27 are inserted through substrate 18 from radially inner side, and substrate 18 is fixed on six wiring pins 27 by soldering.In addition, substrate 18 also is maintained on the substrate maintaining part 15b described later that is formed on support plate 15.
Lead-in wire 19 is fixed on the upper end side of substrate 18 by soldering.Insert the through hole that leads on being formed at substrate 18 from radially inner side one end of lead-in wire 19, and lead-in wire 19 is drawn from the radially inner side of substrate 18.In the manner, be fixed with five lead-in wires 19 on substrate 18.
Cover 20 will be as mentioned above further being arranged on housing 4 towards the mode that the outstanding portion of terminal 28 of radial outside and substrate 18 cover from the outer peripheral face of the cylinder 4b of section of housing 4.In addition, cover 20 is arranged on housing 4 in the mode that the notch 4c with housing 4 covers.Narrate after detailed formation about cover 20.
(formation of support plate)
Fig. 6 means and pulls down rotor 8 from motor shown in Figure 11, drive the figure with the state after coil 10, gear train 13, end plate 17 and cover 20 etc., (A) is vertical view, is (B) end view.Fig. 7 (A) is the vertical view of support plate 15 shown in Figure 2, and Fig. 7 (B) is the end view of support plate 15 shown in Figure 2.
Support plate 15 is formed by resin.Specifically, support plate 15 is formed by the material identical with each gear that consists of gear train 13.That is, support plate 15 is formed by polyacetals (POM).This support plate 15 possesses: the axle fixed part 15a of fixed-bearing axis 14, keep the substrate maintaining part 15b of substrate 18, with the partition board portion 15c of the upper end side shutoff of the notch 4c of housing 4 and two support projection 15d of bearing end plate 17.
Axle fixed part 15a is formed substantially vertical with above-below direction and is the tabular of circular.Be formed with in the center of axle fixed part 15a for rotating shaft 6 and insert logical axle inserting hole 15e.In addition, be formed with four fixing hole 15s of fixed-bearing axis 14 and the support holes 15t of supporting output shaft 29 on axle fixed part 15a.The upper surface of axle fixed part 15a and stator 11 connects.
Substrate maintaining part 15b is formed the bulk of extending towards radial outside from axle fixed part 15a.Specifically, substrate maintaining part 15b is formed the bulk of extending towards a side of Y-direction from axle fixed part 15a.In the following description, the front of substrate maintaining part 15b is made as " the Y-direction outside ", the end side of substrate maintaining part 15b is made as " Y-direction is inboard ".
Substrate maintaining part 15b at the width on directions X and notch 4c the width on directions X about equally, substrate maintaining part 15b from notch 4c by and further outstanding towards radial outside from the outer peripheral face of housing 4.Two ends on the directions X of substrate maintaining part 15b are formed with arm 15f, and this arm 15f is used for keeping substrate 18 from the both sides of directions X.That is, the two ends on the directions X of substrate maintaining part 15b are formed with respectively arm 15f, and this arm 15f is respectively used to keep the both ends on the directions X of substrate 18.Be formed with abutting part 15g between two arm 15f, the face of the radially inner side of this abutting part 15g and substrate 18 (being specially the face of the Y-direction inboard of substrate 18) 18a (medial surface 18a) connects.
Two arm 15f are formed mutual almost parallel, and are formed towards the outer circumferential side of motor 1 (be specially Y-direction the outside) and extend.Arm 15f can be on directions X strain.Front at arm 15f is formed with for the maintenance groove 15h that keeps substrate 18 and keeps projection 15j.Keep groove 15h to form in the mode of the depression outside directions X of the medial surface from the directions X of arm 15f, the end on the directions X of substrate 18 embeds and keeps in groove 15h.Keep projection 15j to consist of the fore-end of arm 15f, and form in the mode that is connected with maintenance groove 15h.
In addition, keep projection 15j to be formed along with expanding to directions X is inboard towards the Y-direction inboard.Face (lateral surface) 18b outside radially inner side end face (Y-direction inner side end) 15k (with reference to Fig. 7 (A)) of maintenance projection 15j and the Y-direction of substrate 18 connects.As shown in Fig. 7 (A), the medial extremity 15m on the directions X of radially inner side end face 15k be configured on directions X compare in arm 15f, be not formed with on the part 15n position more in the inner part that keeps groove 15h and keep projection 15j.
