CN203589878U

CN203589878U - A clamp hoop used for retaining a plurality of coil holders on a stator

Info

Publication number: CN203589878U
Application number: CN201320159912.4U
Authority: CN
Inventors: D·考斯; P·布莱克斯勒; R·加文; D·克里特斯
Original assignee: CTS Corp
Current assignee: CTS Corp
Priority date: 2009-05-27
Filing date: 2010-05-24
Publication date: 2014-05-07
Anticipated expiration: 2020-05-24
Also published as: KR101699704B1; JP5643815B2; KR20120030449A; CN203660685U; DE112010002083A5; CN202906621U; JP2012528564A; WO2010138455A2; WO2010138455A3

Abstract

The utility model discloses a clamp hoop used for retaining a plurality of coil holders on a stator, and also discloses a brushless rotation actuator with the clamp hoop. The clamp hoop used for retaining the plurality of coil holders on the stator comprises a housing. The housing comprises a motor housing used for limiting a cavity used for a motor assembly and a cover limiting a cavity used for a gear assembly. The motor assembly comprises a rotor and the stator with the plurality of coil holders. The annular-plate-shaped clamp hoop sits on the coil holders, and retains the coil holders on the stator. Finger-shaped objects forming on the annular plate are matched with corresponding seams defined by the coil holders. A circuit board is positioned inside the housing, and relies against an inner crossette of the motor housing. A plate is positioned inside the housing and relies on the circumference of the motor housing. The plate is positioned on the circuit board and separated from the circuit board.

Description

It is a kind of for multiple coil holders are remained on to the clamp on stator

The application is that denomination of invention is " a kind of actuator and actuator ", the applying date to be the divisional application of May 24, application number in 2010 Chinese patent application that is 201090000921.3.

related application

The application is that on September 1st, 2009 submits to, exercise question is the continuation part application of the sequence number of " brushless direct current actuator " United States Patent (USP) that is 12/584,161, and requires the rights and interests of its applying date and disclosure.

It is 61/217 that the application also requires the sequence number that on May 27th, 2009 submits to, the sequence number that 100 U.S. Provisional Patent Application and on June 30th, 2009 submit to is 61/269, the applying date of 834 U.S. Provisional Patent Application and disclosure, all these patents are all the same with all documents cited herein to be clearly herein incorporated by reference.

technical field

The utility model generally relates to actuator, particularly relates to a kind of rotation brushless direct current actuator that keeps clamp with coil holder.

background technology

The example of an existing actuator is the United States Patent (USP) 5 of " Polyphase Motor Particularly for Driving an Indicator Needle " at exercise question, 880, shown in 551, this patent has been announced the polyphase machine of a stationary parts that comprises magnetized rotor and driven by conductive coil.This rotor have N to, more precisely, 4 or 5 pairs of radial magnetized utmost points on alternating direction.Stationary parts comprises at least two W type circuit, and each circuit contains a conductive coil that is wound around centre strut.W type circuit is configured to when one of them centre strut is during in magnetic transition reverse state, and another centre strut is roughly contrary with magnetic pole.The pole shoe relevant to the centre strut of two W type circuit can be separated by hexagonal angle distribute.

Motor comprises two critical pieces, i.e. rotor and stator, and wherein stator includes one or more coil holders that are installed on it, and due to tolerance stack, allows coil holder to move on stator.In some applications, coil holder comprises the terminal that coil holder is connected to the pin on printed circuit board (PCB).But due to vibration, the movement of coil holder can cause loose contact between coil holder terminal and printed circuit board (PCB), and lose thus electrical connection.Coil holder is molded on stator, for guaranteeing that coil holder is fixed on stator.But this method has been proved suitable costliness and may have caused damage to the wire on coil holder.

The utility model proposes a kind of new actuator structure and clamp structure for the stator at actuator motor assembly by coil holder lock-bit.

