CN104079105A

CN104079105A - Outer cover structure of motor

Info

Publication number: CN104079105A
Application number: CN201410105557.1A
Authority: CN
Inventors: 横江悟; 原哲彦
Original assignee: Nidec Sankyo Corp
Current assignee: Nidec Sankyo Corp
Priority date: 2013-03-28
Filing date: 2014-03-20
Publication date: 2014-10-01
Anticipated expiration: 2034-03-20
Also published as: JP2014190494A; CN104079105B; JP6059579B2

Abstract

The invention discloses an outer cover structure of a motor capable of preventing the water from entering the inside. In the motor M, the coil terminal 56 passes through the opening part 92a in the outer cover part 90, and is extended outwards, and is connected with the connector terminal 61 in the peripheral wall part of the opening part, and the cap 96 can be used to seal the opening 930. The outer cover structure of the motor comprises the upper wall part 951 of the upper edge 92a1 of the opening part 92a, the side wall parts 952,952 extended downwards along two ends of the upper wall part, and the peripheral wall part of the sealed opening part 92a formed by the terminal supporting part 940 connected between the lower parts of the side walls. The outer periphery of the side wall parts is provided with step part 954 used for abutting against the abutting part 981 of the embedded wall part 98. The position of the steps can be deviated from the outer periphery 953 of the side wall part on the embedded direction of the side wall part with respect to the cap 96.

Description

The cover structure of motor

Technical field

The present invention relates to a kind of cover structure of motor.

Background technology

Patent documentation 1 discloses a kind of valve with electrically motorized operation that valve body is driven by motor.

Patent documentation 1: TOHKEMY 2008-292003 communique

In this valve with electrically motorized operation, the rotor of motor is set as and can rotates in having the housing of bottom tube-like.The surrounding wall portion of the periphery of the encirclement rotor in housing is sheathed and stator department is installed, and at the radial outside of rotor, disposes stator department.Stator department has the lead terminal extending towards radial outside, and this lead terminal is outstanding towards radial outside from the periphery of covering stator portion and the main body outer cover of upper surface, and is connected with connector portion in the outside of main body outer cover.

At this, in the periphery of main body outer cover, be assembled with for the protection of the connector outer cover of connector portion that is exposed to the outside of this main body outer cover, the periphery of connector portion and upper surface are connected device outer cover and cover.

In the valve with electrically motorized operation of patent documentation 1, be make connector outer cover simply with the structure of main body outer cover engaging, when moisture etc. is attached to main body outer cover, moisture likely infiltrates the inner side of connector outer cover by the assembled part of connector outer cover and main body outer cover.

Summary of the invention

Therefore, require a kind of technology preventing in moisture infiltration connector outer cover.

The cover structure of motor of the present invention, described motor drives for making to open and close the valve body of valve gear of the stream of fluid, in described motor, there is the stator arrangement of drive coil in the main body outer cover of the first surrounding wall portion with the periphery that covers described stator, the coil terminals that is connected with the end of described drive coil extends towards radial outside through the peristome that is arranged at described the first surrounding wall portion from described stator, and in surrounding the first surrounding wall portion of described peristome with connector end sub-connection, utilize packaged unit to seal the described peristome of described the first surrounding wall portion, described packaged unit has the outer chimeric wall portion that is embedded in described the first surrounding wall portion, the cover structure of described motor is as follows: the stage portion that is provided with the end butt that makes described chimeric wall portion in the periphery of described the first surrounding wall portion, the position that the position of described stage portion is departed from the terminal part of described the first surrounding wall portion in described chimeric wall portion in the chimeric direction with respect to described the first surrounding wall portion.

According to the present invention, due to the position of the stage portion of the terminal part butt with chimeric wall portion and chimeric wall portion the position of terminal part of the first surrounding wall portion of outer embedding in chimeric wall portion, in the chimeric direction with respect to the first surrounding wall portion, depart from, even therefore moisture from the end of chimeric wall portion with the bearing surface of stage portion towards the infiltration of the inner side of the first surrounding wall portion, if the moisture infiltrating is not by moving towards chimeric direction between the first surrounding wall portion and chimeric wall portion, moisture also cannot infiltrate in the first surrounding wall portion.Thus, without the seal members such as O type circle are set in addition, just can prevent that moisture from infiltrating in the first surrounding wall portion (main body outer cover).

Accompanying drawing explanation

Fig. 1 is the cutaway view of the related valve drive of execution mode.

Fig. 2 is the X-X cutaway view in Fig. 1.

Fig. 3 is the stereogram that decomposes the major part that valve drive is shown.

Fig. 4 is the figure of the connector sheath portion of the upper outer cover part of explanation.

Fig. 5 is the figure of the upper outer cover part of explanation.

Fig. 6 is the figure of the connector sheath portion of the upper outer cover part of explanation.

Fig. 7 is the figure of explanation connector portion.

Fig. 8 is the figure of the cap of explanation connector sheath portion.

Fig. 9 is stereogram and the major part cutaway view of connector sheath portion.

Figure 10 is the stereogram that decomposes the motor-side that valve drive is shown.

Figure 11 is the stereogram that decomposes the valve portion that valve drive is shown.

Figure 12 is the figure of the action of explanation valve drive.

(symbol description)

1 valve drive;

2 fluid ingress pipes;

3,4 fluid delivery lines;

40 stator modules;

50A stator pack;

50B stator pack;

51,52 inner-stator iron cores;

54 drive coils

55 terminal maintaining parts;

56 coil terminals;

59 external stator cores;

60 printed base plates (substrate);

61 bonder terminals;

Outer cover part on 90;

91 sheath portion;

92 surrounding wall portion (the first surrounding wall portion);

92a peristome;

93 connector sheath portion;

94 connector portions;

95 accommodation sections;

96 caps;

97 wall portions;

98 chimeric wall portions;

940 terminal supporting (support unit);

940a inclined plane;

940b bearing-surface;

940c lateral margin;

941 surrounding wall portion (the second surrounding wall portion);

942 side wall portions;

943 outside wall portions;

943a upper end;

944 inner wall parts;

945 tie-beams;

945a inclined plane;

955 inner side chimeric wall portions;

990 outside chimeric wall portions.

Embodiment

Below, the situation of the valve drive (gear unit) that applies the present invention to valve gear that the refrigerant flow path of refrigerator is opened and closed of take is example, suitably with reference to accompanying drawing, embodiments of the present invention is elaborated.In addition, in each accompanying drawing, identical part is marked identical symbol and omits repeat specification.In the following description, the above and below of take in the valve drive 1 shown in Fig. 1 is benchmark, suitably the position relationship of each inscape of valve drive is described.

Fig. 1 is the cutaway view of the related valve drive of execution mode 1.Fig. 2 is the X-X cutaway view in Fig. 1.Fig. 3 is the exploded view of the motor M side of valve drive 1.In addition, in Fig. 3, with shade, the part being formed by resin in stator module 40 is shown.

As shown in Figure 1 to Figure 3, the related valve drive 1 of embodiments of the present invention is following valve gear: and as the refrigerator (not shown) of external device (ED) between form the stream can make fluid (being cold-producing medium at this) circulation, fluid is directed in the S of fluid chamber via fluid ingress pipe 2 from refrigerator, and exports to refrigerator via fluid delivery line 3,4.In this valve drive 1, by motor M, valve portion 70 is driven, the fluid being directed in the S of fluid chamber is derived from fluid delivery line 3,4 to refrigerator side, as the motor M of this valve drive 1, adopted rotor 30 axially on alignment arrangements have a pair of stator pack 50A, 50B(A phase coil and B phase coil) Lundell stepper motor.