Abutting part 15g is formed towards the outstanding roughly cuboid of radial outside (be specially Y-direction outside the) block.The front end face 15p of abutting part 15g is formed with ZX parallel plane plane.The medial surface 18a of substrate 18 and the front end face 15p of abutting part 15g connect.That is, substrate 18 is between the front end face 15p of the radially inner side end face 15k that is sandwiched in maintenance projection 15j on Y-direction and abutting part 15g.
Substrate maintaining part 15b and portion of terminal 28 configure with the state of the predetermined distance of being separated by on above-below direction.In addition, substrate maintaining part 15b and portion of terminal 28 are overlapped when observing from above-below direction.In addition, the upper end side that is maintained at the substrate 18 on substrate maintaining part 15b from substrate maintaining part 15b further towards upper side-prominent.
Partition board portion 15c is formed from the outer circumference end of axle fixed part 15a and erects towards upside.Specifically, partition board portion 15c erects towards upside from the outer circumference end of axle fixed part 15a in the following manner, that is, the upper end of partition board portion 15c is configured on the position of the more top side in upper end of comparing a plurality of gears that consist of gear train 13.The shape of partition board portion 15c when observing from above-below direction is roughly circular-arc.Specifically, it is following such roughly circular-arc that the shape of partition board portion 15c when observing from above-below direction is, that is, the center of curvature of partition board portion 15c is roughly consistent with the center of curvature of the cylinder 4b of section of housing 4, and the radius of curvature of the radius of curvature of partition board portion 15c and the cylinder 4b of section about equally.
In addition, partition board portion 15c in a circumferential direction width and notch 4c width in a circumferential direction about equally.In the manner, the lower surface of the upper surface of partition board portion 15c and end plate 17 connects, and partition board portion 15c integrally carries out shutoff with in notch 4c, part that compare the more top side of axle fixed part 15a.
Two support projection 15d are formed from the outer circumference end of axle fixed part 15a and erect towards upside.In addition, two support projection 15d are 180 ° of compartment of terrains formation along circumferencial direction.The lower surface of the upper surface of support projection 15d and end plate 17 connects.In addition, on the upper surface of support projection 15d, to be formed with projection 15q towards upper side-prominent mode, this projection 15q is used in a circumferential direction end plate 17 being positioned.This projection 15q inserts in the through hole (omitting diagram) that leads on being formed at end plate 17.
(formation of cover)
Fig. 8 means the figure of cover shown in Figure 3 20, is (A) vertical view, is (B) front view, is (C) upward view, is (D) profile of the F-F section of (B).Fig. 9 is the enlarged drawing of the G part in Fig. 3.
Cover 20 integral body are formed the roughly cuboid box shape of radially inner side and upper side opening, and, cover 20 possesses flat base portion 20a, flat two side surface part 20b and flat bottom surface sections 20c, wherein, base portion 20a is with radially (to be specially Y-direction) vertical, two ends on the directions X of two side surface part 20b and base portion 20a are connected and are substantially vertical with directions X, and the lower end of bottom surface sections 20c and base portion 20a and the lower end of two side surface part 20b are connected and are substantially vertical with above-below direction.
Lateral surface on the Y-direction of base portion 20a formation cover 20, the two sides on the directions X of two side surface part 20b formation covers 20, bottom surface sections 20c consists of the lower surface of cover 20.
Be formed with for the 19 notch 20d that draw towards radial outside that will go between in the upper end side of base portion 20a, wherein, lead-in wire 19 is connected on the substrate 18 that tegmentum parts 20 cover.In addition, upper end side at base portion 20a is formed with protuberance 20e and two holding section 20f, wherein, protuberance 20e is outstanding towards radially inner side (be specially Y-direction inboard), and two holding section 20f engage with through hole 17e on the guide portion 17d that is formed at end plate 17.
Notch 20d forms towards the mode of downside with base portion 20a excision with the upper end from base portion 20a.In addition, notch 20d is formed on the center position on the directions X of base portion 20a.The shape of notch 20d when radially observing is roughly oblong-shaped.The width of notch 20d on above-below direction is greater than the external diameter of lead-in wire 19.In addition, notch 20d forms at the width on directions X and can make five lead-in wire 19 sizes of passing through that configure side by side on directions X.