Utility model content

The utility model generally relates to actuator, and this actuator comprises housing, and this housing comprises the first and second housing parts, and these two parts limit respectively the first and second chambeies; Electric machine assembly, is arranged in the first chamber in the first housing parts and comprises armature spindle; Circuit board assemblies, is positioned at housing, and is covered on electric machine assembly, and the armature spindle of electric machine assembly extends through circuit board assemblies and enters in the second chamber; Gear assembly, the second chamber that it is positioned at the second housing parts, is covered on circuit board assemblies, and wherein at least a portion and the armature spindle coupling of electric machine assembly; And output shaft, this output shaft extends in the second chamber being limited by the second housing parts, and is coupled with gear assembly.

In one embodiment, gear assembly comprises at least the first gear in the second chamber, and this gear is supported by the axle in the second chamber, and is coupled with armature spindle.The second gear is positioned at the second chamber and is stacked on the first gear.Output shaft and the second gears.

In one embodiment, housing parts comprises interior all convex shoulders, and circuit board assemblies comprises neighboring.The neighboring seating of this circuit board assemblies is in this internal shoulder of the first housing parts.The first housing parts also comprises circumferential groove, and the second housing parts limits the circumference tongue matching with this groove of the first housing parts.Circuit board assemblies the first and second chambeies separately.The first housing parts also limits top periphery, and actuator also comprises the plate in housing, and this plate seating is in this top periphery of the first housing parts, and is positioned on circuit board assemblies and interval parallel with it.

The utility model also relates to plate or the clamp of the motion of the coil holder of the stator module of the constraint electric machine assembly in housing.This clamp comprises that seating is in the annular slab of stator and multiple coil holders.In one embodiment, annular slab is ripple type, and limits the multiple bending areas that are covered on multiple coil holders respectively.Clamp also comprises the aligning finger piece of multiple separation, and these aligning finger pieces stretch out from the outer surface of annular slab, and are suitable for coordinating with the corresponding seam being limited on corresponding coil holder; And limiting multiple the first through holes onboard, these through holes are suitable for receiving corresponding screw so that annular slab is fixed to stator.Each bending area of this annular slab limits each the boss laying respectively in multiple coil holders.

Other advantage of the present utility model and feature are more apparent in next to the detailed description of preferred embodiment of the present utility model, accompanying drawing and claims.

Accompanying drawing explanation

By the description to accompanying drawing below, these and other feature of the present utility model can better be understood:

Fig. 1 is the top perspective according to actuator of the present utility model;

Fig. 2 is the bottom perspective view of actuator in Fig. 1;

Fig. 3 is the decomposition diagram of actuator shown in Fig. 1 and Fig. 2;

Fig. 4 is the actuator sectional elevation enlarged drawing along 4-4 line direction in Fig. 2;

Fig. 5 is, according to the top perspective enlarged drawing of the coil holder retainer on stator and the coil holder that is arranged on the motor that is arranged in the actuator casing shown in Fig. 1 to Fig. 4 of the present utility model;

Fig. 6 is the perspective enlarged drawing of coil holder retainer in the utility model;

Fig. 7 is the top plan enlarged drawing of the coil holder retainer shown in Fig. 6;

Fig. 8 is coil holder retainer along the sectional elevation enlarged drawing of the 8-8 line in Fig. 7;

Fig. 9 is the section enlarged detail of the retainer of coil holder shown in Fig. 8 region A; With

Figure 10 is the section enlarged detail of the retainer of coil holder shown in Fig. 8 region B.

Embodiment

Fig. 1 to Fig. 4 shows one according to the embodiment of compact brushless direct-current of the present utility model (BLDC) revolving actuator 10.Actuator 10 comprises housing 20(Fig. 1,2 and 3), electric machine assembly 98(Fig. 3), sensor cluster 180(Fig. 3) and gear assembly 220(Fig. 3).Actuator 10 can be widely used in comprising mobile valve, switch, and indicating device and any other need accurately to control the application rotatablely moving.

Housing 20 has two parts: electric machine assembly housing parts 21(Fig. 1,2,3,4 and 5) and gear housing parts or lid 50(Fig. 1,2,3 and 4).

