CN103780015A - Geared motor - Google Patents

Geared motor Download PDF

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Publication number
CN103780015A
CN103780015A CN201310495387.8A CN201310495387A CN103780015A CN 103780015 A CN103780015 A CN 103780015A CN 201310495387 A CN201310495387 A CN 201310495387A CN 103780015 A CN103780015 A CN 103780015A
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CN
China
Prior art keywords
gear
output shaft
limiting unit
lid
side limiting
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Granted
Application number
CN201310495387.8A
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Chinese (zh)
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CN103780015B (en
Inventor
有贺久刚
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Nidec Sankyo Corp
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Nidec Sankyo Corp
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Publication of CN103780015A publication Critical patent/CN103780015A/en
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Publication of CN103780015B publication Critical patent/CN103780015B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel

Abstract

Provided is a geared motor which can position an output shaft on a specified angular position. The geared motor (1) comprises a DC motor (2), an output gear (Gf), and an angular sensor (150) which detect rotation angle of the output gear (Gf), so that a toilet seat connected with the output gear (Gf) rotates, and the toilet seat does reciprocating motion between an open position and a closed position. The DC motor (2), the output gear (Gf), and gears (G2-G4) of a reduction gear group are disposed in a housing (7) which is formed by overlapping a lower housing (70) and an upper housing (30) on an axis (Xa) of the output gear (Gf). A limiting portion (257) disposed on the output gear (Gf) limits rotation range of the output gear (Gf) through abutting with a fixing side limiting portion of the lower housing (70). When the toilet seat reaches the specific position on the closed position side, the limiting portion (257) is abutted against with the fixing side limiting portion.

Description

Gear motor
Technical field
The present invention relates to a kind of gear motor.
Background technology
In patent documentation 1, the automatic switch device (gear motor) of a kind of toilet seat and toilet cover is disclosed.
Patent documentation 1: Japanese Patent Laid-Open 2002-219076 communique
In the automatic switch device of patent documentation 1, the output rotation of motor is passed to output shaft via reducing gear, to drive the toilet seat, the toilet cover (lid) that are connected with this output shaft to open and close.This automatic switch device has the variable resistance that the angle position of the output shaft to connecting toilet seat, toilet cover is detected, according to the output signal of this variable resistance, the angle position of toilet seat, toilet cover is determined, and the rotary actuation of output shaft to motor is controlled.
For example, in the situation that making toilet seat, toilet cover turn to closed condition from open mode, in the time having determined that according to the output signal of variable resistance toilet seat, toilet cover arrive the stop position (off-position) of regulation, motor is stopped, to stop the rotation of output shaft.
, close in order to control exactly opening of toilet seat, toilet cover herein, in the time that variable resistance is assembled in automatic switch device, need set exactly the corresponding relation of the angle position of variable resistance and output shaft.For example, in the situation that toilet seat and toilet cover are made as to benchmark during in closed condition, need the angle position in the time output shaft being positioned to toilet seat, toilet cover in closed condition after, assembling variable resistance.But, in the automatic switch device of patent documentation 1, do not comprise the element that output shaft is positioned, therefore, need use other element of preparation separately etc., output shaft is positioned to the angle position of regulation.
Summary of the invention
Therefore, wish a kind of gear motor of the angle position that output shaft can be positioned to regulation.
Gear motor of the present invention comprises: motor, output shaft, train of reduction gears, the output rotation of above-mentioned motor is passed to above-mentioned output shaft by this train of reduction gears, and angular transducer, this angular transducer utilization detects the rotational angle of above-mentioned output shaft with the sensor gear that any gear in above-mentioned train of reduction gears engages, the lid being connected with above-mentioned output shaft is rotated, so that above-mentioned lid reciprocating motion between open position and off-position, the feature of said gear motor is, above-mentioned motor, above-mentioned output shaft and above-mentioned reduction gearing are mounted on the first housing and the second housing overlapping and body shell that forms in the axial direction of above-mentioned output shaft, from above-mentioned motor till any gear the power transfer path of above-mentioned output shaft is provided with rotating side limiting unit, this rotating side limiting unit is by limiting the energy slewing area of above-mentioned output shaft with the fixation side limiting unit butt of being located at aforementioned body housing, above-mentioned fixation side limiting unit has: the first fixation side limiting unit, when above-mentioned output shaft is in the time that its rotating shaft is rotated towards a direction, this the first fixation side limiting unit and above-mentioned rotating side limiting unit butt, and the second fixation side limiting unit, when above-mentioned output shaft is in the time that its rotating shaft is rotated to another way, this the second fixation side limiting unit and above-mentioned rotating side limiting unit butt, above-mentioned the first fixation side limiting unit is the fixation side limiting unit relation that above-mentioned output shaft and above-mentioned lid make above-mentioned lid rotate towards above-mentioned off-position from above-mentioned open position with the rotation of an above-mentioned direction of above-mentioned output shaft situation about linking together, above-mentioned the second fixation side limiting unit is the fixation side limiting unit relation that above-mentioned output shaft and above-mentioned lid make above-mentioned lid rotate towards above-mentioned off-position from above-mentioned open position with the rotation of above-mentioned another direction of above-mentioned output shaft situation about linking together, by the set positions of above-mentioned the first fixation side limiting unit and above-mentioned the second fixation side limiting unit for upper/lower positions: be no matter the relation that with the rotation of an above-mentioned direction of above-mentioned output shaft, above-mentioned lid rotated towards above-mentioned off-position from above-mentioned open position at above-mentioned output shaft and above-mentioned lid links together, or the relation that with the rotation of above-mentioned another direction of above-mentioned output shaft, above-mentioned lid is rotated towards above-mentioned off-position from above-mentioned open position at above-mentioned output shaft and above-mentioned lid links together, all can be in the time that above-mentioned lid arrives the assigned position of above-mentioned off-position side, make the above-mentioned rotating side limiting unit first fixation side limiting unit corresponding with difference, the second fixation side limiting unit butt.
According to the present invention, no matter around its rotating shaft towards a direction rotation in the situation that at output shaft, or at output shaft in the situation that its rotating shaft is rotated to another way, in the time that lid arrives the assigned position of off-position side, rotating side limiting unit all can stop with fixation side limiting unit (the first fixation side limiting unit and the second fixation side limiting unit) butt the rotation of output shaft.Thus, make output shaft rotation to the position of rotating side limiting unit and fixation side limiting unit butt, by sensor gear is engaged with any gear of train of reduction gears, can assemble the transducer that the anglec of rotation of output shaft is detected associatedly with the assigned position of the off-position side of lid.By this, can under identical conditions, set all the time the angle position of output shaft (lid) and the angle position that transducer detects.
Accompanying drawing explanation
Fig. 1 is the stereogram that represents the outward appearance of the gear motor of execution mode.
Fig. 2 is the exploded perspective view of gear motor.
Fig. 3 is the gear train expanded view of gear motor.
Fig. 4 is the vertical view of lid being pulled down to the gear motor of rear expression.
Fig. 5 is the stereogram of lid.
Fig. 6 is the vertical view the state after the housing of gear motor is pulled down lid.
Fig. 7 is the vertical view the state after the housing of gear motor is pulled down lid, angular transducer and the first gear.
Fig. 8 is the stereogram of upper shell.
Fig. 9 is the major part cutaway view of housing.
Figure 10 is the upward view of shell from lower casing unilateral observation.
Figure 11 is the A-A cutaway view of Figure 10.
Figure 12 is the stereogram of lower casing.
Figure 13 is the vertical view of lower casing.
Figure 14 is the vertical view of explanation torque limiter.
Figure 15 is the figure of explanation output gear.
Figure 16 is the figure of explanation spring towards the installation of output gear.
Figure 17 is the figure of explanation spring towards the installation of output gear.
Figure 18 is the figure of the scope of application of explanation output gear.
Figure 19 is the upper shell figure of the mounting of shell down of explanation.
Figure 20 is the major part cutaway view of housing.
Figure 21 is the major part cutaway view of housing.
Figure 22 is the major part cutaway view of housing.
(symbol description)
1 gear motor
2 DC motor
2a upper end
3 motor reels
5 train of reduction gears
7 housings
8 screws
9 screws
10 lids
10a inclined plane
11 upper wall portions
11a breach recess
11b connector is dodged portion
11b1 bight
12 (121,122,123,124) side wall portion
122a～124a stage portion
125 projection pieces
125a stage portion
13 installation portions
131 diapires
131a through hole
132 arcuation wall portions
14 flange parts
14a through hole
15 dodge hole
16 cylindrical walls
16a through hole
16b accepting hole
16c diapire
161 axle sleeves (minor diameter part)
162 large-diameter portions
17 shaft sleeve part
171 alignment pins
172 base portions
18 press axle sleeve
19 press axle sleeve
20 supporting sleeves
20a axis hole
21 axis holes
25 splicing ears
Shell on 30
31 heads
310 upper wall portions
310a lower surface
310b breach recess
311 surrounding wall portion
32 train of reduction gears installing departments
322～325 side wall portions
324a inner peripheral surface
33 bases
331 recesses
332 recesses
334 openings
335 recesses
336 distribution resettlement sections
342～345 flanges
342a, 342b flange
35 diapires
35a through hole
351 arcuation wall portions
351a inclined plane
36 flange bearing portions
36a through hole
37 positioning shaft sleeves
37a location hole
37b location hole
371 partitions
371a through hole
38 connectors are dodged portion
39 positioning shaft sleeves
39a location hole
40a motor installing hole
40b motor installing hole
41 motor shaft hole
42 breach
421 wall portions
43 flanges
431～434 flanges
432a, 433a, 434a flange
45 gear support walls
45a outer peripheral face
46 (461～465) prerotation vane
461a inclined plane
461b inner-diameter end
47 (471～478) rib
49 first supporting stations
50 pins
51 second supporting stations
52 pins
55 inserting holes
56 supporting sleeves
56a axis hole
57 protrusions
61 gear through holes
62 supporting sleeves
62a axis hole
63 supporting sleeves
63a axis hole
64 supporting sleeves
64a axis hole
65 spring-loaded portions
65a engaging groove
65b engaging groove
651 inclined planes
67 ribs
70 lower casings
71 diapires
71a～71d recess
71d1 opening
71e periphery
72 (721～724) side wall portion
721a～725a stage portion
722b, 723b notch part
724b rib
725 projection pieces
78 position limitation portions
79 gear support portions
79b notch part
791～796 ribs
81 supporting sleeves
81a axis hole
82 supporting sleeves
82a axis hole
83 supporting sleeves
83a axis hole
84 supporting sleeves
84a axis hole
87 location divisions
87a alignment pin
87b location hole
88 columns
88a screwed hole
89 flange parts
89a screwed hole
90 pinions
G1 the first gear
91a large diameter gear
91b small-diameter gear
91c inserting hole
92a1 tooth portion
92b1 tooth portion
G2 the second gear
92a large diameter gear
92b small-diameter gear
92c inserting hole
921 base portions
922 cam surfaces
925 base portions
926 arms
927 pawls
928 axial regions
G3 the 3rd gear
93a large diameter gear
93b small-diameter gear
93c inserting hole
G4 the 4th gear
94a large diameter gear
94b small-diameter gear
94c inserting hole
95 connectors
95a terminal
100 substrates
100a～100d distribution
135 potentiometers
137 sensor gear
138 rotating shafts
138a axle
138b axle
150 angular transducers
151 substrates
152 pin-and-holes
153 pin-and-holes
200 output links
201 fitting portions
210 output links
Gf output gear
250 axial regions
251 cylindrical portion
251a tooth portion
253 connecting walls
254 stiffeners
255 axial regions
255a opposite side distance
255b keyway
256 axial regions
256a opposite side distance
256b keyway
257 limiting sections
257a spring-loaded hole
257b lightening hole
257c arcuation outer peripheral face
257d arcuation inner peripheral surface
257e bearing surface
801,802 confinement blocks
801a, 802a confined planes
861,862 fixedly use axle sleeve
861a, 862a screwed hole
S1～S4 the first bolster～four bolster
Sp, Sp ' spring
Sp1 mono-end
Sp2 the other end
St gap (spring receiving space)
Su space (lid side space)
Sd space (lower outside shell-side space)
T torque limiter
T1～T4 region
Wa heavy wall
W distribution
X1～X4, Xa axis
Embodiment
The execution mode that applies the present invention to gear motor 1 is described, and wherein, gear motor 1 is for toilet seat, the toilet cover of Western water closet and be provided with the driven for opening and closing around the lid of horizontal rotational shaft that is driven into of washing machine of lid etc. at upper surface.Fig. 1 is the stereogram that represents the outward appearance of the gear motor 1 of execution mode.Fig. 2 is from right back and the exploded perspective view of oblique beneath gear motor 1.Fig. 3 is the gear train expanded view of gear motor 1.Fig. 4 is the vertical view that represents the state after lower casing 70 is pulled down shell 30, and it is the figure of the configuration of the train of reduction gears 5 of explanation in lower casing 70 and output gear Gf.In addition, in Fig. 4, pinion 90, the first gear G1, sensor gear 137 are disposed at than the more position of upside of upper shell, therefore, are represented by dotted lines.In addition, in the following description, the left side of Fig. 1 is made as to front, right side is made as to rear, will be made as left near observer's one side, will be made as away from observer's one side right-hand, by upside be made as top, by downside be made as below.
The gear motor 1 of execution mode is to form by accommodate DC motor 2, train of reduction gears 5, output gear Gf in the housings 7 that the upper shell 30 that is equivalent to the second housing being formed from a resin respectively, the lower casing 70 that is equivalent to the first housing and lid 10 form.
As shown in Figure 3, form the first gear G1 to the four gear G4 of train of reduction gears 5 and comprise respectively large diameter gear 91a～94a and small-diameter gear 91b～94b, and the large diameter gear that is set as small-diameter gear and next gear engages successively.In addition, the small-diameter gear of the first gear G1, the second gear G2, the 4th gear G4 and large diameter gear pass through resin forming and one formation.
The first gear G1～four gear G4 is resinous, and be supported to and can rotate by the first bolster S1～four bolster S4 of steel respectively, these first bolsters S1～four bolster S4 is supported on the supports such as the supporting sleeve of formation on upper shell 30 and lower casing 70.In addition, all parallel formations of the pivot of the pivot of each gear of train of reduction gears 5 and each bolster and sensor gear 137.
In gear motor 1, it is output gear Gf that the rotation of DC motor 2 is passed to output shaft via train of reduction gears 5, and the output link 200,210 being connected with this output gear Gf is around axis X a rotation (with reference to Fig. 1).Toilet seat, the toilet cover of output link 200,210 and such as Western water closet and the rotating shaft that is provided with the lid of washing machine of lid etc. at upper surface are connected, with the rotating gang of output link 200,210 drive lid to open to close.Therefore, in the time that lid is installed on output link 200,210, output gear Gf, output link 200,210 and lid carry out the action of one, therefore, though not shown go out lid, the action that can be lid by the action interpretation of output gear Gf.
As shown in Figures 1 and 2, housing 7 adopts following structure: upload and be set up shell 30 at lower casing 70, and on this on train of reduction gears installing department 32 except the head 31 of front side of shell 30 mounting cover 10.The head 31 of upper shell 30 can be because not covering 10 overlapping being restricted, and therefore, head 31 is towards the position protuberance more closer to the top than train of reduction gears installing department 32.The upper surface of head 31 is lower than the upper surface that covers 10, therefore, in head 31 sides of lid 10, inclined plane 10a is set, so that the upper surface of head 31 is continuous with the upper surface of lid 10.