As shown in Fig. 8 (B), protuberance 20e is formed from the lower end of notch 20d side-prominent in Y-direction.In addition, protuberance 20e is formed following such tabular, and is namely substantially vertical with above-below direction, and the shape when observing from above-below direction is roughly oblong-shaped.This protuberance 20e is configured in the position of the more top side of upper surface 18c of comparing substrate 18, and wherein, substrate 18 is maintained on substrate maintaining part 15b and portion of terminal 28.
As shown in Figure 9, the medial extremity 20g that the footpath of protuberance 20e makes progress is configured on the medial surface 18a position more in the inner part of comparing substrate 18 diametrically, and the upper surface 18c that protuberance 20e is formed diametrically with substrate 18 covers fully.Therefore, suppose to be maintained at substrate 18 on substrate maintaining part 15b and portion of terminal 28 when upside is moved, the upper surface 18c of substrate 18 can connect with the lower surface 20h of protuberance 20e.
Holding section 20f is formed from the upper end of base portion 20a outstanding towards radially inner side.Two holding section 20f are formed at respectively the both sides on the directions X of notch 20d.Be formed with engaging protuberance 20j on the leading section of holding section 20f, this engaging protuberance 20j is inserted in the through hole 17e of guide portion 17d and engages with through hole 17e.Engaging protuberance 20j is to form towards upper side-prominent mode.The lateral surface 20k that the footpath of engaging protuberance 20j makes progress is formed plane with the above-below direction almost parallel, the medial surface 20m that the footpath of engaging protuberance 20j makes progress be formed along with towards the below and to radially inner side tilt plane.The lower surface of the upper surface of other parts except engaging protuberance 20j of holding section 20f and the guide portion 17d of end plate 17 connects.
As shown in Figure 9, on the face of the radially inner side of base portion 20a, be formed with recess 20n in the mode towards the radial outside depression, this recess 20n is used for preventing that the soldering part 31 of substrate 18 and lead-in wire 19 and soldering part 32 and the base portion 20a of substrate 18 and wiring pin 27 from disturbing.
The inner face 20p that the footpath of side surface part 20b makes progress is formed the curved surface shape, thereby can connect with the outer peripheral face of the cylinder 4b of section of housing 4.That is, as shown in Fig. 8 (A), (C), the shape of the inner face 20p when observing from above-below direction is roughly circular-arc.Specifically, it is following such roughly circular-arc that the shape of inner face 20p when observing from above-below direction is, namely, the center of curvature of inner face 20p is roughly consistent with the center of curvature of the outer peripheral face of the cylinder 4b of section, and the radius of curvature of the outer peripheral face of the radius of curvature of inner face 20p and the cylinder 4b of section about equally.
In addition, the inner face 20q that the footpath of bottom surface sections 20c makes progress also is formed the curved surface shape, thereby can connect with the outer peripheral face of the cylinder 4b of section of housing 4.Namely, as shown in Fig. 8 (A), (C), it is following such roughly circular-arc that the shape of inner face 20q when observing from above-below direction is, namely, the center of curvature of inner face 20q is roughly consistent with the center of curvature of the outer peripheral face of the cylinder 4b of section, and the radius of curvature of the outer peripheral face of the radius of curvature of inner face 20q and the cylinder 4b of section about equally.
Be formed with two holding section 20r that engage with the notch 4c of housing 4 on bottom surface sections 20c.Two holding section 20r are respectively formed at the both ends on the circumferencial direction of inner face 20q.In addition, holding section 20r is formed towards radially inner side outstanding a little.The leading section of holding section 20r (radially inner side end) 20s is formed towards the downside slight curvature.Holding section 20r engages with the bight 4d (with reference to Fig. 5) of the lower edge of notch 4c.
The lateral surface 20t that the footpath of the leading section 20s of holding section 20r makes progress is formed the curved surface shape, thereby can connect with the inner peripheral surface of the cylinder 4b of section of housing 4.Namely, as shown in Fig. 8 (C), it is following such roughly circular-arc that the shape of lateral surface 20t when observing from above-below direction is, namely, the center of curvature of lateral surface 20t is roughly consistent with the center of curvature of the inner peripheral surface of the cylinder 4b of section, and the radius of curvature of the inner peripheral surface of the radius of curvature of lateral surface 20t and the cylinder 4b of section about equally.In addition, as shown in Fig. 8 (A), (C), the medial surface 20u that the footpath of the leading section 20s of holding section 20r makes progress also is formed the curved surface shape.