Electric machine casing part 21(Fig. 3 and 4) comprise roughly vertical circumference sidewall 25(Fig. 3 and 4) and surface or wall 27(Fig. 4 of approximate horizontal), the two has defined central interior cavity 22(Figure 4 and 5 together).Cylindrical groove or groove 29(Fig. 4) from the bottom center portion of cavity 22, extend into the inside of wall 27.

A pair of biasing groove or shoulder 31 and 32(Fig. 3,4 and 5 extending around circumference) be formed on the outer surface of cupular part of the end periphery of the sidewall 25 of electric machine casing part 21.Convex shoulder 33(Fig. 4) be limited at the top inner surface of the end periphery of the sidewall 25 of electric machine casing part 21.

Beam-line components 34(Fig. 3) be coupled with electric machine assembly housing parts 21.Beam-line components 34 comprises multiple roughly L-types, elongated metal connecting terminal 80(Fig. 3), this terminal is from wire harness bracket 82(Fig. 3) stretch out by perforation 81(Fig. 1), perforation 81 is limited in the wall 27 of electric machine casing 21 and extends into wherein, then enters in its inner chamber 22.Bracket 82 is suitable for being fixed to electric machine casing part 21 by each attachment screw 83.Sealing ring 84(Fig. 3) be placed between the outer surface of wall 27 of bracket 82 and housing parts 21.Wire harness assembly 34 is powered and ground connection and control signal is provided to actuator 10.

Gear housing parts or lid 50(Fig. 1 to Fig. 4) comprise periphery upright side walls 51(Fig. 1 to Fig. 4) and top horizontal wall 53(Fig. 2 to Fig. 4), the two has defined a central interior gear cavity 52(Fig. 4 together).Groove or groove 61(Fig. 4) from the bottom in chamber 52, extend internally and enter the inner surface of top horizontal wall 53.Top horizontal wall 53 has also defined a cylindrical hole 58(Fig. 2 and Fig. 4), this through hole 58 extends between the inside and outside surface of top horizontal wall, and is connected with internal gear housing chamber 52.

In the embodiment shown, hold-down arm or bracket 55(Fig. 1 to Fig. 4) from each angle extension of lid 50, more precisely, from the angle extension of its wall 27, and defined a central hole 56(Fig. 1 and 2).Securing member, such as screw or bolt 57(Fig. 3), extend through each bracket perforation 56 and screw on the coupling screw thread (not shown) of the object that brushless direct-current revolving actuator 10 is attached to, for example, this object can be framework, chassis, bracket, engine or manifold.

The vertical side surface 51 of lid 50 also comprise contain end tongue 59(Fig. 4) the terminal edge around circumference, when electric machine casing part 21 and lid 50 are coupled, this end tongue 59 matches to merge with the shoulder 31 of electric machine casing part 21 and connects with it.Sealing ring 60(Fig. 3 and 4) on the shoulder 32 of electric machine casing part 21 and the sealing between housing parts 21 and lid 50 is provided, more precisely, can provide the sealing between sidewall 25 outer surfaces of electric machine casing part 21 and sidewall 51 inner surfaces of lid 50.

Actuator 10 also comprises electric machine assembly 98(Fig. 3), this electric machine assembly generally comprises rotor assembly 100 (Fig. 3 and 4) and stator module 150(Fig. 3,4 and 5).

Rotor assembly 100 is positioned at and is arranged on the chamber 22 of electric machine casing 21, and comprise bar (yoke) 102(Fig. 3 and Fig. 4), this bar has circular circle segment 103(Fig. 3 to Fig. 4) and cylindrical center pinion or post or axle 104(Fig. 3 to Fig. 4).Roughly vertical periphery is inner separates and parallel wall 108 and 109(Fig. 4 by each for circle segment 103) and approximate horizontal top peripheral wall or shoulder 107(Fig. 4 radially) limits, the top of this wall or shoulder 107 and wall 108 and 109 is integrated.Wall 108 defines inner circumferential seam 106(Fig. 4 together with 109).