In valve drive 1, by being fixed on the partition that has round-ended cylinder shape 20 of the upper surface of base plate 10, between base plate 10 and partition 20, be formed with the S of fluid chamber.In valve drive 1, partition 20 is set as bottom 20a towards the top of a side contrary with base plate 10.Partition 20 has the profile of minute two sections of hole enlargements in the direction of leaving bottom 20a, thereby comprises the minor diameter part 201 of bottom 20a side and the large-diameter portion 202 of base plate 10 sides.In the outer peripheral edges of base plate 10, along the all-round stage portion 11 being provided with for embedding outside the end 202a of large-diameter portion 202, partition 20 fixes in base plate 10 by making the end 202a of large-diameter portion 202 be embedded in stage portion 11.And, valve drive 1 with by the rotor of motor M 30 towards upside, the S of fluid chamber is used towards the configuration mode (with reference to figure 1) of downside.In base plate 10, be provided with towards downside and extend the fluid ingress pipe 2 forming, so that fluid imports in the S of fluid chamber, and the fluid in the S of fluid chamber is derived via being fixed on base plate 10 and extending towards downside the fluid delivery line 3,4 forming.

The rotor 30 of motor M is arranged at the inner side of minor diameter part 201 to be sheathed on the state of spindle unit 21.In valve drive 1, spindle unit 21 is along the axis X setting that becomes the pivot of motor M, one end 21a of this spindle unit 21 is supported by the recess 20b of bottom 20a, and other end 21b utilizes the 10a of the hole portion brazing filler metal of base plate 10, so spindle unit 21 is with the state setting of spline.Rotor 30 is by spindle unit 21 supportings for rotating, and when motor M drives, rotor 30 rotates around axis X.

Rotor 30 comprises base portion 31 and magnet 32, and described base portion 31 has the bearing portion 31a that is sheathed on spindle unit 21, the N phase of described magnet 32 and S around axis X circumferentially on alternate configurations.Magnet 32 is integrally formed by insert-molding and rotor 30 when rotor 30 is carried out to resin forming, the circumferential all-round magnet 32 that is provided with on base portion 31 edges around axis X.

In the bottom by base plate 10 sides of base portion 31, the transmitter shaft 33 that the rotation of rotor 30 is passed to aftermentioned valve portion 70 inserts and is fixed between bearing portion 31a and base portion 31.Identical with rotor 30, transmitter shaft 33 is also supported as rotating by spindle unit 21, and around axis X, rotates integratedly with rotor 30.

Transmitter shaft 33 extends towards the below of base plate 10 sides along axis X, and makes the upper surface 10b butt of its terminal part 33a and base plate 10.In the present embodiment, rotor 30 is sheathed on the spring Sp of one end 21a side of spindle unit 21 to the below application of force of base plate 10 sides, the active force that the terminal part 33a of transmitter shaft 33 utilizes this spring Sp all the time with the upper surface 10b butt of base plate 10, thereby make rotor 30 axis X axially on location.

The upside of the terminal part 33a of transmitter shaft 33 becomes the large-diameter portion 33b that diameter is larger than the diameter of this terminal part 33a, in the periphery of this large-diameter portion 33b, is provided with the 33c of tooth portion, the 33c of this tooth portion and the 71g of the tooth portion engagement (with reference to figure 2) that is arranged at the periphery of aftermentioned gear 71.

As shown in Figure 1, the minor diameter part that holds rotor 30 201 of partition 20 is formed the tubular that surrounds the magnet 32 of rotor 30 with predetermined distance, sheathed and stator module 40 is installed in the periphery of this minor diameter part 201.In the present embodiment, connecting minor diameter part 201 arranges with axis X orthogonally with the plectane portion 203 of large-diameter portion 202, by this plectane portion 203, be sheathed on the location of the stator module 40 of minor diameter part 201, at rotor 30(magnet 32) radial outside dispose two stator pack 50A, 50B.In addition, because the magnetic force by from aftermentioned stator module 40 sees through the magnet 32 that partition 20 drives rotor 30, so partition 20 consists of nonmagnetic material.And, in order to resist the pressure of the S of fluid chamber, by metal, form partition 20.Therefore, by the stainless steel as nonmagnetic metal, form partition 20.

As shown in Figure 2, stator module 40 is included in axial stacked two stator pack 50A, the 50B of axis X, sheathed and the external stator core 59 of the periphery of surrounding stator pack 50A, 50B is installed at this stator module 40.Identical with aftermentioned inner-stator iron core 51,52, by the plate body to as magnetic, carry out punch process and form external stator core 59, external stator core 59 is sheathed and while being installed on stator pack 50A, 50B, external stator core 59 and the state setting of inner-stator iron core 51,52 to be in contact with one another, and form magnetic circuit by external stator core 59 and inner-stator iron core 51,52.

Stator pack 50A, 50B have respectively following basic structure: vertically between a pair of inner-stator iron core 51,52 of arranged spaced, dispose the drive coil 54 of the periphery that is wound in drum stand 53.In stator module 40, drum stand 53 is that the inner-stator iron core 51,52 of stator pack 50A, 50B is embedded in its inner resin-formed body (insulator) forming by insert-molding, and drum stand 53 is integrally formed with aftermentioned terminal maintaining part 55.

Fig. 4 (a) is the cutaway view of the major part in enlarged drawing 1, and Fig. 4 (b) is the enlarged drawing of the region A in figure (a).As shown in Figure 4, inner-stator iron core 51,52 comprises flange part 510,520 and a plurality of utmost point tooth 511,521 of ring-type, the flange part 510,520 of described ring-type with axis X quadrature towards configuration, described a plurality of utmost point tooth 511,521 erects formation from the interior Zhou Dynasty of flange part 510,520 to axis X direction, at the internal side diameter of flange part 510,520, utmost point tooth 511,521 made progress with equal intervals setting in the week around axis X.The a pair of inner-stator iron core 51,52 of stator pack 50A, 50B with the utmost point tooth 521 of the utmost point tooth 511 of the inner-stator iron core 51 of a stator pack 50A and the inner-stator iron core 52 of another stator pack 50B around axis X circumferentially on the mode of alignment arrangements alternately, and so that utmost point tooth each other 511,521 is opposed towards configuration.

The base portion cylindraceous 530 that is wound with the drum stand 53 of drive coil in periphery is positioned at the radial outside of utmost point tooth 511,521, the axis X of this base portion 530 axially on two ends along around axis X circumferential all-round, be provided with towards radial outside extension along portion 531,532.

As shown in Figure 2, in stator module 40, with axis X axially on make flange part 510,520(with reference to figure 4) state that contacts with each other is provided with the inner-stator iron core 51 of stator pack 50A and the inner-stator iron core 52 of stator pack 50B.And the state that the inner-stator iron core 51 of stator pack 50A and the inner-stator iron core 52 of stator pack 50B seamlessly engage with these flange parts 510,520 remains in resin.

In imbedding the stator module 40 of inner-stator iron core 51,52, utmost point tooth 511,521 is exposed to the internal side diameter of the base portion 530 of drum stand 53, and the surface by drive coil 54 sides of flange part 510,520 is configured along the resin of portion 531,532 and covers.At this, the internal side diameter that utmost point tooth 511,521 is exposed to the base portion 530 of drum stand 53 is for when being formed on inside by insert-molding and imbedding the drum stand 53 of inner-stator iron core 51,52, by the internal side diameter of utmost point tooth 511,521 as and mould between location division.