In the manner, by holding section 20f is fastened in the through hole 17e of end plate 17, and holding section 20r is fastened on the bight 4d of lower edge of notch 4c, thereby cover 20 is arranged on housing 4.As mentioned above, cover 20 covers substrate 18 and portion of terminal 28 and the notch 4c of housing 4 is covered.
(configuration of lead-in wire)
As mentioned above, lead-in wire 19 is fixed on the upper end side of substrate 18 by soldering, and is drawn from the radially inner side of substrate 18.As shown in Figure 9, from the derivative lead-in wire 19 of the radially inner side of substrate 18, drawn towards upside between 15 partition board portion 15c and substrate 18 and between the protuberance 20e of partition board portion 15c and cover 20 along partition board portion 15c from support plate.
In addition, the lead-in wire 19 of being drawn towards upside is being approximate right angle ground after radial outside is bent, thus from the notch 20d of cover 20 by being drawn towards radial outside.That is, the lead-in wire 19 of being drawn towards upside is drawn towards radial outside from notch 20d being approximate right angle ground after radial outside is bent.At this moment, lead-in wire 19 passes through between the lower surface of the guide portion 17d of the upper surface of the protuberance 20e of cover 20 and end plate 17, thereby is highlighted the 20e of section and guide portion 17d guides radial outside into.
In addition, the distance between the lower surface of the upper surface of protuberance 20e and guide portion 17d is greater than the external diameter of lead-in wire 19, and thus as shown in Figure 9, lead-in wire 19 is not highlighted the upper surface of the 20e of section and the lower surface of guide portion 17d is clamped.Therefore, when usually using, can not act on lead-in wire 19 from the power of protuberance 20e with from the power of guide portion 17d.
In addition, the medial extremity 20g beeline diametrically of partition board portion 15c and protuberance 20e is greater than the external diameter of lead-in wire 19, and thus as shown in Figure 9, lead-in wire 19 is not clamped by the medial extremity 20g of partition board portion 15c and protuberance 20e.Therefore, when usually using, can not act on lead-in wire 19 from the power of partition board portion 15c with from the power of the medial extremity 20g of protuberance 20e.
(assembling procedure of motor)
In above such motor that consists of 1, at first, assemble rotor 8 is also assembled stator 11, and rotor 8 and stator 11 is configured to the inside of housing 4.Then, the support plate 15 that is fixed with bolster 14 is configured in the upside of stator 11, and each gear that will consist of gear train 13 is arranged on bolster 14.Then, end plate 17 is fixed on the upper end of housing 4.Under this state, gear train 13 is covered fully by the partition board portion 15c of the cylinder 4b of section of housing 4, support plate 15 and end plate 17.
Then, wiring pin 27 is inserted led in the substrate 18 that is fixed with lead-in wire 19, and substrate 18 is remained on substrate maintaining part 15b.Be that wiring pin 27 is inserted under the state of logical substrates 18 specifically, the outside of substrate 18 from circumferencial direction embedded the maintenance groove 15h of arm 15f.Thereby due to support plate 15 is formed by resin can strain, therefore, in the time of in the maintenance groove 15h that substrate 18 is embedded arm 15f, two arm 15f after opening towards the direction that is separated from each other immediate recovery to original state.
Under this state, with substrate 18 solderings on wiring pin 27.Then, cover 20 is arranged on housing 4.At this moment, will go between 19 along partition board portion 15c from support plate between 15 partition board portion 15c and substrate 18 and between the protuberance 20e of partition board portion 15c and cover 20 after upside is drawn, to go between 19 is approximate right angle ground towards the radial outside bending, and along the guide portion 17d of end plate 17 and the 19 notch 20d from cover 20 that will go between draw towards radial outside.
(the main effect of the manner)
As described above, in the manner, be formed with the partition board portion 15c with the upper end side shutoff of the notch 4c of housing 4 on support plate 15.Therefore, in the manner, when support plate 15 was configured to the inside of housing 4, the upper end side of notch 4c was by partition board portion 15c shutoff.That is, in the manner, when support plate 15 being configured in the upside of stator 11, and each gear that will consist of gear train 13 is when being arranged on bolster 14, and the radial outside of gear train 13 is surrounded by the cylinder 4b of section of housing 4 and partition board portion 15c.