The leading section semicircular in shape of the flat shape of housing 7, rear is the essentially rectangular that extends and have the width larger than this semicircle on one side with this semicircle phase ground connection, and the another side relative with above-mentioned one side has the rake being connected with this semicircle near above-mentioned semicircle.Herein, the connector being provided with on upper shell 30 for avoiding interfering with the aftermentioned connector 95 of lower casing 70 is dodged portion 38 (with reference to Fig. 6).Therefore, the face profile identical with the face profile of lower casing 70 (with reference to Fig. 6) of the other parts of upper shell 30 except this connector is dodged portion 38.The major part of the head 31 of upper shell 30 is semi-circular portion.Output link 200,210 from the head 31 semicircle center extends (with reference to Fig. 1) along the vertical direction.
Below, the structure of the each several part to gear motor 1 describes successively.
[lid]
Fig. 5 covers 10 stereogram, and Fig. 5 (a) represents the back side, and Fig. 5 (b) represents upper surface (front).
As shown in Fig. 5 (a), lid 10 is formed as roughly dish type, the side wall portion 12 (121,122,123,124) that it has upper wall portions 11 and arranges along the outer peripheral edges of this upper wall portions 11, lid 10 utilizes screw 8 to be combined with upper shell 30 and lower casing 70 one by jointly screwing at its four bights place.
Side wall portion 122～124 base altitude is separately identical, but in the half-way of the length direction of side wall portion 122, is formed with projection piece 125 in the position corresponding with the breach 42 of shell in aftermentioned 30 in the side-prominent mode of shell 30 1 upward.In addition, on side wall portion 121, for fear of with aftermentioned on shell 30 1 sides the interference such as spring-loaded portion 65 and be formed with breach 121a.
As shown in Figures 1 and 5, be provided with installation portion 13,13 in the both sides of lid 10 head 31 1 sides (front side).This installation portion 13 has: while overlooking observation, be the roughly diapire 131 of semi-circular shape; And the arcuation wall portion 132 of extending towards upper wall portions 11 1 sides from the periphery of the arcuation of this diapire 131, the mode that runs through this diapire 131 with through-thickness on diapire 131 is formed with the through hole 131a inserting for screw 8 (with reference to Fig. 1).
Installation portion the 13, the 13rd, extends to than the lower end of side wall portion 122,123 end of shell 30 1 sides () position more on the lower and forms from upper wall portions 11, and tabular diapire 131,131 peripheries with arcuation of being located at arcuation wall portion 132,132 front ends are respect to one another towards being located at from upper wall portions 11 position that shell 30 1 lateral deviations are moved upward.In lid 10, arcuation wall portion 132 towards side opening, is connected with respectively side wall portion 122,123 at the rear side of this arcuation wall portion 132 from upper end to diapire.
Left side at lid 10 rears is provided with breach recess 11a, is provided with flange part 14 in the bottom side of this breach recess 11a, and this flange part 14 has the through hole 14a for running through for screw 8.In addition, be provided with connector dodge the 11b of portion on the right side at lid 10 rears, this connector is dodged the 11b of portion for fear of interfering and cave in orthogonal in the mode corresponding with connector 95 with the connector 95 of aftermentioned lower casing 70.Therefore, side wall portion 123 is dodged the 11b of portion warpage along this connector.
Near of dodging the 11b of portion at this connector with from upper wall portions 11 upward the side-prominent mode of shell 30 1 be formed with cylindrical wall 16.This cylindrical wall 16 is point two stage reduction diameter on its length direction, has the through hole 16a for inserting for screw 8 at this cylindrical wall 16 center.
The large-diameter portion 162 by upper wall portions 11 1 sides of cylindrical wall 16 forms as one with side wall portion 124, the lower surface of large-diameter portion 162 is positioned at the position slightly higher than the lower edge of side wall portion 124, and shell 30 1 is side-prominent more upward than the lower edge of side wall portion 124 (end faces of upper shell 30 1 sides) for the minor diameter part 161 (axle sleeve 161) of front.
In upper wall portions 11 with axle sleeve 161 roughly the position at diagonal angle to be provided with shaft sleeve part 17 near the mode of installation portion 13.This shaft sleeve part 17 is to give prominence to and form in the below of shell 30 1 sides upward from upper wall portions 11, and it divides two stage reduction diameter in the longitudinal direction.The front of shaft sleeve part 17 becomes the alignment pin 171 that diameter is less than the diameter of base portion 172, and this alignment pin 171 is given prominence to the below of shell 30 1 sides more upward than side wall portion 123.Shaft sleeve part 17 by being connected with rib between the base portion 172 of upper wall portions 11 1 sides and side wall portion 122 and arcuation wall portion 132, improved rigidity.
Herein, in execution mode, the location hole 37a, the location hole 39a (with reference to Fig. 6) that in the time that lid 10 loads in shell 30, embed respectively shell 30 1 sides from the alignment pin 171 of the extended axle sleeve 161 of cylindrical wall 16 and axle sleeve 17, be positioned shell 30 thereby make to cover 10.
As shown in Fig. 5 (b), be formed with accordingly accepting hole 16b at face side and the above-mentioned cylindrical wall 16 of lid 10, offer through hole 16a in the centre of its diapire 16c.The upper surface of diapire 16c is set to the height identical with the upper surface of flange part 14 (with reference to Figure 21).
Herein, lid 10 utilizes the screw 8 (with reference to Fig. 1) of inserting through hole 131a, the 131a of front side and through hole 14a, the 16a of rear side to be tightened in lower casing 70.Therefore, in the accepting hole 16b of lid 10 face side, contain the head of the screw 8 (with reference to Fig. 1) of inserting through hole 16a.
As shown in Fig. 5 (a), be formed with towards upper wall portions 11 1 sides and keep out of the way a certain amount of stage portion 122a, 123a, 124a in the inner surface side of side wall portion 122,123,124.The inner surface that the stage portion 123a that is located at the inner surface of side wall portion 123 is formed as also arriving connector and dodges the 11b of portion.Herein, the bight 11b1 that connector is dodged the 11b of portion is positioned near of the large diameter gear 91a of aftermentioned the first gear G1, therefore, dodges 11b place of portion at connector, and stage portion 123a interrupts at bight 11b1, thereby avoids interfering with large diameter gear 91a.
In addition, be formed with the stage portion 125a of the shape of following projection piece 125 in the part that is provided with projection piece 125 of side wall portion 122, the stage portion 124a that is located at the inner surface of side wall portion 124 interrupts in the part of cylindrical wall 16.In addition, the front end of stage portion 122a, 123a arrives above-mentioned arcuation wall portion 132 and stops.
Fig. 6 pulls down from the housing 7 of gear motor 1 vertical view that covers the state after 10.Fig. 7 is the vertical view that the upper surface of shell 30 from shown in Fig. 6 is pulled down the state after angular transducer 150 and the first gear G1.In addition, in the figure, in order easily to understand the shape of the breach 42 that is formed at base 33, the not shown lower casing 70 that goes out to be positioned at shell 30 downsides.Fig. 8 is the stereogram that represents the monomer of shell 30, Fig. 8 (a) is the stereogram of observing the upper surface by lid 10 1 sides of shell 30 from oblique rear, a left side, and Fig. 8 (b) is the stereogram of the lower surface of 70 1 sides of shell on the lower of shell 30 the oblique forward observation in a left side.Fig. 9 is the X-X cutaway view of Fig. 6.Figure 10 is the upward view of shell 30 from lower casing 70 unilateral observations, and it is the figure that represents the spring Sp that is assembled in aftermentioned output gear Gf with double dot dash line.Figure 11 is the A-A cutaway view of Figure 10.In addition, Figure 19 is the A-A cutaway view of Fig. 6, and it is that explanation loads upper shell 30 in the figure of lower casing 70.Figure 20 (a) is the B-B cutaway view of Fig. 6, and Figure 20 (b) is the C-C cutaway view of Fig. 6, and Figure 21 (a) is the D-D cutaway view of Fig. 6, and Figure 21 (b) is the E-E cutaway view of Fig. 6.Figure 22 (a) is F-F cutaway view, and Figure 22 (b) is G-G cutaway view.
As shown in Figure 8, upper shell 30 is made up of head 31 and train of reduction gears installing department 32 in appearance.The upper wall portions 310 of head 31 is positioned at than the base 33 of upper wall that forms train of reduction gears installing department 32 more by covering the position of top of 10 1 sides.Train of reduction gears installing department 32 is overlooked shape in the form of a substantially rectangular while observation.Periphery in 70 1 sides of shell on the lower of upper wall portions 310 is provided with surrounding wall portion 311 along its periphery, is also provided with side wall portion 322,323,324,325 along its periphery at the periphery of 70 1 sides of shell on the lower of base 33.Side wall portion 322,323 is connected with surrounding wall portion 311 respectively by aftermentioned arcuation wall portion 351, and lower casing 70 1 sides of upper shell 30 are surrounded by surrounding wall portion 311, side wall portion 322,323,324,325.
As shown in Figure 6, in upper shell 30, be provided with the flange corresponding with the stage portion of covering 10 342,343,344,345 at the upper surface by lid 10 1 sides of base 33 along the position that is inwards offset ormal weight from periphery.In addition, the height of flange 342,343,344,345 is set equal to or is slightly smaller than the degree of depth (from the amount of keeping out of the way of lower genesis) of the stage portion 122a～124a that covers 10.Herein, in the time illustrating the situation at right rear side of housing 7, as shown in Figure 21 (b), the height ha of flange 343 is set equal to or is slightly smaller than the degree of depth hb (ha≤hb) of the stage portion 123a of the side wall portion 123 that covers 10.
As shown in Figure 6, in lid 10 1 sides of upper shell 30, angular transducer 150, the large diameter gear 91a of the first gear G1, pinion 90 are positioned at the inner side of above-mentioned head 31, flange 342,343,344,345.
When covering 10 while loading in upper shell 30, the side wall portion 122～124 of lid 10 is chimeric with flange 342,343,344,345, under this state, side wall portion 122～124 be positioned at flange 342,343,344,345 outside and on fore-and-aft direction and left and right directions to cover 10 and upper shell 30 position.In addition, the end face of top shell one side of side wall portion 122～124 and the upper surface (interface) of the side wall portion 322～324 in the outside of flange 342～344 of lid 10 contact, to position (with reference to Figure 19～Figure 22) to covering 10 with upper shell 30 on above-below direction.
As shown in Figure 6, in the both sides of the front side of base 33, be provided with in head 31 and the coupling part of base 33 the breach recess 310b that accommodates the installation portion 13 that covers 10.The front end of flange 342,343 arrives the inwards warpage of position of breach recess 310b, and a part for the wall of formation breach recess 310b is also connected with spring-loaded portion 65.Breach recess 310b is towards the upper surface open of base 33, and extends towards the below of lower casing 70 1 sides along side wall portion 322,323, has diapire 35 in the lower end of this breach recess 310b, and this diapire 35 is formed with the through hole 35a running through for screw 8.The upper surface of diapire 35 is positioned at the altitude range of side wall portion 322,323, and is set as when making to cover 10 when overlapping with the upper surface of base 33 and the height (with reference to Figure 20 (a)) of the lower surface butt of the diapire 131 of installation portion 13.
Diapire 35 is overlooked while observation and is roughly semi-circular shape, and be set as make the periphery of arcuation respect to one another towards.Through hole 35a is formed at and the through hole 131a that covers 10 diapire 131,131, the position that 131a mates on this diapire 35.
The breach recess 310b that is located at head 31 is formed as caving in towards central side (axis X a mono-side), overlook while observation, this breach recess 310b is the arcuation with the form fit of the installation portion 13 (arcuation wall portion 132: with reference to Fig. 5) of above-mentioned lid 10.In execution mode, when lid 10 is with upper shell 30 when overlapping, the periphery of arcuation wall portion 132 roughly seamlessly contacts with breach recess 310b's in interior week, and arcuation wall portion 132 is as working covering 10 guides while being assembled in upper shell 30.
In the left side at base 33 rears, be formed with in the position corresponding with the through hole 14a of lid 10 the through hole 36a that through-thickness runs through base 33.Through hole 36a is positioned at the outside of the flange 345 that flange 342 is connected with flange 344, becomes and the bearing surface of lid 10 flange part 14 butts around the plane flange bearing portion 36 of through hole 36a.The flange part 89 of aftermentioned lower casing 70 and this flange bearing portion 36 and face (lower surface) butts (with reference to Figure 20 (b)) lid 10 contrary sides, flange bearing portion 36 becomes till heavy wall Wa side wall portion 322 and aftermentioned interface lower casing 70.
As shown in Figure 6, the rear end right corner portion of base 33 is to dodge portion 38 with lid 10 identical connectors, is provided with accordingly positioning shaft sleeve 37 near the position of dodging along connector the flange 343,344 of portion 38 with the cylindrical wall 16 that covers 10.In addition, the flange 344 of base 33 rear ends interrupts in the forming part of positioning shaft sleeve 37, and height is therebetween identical with the height of the upper end of positioning shaft sleeve 37.
Positioning shaft sleeve 37 swells towards lid 10 1 sides from base 33, and below base 33, extends to the height (with reference to Figure 21 (a)) of the lower end (with the interface of lower casing 710) of side wall portion 324.With the upper end open of the location hole 37a mating from the extended axle sleeve 161 of cylindrical wall 16 at positioning shaft sleeve 37, there is partition 371 at the depth location corresponding with the length of axle sleeve 161 from upper end of location hole 37a.On positioning shaft sleeve 37, be formed with across partition 371 the location hole 37b mating with the aftermentioned column 88 of lower casing 70, this location hole 37b is at the lower ending opening of positioning shaft sleeve 37.On partition 371, be provided with accordingly with the through hole 16a of lid 10 the through hole 371a passing for screw 8, the axle center of this through hole 371a, location hole 37a, 37b being set for to above-below direction is each other consistent.
In addition,, in the left forward side at the back side of base 33, be provided with the positioning shaft sleeve 39 extending towards lower casing 70 1 sides near of above-mentioned diapire 35 and than flange 432 position more in the inner part.Positioning shaft sleeve 39 has location hole 39a, and this location hole 39a and lid 10 alignment pin 171 be accordingly in the upper surface open of base 33, and is through to lower end (with reference to Figure 21 (b)).Location hole 39a has the internal diameter mating with the alignment pin 171 of lid 10, and half part is received alignment pin 171 in the axial direction, at the aftermentioned alignment pin 87a (with reference to Figure 21 (b)) of axial the latter half storage lower casing 70.
In execution mode, this location hole 39a and the location hole 37a that surrounds through hole 371a are located at the roughly diagonal position of overlooking while observation in the base 33 of shape in the form of a substantially rectangular, by these location holes 39a, location hole 37a with cover the alignment pin 171 of 10 1 sides and positioning shaft sleeve 161 chimeric to cover 10 and upper shell 30 between accurately locate.
In the left side at base 33 rears, on the face of 70 1 sides of shell on the lower of base 33, DC motor 2 (with reference to Fig. 3) is installed, as shown in Figure 6, the pinion 90 that is installed on motor reel 3 (with reference to Fig. 3) front end of DC motor 2 is positioned at the upper surface by lid 10 1 sides of base 33.The large diameter gear 91a that is disposed at the first gear G1 of the position of keeping right of base 33 engages with this pinion 90, so that the output rotation of DC motor 2 is passed to the first gear G1 via pinion 90.
As shown in Figure 7, in base 33, be formed with motor installing hole 40a, 40b near of pinion 90, the screw 9 (with reference to Fig. 6) that DC motor 2 utilization is inserted motor installing hole 40a, 40b is installed on the face of 70 1 sides of shell on the lower of base 33.In addition, motor installing hole 40a is oblong slotted hole while observation for overlooking, can on circumferentially, regulate DC motor 2 to position DC motor 2.
In addition, as shown in Fig. 5 (a), in the upper wall portions 11 of lid 10, be formed with the axis hole 21 of avoiding the first bolster S1 that dodges hole 15 and confession the first gear G1 interfering with pinion 90 to insert at the back side of upper shell 30 1 sides.