And, in stator module 40, the installation portion 57(that forms ring-type by the resin material of the upper surface of the internal side diameter of the flange part 510 of covering stator group 50B is with reference to figure 2, Fig. 3), embedded and the chimeric wall 91c of outer cover part 90 in aftermentioned is installed at this installation portion 57.And the abutting part 58(that forms ring-type by the resin material of the lower surface of the internal side diameter of the flange part 520 of covering stator group 50A is with reference to figure 2).When stator module 40 is sheathed on to the minor diameter part 201 of partition 20, this abutting part 58 is connected to the plectane portion 203 as the border between minor diameter part 201 and large-diameter portion 202 from axis X direction, by carrying out stator module 40 location in the axial direction with the abutting part 58 of plectane portion 203 butts.

As shown in Figure 4, a part at the peripheral part of the flange part 510,520 of each stator core is formed with notch part 510b, the 520b towards axis X side depression, overlapping position when notch part 510b, the 520b of each flange part 510,520 is arranged on from the end on observation of axis X.In the present embodiment, utilize the position of this notch part 510b, 520b that terminal maintaining part 55 is set.

The terminal maintaining part 55B of stator pack 50B arranges across notch part 510b, the 520b of flange part 510,520.This terminal maintaining part 55B and being integrally formed along portion 532,531 of drum stand 53 that is positioned at the both sides of flange part 510,520, and axis X axially on there is the thickness of regulation.

The terminal maintaining part 55A of stator pack 50A is arranged at the notch part 520b of the flange part 520 of inner-stator iron core 52.Being integrally formed along portion 532 of the drum stand 53 of this terminal maintaining part 55A and stator pack 50A, and axis X axially on there is the thickness of regulation.

The terminal maintaining part 55B of the terminal maintaining part 55A of stator pack 50A and stator pack 50B arranges across interval in axis X direction.At the terminal maintaining part 55A of stator pack 50A, 50B, 55B is pressed into and be supported with a plurality of coil terminals 56, a plurality of coil terminals 56 are along the direction setting of the axial quadrature with axis X, the i.e. outstanding setting from stator module 40 towards radial outside, and the cardinal extremity of coil terminals 56 is positioned at notch part 510b, 520b.

Therefore, sheathed and be installed in the external stator core 59 of stator module 40, in the surrounding wall portion 592 of surrounding the periphery of stator pack 50A, 50B, be provided with for avoiding the breach 593(interfering with coil terminals 56 with reference to figure 3), and the surrounding wall portion 92 of outer cover part 90 is also provided with for avoiding the peristome 92a(interfering with coil terminals 56 with reference to figure 2 in aftermentioned).At this, in the present embodiment, due to the coil terminals 56 of stator pack 50A and the coil terminals 56 of stator pack 50B axis X axially near configuration, the size of scope and the size of the scope that peristome 92a is set in surrounding wall portion 92 that therefore can dwindle the formation breach 593 in external stator core 59.

In addition, as shown in Figure 3, external stator core 59 has and has round-ended cylinder shape, and in bottom, 591 central portion is provided with the opening 591a that can connect the bottom 20a side of inserting partition 20.And the surrounding wall portion 592 of 591 the all-round setting along bottom is the drum of the flange part 510,520 of all-round encirclement stator pack 50A, 50B.

As shown in Figure 4, coil terminals 56 is pins of conductivity of the clavate shape of linearly extension, and coil terminals 56 connects the peristome 92a arranging at upper outer cover part 90 and makes its end side be positioned at connector sheath portion 93(accommodation section 95).

In the stator module 40 of present embodiment, because notch part 510b, the 520b of the flange part 510,520 at inner-stator iron core 51,52 is provided with terminal maintaining part 55A, 55B, therefore compare with the situation that breach is not set, suitably prevented that terminal maintaining part 55A, 55B are outstanding towards radial outside, and then prevented that motor M from maximizing diametrically.

And, owing to utilizing the thickness of flange part 520 that terminal maintaining part 55A is set in stator pack 50A, in stator pack 50B, utilize the thickness of flange part 510,520 that terminal maintaining part 55B is set, therefore can increase the thickness of terminal maintaining part 55A, 55B.Thus, terminal maintaining part 55A, the bearing strength of 55B to coil terminals 56 have been improved.

In the terminal maintaining part 55A of stator pack 50A, a plurality of coil terminals 56 that are pressed into supporting are positioned at the thickness range of flange part 520 of the inner-stator iron core 52 of stator pack 50A.In the terminal maintaining part 55B of stator pack 50B, a plurality of coil terminals 56 that are pressed into supporting are positioned at the thickness range of lap of the flange part 510,520 of overlapping in the axial direction stator core.

In the present embodiment, the side bundle by terminal maintaining part 55A at the coil terminals 56 being kept by terminal maintaining part 55A is wound with the drive coil 54(A phase coil from stator pack 50A) end (not shown) of the spiral of drawing, in the side bundle by terminal maintaining part 55B of the coil terminals 56 being kept by terminal maintaining part 55B, be wound with the drive coil 54(B phase coil from stator pack 50B) end (not shown) of the spiral of drawing.And, by the coil terminals 56 of these terminal maintaining parts 55A, 55B supporting, by thering is flexual shared printed base plate 60(, be expressed as below substrate 60 respectively) be connected with each self-corresponding bonder terminal 61.In addition, coil terminals 56 is connected with the corresponding distribution being arranged in the distribution of substrate 60 by soldering on the surface of the side contrary with drive coil 54 of substrate 60 respectively.In addition, coil terminals 56 leans on the position of radial outside to be connected with substrate 60 in the part that is wound with the end (not shown) of the spiral of drawing from drive coil 54 than bundle respectively, thereby between terminal maintaining part 55A, 55B and substrate 60, has guaranteed for tying the space around the end of the spiral of drawing from drive coil 54 (not shown).

As shown in Figure 1 to Figure 3, upper outer cover part 90 is to hold the stator module 40 of motor M and the parts of external stator core 59, and there is the sheath portion 91 of upper surface of covering stator assembly 40 and the surrounding wall portion 92 of the periphery of encirclement external stator core 59, in surrounding wall portion 92, be formed with connector sheath portion 93.

Protuberance 91a in the form of a ring when the central authorities of sheath portion 91 are provided with from end on observation, is provided with the opening 91b that can Visual Confirmation be positioned at the partition 20 of protuberance 91a in the central authorities of this protuberance 91a.A side contrary with protuberance 91a in sheath portion 91 downward the outstanding chimeric wall 91c(that is formed with ring-type with reference to figure 2), this chimeric wall 91c is embedded in the stage portion 57a(of installation portion 57 of general toroidal shape with reference to figure 2), described installation portion 57 is arranged on the top of stator module 40.

Fig. 5 is the figure of the connector sheath portion 93 of the upper outer cover part 90 of explanation, Fig. 5 (a) is the connector portion 94 of connector sheath portion 93 and the stereogram of accommodation section 95 of observing from oblique upper, Fig. 5 (b) be from oblique beneath to connector portion 94 and the stereogram of accommodation section 95, Fig. 5 (c) is the plane graph of the accommodation section 95 from radially observing.Fig. 6 is the figure of explanation connector sheath portion 93, and Fig. 6 (a) is the vertical view of observing from the upside of axis X direction, and Fig. 6 (b) is stereogram.Fig. 7 is the figure of explanation connector portion 94, and Fig. 7 (a) is the upward view of observing from the downside of axis X direction, and Fig. 7 (b) is the stereogram of observing from the oblique downside of axis X direction.