Therefore, in the manner, when assembling motor 1, even in support plate 15 is configured to housing 4 and after gear train 13 has been installed, cover 20 is arranged on housing 4, can prevent that also the foreign matter such as rubbish from entering into the part that disposes gear train 13 in housing 4.Namely, in the manner, when assembling motor 1, even cover 20 is not arranged on housing 4, can prevent that also foreign matter from entering into the part that disposes gear train 13 in housing 4 in support plate 15 is configured to housing 4 and before mounting teeth train 13.
For example, when the soldering operation of carrying out substrate 18, even in the situation that during support plate 15 is configured to housing 4 and each gear that will consist of gear train 13 carry out the soldering operation of substrate 18 after being arranged on bolster 14, can prevent that also foreign matter from entering into the part that disposes gear train 13 in housing 4.Consequently, in the manner, when assembling motor 1, can prevent that foreign matter from entering into the part that disposes gear train 13 in housing 4, thereby can improve the degree of freedom of the assembling procedure of motor 1.
In addition, in the manner, when the soldering operation of carrying out substrate 18, even in the situation that during support plate 15 is configured to housing 4 and each gear that will consist of gear train 13 carry out the soldering operation of substrate 18 after being arranged on bolster 14, can prevent that the foreign matter such as rubbish from entering into the part that disposes gear train 13 in housing 4, therefore, also can prevent from causing gear train 13 to sustain damage because of the foreign matter such as rubbish.
In addition, in the manner, because being is arranged on bolster 14 at each gear that will consist of gear train 13, and end plate 17 is fixed on the substrate 18 of mounting strap lead-in wire 19 after the upper end of housing 4, therefore, when being fixed to the upper end of housing 4 when gear being installed on bolster 14 or with end plate 17, lead-in wire 19 can not become the obstacle of above-mentioned operation.Therefore, in the manner, it is easy that the assembling operation of motor 1 becomes.
In the manner, it is following such roughly circular-arc that the shape of partition board portion 15c when observing from above-below direction is, that is, the center of curvature of partition board portion 15c is roughly consistent with the center of curvature of the cylinder 4b of section of housing 4, and the radius of curvature of the radius of curvature of partition board portion 15c and the cylinder 4b of section about equally.Therefore, in the manner, be formed with partition board portion 15c the flat situation of notch 4c shutoff is compared, can guarantee the configuration space of gear train 13.
In the manner, be formed with the substrate maintaining part 15b that keeps substrate 18 on support plate 15, thereby can keep substrate 18 with the support plate 15 that is fixed with bolster 14.Therefore, in the manner, compare with the situation of the parts that are provided in addition keeping substrate 18, can simplify the formation of motor 1.
In the manner, substrate 18 is fixed on six wiring pins 27 and by substrate maintaining part 15b and keeps.Therefore, in the manner, can improve the constant intensity of substrate 18.In addition, in the manner, due to be under the state that substrate 18 is remained on substrate maintaining part 15b with substrate 18 solderings on wiring pin 27, therefore, when substrate 18 solderings are to the wiring pin 27, can utilize substrate maintaining part 15b that substrate 18 is positioned.Therefore, in the manner, can utilize substrate maintaining part 15b to prevent that substrate 18 from rocking with respect to wiring pin 27, consequently, the soldering operation of substrate 18 solderings on wiring pin 27 be become easy.
In the manner, lead-in wire 19 is drawn towards upside between 15 partition board portion 15c and substrate 18 and between the protuberance 20e of partition board portion 15c and cover 20 along partition board portion 15c from support plate.Therefore, in the manner, can use partition board portion 15c will go between aptly and 19 draw towards upside.In addition, in the manner, can prevent that the lead-in wire 19 of being drawn towards upside from disturbing with gear train 13 with partition board portion 15c.
In the manner, lead-in wire 19 be drawn towards upside and by bending after, the notch 20d along the guide portion 17d of end plate 17 from cover 20 is drawn towards radial outside.Therefore, in the manner, when lead-in wire 19 was pulled, lead-in wire 19 came in contact with end plate 17 or cover 20.Specifically, when lead-in wire 19 was pulled, lead-in wire 19 came in contact with the lower surface of guide portion 17d or the medial extremity 20g of protuberance 20e, and thus, the movement of lead-in wire 19 is limited.Therefore, in the manner, the pulling force when lead-in wire 19 is pulled is difficult to directly act on the coupling part of substrate 18 and lead-in wire 19.Consequently, in the manner, when 19 quilts that can suppress to go between pull, lead-in wire 19 comes off from substrate 18.