As shown in FIG. 6 and 7, near the installation portion of the DC motor 2 of base 33, be provided with breach 42.Breach 42 is towards the side opening of flange 342 1 sides, and flange 342 is the flange 342a of front side and the flange 342b of rear side take breach 42 as boundary demarcation.As shown in Figure 8, flange 342a, 342b arrive the position of breach 42 towards lower casing 70 1 side warpages respectively, and a part that forms the wall of breach 42 is also extended towards lower casing 70 1 sides.The projection piece 125 of above-mentioned lid 10 is corresponding with this breach 42, is configured to making to cover 10 when overlapping with upper shell 30, and the lower end of projection piece 125 is positioned at the roughly centre position (with reference to Figure 22 (b)) of the short transverse of side wall portion 322.
Breach 42 is set as and on thickness direction, runs through base 33, so that be communicated with across the space up and down of base 33.In execution mode, be drawn in lower casing 70 through this breach 42 from the extended distribution W of angular transducer 150, in lower casing 70, distribution W by soldering in described later using distribution W and the printed base plate 100 (with reference to Figure 13) being connected as the connector 95 of signal efferent.
The aperture area of overlooking the breach 42 while observation is set to and makes the intransitable size of aftermentioned angular transducer 150 (substrate 151).But, in base 33, breach 42 forms towards the side opening of side wall portion 322 1 sides, therefore, even if in one end of distribution W and other end soldering in advance in substrate 151,100, also can be by from side wall portion 322 1 sides towards breach 42 interior insertion distribution W and not producing and hinder angular transducer 150 is set.Therefore, the aperture area of overlooking the breach 42 while observation is set to the minimum dimension that only can pass for distribution W, less than the perspective plane of angular transducer 150.
As shown in Fig. 6 and Fig. 8, at the front side of base 33, the supporting sleeve 64 of aftermentioned the 4th gear G4 is set as adjacent with head 31, is provided with the spring-loaded portion 65,65 for an end Sp1 (with reference to Fig. 2) of aftermentioned spring Sp is supported in the left and right sides of this supporting sleeve 64.On base 33, supporting sleeve 64 and spring-loaded portion the 65, the 65th, outstanding and form towards the top of lid 10 1 sides, the rib 67 that these supporting sleeves 64 erect from the upper surface of base 33 with spring-loaded portion 65,65 use is connected.
As shown in Fig. 8 (b) and Figure 10, on the lower surface of 70 1 sides of shell on the lower of supporting sleeve 64 and spring-loaded portion 65,65, be formed with axis hole 64a and engaging groove 65a, 65b, wherein above-mentioned axis hole 64a is supported to the upper end of the 4th bolster S4 of the 4th gear G4 can rotate, and above-mentioned engaging groove 65a, 65b make an end Sp1 engaging of spring Sp. Engaging groove 65a, 65b are communicated with the recess 335 of formation output gear reception room.
On base 33, dispose explicitly angular transducer 150 (with reference to Fig. 3) with the 4th gear G4.As shown in Figure 6, angular transducer 150 is provided with potentiometer 135 on the substrate 151 (printed base plate) of rigidity that is printed with transducer distribution, and this angular transducer 150 is to make the axle 138a of the upside of sensor gear 137 run through substrate 151 and potentiometer 135 from below and (with reference to Fig. 3) of forming.In addition, the axle 138a of upside and the axle 138b of downside described later and sensor gear 137 are integrated.
As shown in Fig. 5 (a), be formed with and press axle sleeve 18,19 and supporting sleeve 20 at the front side of lid 10 upper wall portions, wherein the above-mentioned axle sleeve 18,19 of pressing is for fixed angle transducer 150, and above-mentioned supporting sleeve 20 inserts the axle 138a of sensor gear 137 axis hole 20a and is supported to and can rotates.In addition, press axle sleeve 18,19, supporting sleeve 20 and above-mentioned shaft sleeve part 17, cylindrical wall 16 is integrally formed in the time of lid 10 resin forming.Each supporting sleeve in aftermentioned in shell 30 and lower casing 70 and other axle sleeve are integrally formed too in the time of upper shell 30 and lower casing 70 resin forming.The 4th gear G4 and angular transducer 150 can be elaborated below.
As shown in Fig. 7 and Fig. 8 (a), the front side of base 33 with the Width at base 33 on mode spaced apart be provided with than the further recess 331,332 of depression of the upper surface of base 33.On these recesses 331,332 respectively towards above shaped bulge become to be useful on the first supporting station 49 and second supporting station 51 of substrate 151 of mounting angular transducer 150.On the upper surface of the first supporting station 49, be provided with pin 50, on the upper surface of the second supporting station 51, be provided with two pins 52,53.
On substrate 151 (with reference to Fig. 6), be provided with the pin-and-hole 152,153,154 corresponding with above-mentioned pin 50,52,53, carry out orientation angle transducer 150 by selling 50,52,53 embedding pin-and-holes 152,153,154.
The mode that runs through base 33 with through-thickness between the first supporting station 49 and the second supporting station 51 is provided with the inserting hole 55 of inserting for the sensor gear 137 of angular transducer 150, and the supporting sleeve 56 that the axle 138b of the downside to sensor gear 137 supports is positioned at the central portion of this inserting hole 55.As shown in Fig. 7 and Fig. 9, supporting sleeve 56 is located at the front end of the protrusion 57 swelling towards the central side of inserting hole 55 from the downside of 70 1 sides of shell on the lower of base 33, and the axis hole 56a that the axle 138b of sensor gear 137 is formed on supporting sleeve 56 is supported to and can rotates.
As shown in Figure 7, the small-diameter gear 94b of the 4th gear G4 leans out in inserting hole 55, and sensor gear 137 is set as with this small-diameter gear 94b and engages.
Between the recess 332 of base 33 and side wall portion 322, be provided with and overlook while observation the distribution resettlement section 336 of shape in the form of a substantially rectangular.Distribution resettlement section 336 is formed as the concavity more caving in towards below than the upper surface by lid 10 1 sides of base 33, contains the extended distribution W of substrate 151 (with reference to Fig. 6) from angular transducer 150 in this distribution resettlement section 336.Herein, as shown in Figure 6, the end by side wall portion 322 1 sides of substrate 151 is set as the top that arrives distribution resettlement section 336, and distribution W is connected with the back side of upper shell 30 1 sides by soldering at the part place being positioned on distribution resettlement section 336 of substrate 151.Therefore, distribution W is towards being limited by substrate 151 by the movement of top of lid 10 1 sides, thus avoid distribution W significantly to expose from distribution resettlement section 336 and with near the first gear G1 (large diameter gear 91a) interference being positioned at distribution resettlement section 336.
As shown in Fig. 8 (b) and Figure 10, also in the surrounding wall portion 311 of upper shell 30 and the lower surface of side wall portion 322,323,324 (with the interface of lower casing 70) upper position except circumferential regulation position, flange 431,432,433,434 is set.Flange 431,432,433,434 extends specified altitude from the inner side of the outer peripheral face ormal weight that leaves surrounding wall portion 311 and side wall portion 322,323,324 towards the below of lower casing 70 1 sides.The medial surface of flange 431,432,433,434 is consistent with the inner surface of surrounding wall portion 311 and side wall portion 322,323,324, and the medial surface of flange 431,432,433,434 forms the form that the inner surface of surrounding wall portion 311 and side wall portion 322,323,324 is extended.For example, Figure 21 (b) in the situation that, the medial surface of the medial surface of flange 343 and flange 433 is set as along the imaginary line Im2 extending on the orthogonal direction at base 33.
As shown in Figure 8, on the face by lid 10 1 sides of upper shell 30, flange 344 is interrupted in the forming part of the positioning shaft sleeve 37 at rear portion, therefore, can make positioning shaft sleeve 37 near the periphery of base 33 as far as possible and guarantee the area of the upper surface of positioning shaft sleeve 37, thus can improve with the state of large-diameter portion 162 butts of cylindrical wall 16 under screw screw power.Flange bearing portion 36 is also more guaranteeing larger area by the position of outer circumferential side than flange 345, and in short transverse, form heavy wall Wa, make from the interface by lid 10 1 sides of side wall portion 324 till the thickness of the interface of lower casing 70 1 sides becomes large, therefore, stand larger screw and screw power.The diapire 35 of being located at the left and right of the front side of shell 30 also has the thickness of regulation in short transverse.; regulation area portions centered by the through hole 35a of the diapire 35 of breach recess 310b is set as heavy wall, this heavy section flange 432,433 is interrupted and along the outer peripheral face of side wall portion 322,323 towards and the lower edge position identical or slightly on the lower of flange 432,433 extend.Herein, the thickness that has regulation as the diapire 35 of the left and right of the portion that screws of screw 8 and flange bearing portion 36 in short transverse, therefore, can improve the torque that screws of screw.
As shown in figure 10, on the face of 70 1 sides of shell on the lower of base 33, the substantial middle portion of fore-and-aft direction becomes the region T1 that train of reduction gears 5 is set, and the rear side of this region T1 becomes the region T2 that DC motor 2 is set, and front side becomes the region T3 that output gear Gf is set.
In addition, overlook the connector that depression is essentially rectangular while observing and dodge portion 38 for fear of becoming with the interference of connector 95 at the right rear side of base 33, the periphery of dodging portion 38 along this connector is formed with to overlook and while observation, is the roughly side wall portion 325 of L word shape.Even if flange 433a dodges 38 places of portion also towards extending from the outstanding direction of interface side wall portion 325 and opening edge lower casing 70 at connector.
Herein, T3Chao Bi region, region T1 is more by significantly caving in away from the position of observer's one side (upper side), is formed with in the centre of the upper wall portions 310 of the diapire as region T3 the opening 334 that runs through upper wall portions 310 along thickness direction.Be formed with the gear support wall 45 that surrounds this opening 334 with predetermined distance at the radial outside of this opening 334.The axial region cylindraceous 256 of aftermentioned output gear Gf is supported on the inner side of gear support wall 45 in revolvable mode, the output link 200 being connected with this output gear Gf is given prominence to (with reference to Fig. 9) through opening 334 towards the outside of housing 7.
As shown in figure 10, on the inner surface of upper wall portions 310, the rib 47 (471～478) of strengthening use is radially and extends from the periphery of gear support wall 45.The rib 47 (471～478) of strengthening use the central shaft around opening 334 (axis X a) circumferentially on be equally spaced provided with multiple.The prerotation vane 46 (461～465) that the displacement of spring Sp is limited is connected with the rib 471～475 of strengthening the front side in the rib 47 (471～478) of use.Prerotation vane 461～465 extends in short transverse along surrounding wall portion 311, guarantees to be useful on the gap St (spring receiving space) (with reference to Figure 11) of configuration spring Sp between the inner-diameter end 461b～465b of prerotation vane 461～465 and the outer peripheral face 45a of gear support wall 45.
The diameter of overlooking the inscribed circle (imaginary circle being represented by symbol Im1 in reference diagram) of the prerotation vane 461～465 (inner-diameter end 461b～465b) while observation is set greatlyr than the coil outer diameter of the spring Sp under free state.In addition, the internal coil diameter when external diameter of gear support wall 45 is configured to specific output gear Gf and rotates to the full close position of lid and spring Sp is rolled tightly is little, and in the rotary course of output gear Gf, spring Sp can not be wound in gear support wall 45.By this, spring Sp can be put into without barrier under free state to spring receiving space (gap St).As shown in figure 11, the upper end of these prerotation vanes 46 (461～465) is consistent with the upper end of the flange 431 of head 31, is provided with inclined plane 461a～465a in the upper end side of prerotation vane 46 (461～465).Distance h between the lower surface 310a of inclined plane 461a～465a and upper wall portions 310 is along with shortening towards axis X a side, and the guide of inclined plane 461a～465a when spring Sp is inserted to gap St works.
The rib 476～478 of overlooking the reinforcement use of rear side while observation upwards extends in the footpath of gear support wall 45, and axis hole 64a is positioned on the extended line of rib 477.In addition, played with the arcuation wall portion 351 of above-mentioned prerotation vane 46 identical functions and be positioned on the extended line of remaining rib 477,478.As shown in figure 10, be provided with inclined plane 351a at the front end (lower end) of 70 1 sides of shell on the lower of arcuation wall portion 351, this inclined plane 351a also guide when spring Sp is inserted to gap St works.In addition, the periphery of arcuation wall portion 351 is consistent with side's lateral margin of engaging groove 65a, the 65b upwards of the week around axis X a, and an end Sp1 of spring Sp is directed in engaging groove 65a, 65b along this arcuation wall portion 351.
Herein, as shown in Figure 9, the small-diameter gear 94b of the 4th gear G4 engaging with output gear Gf is in order also to engage and to extend towards top with the angular transducer 150 of upper surface side of the base 33 that is installed on upper shell 30, and from the sagittal plane of axis X a in spring receiving space St.As mentioned above, the internal coil diameter of spring Sp is larger than the external diameter of gear support wall 45, therefore, produces play between them, when spring Sp (being right side in Figure 10) displacement towards the rear, may interfere with the small-diameter gear 94b of the 4th gear G4.
Therefore, as shown in figure 10, the arcuation wall portion 351 that surrounds diapire 35 is configured to towards the interior outstanding overhang of recess 335: under these conditions, during when spring Sp (right side in figure) displacement towards the rear and with arcuation wall portion 351 butt, between the small-diameter gear 94b of spring Sp and the 4th gear G4 (imaginary line in reference to figure), remain the gap of regulation.Even under this condition, still suppose between the outer peripheral face of gear support wall 45 and other prerotation vane 46 (461～465) and dispose the spring Sp under free state in the gapped mode of tool.
In addition, most of scope of arcuation wall portion 351 height along spring Sp (length) extends towards the below of lower casing 70 1 sides, so that no matter which the position displacement in the short transverse of spring Sp, all can with arcuation wall portion 351 butts, therefore, diapire 35 (and diapire 131 of installation portion 13) with respect to the position of lid 10 upper wall portions 11 than low (with reference to Figure 20 (a), Figure 20 (b)) such as the flange parts at rear portion 14.
In addition, as other means, also can set as follows the external diameter of gear support wall 45: even if be not also wound up into when spring Sp rolls tightly minimum diameter in the rotating range of output gear Gf under the such condition of gear support wall 45, make the front portion of internal coil diameter and gear support wall 45 butt during when spring Sp displacement towards the rear, between the small-diameter gear 94b of spring Sp and the 4th gear G4 (imaginary line in reference to figure), remain the gap of regulation.
As shown in figure 10, along the flange 431 of the periphery setting of head 31 with overlook the front side of diapire 35,35 while observing and be connected.This flange 431 is side-prominent and form towards lower casing 70 1 from base 33, makes to extend along the periphery of head 31 than the periphery of head 31 part more in the inner part.
In the time that upper shell 30 and lower casing 70 are overlapping, the side wall portion 721 of aftermentioned lower casing 70 is chimeric and locate (with reference to Figure 19 (b)) with this flange 431.
As shown in figure 10, be also provided with at the rear side of diapire 35,35 side wall portion 323 extending along the side wall portion 322 of the linearly extension of lateral margin in the left side of base 33 with along the lateral margin on the right side of base 33.The side wall portion 324 that extend on Width the rear end of base 33 is connected with the rear side of side wall portion 322, this side wall portion 324 interrupts flange 432a, 434 with the coupling part of side wall portion 322, cut the inner surface side of two side portion and form the inner peripheral surface 324a that is arcuation along DC motor 2 peripheries, to guarantee the resettlement section of DC motor 2.
The connector of being located at base 33 is dodged the side wall portion 325 of portion's 38 parts towards extending the position of the lower side of shell 70 1 sides more on the lower than other side wall portion 322,323,324, and to arrive the length formation of aftermentioned substrate 100 in the time that upper shell 30 is overlapping with lower casing 70.