As shown in Figure 5, during from end on observation in the form of a ring, in valve drive 1, surrounding wall portion 92 is set as the periphery of surrounding external stator core 59 to the surrounding wall portion 92 of upper outer cover part 90.The lower end 92b(of surrounding wall portion 92 is with reference to figure 3) be positioned at than the coil terminals 56 and the drive coil 54 that are disposed at the inner side of upper outside cap assembly 90 and connector sheath portion 93 and lean on the position of the downside of axis X direction, thus can suitably prevent that the water that is attached to surrounding wall portion 92 from arriving the conductive parts such as coil terminals 56 and drive coil 54.

When radially observing, in surrounding wall portion 92, excised the region of interfering with described coil terminals 56, the region of this excision becomes the peristome 92a passing through for the coil terminals 56 extending from stator module 40 towards radial outside.In surrounding wall portion 92, peristome 92a is formed in the altitude range till near from the lower end of this surrounding wall portion 92 to sheath portion 91 (with reference to figure 5(b)), the top 92a1 of this peristome 92a from sheath portion 91 down lateral deviation from position and sheath portion 91 extend abreast.Circumferential two side 92a2, the 92a2 of the peristome 92a of surrounding wall portion 92 are along the linearly extension of axis X, and peristome 92a has essentially rectangular shape (with reference to figure 5(c) when radially observing).

Both sides at the top of peristome 92a 92a1 are given prominence to and are provided with protuberance 921 towards radial outside.Described substrate 60 is connected to this protuberance 921(with reference to figure 1 from radial outside), by this protuberance 921, carry out substrate 60 location diametrically.

In the surrounding wall portion 92 of upper outer cover part 90, in the position that clips the side that axis X is contrary with peristome 92a, be provided with engaged part 922, described engaged part 922 is for engaging arm 84 engagings of outer cover part 80 under aftermentioned.Upper outer cover part 90 is integrally formed with connector portion 94 and the accommodation section 95 of connector sheath portion 93.

As shown in Figure 3, in the surrounding wall portion 92 of upper outer cover part 90, at the radial outside of peristome 92a, be provided with the connector sheath portion 93 of this peristome of covering 92a.Connector sheath portion 93 has connector portion 94, accommodation section 95 and cap 96, described connector portion 94 extends towards below and is positioned at the 92a of the ratio open portion position of side on the lower from the radial outside of surrounding wall portion 92, described accommodation section 95 holds the substrate 60 that described coil terminals 56 is connected with the bonder terminal 61 that is arranged at this connector portion 94, the opening 930 of described cap 96 sealing accommodation sections 95.In the present embodiment, by outer cover part 90 and the 94(of connector portion accommodation section 95, cap 96 in polybutylene terephthalate (PBT) (PBT) formation), the upper outer cover part 90 that is formed with accommodation section 95 utilizes on the above-below direction in Fig. 5 (a) and is divided into two-part mould molding.

As shown in Figure 4, the position of the radial outside that becomes described large-diameter portion 202 in connector portion 94, the side of the S of fluid chamber consisting of base plate 10 and large-diameter portion 202 is provided with terminal supporting 940, in this terminal supporting 940 along around axis X circumferentially across being arranged at intervals with a plurality of described bonder terminal 61(with reference to figure 3).Bonder terminal 61 respectively through-thickness (axis X direction) connects terminal supporting 940 and arranges, when radially observing, bonder terminal 61 lays respectively at than described coil terminals 56 position on the lower, and with coil terminals 56 roughly quadrature towards setting.

Bonder terminal 61 connects with corresponding coil terminals 56 by substrate 60 respectively, and the connecting portion (soldering portion) that the connecting portion (soldering portion) of bonder terminal 61 and substrate 60 is arranged on the coil terminals 56 supporting from substrate 60 and terminal maintaining part 55A departs from the position of specified altitude h along axis X direction towards below.And, the substrate 60 of connecting coil terminal 56 and bonder terminal 61 with kink 60cWei circle Jiang Qi one end (upper end 60a) side towards the direction along axis X, direction by the other end (bottom 60b) side towards the direction along with axis X quadrature, is roughly L word shape bending while analysing and observe observation.

As shown in Figure 7 (b) shows, terminal supporting 940 has the surrounding wall portion 941 of the periphery of and encirclement bonder terminal 61 outstanding towards below from terminal supporting 940, this surrounding wall portion 941 consists of side wall portion 942,942, outside wall portions 943 and inner wall part 944, described side wall portion 942,942 is arranged on the both sides of the long side direction of terminal supporting 940, described outside wall portions 943 is along the lateral margin setting of the radial outside of terminal supporting 940, and described inner wall part 944 is along the lateral margin setting of the radially inner side of terminal supporting 940.

The outside diameter of inner wall part 944 (the right oblique upper side in Fig. 7 (b)) is cut and form notch part 944a except two tie-beams 945,945 with terminal supporting 940.This notch part 944a has the width L3 larger than the width L2 of substrate 60, is provided with the engaging portion 944b of engaging protrusion (not shown) engaging that makes respective side connector in the central authorities of the Width of this notch part 944a.The flat shape of tie-beam 945,945 when observing from axis X side (internal side diameter) is essentially rectangular shape, and the handling direction with respect to connector portion 94 arranges along respective side connector.In order to strengthen inner wall part 944 with respect to the power that is applied to engaging portion 944b when extracting respective side connector, connect inner wall part 944 and form this tie-beam 945,945 with the lateral margin of the internal side diameter of terminal supporting 940, by will act on engaging portion 944b(inner wall part 944 when extracting respective side connector) power transmission (release) to terminal supporting 940 sides, prevent that stress from concentrating on the connecting portion of inner wall part 944 and side wall portion 942 and inner wall part 944 is ruptured from connecting portion.In the connector portion 94 of present embodiment, owing to being provided with tie-beam 945,945, even so separate configuration side wall portion 942,942, also can guarantee sufficient intensity, thus can be by the width L3(of notch part 944a with reference to figure 5(b)) be made as be greater than substrate 60 width L2(with reference to figure 3).

The connecting portion with terminal supporting 940 in tie-beam 945 is provided with inclined plane 945a, and with the thickness of tie-beam 945, along with the bearing-surface 940b side (upside in Fig. 4) of the substrate 60 towards terminal supporting 940, the mode of attenuation forms inclined plane 945a.And, in the side being exposed in notch part 944a of terminal supporting 940, be also provided with the inclined plane 940a towards the direction inclination identical with inclined plane 945a.Therefore, as shown in Figure 4, the gap W1 between tie-beam 945 and the enhancing wall 82 of aftermentioned installation portion 85 and terminal supporting 940 and the gap W2 strengthening between wall 82 expand along with the upper side towards upper outer cover part 90.

In the present embodiment, by substrate 60 solderings in the stator module 40(of coil terminals 56 with reference to figure 3) assemble successively external stator core 59 and upper outer cover part 90, in connector sheath portion 93, at the internal side diameter of terminal supporting 940, guaranteed for avoiding the gap Sa(interfering with coil terminals 56 and substrate 60 with reference to figure 4).

At this, after outer cover part 90 in just assembling, the bottom 60b of substrate 60 is arranged in the position that Fig. 4 dots, therefore bottom 60b side need to be bent to (arrow reference diagram) from this state towards radial outside, and making the terminal hole 601(that is arranged at bottom 60b with reference to figure 3) bonder terminal 61 outstanding towards top with upper surface (bearing-surface 940b) from terminal supporting 940 engage, thereby substrate 60 be bearing on the bearing-surface 940b of terminal supporting 940.