In addition, in the manner, the upper surface 18c that the protuberance 20e of cover 20 is formed diametrically with substrate 18 covers fully, and, as mentioned above, suppose to be maintained at substrate 18 on substrate maintaining part 15b and portion of terminal 28 when upside is moved, the upper surface 18c of substrate 18 can connect with the lower surface 20h of protuberance 20e.Therefore, in the manner, the pulling force in the time of can utilizing the lower surface 20h of protuberance 20e to bear lead-in wire 19 to be pulled, thus 19 lead-in wires 19 when being pulled that can effectively suppress to go between come off from substrate 18.
In the manner, by holding section 20f is fastened in the through hole 17e of end plate 17, and holding section 20r is fastened on the bight 4d of lower edge of notch 4c, thereby cover 20 is arranged on housing 4.Therefore, in the manner, can utilize holding section 20f and holding section 20r reliably cover 20 to be arranged on housing 4 and end plate 17.In addition, in the manner, by the fastening state releasing with through hole 17e and holding section 20f, and the fastening state of bight 4d and holding section 20r is removed, can easily be pulled down cover 20 from housing 4.
(other execution modes)
Aforesaid way is an example of suitable way of the present invention, and still, the present invention is not limited to aforesaid way, can carry out various distortion and implement in the scope that does not change main idea of the present invention.
In aforesaid way, upper end side at the base portion 20a of cover 20 is formed with notch 20d, this notch 20d is used for going between and 19 draws towards radial outside, and, lead-in wire 19 be drawn towards upside and by bending after, the notch 20d along the guide portion 17d of end plate 17 from cover 20 is drawn towards radial outside.In addition for example, as shown in Figure 10,11, also can replace notch 20d and be formed with for the 19 fairlead 20v that draw towards radial outside that will go between in the upper end side of base portion 20a, and, lead-in wire 19 is drawn towards radial outside from fairlead 20v after being drawn towards upside and being bent.
Fairlead 20v is formed and connects diametrically base portion 20a, and in addition, fairlead 20v is formed on the center position on the directions X of base portion 20a.The formation of fairlead 20v when radially observing is roughly oblong-shaped.The width of fairlead 20v on above-below direction is greater than the external diameter of lead-in wire 19.In addition, fairlead 20v forms at the width on directions X and can make five lead-in wire 19 sizes of passing through that configure side by side on directions X.
Even form fairlead 20v in the situation that replace notch 20d, also be formed with protuberance 20e with the lower end from fairlead 20v towards the outstanding mode of radially inner side.In addition, in this situation, be formed with protuberance 20w with the upper end from fairlead 20v towards the outstanding mode of radially inner side.The effect of the lead-in wire 19 that protuberance 20e, 20w performance is passed through from fairlead 20v towards radial outside guiding.In addition, in Figure 10, Figure 11, give identical symbol for the formation identical with aforesaid way.
In aforesaid way, substrate 18 is fixed on portion of terminal 28, and lead-in wire 19 is connected on substrate 18, and cover 20 is with substrate 18 with portion of terminal 28 covers and the mode that the notch 4c of housing 4 covers is arranged on housing 4.In addition for example; also can be as the motor that patent documentation 1 is put down in writing; connector section and the protective cover that is coated in connector section are arranged on housing 4 in the mode that the notch 4c with housing 4 covers; wherein, connector section has via wiring substrate and is connected electrically in the bonder terminal on wiring pin 27 and keeps the connector shell of this bonder terminal.
In aforesaid way, it is following such roughly circular-arc that the shape of partition board portion 15c when observing from above-below direction is, that is, the center of curvature of partition board portion 15c is roughly consistent with the center of curvature of the cylinder 4b of section of housing 4, and the radius of curvature of the radius of curvature of partition board portion 15c and the cylinder 4b of section about equally.In addition for example, partition board portion 15c also can form the tabular with notch 4c shutoff.That is, the shape of the partition board portion 15c when observing from above-below direction can be also to ask each other with the edge of notch 4c the roughly linearity that is connected.
In aforesaid way, be formed with protuberance 20e on cover 20, still, also can not form protuberance 20e on cover 20.In addition, in aforesaid way, be formed with substrate maintaining part 15b on support plate 15, still, also can not form substrate maintaining part 15b on support plate 15.