Motor gear 222(Fig. 3 and 4) be formed on the outer surface on armature spindle 104 tops.Axle 104 bottoms are arranged in the groove 29 that is limited to electric machine casing 21 bottoms.Bearing 113(Fig. 3 and 4) be press fit in groove 29 and the end of back shaft 104 to be rotated with respect to electric machine casing 21.Thrust washer 115(Fig. 3 and 4) be centered around axle 104 bottoms and seating interior shoulder 117(Fig. 4 in motor casing body wall 27), this thrust washer also round groove 29 with support and keep armature spindle 104, thereby make rotor assembly 100 vertical in the interior maintenance in the chamber 22 of electric machine casing 21.Cylindrical electrical machine magnet 110(Fig. 3 and 4) round the bottom circumference outer rim of surrounding wall 109, extend, and according to subregion south poles alternating magnetization.Sensor magnet 114(Fig. 3 and 4 of general toroidal) be positioned on the outer surface of cupular part of surrounding wall 107, and according to subregion south poles alternating

magnetization.Magnet

110 and 114 can be formed by neodymium iron boron, and magnetizes through appropriate magnetizing assembly.

Stator module 150(Fig. 3 and 4) be also installed in the chamber 22 of electric machine casing part 21 bottoms, around rotor assembly 100 and be spaced from.Stator module 150 comprises several steel lamination 152(Fig. 3 and 4), coil holder 154(Fig. 3 and 4) and winding 156(Fig. 3,4 and 5), and defined centre bore 172(Figure 4 and 5).Lamination 152 normally annular.Multiple laminations can be stacked up and form stator module 150.Rotor assembly 100 extends through central stator hole 172.Copper cash winding 156 is wrapped on each plastics coil holder 154.156 definition of each wire-wound group are electrically connected to

stator terminal

160a and 160b(Fig. 3 and Fig. 5) end.

The further details of the rotor of the disclosed type of the application and the structure of stator module and operation is open in following one or more United States Patent (USP)s and patent announcement, and its description is incorporated herein by reference.

U.S. Patent number is 5,880,551, and exercise question is " Polyphase Motor Particularly for Driving an Indicator Needle "; U.S. Patent number is 7,304,450, exercise question is that " Motor-Reduction Unit Switched on an Absolute Position Sinal " and U.S. Patent number are 7,466,092, exercise question is " Polyphase Motor ", and above full content is incorporated herein by reference.

Coil holder retainer or clamp 310(Fig. 3, Fig. 4 and Fig. 5 to Figure 10) coil holder 154 is remained on stator module 150, and be described in more detail below.

Fig. 5 shows an embodiment according to coil holder retainer of the present utility model or clamp 310, and this coil holder retainer or clamp are fixed to the top of stator module 150, and this stator module 150 is arranged in the chamber 22 of electric machine casing part 21.

Stator module 150 shown in embodiment is generally annular, comprises three coil holder 154a, the 154b and the 154c that are fixed to the upper.Although do not show in any figure, hold and be intelligiblely, stator module 150 defines finger piece (not shown) separately and each

coil holder

154a, 154b and 154c and has defined a centre bore, and this centre bore allows each

coil holder

154a, 154b and 154c to slide on stator finger piece separately with a kind of similar fashion of sliding on finger with ring and be assembled on it.

Each coil holder 154a, 154b comprise pair of separated and

parallel terminal

160a and 160b(Fig. 3,4 and 5 with 154c), this is to terminal generally from the top surface of each

coil holder

154a, 154b and 154c straight up and stretch out.Each

coil holder

154a, 154b and 154c have defined an elongated vertical seam 326(Fig. 5 between its each

terminal

160a and 160b).

The terminal 160a of each

coil holder

154a, 154b and 154c and 160b are applicable to Fig. 4 with printed circuit board (PCB) 200() be coupled, this printed circuit board (PCB) is positioned at and is arranged on stator module 150, more specifically,

terminal

160a and 160b are applicable to and printed circuit board (PCB) 200(Fig. 3 and 4) on slot (not shown) realize be electrically connected.