But, because the enhancing wall 82 of aftermentioned installation portion 85 is positioned at the internal side diameter of terminal supporting 940, if therefore terminal supporting 940 and this gap strengthening between wall 82 are little, when the 60b side of the bottom of bending substrate 60, substrate 60 integral body significantly need to be bent, now cause the crooked process radius of substrate 60 to diminish.Therefore, need to lengthen the length L 1(of long side direction of substrate 60 with reference to figure 3), make the length L 1 of the long side direction of substrate 60 have more than needed.In the present embodiment, by the side by terminal supporting 940 of inner wall part 944 is excised the internal side diameter of terminal supporting 940 is exposed in notch part 944a, therefore expanded the gap Sa of the internal side diameter of terminal supporting 940.And, by inclined plane 945a, 940a being set at tie-beam 945 and terminal supporting 940 respectively, expand the gap between tie-beam 945 and terminal supporting 940 and this enhancing wall 82, and make bonder terminal 61 be arranged in the position near these inclined planes 945a, 940a of the bearing-surface 940b of terminal supporting 940.

Therefore, compare with the situation that notch part 944a is not set, can shorten the length L 1 of the long side direction of substrate 60, and can increase the crooked process radius of the substrate 60 while bending substrate 60.And, by inclined plane 940a, 945a are set, make the amount of these inclined planes of gap enlargement 940a, 945a, the guiding piece performance function while therefore making inclined plane 940a, 945a as bending substrate 60, and be of value to the crooked process radius that expands the substrate 60 while bending substrate 60.

And, due to can be by the length L 1 that notch part 944a shortens the long side direction of substrate 60 be set at inner wall part 944, therefore can with respect to upper end 60a lateral bend, roughly under the state of 90 °, make the kink 60c in substrate 60 be configured in the position of leaving the enhancing wall 82 being made of metal the bottom 60b side of substrate 60.

If the length L 1 of the long side direction of substrate 60 is elongated, likely cause kink 60c to contact with the enhancing wall 82 being made of metal.At this, the distribution that has connecting coil terminal 56 and bonder terminal 61 in the interior setting of substrate 60 (printing), if substrate 60 is in contact with one another with enhancing wall 82, the vibration that substrate 60 can produce due to the driving of Yin Mada M etc. is enhanced wall 82 grindings, cause being arranged between the distribution of substrate 60 and connect by the enhancing wall 82 being made of metal, be likely short-circuited.As mentioned above, the length L 1 that suppresses the long side direction of substrate 60 by inclined plane 940a, 945a are set, can make kink 60c in substrate 60 be configured in and leave the position that strengthens wall 82, therefore reduce and contacted with enhancing wall 82 possibility being short-circuited because of kink 60c.And therefore, owing to can increasing the crooked process radius of substrate 60, can suitably prevent the problem that crooked process radius hour likely causes, for example substrate 60 or be arranged at the problem of Wiring pattern (copper pattern) fracture in substrate 60.

As shown in Figure 5, the adjacent setting of upside of the accommodation section of connector sheath portion 93 95 and connector portion 94, and the side wall portion 952,952 that there is the upper wall portions 951 that arranges along the top 92a1 of the peristome 92a of surrounding wall portion 92 and arrange along the side 92a2 of peristome 92a.These upper wall portions 951 and side wall portion 952,952 outer peripheral faces from surrounding wall portion 92 are outstanding towards radial outside, during from the radially observation of axis X, upside and both sides that these upper wall portions 951 and side wall portion 952,952 are set as the peristome 92a that will be arranged at surrounding wall portion 92 surround.

Side wall portion 952,952 is along the total length setting of the side 92a2 of peristome 92a, and the upper end of side wall portion 952,952 is connected with the both ends of the long side direction of upper wall portions 951.As shown in Figure 6 (b), the more past downside of bottom side of side wall portion 952 more protrudes towards the direction of leaving surrounding wall portion 92, in the lower end of the part (protuberance 952c) of this protrusion, is connected with described terminal supporting 940.

Therefore, the connector portion 94 with terminal supporting 940 remains on the position from the periphery of surrounding wall portion 92 to radial outside separation by side wall portion 952,952, and the protuberance 952c of the lower end side of side wall portion 952,952 is as the rib performance function of guaranteeing the bearing strength of terminal supporting 940.Thus, guaranteed with respect to acting on the intensity of force of terminal supporting 940 when respective side connector is extracted by connector portion 94.And, while being provided with the part of this terminal supporting 940 from radially observing of axis X, by terminal supporting 940, upper wall portions 951 and side wall portion 952,952, formed the perisporium (encirclement wall) of the peristome 92a that surrounds surrounding wall portion 92.

As shown in Figure 6, on the top of the internal side diameter of upper wall portions 951, be provided with groove 951a, while observing from top, this groove 951a is along the arcuation of the periphery of surrounding wall portion 92.In the week around axis X, make progress, the both ends 951a1 of the long side direction of groove 951a is positioned at the position by the diameter line Im1 side through axis X than the both ends 951b of the long side direction of upper wall portions 951.Therefore, the circumferential lengths of groove 951a is shorter than the circumferential lengths of upper wall portions 951, and the both ends of the Width of upper wall portions 951 become the engaging portion 951c of the engaging portion 971b engaging that makes aftermentioned cap 96.

And, the circumferential lateral surface around axis X at side wall portion 952, the peripheral part 953 from side wall portion 952 towards internal diameter lateral deviation from position be formed with stage portion 954, the chimeric wall portion 98 that a side of the ratio stage portion 954 outer perimembranous 953 in side wall portion 952 becomes aftermentioned cap 96 is the chimeric inner side of grafting shape chimeric wall portion 955.

At this, the outside chimeric wall portion 990 of aftermentioned cap 96 is axially connected to stage portion 954 from axis X, this stage portion 954 has stage portion 954a, stage portion 954b, stage portion 954c and stage portion 954d, at the rising wood 953a than peripheral part 953, position and this rising wood 953a of side extend along the orthogonal direction of axis X described stage portion 954a abreast on the lower, described stage portion 954b extends along axis X direction by a side and this edge 953b of surrounding wall portion 92 abreast at the edge 953b than peripheral part 953, described stage portion 954c the edge 953c than peripheral part 953 on the lower Yu Gai edge, the position 953c of side extend abreast and arrive the position of side on the lower than the bearing-surface 940b of terminal supporting 940, described stage portion 954d downward extends between this stage portion 954c and stage portion 954b.Therefore, stage portion 954 arranges the part to protuberance 952c.

The terminal supporting 940 being connected with the lower end of side wall portion 952 with its upper surface (bearing-surface 940b) and axis X quadrature towards configuration, the bearing-surface 940b of this terminal supporting 940 is positioned at and than the upper end 943a of the outside wall portions of connector portion 94 943, by the top of sheath portion 91 sides, exceeds the position (with reference to figure 6) of specified altitude h2.The lateral margin 940c of the outside diameter of terminal supporting 940 is positioned at the position by radially inner side than the outside wall portions of the outside diameter of described connector portion 94 943, and this lateral margin 940c becomes the bearing surface for abutting part 974 butts of aftermentioned cap 96.

Fig. 8 is the figure of explanation cap 96.Cap 96 is parts of the opening 930 of closed connector sheath portion 93, in connector sheath portion 93, by upper wall portions 951, side wall portion 952,952 and terminal supporting 940 encirclements, forms this opening 930(with reference to figure 6(a)).Cap 96 has the wall portion 97 of the opening 930 of shutoff connector sheath portion 93, is embedded in the chimeric wall portion 98 of side wall portion 952,952 outside the both sides of the Width of this wall portion 97 are provided with.