In aforesaid way, be fixed with bolster 14 on support plate 15, each gear that this bolster 14 will consist of gear train 13 is supported in the mode that can rotate.In addition for example, can be also that the bolster (rotating shaft) that together rotates with each gear that consists of gear train 13 is supported on support plate 15 in the mode that can rotate.In addition, in aforesaid way, support plate 15 is formed by resin, and still, support plate 15 also can be formed by metal.In addition, in aforesaid way, substrate 18 is configured to and the above-below direction almost parallel, and still, substrate 18 also can be configured to tilt with respect to above-below direction.

Claims (18)

1. motor is characterized in that possessing:
Motor body section;
Reduction gearing section, it is with the dynamic retarding of described motor body section and transmit; And
Housing, it accommodates described motor body section and described reduction gearing section,
Described motor body section possesses rotor and stator, and wherein, described rotor has rotating shaft and is fixed on driving magnet on described rotating shaft, and described stator has and drives use coil and the portion of terminal that is connected with overhang with described driving,
Described reduction gearing section possesses gear train and support plate, wherein, described gear train is made of a plurality of gears and is connected with described rotating shaft, be fixed with the bolster that described gear is supported in the mode that can rotate on described support plate, perhaps, described support plate supports the bolster that together rotates with described gear in the mode that can rotate
On described housing, with from described housing, described rotating shaft axially on an end be formed with notch towards another distolateral mode with described housing excision, wherein, described notch is used for configuring described portion of terminal,
Described gear train is configured in described support plate described distolateral on axially,
Described support plate is configured in described stator described distolateral on axially,
On described support plate, to be formed with partition board portion towards a described axial distolateral mode that erects, wherein, described partition board portion is with at least a portion shutoff of described notch.
2. motor as claimed in claim 1, is characterized in that,
Described housing possesses the cylinder cylindraceous section of being formed,
Described notch is formed from the described end on axially of described cylinder section and distolateral described cylinder section is excised towards another,
Described partition board portion is formed from described end on observation the time: the center of curvature of described partition board portion is consistent with the center of curvature of described cylinder section, and it is circular-arc that the radius of curvature of described partition board portion equates with the radius of curvature of described cylinder section.
3. motor as claimed in claim 1 or 2, is characterized in that,
A described end on axially of described partition board portion be configured in compare a plurality of described gears a described end on axially more by on described axial one distolateral position.
4. motor as claimed in claim 1 or 2, is characterized in that,
The standby end plate of described electric tools, wherein, the described end on axially that described end plate is fixed on described housing in the mode of the opening shutoff of the described end on axially that will be formed at described housing,
Described support plate possesses the axle fixed part, wherein, is fixed with described bolster on described axle fixed part, and perhaps, described axle fixed part supports described bolster in the mode that can rotate,
Described partition board portion is formed from the outer circumference end of described axle fixed part towards described axial distolateral erecting,
Other end on a described end face on axially of described partition board portion and described end plate described axial connects,
Described partition board portion with in described notch, compare described axle fixed part and more integrally carry out shutoff by a described axial distolateral part.
5. motor as claimed in claim 1 or 2, is characterized in that,
The standby substrate that is fixed on described portion of terminal of described electric tools,
On described support plate, the mode of extending with the radial outside towards described rotating shaft is formed with the substrate maintaining part that keeps described substrate.
6. motor as claimed in claim 5, is characterized in that,
When the direction parallel with the bearing of trend of described substrate maintaining part is made as first direction, to be made as second direction with described axial and direction that described first direction is vertical, end side on the described first direction of described substrate maintaining part is made as the inboard of first direction, when the front on the described first direction of described substrate maintaining part is made as the outside of first direction
Both end sides on the described second direction of described substrate maintaining part is formed with arm in the mode of extending towards the outside of described first direction respectively, and wherein, described arm is respectively used to keep the both ends on the described second direction of described substrate.
7. motor as claimed in claim 6, is characterized in that,
Between the described arm that is formed at respectively the both end sides on the described second direction of described substrate maintaining part, be formed with the abutting part that the medial surface on the described first direction with described substrate connects.
8. motor as claimed in claim 7, is characterized in that,
The front end face of described abutting part be formed with by described axial and that described second direction consists of is parallel plane plane,
Medial surface on the described front end face of described abutting part and the described first direction of described substrate connects.