The flange 433 of side wall portion 323 is formed as arriving the part of this side wall portion 325, and be set as part at this side wall portion 325 from side wall portion 325 towards front side and lower casing 70 1 sides below outstanding (with reference to the symbol 433a figure, also with reference to Fig. 8 (b)).The flange 434 of base 33 rear sides is to be also formed as arriving side wall portion 325, and is set as at this flange 434 from side wall portion 325 towards left side and lower casing 70 1 side-prominent (symbol 434a with reference to figure, also with reference to Fig. 8 (b)).
As shown in figure 10, the periphery of the ratio base 33 of the flange 432 in the left side of base 33 part more in the inner part extends to breach 42 along the length direction of base 33.Flange 432 is also located at the contrary side across breach 42, and is formed as arriving the side (with reference to symbol 432a in figure) of motor installing hole 40b.In the part of breach 42, flange 432,432a be towards the top bending of lid 10 1 sides, with flange 342a, 342b from base 33 upper surfaces towards the flange of below bending be connected (with reference to Fig. 8).
As shown in Figure 10 and Fig. 8, be formed with the positioning shaft sleeve 37 of the cylindrical shape side-prominent towards lower casing 70 1 in the position corresponding with above-mentioned through hole 371a of base 33 rear sides.Be formed with the location hole 37b of concavity to surround the mode of this through hole 371a in the centre of this positioning shaft sleeve 37.
At the lower surface of lower casing 70 1 sides of base 33, be roughly provided with positioning shaft sleeve 39 in the mode near diapire 35 in the position at diagonal angle with this positioning shaft sleeve 37.This positioning shaft sleeve 39 forms with the height slightly lower than flange 432, locates to be in the central formed with location hole 39a.
As shown in figure 10, be also provided with wall portion 421 along the lateral margin of breach 42 at the lower surface of 70 1 sides of shell on the lower of base 33.Herein, on the face of 70 1 sides of shell on the lower of base 33 (in Figure 10 near observer a side), the 3rd gear G3 of train of reduction gears 5 is arranged near (with reference to figure imaginary line) of breach 42.In execution mode, be provided with the distribution W (with reference to Fig. 6) substrate 100 being connected with angular transducer 150 by breach 42.Therefore, wall portion 421 is arranged on from the lateral margin of the front side of breach 42 till in the scope of the lateral margin of right-hand side, be wall portion 421 along in breach 42 by the lateral margin setting of region T1 mono-side of the 3rd gear G3 is set, to prevent that distribution W and train of reduction gears 5 (the 3rd gear G3) from interfering.In addition, wall portion 421 extends towards the below of lower casing 70 1 sides, and is located near the length formation of of the substrate 100 of lower casing 70 to arrive aftermentioned.
In addition, in order to prevent that distribution W and the 3rd gear G3 from interfering, as long as wall portion 421 extends to when the top of 10 1 sides is observed than the large diameter gear 93a of the 3rd gear G3 that is disposed at the position nearest apart from breach 42 more by the position of the below of substrate 100 1 sides from covering, even if it is also harmless to produce gap between wall portion 421 and substrate 100, as long as this gap can prevent that distribution W is by arriving the 3rd gear G3 mono-side.
Below, the support of upper shell 30 1 sides to gear etc. describes.As shown in Fig. 8 (b) and Figure 10, on the base 33 of upper shell 30, the motor shaft hole 41 of the motor reel embedding for the upper end 2a for DC motor 2 is at the rear side opening of the face of lower casing 70 1 sides.In addition, DC motor 2 positions (with reference to Fig. 3) by upper end 2a is embedded to motor shaft hole 41 to the pinion 90 that embeds motor reel 3.
Be provided with the gear through hole 61 running through for the small-diameter gear 91b of the first gear G1 at the front side of this motor shaft hole 41.In the time observing from gear through hole 61 near the position of inserting hole 55, towards lower casing 70 1 side-prominent be formed with the supporting sleeve 62 that the second gear G2 is supported, in addition, be formed with the axis hole 64a that the 4th gear G4 is supported at its front side.The protrusion 57 forming in the medial eminence from base 33 towards inserting hole 55 1 sides, to be formed with the supporting sleeve 63 of supporting the 3rd gear G3 towards the side-prominent mode of lower casing 70 1.
Supporting sleeve 62 has the axis hole 62a inserting for the upper end of the second bolster S2 of the second gear G2, supporting sleeve 63 has the axis hole 63a inserting for the upper end of the 3rd bolster S3 of the 3rd gear G3, and supporting sleeve has the axis hole 64a inserting for the upper end of the 4th bolster S4 of the 4th gear G4.
[lower casing]
Then, the support of gear to lower casing 70 1 sides etc. describes.Figure 12 is the stereogram of lower casing 70, and Figure 12 (a) is the stereogram of observing lower casing 70 from the oblique upper in left side, and Figure 12 (b) is the stereogram of the oblique beneath lower casing 70 from the right side.Figure 13 is the vertical view from upper shell 30 unilateral observation lower casings 70, and it is the figure that shows connector 95 and substrate 100 together with lower casing 70.In addition, in Figure 13, the distribution that is printed in the back side of substrate 100 dots.
As shown in figure 12, the side wall portion 72 (721,722,723,724) that lower casing 70 has diapire 71 and arranges along the periphery of diapire 71, is provided with DC motor 2, train of reduction gears 5, output gear Gf in the inner side of side wall portion 72.
On the upper limb of the side wall portion 72 (721～724) of lower casing 70, on the medial surface except circumferential regulation position, be formed with accordingly towards diapire 71 1 sides and keep out of the way a certain amount of stage portion 721a～724a with the flange 43 (431,432,433,434) of upper shell 30.In the bight at the left rear side of lower casing 70, the inner surface side of cutting side wall portion 722,724 reduces the width of stage portion 722a, 724a, to guarantee the resettlement section (with reference to Figure 13) of DC motor 2.In the half-way of the length direction of side wall portion 722, with above-mentioned on position corresponding to the breach 42 of shell 30 be formed with projection piece 725 in the side-prominent mode of shell 30 1 upward.
The substantial middle portion of the fore-and-aft direction of diapire 71 becomes the region T1 that train of reduction gears 5 is set, and the rear side of this region T1 becomes the region T2 that DC motor 2 is set, and front side becomes the region T3 that output gear Gf is set.In addition, the right rear side of diapire 71 becomes the region T4 (connector installation portion) that connector 95 is set.Herein, T2～region, region T4Bi region T1 further caves in, form region T2 recess 71a centre with towards above outstanding mode be formed with position limitation portion 78.As shown in Figure 3, this position limitation portion 78 in the case of the screw 9 that DC motor 2 is fixed on to base 33 unclamps, do not make the upper end 2a of DC motor 2 depart from and arrange from motor shaft hole 41.
Overlook recess 71a while observation and be the circular corresponding with the profile of DC motor 2, the recess 71b overlooking while observation in the form of a substantially rectangular extends towards front side along side wall portion 722 from side wall portion 722 1 sides of this recess 71a.This recess 71b extend to above-mentioned upper shell 30 breach 42 under position.
As shown in figure 13, at the rear side of lower casing 70 to be provided with substrate 100 across the mode of region T2 and region T4.There is distribution 100a～100e at the back up of this substrate 100.Each terminal 95a～95e of connector 95 is connected with one end of these distributions 100a～100e by soldering.Each terminal 95a～95e of the connector 95 upward top of shell 30 1 sides extends, and the opposite side member being connected with connector 95 is connected with connector 95 from upper shell 30 1 sides.
In addition, from the extended distribution W of above-mentioned angular transducer 150 in the other end soldering of distribution 100a～100c, the splicing ear 25,25 outstanding from DC motor 2 in the other end soldering of distribution 100d, 100e.Herein, in splicing ear 25,25 depressions at region T2 (recess 71b, 71a) of distribution W and DC motor 2 soldering in the back side of substrate 100.
On the connecting portion of the distribution 100a～100c of distribution W and substrate 100, the wall portions 421 of extending towards lower casing 70 1 sides from the periphery of the breach 42 of upper shell 30 and the upper surface butt of top shell one side of substrate 100, the distribution W being pulled out towards substrate 100 from upper shell 30 1 sides does not contact with the train of reduction gears (the 3rd gear G3) of being located in lower casing 70.
In the T1 of the region of diapire 71, the supporting sleeve 81 of supporting the first gear G1 is that the top of shell 30 1 sides is upward given prominence to and formed.This supporting sleeve 81 is set as near recess 71a, and has the lower end of the first bolster S1 of the first gear G1 is supported to revolvable axis hole 81a.
In addition, the ratio supporting sleeve 81 of region T1 more on the front side position with towards above outstanding mode be formed with the supporting sleeve 82 of supporting the second gear G2, this supporting sleeve 82 has the lower end of the second bolster S2 of the second gear G2 is supported to revolvable axis hole 82a.
The left side of the supporting sleeve 82 of region T1 and front with towards above outstanding mode be formed with the supporting sleeve 83 of supporting the 3rd gear G3 and the supporting sleeve 84 of supporting the 4th gear G4, supporting sleeve 83 has the lower end of the 3rd bolster 83 of the 3rd gear G3 is supported to revolvable axis hole 83a, and supporting sleeve 84 has the lower end of the 4th bolster S4 of the 4th gear G4 is supported to revolvable axis hole 84a.
In the T1 of region, supporting sleeve 84 is positioned at the substantial middle of the Width (left and right directions) of diapire 71, and is set as with the recess 71d that forms region T3 and contacts.
As shown in figure 13, overlook recess 71d while observation and be circular, the mode that diapire 71 (recess 71d) is run through with through-thickness in portion is in the central formed with opening 71d1, and this opening 71d1 inserts for the output link 210 being connected with output gear Gf.In recess 71d, erect gear support portion 79 in the mode that surrounds this opening 71d1, be supported with the axial region 255 (with reference to Fig. 3) of the tubular of output gear Gf in revolvable mode in the inner side of this gear support portion 79.
In execution mode, the 4th gear G4 is supported to and can be rotated with the supporting sleeve 84 of the rear side of gear support portion 79, in gear support portion 79, be provided with the breach 79b interfering with the large diameter gear 94a of the 4th gear G4 for avoiding, gear support portion 79 is roughly C word shape in the time overlooking observation.
Herein, the head 31 of above-mentioned upper shell 30 extends than base 33 height, between the surrounding wall portion 311 of head 31 and the diapire 71 of lower casing 70, (with reference to Figure 19 (b): distance L) is longer, therefore the gear support wall 45 and the gear support portion 79 that, form the metal (upper of output gear Gf can guarantee respectively larger axial dimension.
Around gear support portion 79, be the rib 791～796 that is provided with radially the linearly extension of the radial outside Zhou Dynasty from this gear support portion 79.Forming with the height identical with the region T1 of diapire 71 from the rib 796 towards radially extension between notch part 79b in these ribs 791～796, supporting sleeve 84 is positioned in the prolongation of rib 796.In addition, remaining rib 791～795 is located at the front side of gear support portion 79 with predetermined distance, and the height with the roughly half of the gear support portion 79 in axis X a direction forms (with reference to Figure 19 (a), Figure 19 (b)) for fear of interfering with the limiting section 257 of output gear Gf.
As shown in figure 13, between rib 791 and rib 796 and between rib 796 and rib 795, be provided with to overlook while observation and be the roughly confinement block 801,802 of コ word shape.As the confinement block the 801, the 802nd of the first fixation side limiting unit, the second fixation side limiting unit, from side wall portion 721,722,723 be integrally formed fixing outstanding and form by the Zhou Dynasty of gear support portion 79 1 sides (axis X a mono-side) axle sleeve 861,862, face 801a, the 802a of the front side of confinement block 801,802 becomes the confined planes that the rotating range around axis X a rotation of output gear Gf is limited.Confined planes ( face 801a, 802a) is to arrange along the warp of the gear support portion 79 by axis X a, and be for limiting section 257 butts of aftermentioned output gear Gf, the primary position of the output gear Gf with the rotating range around axis X a rotation to output gear Gf and when sensor gear 137 is engaged with the small-diameter gear 94b of the 4th gear G4 limits and arranges.
In addition, the wire diameter that the height of confinement block 801,802 is configured to the Gap-Ratios spring between the lower surface of tooth portion of the output gear Gf that makes its upper surface and be supported on carrying cylinder is little, even if because some is former thereby cause spring to be cut off, the cut off machine of this spring also can not enter gap and form lock-out state.In addition, with same object, as shown in figure 11, above-mentioned flange 431 and the gap h1 by between the lower surface of flange 431 1 sides that is located at the tooth portion of the periphery of aftermentioned output gear Gf are configured to less than the diameter of section d of wire-like members that forms spring Sp.
As shown in figure 13, fix with axle sleeve 861,862 and be set as from diapire 71 and give prominence to the top of shell 30 1 sides upward, and be inwards outstanding and formation from this sidewall with the height identical with stage portion 721a, 722a, the 723a of side wall portion 721,722,723.Fixing be formed with screwed hole 861a, 862b with the position of mating with through hole 35a upper shell 30 on axle sleeve 861,862 at this.
In the time making upper shell 30 overlapping with lower casing 70, the lower surface of the diapire 35 of upper shell 30 and the fixing upper surface butt with axle sleeve 861,862.The fixing upper surface with axle sleeve 861,862 is highly identical with stage portion 721a, 722a, 723a or slightly lower than stage portion 721a, 722a, 723a, and cut the upper limb of side wall portion 722,723 and extend to its outer peripheral face, with in the time making upper shell 30 overlapping with lower casing 70 and the lower surface butt of the diapire 35 of breach recess (with reference to Figure 13: symbol 722b, 723b).Therefore, use the diapire 35 of the fixing upper shell 30 of whole upper surface supporting with axle sleeve 861,862 of the part that comprises this incision, and diapire 35 is held in place between the side wall portion 721,722,723 of notch part 722b, 723b both sides.
As shown in FIG. 12 and 13, the periphery 71e of the rear end left comer portion of lower casing 70 overlooks periphery circular-arc of DC motor 2 being formed as while observation along being contained in lower casing 70, is formed with flange part 89 in upper shell 30 1 sides.This flange part 89 is formed as the heavy wall with flange bearing portion 36 same degree of upper shell 30, and the upper surface open screwed hole 89a (with reference to Figure 20 (b)) being provided with in the position corresponding with the through hole 36a of upper shell 30 at this flange part 89.
On side wall portion 722, in the fixing location division 87 that is provided with cylindrical shape with near of axle sleeve 862, this location division 87 forms with the height identical with stage portion 722a integratedly with side wall portion 722.87 center, location division with shell 30 1 sides upward above outstanding mode be formed with alignment pin 87a, this alignment pin 87a is located at the position of mating with the location hole 39a of upper shell 30.In addition, as shown in Figure 21 (b), location division 87 also from diapire 71 towards below outstanding ormal weight, near extended hole 87b upper end at its lower ending opening.Hole 87b can be used for gear motor 1 to be installed on lid.
In addition, as shown in FIG. 12 and 13, in diapire 71, be roughly provided with the column 88 of drum in the position at diagonal angle with alignment pin 87a.This column 88 is set as from diapire 71 and extends the top of shell 30 1 sides upward, and has the size (with reference to Figure 21 (a)) of mating with the internal diameter of the location hole 37b of upper shell 30.In addition, the position of mating with through hole 371a upper shell 30 on column 88 is provided with screwed hole 88a.The height that column 88 is configured to upper end becomes the position of the lower surface of the partition 371 of positioning shaft sleeve 37 when shell 30 is overlapping with lower casing 70 on making, and with rib 724b (with reference to Figure 12 (b))) be connected to improve rigidity with side wall portion 724.