As shown in Figure 4, wall portion 97 has from upside and is sticked in the engaging portion 971 of upper wall portions 951, the rake 972 extending towards oblique below from engaging portion 971 and from the lower end of rake 972 towards the sheath portion 973 of the linearly extension in below.In wall portion 97, engaging portion 971 is towards the linearly extension of the direction with axis X quadrature, and the upper surface 971c of engaging portion 971 is positioned at the position on the lower than the upper surface 91d of the sheath portion of upper outer cover part 90 91.At the end of engaging portion 971, along the total length of the Width of engaging portion 971, be provided with the engaging portion 971a of engaging in the groove 951a of described upper wall portions 951, this engaging portion 971a extends towards below along axis X direction.

As shown in Fig. 8 (b), Fig. 8 (c), both sides at the long side direction of engaging portion 971a are provided with engaging in the engaging portion 971b of the engaging portion 951c of described upper wall portions 951, by this engaging portion 971b and described engaging portion 971a engaging are arranged to cap 96 in upper wall portions 951.Thus, by engaging, in engaging portion 971b and the engaging portion 971a of upper wall portions 951, prevented that cap 96 is from connector sheath portion 93 come off (towards radially come off).

In the total length of the lower end edge Width of sheath portion 973, be provided with the abutting part 974 of thin-walled, when cap 96 is assembled into connector sheath portion 93, upper end 943a by the lower surface 974a of this abutting part 974 from the outside wall portions that is axially connected to connector portion 94 943 of axis X, and the lateral margin 940c(of outside diameter that the medial surface 974b of this abutting part 974 is connected to terminal supporting 940 is with reference to figure 4(b)).

Chimeric wall portion 98 is arranged on the both sides of the Width of wall portion 97, and is arranged on abutting part 974 to the scope of engaging portion 971 along the long side direction of wall portion 97.When side-looking is observed, the end side of chimeric wall portion 98 is the shape of mating with the side view of stage portion 954 that is arranged at the periphery of described side wall portion 952, i.e. complete chimeric shape (with reference to figure 6(b)), described chimeric wall portion 98 have from axis X axially with the abutting part 981a of the whole butt of described stage portion 954a, with the abutting part 981b of the whole butt of stage portion 954b, from axis X axially and the abutting part 981c of stage portion 954c integral body butt and with the abutting part 981d of stage portion 954d integral body butt.Therefore, the chimeric wall in the inner side of side wall portion 952 portion 955 is the state that integral body is fitted peripheral part 981 coverings of wall portion 98.

The position that the peripheral part 981 from chimeric wall portion 98 in the medial surface of chimeric wall portion 98 inwards departs from is provided with stage portion 99.This stage portion 99 is the shape of mating with the side view of the inner side chimeric wall portion 955 of side wall portion 952, i.e. complete chimeric shape, a side of the ratio stage portion 99 outer perimembranous 981 in chimeric wall portion 98 becomes with the inner side chimeric wall portion 955 of side wall portion 952 and is the chimeric outside of grafting shape chimeric wall portion 990.

Fig. 9 is the outside chimeric wall portion 990 of cap 96 sides and the figure of the embedded structure of the inner side chimeric wall portion 955 of accommodation section 95 sides in explanation connector sheath portion 93, Fig. 9 (a) is the stereogram of connector sheath portion 93, Fig. 9 (b) is the C-C cutaway view in Fig. 9 (a), Fig. 9 (c) is the B-B cutaway view in Fig. 9 (a), and Fig. 9 (d) is the A-A cutaway view in Fig. 9 (a).In addition, the cross section of Fig. 9 (b), Fig. 9 (c), Fig. 9 (d) represents the state in each cross section that the right side (radial outside of axis X) from Fig. 9 (a) is observed.

As mentioned above, when cap 96 is assembled into the accommodation section 95 of connector sheath portion 93, the outer periphery that is embedded in the inner side chimeric wall portion 955 of accommodation section 95 sides of outside chimeric wall portion 990 of cap 96 sides.At this, if water etc. are attached to connector sheath portion 93 from outside, exist from being exposed to the possibility of the cap 96 of periphery of connector sheath portion 93 and the junction surface water leaking-in of accommodation section 95 etc.At this, because the related valve drive 1 of present embodiment is the valve drive of valve gear that the refrigerant flow path of refrigerator is opened and closed, therefore as the water that is attached to connector sheath portion 93, such as the water that can consider to use in kitchen or at the moisture of the pet excretion of indoor feeding etc.

If enter this moisture from being exposed to the cap 96 of the periphery of connector sheath portion 93 with the junction surface of accommodation section 95, as shown in Fig. 9 (b), Fig. 9 (d), abutting part 981a, the 981c of the outside chimeric wall portion 990 of chimeric wall portion 98 from axis X axially and the stage portion 954a of side wall portion 952, the junction surface of 954c butt, due to capillarity etc., moisture is mobile to the direction shown in arrow in figure (direction towards the inner side of connector sheath portion 93) sometimes.But, because the inner side at this junction surface is uprightly provided with inner side chimeric wall portion 955, moisture by 955 blocking-up of inner side chimeric wall portion, has therefore prevented from directly penetrating into from the moisture of the junction surface infiltration of abutting part 981a, the 981c of the chimeric wall of stage portion 954a, 954c and the outside portion 990 of side wall portion 952 inside of connector sheath portion 93 to the movement of direction shown in arrow in figure.

At this, because the stage portion 954c of side wall portion 952 is with respect to axis X tilt (with reference to figure 6(b)), therefore penetrate into the moisture at junction surface of the abutting part 981c of the chimeric wall of this stage portion 954c and outside portion 990 direction shown in can the arrow A 1 in Fig. 9 (a) and move, finally between cap 96 and accommodation section 95 to the outside wall portions 943 sides discharges of connector portion 94.At this, because the bearing-surface 940b of the terminal supporting 940 with outside wall portions 943 disposed adjacent is positioned at the position (with reference to figure 6(b) than the top side of upper end 943a of outside wall portions 943), so the moisture of this discharge can not contact with the bonder terminal 61 being supported by terminal supporting 940.In addition, in the situation that between peripheral part 981 and stage portion 954, (between stage portion 954a and abutting part 981a, between stage portion 954b and abutting part 981b, between stage portion 954c and abutting part 981c, between stage portion 954d and abutting part 981d) exists moisture (soaking), moisture moves towards below sometimes between peripheral part 981 and stage portion 954.

At this, as shown in Fig. 9 (b)～Fig. 9 (d), in the chimeric part of inner side chimeric wall portion 955 and outside chimeric wall portion 990, capillary force also acts on the gap Sx that chimeric wall portion 955 and the composition surface of outside chimeric wall portion 990 extend towards above-below direction along inner side.Therefore, if abutting part 981a, the 981c of stage portion 954a, 954c, 954d and outside chimeric wall portion 990 of chimeric wall portion 955 from inner side are, the moisture that the junction surface of 981d is infiltrated arrives gap Sx, exist moisture in the Sx Nei Chaotu of this gap on side shifting, and the stage portion 99 that arrives outside chimeric wall portion 990 with edge 953a, the 953b of inner side chimeric wall portion 955, the possibility of the gap Sy of the opposed part of 953c.