9. motor as claimed in claim 6, is characterized in that,
Described support plate is formed by resin,
Described arm can be on described second direction strain.
10. motor as claimed in claim 6, is characterized in that,
Front at described arm is formed with the maintenance groove, and wherein, described maintenance groove caves in toward the outer side from the medial surface on the described second direction of described arm,
End on the described second direction of described substrate embeds in described maintenance groove.
11. motor as claimed in claim 6 is characterized in that,
Front end at described arm is formed with the maintenance projection, and wherein, described maintenance projection is along with towards the inboard of described first direction and the inboard expansion on the described second direction of described arm,
Lateral surface on medial surface on the described first direction of described maintenance projection and the described first direction of described substrate connects.
12. motor as claimed in claim 6 is characterized in that,
Described support plate is formed by resin,
Described arm can be on described second direction strain,
Front at described arm is formed with the maintenance groove, and wherein, described maintenance groove caves in toward the outer side from the medial surface on the described second direction of described arm,
Front end at described arm is formed with the maintenance projection, and wherein, described maintenance projection is along with towards the inboard of described first direction and the inboard expansion on the described second direction of described arm,
End on the described second direction of described substrate embeds in described maintenance groove,
Lateral surface on medial surface on the described first direction of described maintenance projection and the described first direction of described substrate connects,
Between the described arm that is formed at respectively the both end sides on the described second direction of described substrate maintaining part, be formed with the abutting part that the medial surface on the described first direction with described substrate connects,
The front end face of described abutting part be formed with by described axial and that described second direction consists of is parallel plane plane,
Medial surface on the described front end face of described abutting part and the described first direction of described substrate connects.
13. motor as claimed in claim 5 is characterized in that,
When the direction parallel with the bearing of trend of described substrate maintaining part is made as first direction, in the time of will being made as second direction with described axial and direction that described first direction is vertical,
Described portion of terminal possesses a plurality of wiring pins, and wherein, a plurality of described wiring pins are configured in a row on described second direction, and described substrate is fixed on a plurality of described wiring pins by soldering,
Described substrate is held by a plurality of described wiring pins and described substrate maintaining part.
14. motor as claimed in claim 5 is characterized in that,
Described portion of terminal and described substrate maintaining part are configuring at the state of the described predetermined distance of being separated by on axially, and described portion of terminal and described substrate maintaining part are overlapped from described end on observation the time.
15. motor as claimed in claim 5 is characterized in that,
The standby lead-in wire that is connected on described substrate of described electric tools,
Described lead-in wire along described partition board portion towards described axial distolateral being drawn.
16. motor as claimed in claim 15 is characterized in that,
One on axially of described substrate described distolaterally compared described substrate maintaining part further towards described axial one distolateral outstanding,
Described lead-in wire be between described partition board portion and described substrate towards described axial distolateral being drawn.
17. motor as described in claim 15 or 16 is characterized in that,
The standby end plate of described electric tools, wherein, the described end on axially that described end plate is fixed on described housing in the mode of the opening shutoff of the described end on axially that will be formed at described housing,
Described end plate forms by the Punching Technology of utilizing punch press to carry out, and described end plate is with a described end on axially that is fixed on described housing facing to a described axial distolateral mode of the overlap side that produces burr.
18. motor as claimed in claim 1 or 2 is characterized in that,
The standby end plate of described electric tools, wherein, the described end on axially that described end plate is fixed on described housing in the mode of the opening shutoff of the described end on axially that will be formed at described housing,
On described support plate, being formed with a plurality of support projection of the described end plate of supporting towards a described axial distolateral mode that erects,
Be formed with projection on a described end face on axially of described support projection, wherein, described projection is used on the circumferencial direction of described rotating shaft, described end plate being positioned.
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JPH0549214A (en) * 1991-08-09 1993-02-26 Fuji Electric Co Ltd Grease-lubricated reduction gear and operating method thereof
CN1157499A (en) * 1995-12-05 1997-08-20 株式会社三协精机制作所 Electric motor
US6509661B1 (en) * 1999-01-14 2003-01-21 Asmo Co., Ltd. Motor and actuator
CN101924452A (en) * 2009-06-11 2010-12-22 日本电产三协株式会社 Motor and manufacture method thereof
CN202957705U (en) * 2011-12-20 2013-05-29 日本电产三协株式会社 Motor

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