Due to

terminals

160a and 160b must and printed circuit board (PCB) 200 keep continuing electrical connection, be therefore necessary to make that

coil holder

154a, 154b and 154c's is mobile minimum.But, because

coil holder

154a, 154b and 154c are the elements separate with stator module 150, unless be therefore fixed,

coil holder

154a, 154b and 154c can produce the motion with respect to stator module 150, for example, in response to the vibration of housing 20, move.As described in detail below, the coil holder retainer 310 in the utility model can make such motion and the loss that electrically contacts that causes drops to minimum.

Coil holder retainer or clamp 310 comprise annular slab 324(Fig. 5 to Figure 10 that a plain film by metal or similar rigid material or band form), this annular slab comprises relative upper and lower surperficial 327 and 328(Fig. 5 to Figure 10), outside is vertical surface or face 330(Fig. 5 to Fig. 9 extending around periphery roughly) and inner roughly vertical annular inner surface or face 332(Fig. 5 to Figure 10 around periphery extension).

Retainer 310, more particularly its annular slab 324, comprise that three keep aiming at finger piece 336,338 and 340(Fig. 3,5,6,7,8 and 9) from exterior annular face 330, in the mode that is approximately perpendicular to ring surface 330, outwards give prominence to, and roughly coplanar with face 327 and 328.In the embodiment shown, finger piece 336,338 and 340 each intervals and the circumference along annular slab 324 extend with 120 degree angular spacings.

Annular slab 324 also limits hole or through hole 342,344 and 346(Fig. 5,6 and 7 of first group of circular) and hole or through hole 348,350 and 352(Fig. 5,6 and 7 of second group of circular), these holes or through hole extend and protrude the

face

327 and 328 through annular slab 324.

First group of through hole 342,344 and 346 defines stator aligned through holes as described in more detail below.Second group of through hole 348,350 and 352 defines retainer installation through hole as described in more detail below.

Through

hole

342 and 348 is positioned on annular slab 324, and in the mode of separation and conllinear, is positioned at the position of approximate centre between

finger piece

336 and 338, and wherein, through hole 342 is adjacent to finger piece 336, and through hole 348 is adjacent to finger 338; Through

hole

344 and 350 is positioned on annular slab 324, and in the mode of separation and conllinear, is positioned at the position of approximate centre between

finger piece

338 and 340, and wherein, through hole 344 is adjacent to finger piece 338, and through hole 350 is adjacent to finger piece 340; Through

hole

346 and 352 is positioned on annular slab 324, and in the mode of separation and conllinear, is positioned at the position of approximate centre between

finger piece

340 and 336, and wherein, through hole 346 is adjacent to finger 340, and through hole 352 is adjacent to finger 336.

In the embodiment shown, through hole 342,344 and 346 all has identical diameter, and through hole 348,350 and 352 all has identical diameter, but through

hole

342,, 344 and 346 diameter is more slightly bigger than the diameter of through hole 348,350 and 352.In one embodiment, each through hole 348,350 and 352 may have some stretchings or prolongation.

Retainer 310, and more particularly its annular slab 324, also comprise three elongated otch 354,356 and 358(Fig. 5,6 and 7), these otch are forming and extend to wherein on the internal spherical surface 332 in relative region respectively with each finger piece 336,338 and 340.

As shown in Figures 2 and 4, retainer 310, and more particularly its annular slab 324 is bending, and moulding in manufacture process in a certain way, wherein annular slab limits first group of curve regions 360,362 and 364(Fig. 6 and 7) and second group curve regions 366,368 and 370(Fig. 6 and 7 contrary with curve regions 360,362 and 364 bending directions).First group of curve regions 360,362 and 364 is each defined on the position that annular slab 324 comprises finger piece 336,338 and 340.Second group of curve regions 366,368 and 370 is limited on annular slab, roughly lays respectively at through

hole

342 and 348; 344 and 350; Also have between 346 and 352.