In the present embodiment, the inner peripheral surface of the chimeric wall of the side 98a(portion 98 of the inner circumferential side of stage portion 99) flush with the inner peripheral surface 955d of inner side chimeric wall portion 955.Therefore, even if arrive the moisture of gap Sy, to right side in figure, (private side of connector sheath portion 93) infiltrate, also can, because surface tension effects stockpiles in the Sy of gap, therefore can stop moisture to penetrate into the inside of connector sheath portion 93.By the way, in the situation that side 98a does not flush with inner peripheral surface 955d, boundary portion at them produces the step that moisture is stockpiled, and likely occurs following situation: stockpile after the moisture of this step stockpiles in a large number, drippage (infiltration) is to the private side of connector sheath portion 93.

And, as shown in Figure 9 (c), the part along stage portion 954b in inner side chimeric wall portion 955, the moisture that penetrates into the junction surface of stage portion 954b and outside chimeric wall portion 990 is subject to Action of Gravity Field, and the moisture that sometimes infiltrated is mobile towards the downside (arrow A 2 directions in figure) of gravity direction.And, if moisture direction shown in arrow A 2 in figure moves, the abutting part 981d of can be from the outside chimeric wall of mobile moisture portion 990 along axis X axially with the junction surface of the stage portion 954d butt of side wall portion 952 outer peripheral face discharge (with reference to figure 9(a), the arrow A 3 to side wall portion 952).

In addition, the moisture (in reference diagram, arrow A 4) infiltrating in the gap between the engaging portion 971 of cap 96 and the surrounding wall portion 92 of upper outer cover part 90 is understood from the groove 951a(of upper wall portions 951 with reference to figure 6(a)) the both ends 951a1 of long side direction by this groove 951a, to side, discharge.At this, because the both ends 951a1 of groove 951a is communicated with described rising wood 953a, discharge to outside at the junction surface of the stage portion 954a of the chimeric wall of abutting part 981a and the inner side portion 955 that the moisture of therefore discharging from groove 951a can be by outside chimeric wall portion 990.

Get back to the explanation of cap 96, as shown in Figure 8, the lateral surface of the abutting part 982 of in chimeric wall portion 98 and side engaging portion 971 is provided with the holding section 985 for preventing that cap 96 from coming off.Holding section 985 is that in holding section, 985 central portion is formed with peristome 986 along long side direction from abutting part 982 side-prominent tabular parts down.The both sides of this peristome 986 become arm 985a, 985a, and the terminal part of this arm 985a, 985a connects by holding section 985b.When cap 96 is assembled into the accommodation section 95 of connector sheath portion 93, the projection 956(that holding section 985b engaging is used in the engaging that is arranged on side wall portion 952 is with reference to figure 3), thus prevent that cap 96 from 95 coming off from accommodation section.

Then, the valve portion 70 driving by motor M is described.Figure 10 is the exploded view of a part of lower outer cover part 80, valve portion 70, platform parts 86 and motor M in valve drive 1.Figure 11 illustrates the gear 71 of valve portion 70 and the exploded view of valve body 72.

The valve portion 70 of valve drive 1 be by motor M around axis X 2(with reference to Figure 10) parts that rotarily actuate, valve portion 70 comprises gear 71 and valve body 72.Gear 71 is and the external gear of the 33c of tooth portion engagement of periphery that is arranged on the transmitter shaft 33 of motor M.As shown in figure 11, at gear 71 center, be formed with the circular 71a of hole portion, and in the bottom surface of gear 71, be formed with umbo 71b and a plurality of (being three in present embodiment) the projection 71c that is disposed at the surrounding of this umbo 71b.

Valve body 72 is to be the roughly parts of circular plate shape, is formed with the circular 72a of hole portion at valve body 72 center, and at the upper surface of valve body 72, is formed with a 72b of hole portion and two recess 72c of the surrounding that is configured in the 72a of hole portion.And, in the bottom surface of valve body 72, be formed with breach 72d.The position that is not formed with breach 72d in the bottom surface of valve body 72 be configured to can shutoff fluid delivery line 3,4 opening 3a, 4a(with reference to Figure 10).

By the umbo 71b of gear 71 and three projection 71c are inserted into respectively to the 72a of hole portion of valve body 72, a 72b of hole portion and two recess 72c, gear 71 and valve body 72 are interfixed.Spindle unit 73(in gear 71 and the valve body 72 quilt perforation 71a of patchhole portion and the 72a of hole portion is with reference to Figure 10) support as rotating, as shown in Figure 1,73aHe lower end, the upper end 73b of spindle unit 73 remains on the support holes 89a of platform parts 86 with the state of spline respectively and is fixed in the 15a of hole portion of link 15 of base plate 10.

The below of link 15 by the side from contrary with motor M is embedded in the through hole 10c that is arranged at base plate 10 and arranges.Central portion at link 15 is formed with the 15a of hole portion for supporting shaft part 73 in the mode towards the S of fluid chamber side opening, in link 15, the opening 3a of fluid delivery line 3, the opening 4a of fluid delivery line 4 are positioned at the position (with reference to Figure 10) of the radial outside of the 15a of this hole portion.Fluid delivery line 3,4 connects link 15 and arranges along axis X direction respectively, and is communicated with the S of fluid chamber that is formed at the top of base plate 10.

In base plate 10, in the position that clips the side that the central 10a of hole portion is contrary with through hole 10c, be provided with through hole 10d, at this through hole, 10d has been embedded in fluid ingress pipe 2.Under this state, the opening 2aChao S of the fluid chamber inner opening of fluid ingress pipe 2, thus fluid ingress pipe 2 is communicated with the S of fluid chamber.

As shown in figure 10, at the upper surface 10b(of base plate 10 with reference to figure 1) be equiped with platform parts 86, these parts 86 comprise platform portion 87 and a plurality of 88(88a of foot, the 88b that from the circumference of platform portion 87, extend to the lower side).Central portion in platform portion 87 is formed with the 87a of hole portion that connects insertion for described transmitter shaft 33, on the radial outside edge of the 87a of this hole portion, comprises the arm 89 of support holes 89a around being circumferentially provided with of axis X.

In the present embodiment, when partition 20 is fixed on to base plate 10, partition 20 is pressed into the plectane portion 203 of partition 20 and the position of the 87 butt Er Shi 88a of foot of platform portion and base plate 10 butts towards the below of base plate 10 sides.Now, because the 88a of 88bBi foot of foot arranges to radial outside is outstanding, so the platform parts 86Yi Jiang 88b of foot remains in partition 20 with the state contacting in interior week of the large-diameter portion 202 of partition 20.

And, the arm 89 that the spindle unit 73 of valve portion 70 is supported can with platform portion 87 distortion vertically independently, below base plate 10 sides when presenting a theatrical performance as the last item on a programme parts 86, arm 89 is the below application of force towards base plate 10 sides by valve body 72.Therefore, the valve body of valve portion 70 72 by arm 89 all the time with the upper surface butt of base plate 10, thereby the valve body 72 that carries out valve portion 70 location in the axial direction.

As shown in Figure 2, sheathed at the large-diameter portion 202 of partition 20 of upper surface that is fixed on base plate 10 and be fixed with lower outer cover part 80.Lower outer cover part 80 is provided with the opening 81a for large-diameter portion 202 insertions of partition 20 in the central authorities of tabular base portion 81, at the inner peripheral of opening 81a, along around a plurality of butt sheet 81b of being circumferentially provided with of axis X, this butt sheet 81b erects formation towards the upside of axis X direction.Butt sheet 81b protrudes and arranges from opening 81a towards axis X side respectively, and can be towards the radial outside strain of axis X.Therefore,, lower outer cover part 80 is sheathed and while being installed on the large-diameter portion 202 of partition 20, large-diameter portion 202, making butt sheet 81b in radial outside expansion, is inserted in the opening 81a of base portion 81, thereby makes lower outer cover part 80 be fixed on partition 20.