In the time of the upper shell 30 of assembling and lower casing 70, by the alignment pin 87a of the location division of lower casing 70 87 and column 88 being inserted to the location hole 39a of positioning shaft sleeve 39 and the location hole 37b of positioning shaft sleeve 37 of upper shell 30, upper shell 30 is positioned to lower casing 70.
[train of reduction gears]
Then, the each gear to train of reduction gears 5 (the first gear G1～four gear G4) and the structure of output gear Gf describe.As shown in Figure 3, the first gear G1 has the small-diameter gear 91b extending along axis X 1 and is located at the large diameter gear 91a of one end of this small-diameter gear 91b, and large diameter gear 91a is formed at one end by lid 10 1 sides of small-diameter gear 91b.In the first gear G1, the inserting hole 91c inserting for the first bolster S1 runs through large diameter gear 91a and small-diameter gear 91b and forms.Being supported at both ends in of the first bolster S1 covered 10 axis hole 21 and the supporting sleeve 81 (axis hole 81a) of lower casing 70, and the first gear G1 that is sheathed on this first bolster S1 is set as and can rotates around axis X 1.
Small-diameter gear 91b is set as the gear through hole 61 that runs through the base 33 of being located at shell 30, in the space S u of large diameter gear 91a between upper shell 30 and lid 10.The pinion 90 of DC motor 2 is also positioned at this space S u, and large diameter gear 91a engages with this pinion 90.
In space S d between upper shell 30 and lower casing 70, near on the upside of base 33 of shell 30, the large diameter gear 92a of the second gear G2 engages with the small-diameter gear 91b of the first gear G1.
The second gear G2 has the small-diameter gear 92b extending along axis X 2 and the large diameter gear 92a that is assembled in this small-diameter gear 92b in the counterrotating mode of energy, and the transmission of the rotary driving force between large diameter gear 92a and small-diameter gear 92b is carried out via the ratchet mechanism between them (torque limiter T).
On small-diameter gear 92b, be formed with in the mode running through the inserting hole 92c inserting for the second bolster S2.The supporting sleeve that is supported at both ends in shell 30 62 (axis hole 62a) of the second bolster S2 and the supporting sleeve 82 (axis hole 82a) of lower casing 70, the second gear G2 that is sheathed on this second bolster S2 is set as and can rotates around axis X 2.
Figure 14 is the figure of the torque limiter T of explanation the second gear G2.As shown in figure 14, large diameter gear 92a has and has the base portion of round-ended cylinder shape 921, is formed with the 92a1 of tooth portion engaging with the small-diameter gear 91b of the first gear G1 in the periphery of this base portion 921.From the end on observation of axis X 2, large diameter gear 92a has cam surface 922 therein week, engages with this cam surface 922 from the extended arm 926 of base portion 925 of small-diameter gear 92b.Arm 926 circumferentially extended along the outer Zhou Dynasty of the base portion 925 of small-diameter gear 92b, in execution mode, was upwards provided with altogether three arms 926 in the week around axis X 2.The front of arm 926 is provided with the pawl 927 outstanding towards radial outside, this front can be towards internal side diameter strain, by this, form torque limiter T, this torque limiter T is in the lock state conventionally, the rotation of small-diameter gear 92b and large diameter gear 92a one, but applied relative rotating torques more than ormal weight between large diameter gear 92a and small-diameter gear 92b time, arm 926 strains, pawl 927 slides and rotation relatively on cam surface 922.The larger torque of torque that relative rotating torques more than afore mentioned rules amount is set as specific energy and lifts lid.
In addition, (with respect to the circumference centered by the pivot by small-diameter gear 92b (X2)) gradient of the face engaging with pawl 927 towards a direction rotation in the situation that at small-diameter gear 92b in the cam surface 922 of large diameter gear 92a is less, one side is to being the direction (counter clockwise direction of Figure 10) that index arm 926 extends from base portion 925, and the gradient of the face engaging with pawl 927 in the situation that small-diameter gear 92b rotates towards other direction in the cam surface 922 of large diameter gear 92a is larger, above-mentioned other direction refers to the direction (clockwise direction Figure 10) of the opposite direction extending from base portion 925 with arm 926.Therefore, how the direction of rotation of arm 926 strains counterrotating torque small-diameter gear 92b and pawl 927 slides on cam surface 922 is all identical
On the small-diameter gear 92b of the second gear G2, be provided with the axial region 928 of tubular in the mode adjacent with the base portion 925 that is provided with arm 926, be formed with the 92b1 of tooth portion engaging with the large diameter gear 93a of the 3rd gear G3 in the periphery of this axial region.
The 3rd gear G3 has large diameter gear 93a and small-diameter gear 93b, and heart portion is formed with the inserting hole 93c inserting for the 3rd bolster S3 therein.The supporting sleeve that is supported at both ends in shell 30 63 of the 3rd bolster S3 and the supporting sleeve 83 of lower casing 70, the 3rd gear G3 that is sheathed on the 3rd bolster S3 is set as and can rotates around axis X 3.Small-diameter gear 93b is positioned at the lower position that more leans on diapire 71 1 sides than large diameter gear 93a, and the large diameter gear 94a of the 4th gear G4 engages with the periphery of small-diameter gear 93b.
The 4th gear G4 has the small-diameter gear 94b extending along axis X 4 and is located at the large diameter gear 94a that has round-ended cylinder shape of one end of this small-diameter gear 94b, and heart portion is formed with to run through the mode of small-diameter gear 94b and large diameter gear 94a the inserting hole 94c inserting for the 4th bolster S4 therein.
The supporting sleeve that is supported at both ends in shell 30 64 of the 4th bolster S4 and the supporting sleeve 84 of lower casing 70, the 4th gear G4 that is sheathed on the 4th bolster S4 is set as and can rotates around axis X 4.
Be formed with the tooth portion of engaging with the small-diameter gear 93b of the 3rd gear G3 in the periphery of large diameter gear 94a, in the length range in the periphery of small-diameter gear 94b at length direction, be formed with the tooth portion of engaging with output gear Gf and sensor gear 137.
[output gear]
Figure 15 is the figure of explanation output gear Gf, Figure 15 (a) is stereogram, Figure 15 (b) be from cover 10 unilateral observations to vertical view, Figure 15 (c) be from lower casing 70 unilateral observations to upward view, Figure 15 (d) is the A-A cutaway view of Figure 15 (c).
Output gear Gf has as the axial region 250 of the tubular of rotating shaft and surrounds the cylindrical portion 251 of this axial region 250 with predetermined distance, and axial region 250 is to be connected with the reinforced wall 254 that is radiated entends from the periphery of axial region 250 towards the connecting wall 253 radially extending by the one end from axial region 250 with cylindrical portion 251.
The axial region 255 that is provided with the tubular that diameter is less than the diameter of axial region 250 below 70 1 sides of shell on the lower of axial region 250, this axial region 255 is located at lower casing 70 gear support portion 79 as rotating shaft is supported to and can rotates.The recess 255c that the interior Zhou Chengwei of axial region 255 and output link 210 are chimeric, this recess 255c is in the time supporting output gear Gf with lower casing 70, at the opening 71d1 of this lower casing 70 inner opening.During from end on observation, being formed with two faces parallel to each other in the inside of recess 255c is opposite side distance 255a, 255a, is formed with keyway 255b, 255b at the substantial middle place of this opposite side distance 255a, 255a.
A side contrary with axial region 255 of axial region 250 be provided with diameter than the large axial region 256 of the diameter of axial region 255 using as rotating shaft, the gear support wall 45 that this axial region 256 is located at shell 30 is supported to and can rotates.The embedded hole 256c that the interior Zhou Chengwei of axial region 256 and output link 200 are chimeric, this embedded hole 256c is in the time that the gear support wall 45 of using shell 30 supports axial region 256, at opening 334 inner openings of upper shell 30.Being formed with two faces parallel to each other in the inside of this embedded hole 256c is opposite side distance 256a, 256a, is formed with keyway 256b, 256b at the substantial middle place of this opposite side distance 256a, 256a.
As shown in Figures 1 and 3, on axial region 255,256, by mode embedded and that rotate with one, output link 200,210 is installed respectively.The basic configuration of output link 200,210 is cylinder and is resin or metal, output link 200,210 is at the axial fitting portion 201,211 of the residual Rack in substantial middle place, and comprises in the upper and lower of periphery that respectively two parallel faces are opposite side distance portion.Output link 200,210 has the opposite side distance portion corresponding with opposite side distance 255a, 255a, 256a, the 256a of above-mentioned axial region 255,256 and the ridge corresponding with keyway 255b, 255b, 256b, 256b, and is pushed down into axial region 255,256 at the confined state of relative rotation with respect to axial region 255,256 around axis X a.
As shown in figure 15, be formed with the 251a of tooth portion engaging with the small-diameter gear 94b of above-mentioned the 4th gear G4 in the periphery of cylindrical portion 251, in addition, while being also provided with from end on observation, be fan-shaped limiting section 257.Limiting section 257 is that give prominence to and the cylindrical member of formation the below from cylindrical portion 251 towards lower casing 70 1 sides, and its arcuation outer peripheral face 257c is positioned at the dotted line Im3 upper (with reference to Figure 15 (c)) of the periphery of the 251a of connection teeth portion.Limiting section 257 has: along the arcuation outer peripheral face 257c of external diameter and the arcuation inner peripheral surface 257d of close base portion of the 251a of tooth portion; And by arcuation outer peripheral face 257c be connected with arcuation inner peripheral surface 257d, towards circumferential bearing surface 257e, the 257f along the warp extending from axle center, limiting section 257 extends towards axial below from the upper end of the 251a of tooth portion and from the outstanding ormal weight h in lower end of the 251a of tooth portion.Limiting section 257 has opening in the top and extends in the axial direction the spring-loaded hole 257a of ormal weight, will be formed as lightening hole 257b than spring-loaded hole 257a part more on the lower.The other end Sp2 of the spring Sp that is sheathed on the axial region 256 of output gear Gf and install is inserted into spring-loaded hole 257a.Therefore, limiting section 257 also becomes the spring maintaining part of inserting and it being kept for the other end Sp2 of spring Sp.
Then, the assembling of the train of reduction gears 5 to housing 7 (the first gear G1～four gear G4), output gear Gf, spring Sp describes.
In order to assemble train of reduction gears 5, first, lower casing 70 is being put under the state on assembly or fitting table, by corresponding axis hole 82a, 83a, 84a on the diapire 71 of the lower end insertion lower casing 70 of the bolster S2～S4 of the each gear G2～G4 except the first gear G1.Then, each bolster S2～S4 is inserted to inserting hole 92c～94c of each gear G2～G4.Now, under the state that the large footpath 92a～94a of tooth portion and small-diameter gear 92b～94b are engaged with the corresponding teeth portion of adjacent gear, each gear G2～G4 is assembled.
In the time that the assembling of the second gear G2 to the four gear G4 of train of reduction gears 5 completes, carry out the assembling of output gear Gf.
The gear motor 1 of execution mode can be connected with the arbitrary end in one end of the rotating shaft of lid and the other end.As mentioned above, drive lid to rotate around trunnion axis (rotating shaft), there is situation about being connected with the right side of this trunnion axis and situation about being connected with the left side of this trunnion axis during from radially the observing of trunnion axis in gear motor 1, this is due to the contrary cause of direction of rotation at the output gear Gf with the situation of right side connection and make lid towards open position one side drive with left side is connected time.Therefore, prepared two kinds of different spring Sp of coiling direction of coil portion, be installed on which end in one end and the other end of rotating shaft of lid according to gear motor 1, selected suitable spring, and be installed on output gear Gf.This is because following cause: in situation that gear motor 1 is connected with one end of the rotating shaft of lid with gear motor 1 is connected with the other end, the direction (closing direction) that output gear Gf moves under the Gravitative Loads of lid is contrary, be respectively clockwise direction and counter clockwise direction, the direction difference of the active force being produced by spring Sp.
Figure 16 is the figure of the assembling position of explanation spring Sp, and it is to the figure according to lid is described by the situation that is urged to the relation of fully open position from full close position, output link 200,210 is connected with lid in the time that output gear Gf rotates towards counter clockwise direction in figure.Figure 17 is the figure of the assembling position of explanation spring Sp ', and it is to the figure according to lid is described by the situation that is urged to the relation of fully open position from full close position, output link 200,210 is connected with lid in the time that output gear Gf rotates towards clockwise direction in figure.
Herein, Figure 16 (a) and Figure 17 (a) are that explanation is assembled in the spring Sp of output gear Gf, the figure of Sp ', Figure 16 (b) and Figure 17 (b) represent that output gear Gf is disposed at the vertical view of the state of the assembling position of spring, and Figure 16 (c) and Figure 17 (c) are illustrating that spring assembling represents the figure of the face of 70 1 sides of shell on the lower of the upper shell overlapping with lower casing 70 in the upside of the vertical view of the state of the output gear Gf being supported by lower casing 70.In addition, in Figure 16 (c) and Figure 17 (c), show spring Sp, Sp ' in order to differentiate with other part with hacures.
In the case of the relation that makes lid court open direction driving according to the anticlockwise rotation of Figure 16 of output gear Gf (b) is connected output link 200,210 with lid, use the spring Sp of the right volume shown in Figure 16 (a).The in the situation that of this spring Sp, in the time making upper shell 30 overlapping with lower casing 70, make the engaging groove 65a engaging of an end Sp1 and the upper shell 30 of spring.Therefore,, in the time that the other end Sp2 of the spring Sp under free state has been inserted to the spring-loaded hole 257a of output gear Gf, need make an end Sp1 of spring Sp mate with engaging groove 65a.
Herein, the position of engaging groove 65a when shell 30 is overlapping with lower casing 70 on making is the position shown in double dot dash line in Figure 16 (b).Thus, the consistent angle position (the spring assembling position shown in Figure 16 (b)) of phase difference θ between an end Sp1 and the other end Sp2 of the spring Sp of phase difference θ between engaging groove 65a and the limiting section 257 of output gear Gf can make output gear Gf turn to from end on observation time when from end on observation, making after output gear Gf turns to this spring assembling position, an end Sp1 of spring Sp is inserted to spring-loaded hole 257a from close observer's one side, so that spring Sp is installed on to output gear Gf.; in the time of the state of spring Sp in not rolling tightly; if making the axial holding section of spring Sp is that the other end Sp2 engages with the spring-loaded hole 257a of output gear Gf in the extraneous position of the driving as open position side, the radially holding section of spring Sp is that an end Sp1 becomes the position corresponding with the engaging groove 65a that is located at upper shell 30.The extraneous position of driving that this spring assembling position is lid side in an open position, it is that lid is that output gear Gf turns to the position of more leaning on open position side than fully open position.Therefore, have as the confinement block 802 of the confined planes of the limiting unit that output gear Gf is limited around the rotating range of axis X a and be more located at lower casing 70 by the position of open position side than this spring assembling position.
In addition, when in the time that this state (spring assembling position) makes upper shell 30 overlap on lower casing 70 afterwards, load inclined plane 461a～465a, the 351a (also with reference to Figure 10, Figure 19) that are located at the face of 70 1 sides of shell on the lower of upper shell 30 in the spring Sp of output gear Gf and guide in the gap St (spring receiving space) of the gear support wall 45 that surrounds upper shell 30.In addition, be provided with for an end Sp1 of spring Sp is guided to the inclined plane 651 in engaging groove 65a on upper shell 30, therefore, an end Sp1 of spring Sp is directed in engaging groove 65a.
By this, make an end Sp1 and the 65a engaging of engaging groove and the other end Sp2 is inserted under the state of spring-loaded hole 257a, spring Sp is assembled in housing 7.
Being assembled with in the gear motor 1 of this spring Sp, in the time that output gear Gf rotates toward the clockwise direction, be rolled tightly by the spring Sp of engaging groove 65a spline.Thus, the active force that this output gear Gf is counterclockwise rotated acts on output gear Gf from spring Sp, and lid is near off-position side, and this active force is larger.