In Fig. 6,7 and 8 direction, the surface 327 of annular slab 324 is top surfaces of annular slab 324, bending area 360,362 and 364 limits each convex region, bending area 366,368 and 370 limits each concave shape regions, and the two has formed together and has the curved annular slab 324 of continuous dipping and heaving.

As shown in Fig. 8 and 9, each bending area 360,362 and 364 has also defined a pit or depression or boss 365(Fig. 5,6,7 and 8), horizontal expansion between its outer surface 330 at annular slab 324 and inner surface 332, its direction is approximately perpendicular to respectively the camber line in region 360,362 and 364.

As shown in Fig. 8 and 9, annular slab 324 also comprises many ear shape portions or projection 372,374 and 376(Fig. 5,6,7 and 8), these projections 372,374 and 376 are formed on the annular surface 327 that adjoins inner annular vertical plane 332, and outwards outstanding from it.On projection 372 surfaces 327 that are formed between through

hole

346 and 352, and therefore also between

finger piece

336 and 340; On projection 374 surfaces 327 that are formed between through

hole

342 and 348, and therefore also between

finger piece

336 and 338; On projection 376 surfaces 327 that are formed between through

hole

344 and 350, and therefore also between

finger piece

338 and 340.

As shown in Figure 5, according to the utility model, retainer 310 is positioned at the top of stator module 150, and wherein surface 328 seatings of annular slab 324 are in the top of stator module 150; Its each retainer finger piece 336,338 and 340 and each coil holder 154a, 154b and the respective terminal 160a of 154c and the seam of 160b 336 aim at and position in the inner; Each bending annular section 360,362 and 364 is on the top of each

coil holder

154a, 154b and 154c; Each boss 365 seatings are in the top of

corresponding coil holder

154a, 154b and 154c; And each installation through hole 348,350 and 352 is aimed at corresponding through hole (not shown) in stator 150.

Although not shown in the diagram, be understandable that, be formed on each stator aligned through holes 342,344 and 346 in annular slab 324 and define in assembling process passage or the entrance from wherein inserting for stator alignment pin (not shown), thereby as in prior art, aim at stator.Once the stator module 150 in housing 20 is suitably aimed at, each stator mounting screw 380,382 and 384(Fig. 3 and 5) just through each on annular slab 324, each through hole (not shown) on through hole 348,350 and 352 and stator module 150 is installed so that stator module 150 is fixed to housing 20, and make the top of retainer 310 against stator module 150.

More specifically, when tightening mounting screw 380,382 and 384, annular slab 324, and its each sweep 360,362 and 364 more specifically, can be to each coil holder 154a, the top of 154b and 154c apply one press elastic force fixing, lock-bit (capture) and minimize coil holder 154a, relative motion between 154b and 154c and stator 150, thus any

coil holder terminal

160a and 160b and the loose contact between slot (not shown) that contacts in the printed circuit board (PCB) 200 being extended through by

terminal

160a and 160b stoped.

According to the utility model, the boss or the depression 365 that are formed in each bending area 360,362 and 364 limit respectively seating in coil holder 154a, the flat surfaces at the top of 154b and 154c, this can prevent that any sharp edge edge or burr on annular slab 324 from destroying around coil holder 154a, the insulating properties of the wire on 154b and 154c.Otch 354,356 and 358 on annular slab 324 can be each coil holder 154a, between the front-side frame of 154b and 154c and the inner surface 332 of annular slab 324, provides clearance.Ear shape portion 372,374 and 376 has taked anti-nested structure, and this can make in manufacture process, more easily to separate each annular slab 324, and can guarantee that each assembling only installs a retainer 310.

Sensor cluster 180(Fig. 3) comprise rotor sensor magnet 114(Fig. 3 and 4) and at least one hall effect sensor 210(Fig. 4), this hall effect sensor 210 is arranged on the general planar printed circuit board (PCB) 200(Fig. 3 and 4 being installed in housing 20) downside, and downwards hang.