In addition, in the case of the relation that makes lid court open direction driving according to the clockwise rotation of Figure 17 of output gear Gf (b) is connected output link 200,210 with lid, use the spring Sp ' of the left volume shown in Figure 17 (a).
The in the situation that of this spring Sp ', in the time making upper shell 30 overlapping with lower casing 70, make the engaging groove 65b engaging of an end Sp1 and the upper shell 30 of spring Sp '.Therefore,, in the time the other end Sp2 of the spring Sp ' under free state having been inserted to the spring-loaded hole 257a of the limiting section 257 as spring maintaining part of output gear Gf, need make an end Sp1 of spring Sp ' mate with engaging groove 65b.
Herein, the position of engaging groove 65b when shell 30 is overlapping with lower casing 70 on making is the position shown in double dot dash line in Figure 17 (b).Thus, the consistent angle position (the spring assembling position shown in Figure 17 (b)) of phase difference θ between an end Sp1 and the other end Sp2 of the spring Sp ' of phase difference θ between engaging groove 65b and the limiting section 257 of output gear Gf can make output gear Gf turn to from end on observation time when from end on observation, making after output gear Gf turns to this spring assembling position, the other end Sp2 of spring Sp ' is inserted to spring-loaded hole 257a from close observer's one side, so that spring Sp ' is installed on to output gear Gf.; in the time of the state of spring Sp ' in not rolling tightly; if making the axial holding section of spring Sp ' is that the other end Sp2 engages with the spring-loaded hole 257a of output gear Gf in the extraneous position of the driving as open position side, the radially holding section of spring Sp ' is that an end Sp1 becomes the position corresponding with the engaging groove 65b that is located at upper shell 30.This spring assembling position is the extraneous position of driving that uses the lid side in an open position in the situation of spring Sp ', and it is that lid is that output gear Gf turns to than fully open position more by the position of open position side.Therefore, have as the confinement block 801 of the confined planes of the limiting unit that output gear Gf is limited around the rotating range of axis X a and be more located at lower casing 70 by the position of open position side in the spring assembling position than use this spring Sp ' in the situation that.
In addition, when in the time making shell 30 overlap on lower casing 70 after this state, load inclined plane 461a～465a, the 351a (also with reference to Figure 10, Figure 19) that are located at the face of 70 1 sides of shell on the lower of upper shell 30 in the spring Sp ' of output gear Gf and guide in the gap St (spring receiving space) of the gear support wall 45 that surrounds upper shell 30.In addition, be provided with for an end Sp1 of spring Sp ' is guided to the inclined plane 651 in engaging groove 65b on upper shell 30, therefore, an end Sp1 of spring Sp ' is directed in engaging groove 65a.
By this, make an end Sp1 and the 65b engaging of engaging groove and the other end Sp2 is inserted under the state of spring-loaded hole 257a, spring Sp ' is assembled in housing 7.
Being assembled with in the gear motor 1 of this spring Sp ', in the time that output gear Gf counterclockwise rotates, be rolled tightly by the spring Sp ' of engaging groove 65a spline.Thus, the active force that this output gear Gf is rotated toward the clockwise direction acts on output gear Gf from spring Sp ', and lid is near off-position side, and this active force is larger.
Herein, in the gear motor 1 of execution mode, take by axis X a at the upwardly extending straight line Lm in front and back (with reference to Figure 18) of housing 7 as border, engaging groove 65a, 65b and confinement block 801,802 are set as symmetry.Therefore, no matter be in the situation that when output gear Gf rotates toward the clockwise direction in the drawings, lid is driven towards off-position, or the in the situation that lid being driven towards off-position in the time that output gear Gf counterclockwise rotates, can use housing 7 (lower casing 70 and upper shell 30).
Under the state completing towards the configuration of lower casing 70 at output gear Gf, each bolster S2～S4 together with alignment pin 87a and column 88 in erectility parallel to each other.Therefore, make positioning shaft sleeve 37,39 and column 88 and the alignment pin 87a contraposition of shell 30 on one side, carry out the mounting of upper shell 30 towards lower casing 70 on one side.Now, the upper end of bolster S2～S4 of each gear G2～G4 embeds the corresponding axis hole 62a～64a of upper shell 30, but topple over slightly and not with the just right bolster of the corresponding axis hole of upper shell, regulate as required the upper end position of bolster in existence, then embedding axis hole.
In addition, upper shell 30 was being loaded before lower casing 70, the DC motor 2 that substrate 100 is installed is being installed in advance to the rear side of base 33.Herein, DC motor 2 is connected with substrate 100 by soldering in advance together with aftermentioned connector 95.In addition, the end of the distribution W of the substrate 151 of connection substrate 100 and angular transducer 150 is connected with corresponding respectively substrate 100,150 by soldering.Like this, can carry out soldering operation at the position away from housing 7.Therefore,, in soldering operation, even if there is scolding tin, solder flux such situation of dispersing, also can prevent that them from entering in housing 7.In addition, upper shell 30 was being loaded before lower casing 70, the distribution W of connection substrate 100 and substrate 151 is pressed in distribution resettlement section 336 from the breach 42 of the side opening of the side wall portion 322 of shell 30 upward, and the angular transducer 150 being connected with one end of distribution W is put on base 33.
Like this, in the time that upper shell 30 completes towards the mounting of lower casing 70, make the small-diameter gear 91b of the first gear G1 insert the gear through hole 61 (with reference to Fig. 7) of shell 30, so that small-diameter gear 91b engages with the large diameter gear 92a of the second gear G2, and large diameter gear 92a is engaged with pinion 90.
Under the overlapping state of upper shell 30 and lower casing 70, by positioning shaft sleeve 37,39 with the chimeric of column 88, alignment pin 87a in the horizontal direction, with in the axial vertical face of each bolster, axis hole is positioned.Therefore, even if unlike prior art with screw by two members (upper shell 30 and lower casing 70) combination, also can form the state being supported with high-precision axle base between each gear.
Under the overlapping state of upper shell 30 and lower casing 70, the diapire 35 of upper shell 30 embed respectively notch part 722b, the 723b of side wall portion 722,723 of lower casing 70 and dropping place in the fixing upper end with axle sleeve 861,862, the through hole 35a of diapire 35 forms a line with screwed hole 861a, the 862a of axle sleeve 861,862 with fixing.In addition, flange bearing portion 36 dropping places of the wall thickness of upper shell 30 rear end left comer portions are in the flange part 89 of lower casing 70, and the through hole 36a of upper shell 30 and the screwed hole 89a of lower casing 70 form a line.In addition, the lower surface dropping place of the partition 371 of the positioning shaft sleeve 37 of the upper shell 30 of the column 88 of embedding lower casing 70 is in the upper end of column 88, and the through hole 371a of partition 371 and the screwed hole 88a of column 88 form a line.The Lower Half of the breach 42 of upper shell 30 is closed by the projection piece 725 of lower casing 70.
By after overlapping with lower casing 70 upper shell 30, angular transducer 150 is installed on to base 33.
Herein, in the gear motor 1 of execution mode, when lid arrives the position (open position: tilt about 120 ° with respect to horizontal line: Figure 18 (a) that stands up, the fully open position of output gear Gf in Figure 18 (b)) time, the active force of spring Sp acts on output gear Gf hardly, along with from the position of standing up towards horizontal level (off-position: become 0 ° with respect to horizontal line: Figure 18 (a), the full close position of output gear Gf in Figure 18 (b)) rotate, produced by spring Sp, make lid become large towards the active force of the direction rotation of opening.As mentioned above, spring Sp and Sp ' make following active force act on output gear Gf, this active force is towards contrary direction (the opening direction) effect of the direction (closing direction) of moving under the Gravitative Loads of lid with output gear Gf, towards the directive effect that lid is rotated towards open position side.Therefore, can to reduce to close the required breakdown torque of lid in order opening, thereby to adopt the DC motor 2 that breakdown torque is less.In addition, spring Sp and Sp ' are installed on output gear Gf, therefore, can reduce the load of output gear Gf and train of reduction gears 5.In addition, even if in the situation that user closes lid suddenly, (open direction) in the opposite direction and work due to the active force of spring Sp and Sp ', therefore also can reduce the load of output gear Gf and train of reduction gears 5.Therefore, can form the first gear G1～four gear G4 with low intensive materials such as resins, and can reduce module, the facewidth and make the first gear G1～four gear G4 miniaturization.
Gear motor 1 is according to the angle position of the lid of being determined by angular transducer 150, particularly utilize not shown control device to be controlled according to the angle position of output gear Gf.In addition, by critically detecting the horizontal level side of lid, the i.e. angle position of the off-position side of lid, although can prevent lid sudden toppling or arrive the still situation towards off-position side drive by lid of off-position.
Therefore, in the gear motor 1 of execution mode, especially in order to detect exactly the angle position of lid in off-position side, in the time that output gear Gf is positioned at the angle position corresponding with the assigned position of off-position side, assembling sensor gear 137.
Below, the assembling of sensor gear is described and for detection of the installation of angular transducer of angle position that goes out lid (output gear Gf).Figure 18 is the figure of the assembling position of explanation sensor gear.Figure 18 (a) is the key diagram of the assembling position of the sensor gear 137 the gear motor 1 that output gear Gf is connected with lid of the relation in the case of be urged to fully open position from full close position according to output gear Gf lid when counterclockwise rotating in figure.Figure 18 (b) be in the case of according to output gear Gf towards in figure when clockwise direction rotation lid be urged to the key diagram of the assembling position of the sensor gear 137 the relation of fully open position is connected output gear Gf gear motor 1 with lid from full close position.
As shown in Figure 9, angular transducer 150 is the variable resistors that comprise potentiometer 135 on substrate 151, described potentiometer 135 has along the resistive element (not shown) of the circumferential setting of rotating shaft 138 and the brush (not shown) sliding on the surface of this resistive element, angular transducer 150 makes sensor gear 137 be positioned at the below of substrate 151, and the axle 138a of sensor gear 137 runs through substrate 151 and potentiometer 135.The not shown rotating part of potentiometer 135 inside and the rotation of axle 138a one.Herein, the number of teeth of the small-diameter gear 94b of the number of teeth of sensor gear 137 and the 4th gear G4 is approximate.
In addition, the terminal being connected with one end of resistive element, the terminal being connected with the other end of resistive element and be that these three terminals of terminal that brush is connected are connected with the terminal 95a～95c of the connector 95 that is arranged at lower casing 70 via the distribution 100a～100c of distribution W and substrate 100 with movable part.Therefore, only put on the polarity of the voltage at resistive element two ends by conversion, just can make the change direction upset of the voltage of the terminal output from being connected with movable part.Thus, in the rotation of a direction of output gear Gf, the rotation of situation that lid rotates from open position towards off-position and another direction is made in the arbitrary situation situation that lid rotates from open position towards off-position, only the polarity of changing voltage just can make output signal become identical, therefore, can adopt same angular transducer 150.
In the case of being urged to from full close position according to output gear Gf lid when counterclockwise rotating in figure the relation of fully open position is connected output gear Gf with lid, before assembling sensor gear 137, output gear Gf is located at the angle position (spring assembling position) (with reference to Figure 18 (a)) that the active force of spring Sp does not act on.From this state, make output gear Gf (close the direction of lid) toward the clockwise direction and rotate, until turn to the limiting section 257 of output gear Gf and confinement block 801 butts of lower casing 70.
Under this state, spring Sp is rolled tightly, therefore, from spring Sp make output gear Gf counterclockwise (open the direction of lid) rotate active force act on this gear Gf.
In execution mode, making this limiting section 257 and the position of confinement block 801 butts is the assembling position (transducer assembling position) of sensor gear 137, under this state, make sensor gear 137 insert the inserting hole 55 of shell 30 and engage with the small-diameter gear 94b of the 4th gear G4 that is positioned at inserting hole 55.In addition, the position that counterclockwise rotates predetermined angular from this assembling position is the angle position corresponding with the full close position of lid.In addition, the angle position from this full close position counterclockwise rotates roughly 120 ° is the angle position corresponding with the fully open position of lid.
In addition, in the case of output gear Gf being connected with lid towards the relation that lid is urged to fully open position from full close position when clockwise direction rotation in figure according to output gear Gf, before assembling sensor gear 137, output gear Gf is located at the angle position (spring assembling position) (with reference to Figure 18 (b)) that the active force of spring Sp does not act on.From this state, make output gear Gf counterclockwise (close the direction of lid) and rotate, until turn to the limiting section 257 of output gear Gf and confinement block 802 butts of lower casing 70.
Under this state, spring Sp is rolled tightly, therefore, from spring Sp make output gear Gf (open the direction of lid) toward the clockwise direction rotate active force act on this gear Gf.
In execution mode, making this limiting section 257 and the position of confinement block 802 is the assembling position (transducer assembling position) of sensor gear 137, under this state, make sensor gear 137 insert the inserting hole 55 of shell 30 and engage with the small-diameter gear 94b of the 4th gear G4 that is positioned at inserting hole 55.In addition, the position that rotates toward the clockwise direction predetermined angular from this assembling position is the angle position corresponding with the full close position of lid.In addition, the angle position from this full close position counterclockwise rotates roughly 120 ° is the angle position corresponding with the fully open position of lid.
In the gear motor 1 of execution mode, angular range between this full close position and fully open position is set to the slewing area (scope of application) of output gear Gf, in the time driving lid to rotate, the limiting section 257 of output gear Gf does not contact each other with confinement block 801.
Herein, in the gear motor 1 of execution mode, there is following structure: the straight line Ln extending take the axis X a of the pivot by as output gear Gf is as border, and side disposes train of reduction gears 5 and engaging groove 65a, 65b in the wings on the Width of housing 7.Therefore, the diameter of the leading section of the semicircular in shape of housing 7 is the diameters corresponding to the diameter of output gear Gf, and the width of rear side is the width corresponding to the configuration of train of reduction gears 5.In addition, the semicircle of leading section is the concentric circles concentric with output gear Gf.Particularly, there is interior week of side wall portion 721 of certain thickness lower casing 70 relative with the 251a of tooth portion of output gear Gf with certain gap.Therefore, can suppress the size that the coupling part being connected with rotating shaft lid gear motor 1 is the front side of housing 7 (from the rotating shaft of lid till the size of the end of front, right-hand, left), therefore, can prevent well following situation: in the time that gear motor 1 is assembled in to the device of lid side, the main body of gear motor is significantly outstanding and affect the outward appearance of device from device.
In the time that the assembling of transducer 137 completes, make the small-diameter gear 91b of the first gear G1 insert the gear through hole 61 (with reference to Fig. 7) of shell 30, so that small-diameter gear 91b engages with the large diameter gear 92a of the second gear G2, and large diameter gear 92a is engaged with pinion 90.Stage before assembling the first gear G1, output gear Gf is not directly connected via train of reduction gears 5 with DC motor 2, therefore, can easily carry out the corresponding adjusting of the location of output gear Gf and the angle position of output gear Gf and the angle position of sensor gear 137.
In addition carry out, the assembling of angular transducer 150 parts such as grade.As shown in Figure 6, substrate 151 has the tabular flat shape of shuttlecock playing, and it has pin-and-hole 152 at the little leading section of width, and has two pin-and-holes 153,154 in the large rearward end of width.Thus, make respectively the pin 50 of the first supporting station 49 and the pin of the second supporting station 51 52,53 insert the pin-and-hole 152,153,154 of substrate 151, to carry out the installation (with reference to Fig. 6, Fig. 7) of angular transducer 150.In addition, lid 10 (with reference to Fig. 5) press axle sleeve 19 be configured to corresponding with the pin 52,53 of the second supporting station 51, and have can supply and marketing 52,53 holes of inserting, press near the position rear side of pin 50 that axle sleeve 18 is set in the first supporting station 49.
Substrate 151 dropping places are in the upper surface of the first supporting station 49 and the second supporting station 51, and the axle sleeve 18,19 of pressing of tegmentum 10 is pressed and fixed position.In addition,, in the time that lid 10 and the sensor gear 137 of supporting sleeve 20,56 that is supported on upper shell 30 are rotated, potentiometer 135 detects its anglec of rotation, represents that the signal of the anglec of rotation detecting is output via the distribution W extending from potentiometer 135.
In addition, the absolute angle scope that potentiometer 135 can detect is limited in the scope of revolving turn around (360 °), therefore, output gear Gf, the 4th gear G4 and sensor gear 137 number of teeth are separately set for: in the time that output gear Gf rotates to its maximum anglec of rotation, the anglec of rotation of the sensor gear 137 being issued in the effect that arrives the speed increasing ratio of sensor gear 137 from output gear Gf via the 4th gear G4 is less than 360 °.
As shown in Figure 9, sensor gear 137 is rotated near the lower surface of the base 33 of upper shell 30, and engages towards the small-diameter gear 94b of interior the 4th outstanding gear G4 of inserting hole 55 with a part for periphery.
In execution mode, angular transducer 150 uses potentiometer, therefore, even if change in the situation such as weight, shape of lid in design, makes the degree of freedom of angle initialization of the output gear Gf that the control of motor changes also higher.
Sensor gear 137 makes axle 138b be supported on supporting sleeve 56 near axially, the engaging piece engaging with sensor gear 137 of the small-diameter gear 94b of the 4th gear G4 is near the upper end of supporting sleeve 64 of its 4th bolster S4 of supporting, and supporting sleeve 56,64 is all formed at the base 33 of same upper shell 30.Therefore, its axle base can not be subject to the impact producing because of the error accumulation of multiple members, but is stablized and keep accurately appropriate value, this appropriate value to be configured to make the backlash of between cog as far as possible little in the scope that train of reduction gears 5 is not applied braking.
In addition, the number of teeth of the small-diameter gear 94b of sensor gear 137 and the 4th gear G4 is approximate and diameter is less, and axle base is less, and therefore, backlash is also less in this.Output gear Gf and the 4th gear G4 bolster separately are also supported on shared upper shell and lower casing, the precision of axle base is higher, therefore, backlash is also less, consequently, for angular transducer 150 to output gear Gf with apply the bed flat position of lid of braking by DC motor 2 near the detection carried out of corresponding position of rotation, also can obtain high accuracy.
In the time that the assembling of angular transducer 150 completes, cover 10 mountings of shell 30 upward.First, make to cover 10 alignment pin 171 and axle sleeve 161 and location hole 39a, 37a contraposition (with reference to Figure 21 (b), Figure 20 (b)), and make to cover 10 overlapping with the train of reduction gears installing department 32 of upper shell 30.Therebetween, the upper end of the first bolster S1 of the first gear G1 embeds the corresponding axis hole 21 (with reference to Fig. 3) of upper wall portions 11.
Under lid 10 and the overlapping state of upper shell 30, the projection piece 725 by lower casing 70 of the breach 42 of upper shell 30 is closed and projection piece 125 that remaining part is first half tegmentum 10 is closed (with reference to Figure 22 (b)).Under the overlapping state of lid 10 and upper shell 30, arcuation wall portion 132 embeds breach recess 310b, the lower surface dropping place of the diapire 131 of arcuation wall portion 132 is in the upper surface (with reference to Figure 20 (a)) of the diapire 35 of breach recess 310b, and flange part 14 dropping places of lid 10 are in the flange bearing portion 36 (with reference to Figure 20 (b)) of upper shell 30.In addition, the lower surface dropping place of the diapire of the axle sleeve 161 of insertion location hole 37a is in the upper surface (with reference to Figure 21 (a)) of the partition 371 of positioning shaft sleeve 37.
The through hole 35a of the diapire 35 of the through hole 131a of the diapire 131 of arcuation wall portion 132 and breach recess 310b form a line (with reference to Figure 20 (a)), therefore, run through these through holes screw 8 screwed in from top fixing screwed hole 861a, the 862a with axle sleeve 861,862 of lower casing 70.The through hole 14a of flange part 14 and the through hole 36a of flange bearing portion 36 form a line (with reference to Figure 20 (b)), therefore, run through these through holes screw 8 is screwed in from top the screwed hole 89a of flange part 89 of lower casing.The through hole 371a of the through hole 16a of axle sleeve 161 and the partition 371 of positioning shaft sleeve 37 forms a line (with reference to Figure 21 (b)), therefore, runs through these through holes screw 8 is screwed in from top the screwed hole 88a of column 88 of lower casing 70.By this, lid 10, upper shell 30 and lower casing 70 screw portion's combination at the screw at four angles of essentially rectangular portion.
In addition, in execution mode, the screw portion of screwing refers to (with reference to Fig. 5) around the through hole 14a, the 16a that cover in 10,131a, and around screwed hole 88a, the 89a of through hole 35a, 36a, 371a (with reference to Fig. 6) and the lower casing 70 of upper shell 30 corresponding thereto, 861a, 862a, (with reference to Figure 13) becomes similarly screw and screw portion.Screw in towards screwed hole 88a, 89a, 861a, 862a from above-mentioned through hole 14a, 16a, 131a by screw 8, lid 10, upper shell 30 and lower casing 70 screw portion's combination at the screw at four angles of train of reduction gears installing department 32.In addition, in the time using tapping screw as screw 8, screwed hole 88a, 89a, 861a, 862b can be also the forms without the guide hole of thread groove.
Increase arcuation wall portion 351 in order to be used for the displacement of restraining spring, therefore, supply the diapire 131 of arcuation wall portion 132 of lid 10 and the height and position of the diapire 35 of upper shell 30 slightly low (with reference to Figure 20 (a)) of the head dropping place of screw 8, but in the level identical with the flange bearing portion 36 of upper shell 30 and the diapire 16c of accepting hole 16b (with reference to Figure 21 (a)), the thickness that each screw of upper shell 30 screws portion does not have larger difference yet, therefore, four screws are as long as the identical a kind of screw of length.
Screw screws each installing hole and the screwed hole of portion and all guarantees suitable area around, and is formed as heavy wall, therefore, can increase the power that screws of screw.Therefore, for example, be integrally formed in utilization the comparison that engages that the spring securing member of each member of housing carries out, axially above certainly can obtain higher bond strength, in horizontal direction, also can obtain higher bond strength.
The the first bolster S1 that covers 10 couples of the first gear G1 that engage at the upper surface side of the base 33 of upper shell 30 and the pinion 90 of DC motor 2 supports, and the angular transducer 150 of the upper surface side that is disposed at equally base 33 is protected in order to avoid it is subject to the impact of water.In addition, side wall portion 12 (122～124) at lid 10 arranges stage portion 122a～124a along its lower edge, and the flange 342～345 corresponding with stage portion 122a～124a is set on the base 33 of upper shell 30, therefore, make to cover 10 when making the lower ora terminalis of side wall portion 12 and base 33 butts when overlapping with upper shell 30, flange 342～345 embeds stage portion 122a～124a.That is, side wall portion 12 (122～124) is chimeric to be positioned at the mode in flange 342～345 outsides, to position with upper shell 30 covering 10.Therefore,, even if water is wanted to immerse with the interface of shell 30 from covering 10, flange 342～345 also can become barrier walls and reduce immersion, makes water be difficult for directly arriving inner angular transducer 150.In addition, even if there is interrupting portion on flange, because this interrupting portion is away from the configuration position of angular transducer, therefore also do not affect.
After lid 10, upper shell 30 and lower casing 70 assemble, the projection piece 125 of opening tegmentum 10 and the projection piece 725 of lower casing 70 by side wall portion 322 1 sides of the breach 42 of upper shell 30 stop up, therefore, can prevent from well exposing the side at housing 7 because of the opening that breach 42 produces.
Utilize the train of reduction gears 5 of above structure, the rotation of DC motor 2 is slowed down and be passed to output gear Gf, output link 200,210 is connected with for example fulcrum of lid, thereby lid can be urged to the assigned position (the roughly fully open position of the output gear Gf in the open position of 120 °: Figure 18 (a), Figure 18 (b)) that exceedes 90 ° from approximate horizontal position (full close position of the output gear Gf Figure 18 (a), Figure 18 (b)).Particularly, DC motor at lid from the approximate horizontal position of lying status to roughly driving along opening direction and closing direction 120 ° of positions of erecting, and in the time being about to reach the approximate horizontal position of closing direction, control, slow down to utilize countertorque to apply braking.In addition, be formed with and when torque more than ormal weight puts on the second gear G2, make counterrotating torque limiter T between large diameter gear 92a and small-diameter gear 92b, therefore, even if throw open and close lid under the halted state of DC motor 2, or open and close lid towards the direction contrary with the driving direction of DC motor 2, also can prevent from putting on because of excessive power the breakage that DC motor 2, each gear, its bolster or supporting sleeve etc. produce.In addition, as long as torque limiter T is located at a gear in the gear that forms train of reduction gears 5, be not only defined in the structure of being located at the second gear G2.
In addition, spring Sp is made up of the rounded wire-like members in cross section, and it has: wire-like members is wound into spiral helicine base portion; An end Sp1 who radially extends from one end of the length direction of this base portion; And from other end the other end Sp2 that (length direction) extends vertically of the length direction of this base portion, by changing the coiling direction at base portion place, can use the spring that produces the spring of active force around axis X a towards a direction rotation in the situation that at output gear Gf and produce active force at output gear Gf in the situation that axis X a rotates to another way.By this, the lower edge of engaging groove 65a (65b) side of an end Sp1 is arcuation cross section, and therefore, this arcuation part works as prerotation vane 46 (461～465).Therefore,, in the time making upper shell 30 overlapping with lower casing 70, an end Sp1 is easily directed in engaging groove 65a (65b).
In execution mode, DC motor is equivalent to the motor of invention, and output gear Gf is equivalent to the output shaft of invention, and lower casing 70 is equivalent to the first housing of invention, and upper shell 30 is equivalent to the second housing of invention, and housing 7 is equivalent to the body shell of invention.In addition, the bearing surface 257e of limiting section 257 is equivalent to the first abutting part of invention, and bearing surface 257f is equivalent to the second abutting part of invention.
As mentioned above, in execution mode, gear motor 1 comprises: DC motor 2 (motor), output gear Gf (output shaft), train of reduction gears 5, the output rotation of DC motor is passed to output gear Gf by this train of reduction gears 5, and angular transducer 150, this angular transducer 150 utilizes the sensor gear 137 engaging with any gear in train of reduction gears 5 to detect the rotational angle of output gear Gf, the lid being connected with output gear Gf is rotated, so that lid reciprocating motion between open position and off-position, it is characterized in that, DC motor 2, gear G2～the G4 of output gear Gf and train of reduction gears 5 is located at lower casing 70 (the first housing) and upper shell 30 (the second housing) overlapping and in the housing 7 (body shell) that forms in the axis X a of output gear Gf direction, limit the energy slewing area of output gear Gf by the limiting section 257 (rotating side limiting unit) of being located at output gear Gf and the fixation side limiting unit butt of being located at lower casing 70, fixation side limiting unit has: confinement block 801 (the first fixation side limiting unit), when output gear Gf is in the time that axis X a rotates towards a direction (clockwise direction in Figure 18 (a)), this confinement block 801 and limiting section 257 butts, and confinement block 802 (the second fixation side limiting unit), when output gear Gf is around axis X a (counter clockwise direction in Figure 18 (b)) when rotation to another way, this confinement block 802 and limiting section 257 butts, confinement block 801 is the fixation side limiting units relation that the rotating shaft of output gear Gf and lid makes lid rotate from open position (position of standing up) towards off-position (horizontal level) with the rotation of a direction of output gear Gf situation about linking together, confinement block 802 is the fixation side limiting units relation that the rotating shaft of output shaft Gf and lid makes lid rotate from open position (position of standing up) towards off-position (horizontal level) with the rotation of another direction of output gear Gf situation about linking together, by the set positions of confinement block 801 and confinement block 802 for upper/lower positions: be no matter the relation that with the rotation of a direction of output gear Gf, lid rotated from open position (position of standing up) towards off-position (horizontal level) in the rotating shaft of output gear Gf and lid links together, or the relation that with the rotation of another direction of output gear Gf, lid is rotated from open position (position of standing up) towards off-position (horizontal level) in the rotating shaft of output gear Gf and lid links together, all can be in the time that lid arrives the assigned position of off-position side, make the fixation side limiting unit (confinement block 801 that limiting section 257 is corresponding with difference, 802) butt.
If employing said structure, no matter the relation that with the rotation of a direction of output gear Gf, lid rotated from open position (position of standing up) towards off-position (horizontal level) in the rotating shaft of output gear Gf and lid is connected, or the relation that with the rotation of another direction of output gear Gf, lid is rotated from open position (position of standing up) towards off-position (horizontal level) in the rotating shaft of output gear Gf and lid is connected, all can be in the time that lid arrives the assigned position of off-position side, make the fixation side limiting unit (confinement block 801 that limiting section 257 is corresponding with difference, 802) butt, to stop the rotation of output gear Gf.Thus, making after output gear Gf turns to limiting section 257 and confinement block 801,802 butts, by sensor gear 137 is engaged with the small-diameter gear 94b of the 4th gear G4, the mode that can be associated with the assigned position of off-position side with lid is assembled the angular transducer 150 of the angle position of detecting output gear Gf.By this, can under identical conditions, set all the time the angle position of output gear Gf and angular transducer 150 detected angle position, the especially lid angle position in off-position side.
In execution mode, the assigned position of above-mentioned off-position side is the lid angle position that the angle position in level is more moved towards a lateral deviation contrary to open position side than it.
In the situation that lid is lid, the common scope of application of lid be from lid the position in level till lid in can the own vertical firmly scope of the position (position of standing up) of state, therefore, if employing said structure, outside the scope of application of the position of limiting section 257 and fixation side limiting unit (confinement block 801,802) butt in lid.Like this, in the use procedure of lid, limiting section 257 can not contact repeatedly with confinement block 801,802, therefore, can not produce impact sound using when lid, and can not be created in the situation that limiting section 257 contacts repeatedly with confinement block 801,802 and imagine the breakage.
The 4th gear G4 engaging with output gear Gf comprises: small-diameter gear 94b, and this small-diameter gear 94b engages with the 251a of tooth portion of output gear Gf; And large diameter gear 94a, this large diameter gear 94a engages with the small-diameter gear 93b of the 3rd gear G3, and large diameter gear 94a is located axially at lower casing 70 1 sides axis X a's, limiting unit 257 is set as from the 251a of tooth portion of output gear Gf extends along axis X a direction, during from the end on observation of axis X a, large diameter gear 94a periphery arrives with upper/lower positions, in angular range outside the energy slewing area of the output gear Gf of this position in being limited by confinement block 801,802, and during from end on observation and the 251a of tooth portion overlapping.
If employing said structure, the axle base of output gear Gf and the 4th gear G4 shortens, and therefore, can make the small-diameter gear 94b of the 4th gear G4 and the 251a of tooth portion of output gear Gf directly engage.In the time that the axle base of output gear Gf and the 4th gear G4 is elongated, need between output gear Gf and the 4th gear G4 (small-diameter gear 94b), sloth wheel gear be set separately, if but adopt said structure, without sloth wheel gear is set, therefore, can prevent well the maximization of housing 7.In addition, the internal diameter of surrounding wall portion 311, side wall portion 721 can be decreased to while observation from axis X a direction and diameter that the external diameter of output gear Gf is roughly the same.