Printed circuit board (PCB) 200 limits neighboring 200A(Fig. 3 and 4), this neighboring is positioned on the internal shoulder 33 of wall 25 of electric machine casing part 21, and along its profile.Circuit board 200 covers and is positioned on motor casing body cavity 22, and rotor assembly 100 and stator module 150 are positioned at chamber 22 thus.Circuit board 200 has top side or surperficial 201(Fig. 3 and 4); Bottom side or surperficial 202(Fig. 4); Limit centre bore 203(Fig. 4); Through hole 205(Fig. 4 with multiple platings).In the embodiment shown, the upper end of the axle 104 of rotor 100 comprises and extends through central plate perforation 203 and enter the gear 222 in the chamber 52 being limited by lid 50.

Comprise processor or controller (not shown) and other passive and active electronic component 208(Fig. 3 and 4) multiple electronic units be arranged on the top side 201 of circuit board 200.Hall effect sensor 210 is arranged on the bottom side 202 of circuit board 200.Hall effect sensor 210 is responded to the magnetic field being produced by rotor sensor magnet 114.

Stator terminal

160a and 160b(Fig. 3 and 4) from stator module 150, outwards and upwards extend, insert in plating metal ventilating hole 205 chosen in the circuit board 200 on stator module 150, and be held in place by interference fit, welding or other similar mode.

Although all not shown in any figure, but be appreciated that, electric machine casing 21(Fig. 3) in splicing ear 80 also can similarly insert in the through hole 205 of plating chosen in circuit board 200, and be held in place by interference fit, welding or other similar mode.

As shown in Fig. 3 further, each hole that multiple screws 206 extend through in circuit board 200 and housing 21 is fixed on the internal shoulder 33 of wall 25 of electric machine casing part 21 with assurance circuit board 200.

As shown in Figures 3 and 4, actuator 10 also comprises the intermediate plate 212 that is positioned at equally housing 20, and this intermediate plate comprises that seating is in the neighboring 213 of the apical margin of the wall 25 of electric machine casing 21, and it is positioned on circuit board 200 and separation and parallel with it.Plate 212 comprises top surface 211 and basal surface 214.Top surface 213 defines at least the first and second grooves or

groove

215 and 216 and central through hole 217.The end of the armature spindle 104 of formative gear 222 extends through hole 217 and enters into gear hub body cavity 52.

Bearing 218 is press fitted in perforation 217, and support rotor axle 104 is to rotate with respect to plate 212.Thrust washer 219 is around the end of the rotor 104 with gear 222, and the shoulder of seating in the basal surface 214 that is formed on plate 212 is to support and to maintain the support with respect to housing parts 21 and plate 212 of rotor assembly 100 in required vertical orientation and housing 20.

Gear assembly 220(Fig. 3 and 4) be arranged on the plate 212 in chamber 52 of lid 50.Gear assembly 220 comprises around the gear 222 of armature spindle 104 top end and stacking gear thereupon; Middle all gear 224, complete little gear 226 and full output gear 228(Fig. 3 and 4).Gear 222,224,226 and 228 can be made of plastics.In the embodiment shown, at least a portion of gear assembly 220 is positioned on electric machine assembly 98.

As previously described, gear 222 is formed on the top end of armature spindle 104.Gear 222 is coupled and drives idler gear 224, idler gear 224 and roughly copline adjacent with motor gear 222, and be positioned at least a portion electric machine assembly 98.Pinion 226 approximate centre ground be positioned on idler gear 224 and with its coupling.Pinion 226 driver output gears 228, output gear 228 and roughly copline adjacent with pinion, and be stacked on idler gear 224, and be positioned at least a portion electric machine assembly 98.Idler gear 224 limits a central interior through hole 225(Fig. 4 together with pinion 226).

Metal intermediate gear shaft 236(Fig. 3 and 4) extend through each hole being limited in gear 224 and 226.The top of axle 236 is press fit in the groove 61 that is limited to lid 50 inner surfaces, and the bottom of axle 236 is press fit in the groove 215 that is limited to plate 212.Pair of bearings 248(Fig. 3 and 4) be press fit in hole 225, one in a pair of thrust washer 249 is clipped between plate 212 and the basal surface of gear 224, another is clipped between the inner surface of lid 50 and the upper surface of pinion 226, pair of bearings 248 and a pair of thrust washer 249 back shafts 236,

gear

224 and 226 can be used for rotating relative to plate 212 and lid 50 like this.In embodiment, intermediate gear shaft 236 is separated by with armature spindle 104 and is parallel as shown.

Output gear 228(Fig. 3 and 4) limit central cylindrical through hole or opening 230(Fig. 4), in order to receive output shaft 240(Fig. 3 and 4) core.

The top of output shaft 240 is through being formed at the cylindrical hole 58 in lid 50 and protruding, and limits a female groove of top spline or groove in order to receive the valve being coupled with actuator 10, switch, the male end of the axle of indicating device or other similar device.The bottom of output shaft 240 extends in the groove 216 being limited in plate 212.First output shaft bearing 244(Fig. 3 and 4) be press fit in the through hole 58 of lid 50, second output shaft bearing 245(Fig. 3 and 4) be press fit into plate 212(Fig. 3 and 4) groove 216 in, the two is in order to support output shaft 240 and gear 228 to rotatablely move with respect to lid 50 and plate 212.A pair of

thrust washer

246 and 247 is also with respect to lid 50 and plate 212 back shafts 240 and gear 228.Packing ring 246 is clipped between the top surface of gear 228 and the inner surface of lid 50, and meanwhile, packing ring 247 is clipped between the basal surface and plate 212 of gear 228.

Rubber output sealing ring 242(Fig. 3 and 4) region between the inner cylindrical wall of lid 50 of sealing output shaft 240 and limited hole 58.Output shaft 240 tops pass through hole 58, the object coupling that can accurately or accurately move with needs, for example, valve.Shown in Fig. 1 to Fig. 4 actuator 10 embodiment in, output shaft 240 is positioned at electric machine assembly 98, on circuit board 200 and plate 212, is separated by and parallel with armature spindle 104 with idler gear 236.

In operation, hall effect sensor 210 is responded to by sensor magnet 114(Fig. 3 and 4) magnetic field that produces, and provide and represent the signal of rotor assembly 100 positions to processor (not shown).Processor modulation, conversion or switch the sense of current of the wire-wound group 156 of flowing through, like this, each relative cylinder can appropriate opportunity switch to become the N utmost point or the S utmost point, attract whereby or repel motor magnet 100, finally make rotor assembly 100 rotate.The rotary drive motor gear 222 of rotor assembly 100, motor gear 222 drives idler gear 224 and pinion 226, idler gear 224 and pinion 226 driver output gears 228 and output shaft 240.Processor can determine and control the position of rotation of output shaft 240 whereby accurately.

With reference to above-described embodiment, describe the utility model, it should be appreciated by those skilled in the art that the variation that can do to above embodiment various forms and details in the situation that not deviating from spirit and scope of the present utility model.All aspects of described embodiment should be considered to example but not be determinate.Therefore scope of the present utility model is defined by the following claims but not aforementioned specification.All changes that are equal in intention and scope that fall into claim are all included within the scope of it.

Claims

1. for multiple coil holders are remained on to the clamp on stator, it comprises:

Multiple coil holders and seating are in the annular slab of stator, and this annular slab is undulatory, limit respectively the multiple curve regions that are covered on multiple coil holders;

From the aligning finger piece of the outward extending multiple separation of outer surface of annular slab, it is suitable for matching with the corresponding seam being limited on corresponding coil holder; With

Be limited to multiple the first through holes in plate, it is suitable for receiving corresponding screw so that annular slab is fixed to stator.

2. clamp according to claim 1, is characterized in that each curve regions of this annular slab limits a boss, and this boss is correspondingly positioned in each in multiple coil holders.