In housing 7, the sensor gear 137 of angular transducer 150 is set as with the small-diameter gear 94b of the 4th gear and engages, the top and bottom of the rotating shaft of output gear Gf and the 4th gear G4 are supported by upper shell 30 and lower casing 70 respectively, sensor gear 137 is set as and runs through shell 30, and the lower end of the rotating shaft 138 of sensor gear 137 (axle 138b) supported by the supporting sleeve 56 being integrally formed with upper shell 30 together with confinement block 801,802.
If employing said structure, the lower casing 70 that output gear Gf, the 4th gear G4 are shared supports, and therefore, can further regulate exactly the position of confined output gear Gf and the relation of angular transducer 150.
Limiting section 257 has: bearing surface 257e (the first abutting part), and when output gear Gf is during towards a direction rotation, this bearing surface 257e and confinement block 801 butts; Bearing surface 257f (the second abutting part), in the time that output gear Gf rotates to another way, this bearing surface 257f and confinement block 802; And arcuation outer peripheral face 257c, this arcuation outer peripheral face 257c is connected to each other the end of the outside diameter of the end of the outside diameter of bearing surface 257e and bearing surface 257f, in the time of end on observation from axis X a, it is upper that arcuation outer peripheral face 257c is positioned at the dotted line Im3 that the periphery of the 251a of tooth portion is connected, the week around axis X a upwards from bearing surface 257e till the angular range Ra of bearing surface 257f than in the same direction from confinement block 801 till the angular range Rb of confinement block 802 is large.
If employing said structure, limiting section 257 is arranged in the position of the outermost footpath of output gear Gf side, therefore, even if in the case of having reduced to put on the power of limiting section 257, also can reduce the angular range that the 251a of tooth portion cannot be set in output gear Gf.
Output gear Gf has the 251a of tooth portion engaging with the small-diameter gear 94b of the 4th gear G4 in periphery, limiting section 257 forms with output gear Gf one, and extend towards lower casing 70 1 sides from the outer circumferential side that is provided with the 251a of tooth portion in the time of the end on observation from axis X a, on lower casing 70, the axial region of output gear Gf 255 is supported to revolvable gear support portion 79 and is located at the radially inner side of limiting section 257, and gear support portion 79 and confinement block 801, 802 are integrally formed with lower casing 70, the axial region 255 of output gear Gf, the recess 255c that engage with rotating shaft lid 256, 256c is set as towards axis X a direction opening, axial region 255, 256 and gear support portion 79 coaxially arrange.
If employing said structure, can increase the diameter of gear support portion 79 and axial region 255,256, therefore, can increase the bearing strength of gear support portion 79 to output gear Gf and the bearing strength of 255,256 pairs of lids of axial region.
On output gear Gf, be provided with spring Sp, when the lid that makes to be connected with output gear Gf around the rotation of axis X a as output gear Gf rotates from open position (position of standing up) towards off-position (horizontal level), this spring Sp be created in the direction of the opposite direction of this rotation on the active force that works, utilize this spring Sp to lid the rotary action braking force towards off-position.
If employing said structure, the rotation of the off-position side of lid becomes slowly, can further detect exactly the position of lid (toilet cover) in off-position side.By this, in the time utilizing gear motor 1 that lid is rotated, be not prone to the situation that lid exceedes off-position (horizontal level) and drive towards the rightabout of open position (position of standing up) and be about at lid the situation that while arriving off-position (horizontal level), the rotation of lid is stopped.
Train of reduction gears 5 is by the first gear G1 is installed in the housing 7 that is provided with the second gear G2 to the four gear G4 and completed from the outer set of upper shell 30 1 sides.
Stage before assembling the first gear G1, output gear Gf and DC motor 2 directly do not link together via train of reduction gears 5, therefore, when making output gear Gf in the time that axis X a turns to the angle position of limiting section 257 and confinement block 801 or confinement block 802 butts, the torque of output gear Gf rotation is diminished, therefore, easily output gear Gf is positioned.
In addition, in execution mode, motor is made as to DC motor, but is not limited thereto, can select rightly stepping motor or other motor according to controlling object.In addition, train of reduction gears 5 comprises the first gear G1 to the four gear G4 and forms Pyatyi reducing gear between the pinion 90 of DC motor 2 and output gear Gf, but is not limited thereto, and can select progression arbitrarily.
Be made as with reference to gear the 4th gear G4 engaging with output gear Gf by what engage with sensor gear 137, but also can using the 3rd gear G3 etc. more the gear of prime as with reference to gear and it is engaged with sensor gear 137.But less this aspect of accumulation backlash till from output gear Gf to sensor gear 137, the execution mode that is made as the 4th gear G4 of the final level engaging with output gear Gf with reference to gear is favourable.In addition, in execution mode, to be made as the axle 138b of fulcrum and the rotating shaft of sensor gear 137 one, the 4th bolster S4 is made as and the fixed axis of the 4th gear G4 split, in addition, also output link 200 is made as to the rotating shaft of rotating with output gear G4 one and with respect to supporting sleeve, but no matter fulcrum is rotating shaft or fixed axis, all needs only and is directly held in same member.
The substrate of angular transducer 150 151 being made as to the member of rigidity, but being not limited thereto, can be also for example flexible base, board.Toilet seat, toilet cover using execution mode as Western water closet and the driven for opening and closing gear motor that is provided with the lid of washing machine of lid etc. at upper surface are illustrated, but the present invention also can be applied to the door of refrigerator, the gear motor of other purposes.
In execution mode, exemplify the situation that before assembling the first gear G1, sensor gear 137 is engaged with the 4th gear.This is due to following reason: in the time having assembled the first gear G1, output gear Gf is directly connected via train of reduction gears 5 with DC motor 2, the limiting section 257 that is difficult to make output gear Gf turn to this output gear Gf and the transducer assembling position of confinement block 801 (or confinement block 802) butt.
But, also can make at assembling the first gear G1 after output gear Gf and DC motor 2 directly link together via train of reduction gears 5 assembling sensor gear 137.In these cases, utilizing DC motor 2 to make after output gear Gf turns to transducer assembling position, assembling sensor gear 137, thus sensor gear 137 can be assembled in to predetermined predetermined angular position.

Claims (17)

1. a gear motor, comprising:
Motor;
Output shaft;
Train of reduction gears, the output rotation of described motor is passed to described output shaft by this train of reduction gears; And
Angular transducer, this angular transducer utilization detects the rotational angle of described output shaft with the sensor gear that any gear in described train of reduction gears engages,
The lid being connected with described output shaft is rotated, so that the reciprocating motion between open position and off-position of described lid,
Described gear motor is characterised in that,
Described motor, described output shaft and described reduction gearing are mounted on the first housing and the second housing overlapping and body shell that forms in the axial direction of described output shaft,
From described motor till any gear the power transfer path of described output shaft is provided with rotating side limiting unit, this rotating side limiting unit is by limiting the energy slewing area of described output shaft with the fixation side limiting unit butt of being located at described body shell,
Described fixation side limiting unit has:
The first fixation side limiting unit, when described output shaft is in the time that its rotating shaft is rotated towards a direction, this first fixation side limiting unit and described rotating side limiting unit butt; And
The second fixation side limiting unit, when described output shaft is in the time that its rotating shaft is rotated to another way, this second fixation side limiting unit and described rotating side limiting unit butt,
Described the first fixation side limiting unit is the fixation side limiting unit relation that described output shaft and described lid make described lid rotate towards described off-position from described open position with the rotation of a described direction of described output shaft situation about linking together,
Described the second fixation side limiting unit is the fixation side limiting unit relation that described output shaft and described lid make described lid rotate towards described off-position from described open position with the rotation of described another direction of described output shaft situation about linking together,
By the set positions of described the first fixation side limiting unit and described the second fixation side limiting unit for upper/lower positions: be no matter the relation that with the rotation of a described direction of described output shaft, described lid rotated towards described off-position from described open position at described output shaft and described lid links together, or the relation that with the rotation of described another direction of described output shaft, described lid is rotated towards described off-position from described open position at described output shaft and described lid links together, all can be in the time that described lid arrives the assigned position of described off-position side, make the described rotating side limiting unit first fixation side limiting unit corresponding with difference, the second fixation side limiting unit butt.
2. gear motor as claimed in claim 1, is characterized in that,
The assigned position of described off-position side is the described lid angle position that the angle position in level is more moved towards a lateral deviation contrary to described open position side than it.
3. gear motor as claimed in claim 2, is characterized in that,
The final gear engaging with described output shaft in the gear of described train of reduction gears comprises:
Small-diameter gear, this small-diameter gear engages with described output shaft; And
Large diameter gear, this large diameter gear engages with another gear adjacent with described final gear of described train of reduction gears,
Described rotating side limiting unit is set as from the tooth portion of engaging with described small-diameter gear of described output shaft extends along the rotor shaft direction of described output shaft,
The large diameter gear of described final gear is positioned at upper/lower positions, this position is in the angular range outside the energy slewing area of the described output shaft being limited by described the first fixation side limiting unit and described the second fixation side limiting unit in the time that described rotor shaft direction is observed, and when from described rotor shaft direction observation and the described tooth portion of described output shaft overlapping.
4. gear motor as claimed in claim 3, is characterized in that,
In described body shell, the sensor gear of described angular transducer is set as with the described small-diameter gear of described final gear and engages,
The top and bottom of the rotating shaft of described output shaft and described final gear are supported by described the first housing and described the second housing respectively, the rotating shaft of described sensor gear is set as and runs through described the second housing, and the lower end of the rotating shaft of described sensor gear together with described fixation side limiting unit by the support part supports being integrally formed with described the second housing.
5. gear motor as claimed in claim 4, is characterized in that,
Described rotating side limiting unit has:
The first abutting part, in the time that described output shaft rotates towards a described direction, this first abutting part and described the first fixation side limiting unit butt;
The second abutting part, in the time that described output shaft rotates towards described another direction, this second abutting part and described the second fixation side limiting unit butt; And
Connecting portion, this connecting portion is connected to each other the end of the outside diameter of the end of the outside diameter of described the first abutting part and described the second abutting part,
In the time observing from described rotor shaft direction, the periphery of described connecting portion is consistent with the periphery of the tooth of the periphery setting of the described tooth portion along described output shaft,
Week of the described rotating shaft around described output shaft upwards from described the first abutting part till the angular range of described the second abutting part than described week upwards from described the first fixation side limiting unit till the angular range of described the second fixation side limiting unit is large.
6. gear motor as claimed in claim 4, is characterized in that,
On described output shaft, be provided with spring, in the time that the rotation of described output shaft makes described lid rotate from described open position towards described off-position, this spring be created in the direction of the opposite direction of this rotation on the active force that works,
Utilize this spring to described lid the rotary action braking force towards off-position.
7. gear motor as claimed in claim 4, is characterized in that,
By under the state of described rotating side limiting unit and described fixation side limiting unit butt, described sensor gear is engaged with the described small-diameter gear of described final gear, thereby make the angle position of described output shaft consistent with the angle position that described angular transducer detects.
8. gear motor as claimed in claim 1, is characterized in that,
Described rotating side limiting unit has:
The first abutting part, in the time that described output shaft rotates towards a described direction, this first abutting part and described the first fixation side limiting unit butt;
The second abutting part, in the time that described output shaft rotates towards described another direction, this second abutting part and described the second fixation side limiting unit butt; And
Connecting portion, this connecting portion is connected to each other the end of the outside diameter of the end of the outside diameter of described the first abutting part and described the second abutting part,
In the time observing from described rotor shaft direction, the periphery of described connecting portion is consistent with the periphery of the tooth of the periphery setting of the described tooth portion along described output shaft.
9. gear motor as claimed in claim 8, is characterized in that,
Described rotating side limiting unit and described output shaft one form, and extend towards described the first case side from the outer circumferential side of described tooth portion in the time that the rotor shaft direction from described output shaft is observed,
On described the first housing, described output shaft is supported to revolvable bearing portion and is located at the radially inner side of described rotating side limiting unit, and described bearing portion and described fixation side limiting unit and described the first housing be integrally formed,
The engaging recessed part for engaging with described lid of described output shaft is set as the rotor shaft direction opening towards described output shaft, and described holding section, described output shaft and described bearing portion coaxially arrange.
10. gear motor as claimed in claim 9, is characterized in that,
The final gear engaging with described output shaft in the gear of described train of reduction gears comprises:
Small-diameter gear, this small-diameter gear engages with described output shaft; And
Large diameter gear, this large diameter gear engages with another gear adjacent with described final gear of described train of reduction gears,
Described rotating side limiting unit is set as from the tooth portion of engaging with described small-diameter gear of described output shaft extends along the rotor shaft direction of described output shaft,
The large diameter gear of described final gear is positioned at upper/lower positions, this position is in the angular range outside the energy slewing area of the described output shaft being limited by described the first fixation side limiting unit and described the second fixation side limiting unit in the time that described rotor shaft direction is observed, and when from described rotor shaft direction observation and the described tooth portion of described output shaft overlapping.
11. gear motors as claimed in claim 10, is characterized in that,
On described output shaft, be provided with spring, in the time that the rotation of described output shaft makes described lid rotate from described open position towards described off-position, this spring be created in the direction of the opposite direction of this rotation on the active force that works,
Utilize this spring to described lid the rotary action braking force towards off-position.
12. gear motors as claimed in claim 8, is characterized in that,
Described first abutting part of described rotating side limiting unit is respectively the more court angle position that a contrary lateral deviation is moved with described open position side, the angle position in level with described second abutting part of the position of described the first fixation side limiting unit butt and described rotating side limiting unit than described lid with the position of described the second fixation side limiting unit butt.
13. gear motors as claimed in claim 12, is characterized in that,
Under state by described the first abutting part in described rotating side limiting unit and described the first fixation side limiting unit butt, described sensor gear is engaged with the described small-diameter gear of described final gear, thereby make the angle position of described output shaft consistent with the angle position that described angular transducer detects, the situation that wherein said output shaft is connected with the relation that described lid makes described lid rotate towards described off-position from described open position in the rotation of the described direction with described output shaft
And, under state by described the second abutting part in described rotating side limiting unit and described the second fixation side limiting unit butt, described sensor gear is engaged with the described small-diameter gear of described final gear, thereby make the angle position of described output shaft consistent with the angle position that described angular transducer detects, the situation that wherein said output shaft is connected with the relation that described lid makes described lid rotate towards described off-position from described open position in the rotation of described another direction with described output shaft.
14. gear motors as claimed in claim 13, is characterized in that,
On described output shaft, be provided with spring, in the time that the rotation of described output shaft makes described lid rotate from described open position towards described off-position, this spring be created in the direction of the opposite direction of this rotation on the active force that works,
Utilize this spring to described lid the rotary action braking force towards off-position.
15. gear motors as claimed in claim 1, is characterized in that,
On described output shaft, be provided with spring, in the time that the rotation of described output shaft makes described lid rotate from described open position towards described off-position, this spring be created in the direction of the opposite direction of this rotation on the active force that works,
Utilize this spring to described lid the rotary action braking force towards off-position.
16. gear motors as claimed in claim 15, is characterized in that,
The described spring that is installed on described output shaft has:
Axially holding section, extend along the rotor shaft direction of described output shaft from one end of the base portion of coiled type this axial holding section; And
Radially holding section, this radially extends towards the radial outside of described output shaft from the other end of the base portion of described coiled type holding section,
Described axial holding section engages with described output shaft, described radially holding section and the engaging groove engaging of being located at described the second housing.
17. gear motors as described in any one in claim 1 to 16, is characterized in that,
Described train of reduction gears be by by form in the gear of this train of reduction gears except with described sensor gear meshed gears a gear in outer set is loaded on the described body shell the state that is provided with other gear except this gear, complete.
CN201310495387.8A 2012-10-22 2013-10-21 Gear motor Active CN103780015B (en)

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CN103780015B (en) 2017-03-01

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