As shown in figure 10, the side at the Width of base portion 81 is provided with the installation portion 85 being bent to form towards the downside of axis X direction.Installation portion 85 is refrigerator and arranging for valve drive 1 being installed on to external structure thing, and installation portion 85 is along the total length setting of the long side direction of base portion 81.At installation portion 85, be formed with the 85a of hole portion inserting for perforations such as screws.For fear of described fluid ingress pipe 2 and fluid delivery line 3, interfere, among the Fig. 1 from top view installation portion 85, the 85a of this hole portion axis X radially on be positioned at the position by radial outside than these fluid ingress pipes 2 and fluid delivery line 3.

As shown in figure 10, in the both sides of the long side direction of base portion 81, be provided with towards the upper lateral bend of axis X direction and the enhancing wall 82,83 forming.Strengthen wall 82,83 respectively along the total length setting of the Width of base portion 81, at the upper end 82a, the 83a that strengthen wall, be equiped with outer cover part 90(with reference to figure 3).In the present embodiment, as shown in Figure 1 and Figure 3, coil terminals 56 is positioned at the top of the enhancing wall 82 of a side, at the enhancing wall 83 of opposite side, is provided with the engaging arm 84 for outer cover part 80 under keeping with fastening state and upper outer cover part 90.

In enhancing wall 83, engaging arm 84 extends and arranges towards the direction (top) of leaving base portion 81 from the substantial middle portion of Width, in the upper end side that engages arm 84, towards axis X side protrusion, is provided with holding section 84a.Upper outer cover part 90 is sheathed and while being installed on the external stator core 59 of motor M, holding section 84a engages with the engaged part 922 of upper outer cover part 90, prevents that thus outer cover part 90 from coming off from lower outer cover part 80.

In the lower outer cover part 80 of present embodiment, due to towards axis X axially in the contrary crooked wall 82,83 that strengthens of direction (top) of the bending direction (below) with installation portion 85, therefore improved the bending rigidity of the base portion 81 of time outer cover part 80.This be because, due to by lower outer cover part 80 sheathed (being pressed into) and while being installed on the large-diameter portion 202 of partition 20, large-diameter portion 202 is when making butt sheet 81b expand towards radial outside, be inserted in the opening 81a of base portion 81, therefore thereby make lower outer cover part 80 be fixed on partition 20, prevented that base portion 81 is significantly out of shape because of stress now.At this, in the lower outer cover part 80 of present embodiment, because the enhancing wall 82,83 of the both sides of long side direction is crooked towards identical top respectively, therefore from strengthen wall 82,83 towards axis X axially on the situation of different direction (above-below direction) bending compare, can easily carry out forming the processing while strengthening wall 82,83 and installation portion 85 by bending process.

Below, with reference to Figure 12, the action case of valve drive 1 is described.Figure 12 is for the figure of the action of valve drive 1 is described, to observe valve bodies 72 and the figure of fluid delivery line 3,4 is shown with imaginary line from lower outer cover part 80 sides, Figure 12 (a) illustrates the figure that closes valve state that fluid delivery line 3,4 both sides are closed by valve body 72, Figure 12 (b) is the first figure that opens valve state that illustrates that fluid delivery line 4 closed by valve body 72, Figure 12 (c) is the second figure that opens valve state that illustrates that fluid delivery line 3,4 both sides are opened, and Figure 12 (d) is the 3rd figure that opens valve state that illustrates that fluid delivery line 3 closed by valve body 72.

In valve drive 1, by switching on to drive coil 54 via bonder terminal 61, substrate 60 and coil terminals 56, the drive coil 54 of stator pack 50A, 50B, by excitation, makes rotor 30 rotations by this magnetic force.The rotation of rotor 30 is passed to valve body 72 via the 33c of tooth portion of transmitter shaft 33, and valve body 72 rotarilys actuate around axis X 2.

< closes valve state >

As shown in Figure 12 (a), under the state of the position beyond breach 72d is positioned at fluid delivery line 3,4, valve body 72 is the valve state that closes (full cut-off) of shutoff fluid delivery line 3,4, and block fluid derives to fluid delivery line 3,4 from the S of fluid chamber.

< first opens valve state >

As shown in Figure 12 (b), at gear 71 from closing valve state and valve body 72, rotate in a clockwise direction and breach 72d is arrived the state of position of fluid delivery line 3, valve body 72 is first of open fluid delivery line 3 and shutoff fluid delivery line 4 and opens valve state (opening a part), allow that fluid is from the S of fluid chamber to 3 derivation of fluid delivery line, and block fluid derives to fluid delivery line 4.

< second opens valve state >

As shown in Figure 12 (c), further rotate in a clockwise direction and breach 72d is arrived the state of position of fluid delivery line 3,4 opening gear 71 valve state and valve body 72 from first, valve body 72 is second of open fluid delivery line 3,4 and opens valve state (standard-sized sheet), allows that fluid is from the S of fluid chamber to 3,4 derivation of fluid delivery line.

< the 3rd opens valve state >

As shown in Figure 12 (d), further rotate in a clockwise direction and breach 72d is crossed the state of position of fluid delivery line 3 opening gear 71 valve state and valve body 72 from second, valve body 72 is the 3rd of shutoff fluid delivery line 3 and open fluid delivery line 4 and opens valve state (opening a part), block fluid derives to fluid delivery line 3 from the S of fluid chamber, and allows that fluid is to 4 derivation of fluid delivery line.

As mentioned above, in the cover structure of the motor of present embodiment, in motor M, the stator module 40(stator with drive coil 54) be configured in the upper outer cover part 90(main body outer cover of the surrounding wall portion 92 with the periphery that covers this stator module 40) in, the coil terminals 56 that is connected with the end of drive coil 54 extends towards radial outside through the peristome 92a that is arranged at surrounding wall portion 92 from stator module 40, and be connected with bonder terminal 61 in the surrounding wall portion of surrounding peristome 92a, utilization has the outer cap 96(packaged unit that is embedded in the chimeric wall portion 98 of surrounding wall portion) sealing opening 930, the cover structure of described motor is made as follows: the upper wall portions 951 being arranged by the top 92a1 along peristome 92a, the side wall portion 952 extending towards below along the side 92a2 of peristome 92a from the two ends of upper wall portions 951, 952 and connect side wall portion 952, terminal supporting 940 between 952 bottom forms the surrounding wall portion of surrounding peristome 92a, at side wall portion 952, 952 periphery is provided with the stage portion 954 of end (abutting part 981) butt of the chimeric wall portion 98 that makes cap 96, the position that makes stage portion 954 at cap 96 with respect to side wall portion 952, the position of the terminal part of offset from side wall portion 952 (peripheral part 953) in 952 chimeric direction.

Due to the position of the stage portion 954 of abutting part 981 butts of the chimeric wall portion 98 for cap 96 part with the peripheral part 953(radial outside of side wall portion 952 for the 98 outer embeddings of chimeric wall portion) at cap 96 with respect to side wall portion 952, in 952 chimeric direction, depart from, and the chimeric wall portion 98 of cap 96 is with respect to side wall portion 952, 952 configurations in the outer part, therefore even if moisture infiltrates to the inner side of side wall portion 952 with the bearing surface of the stage portion 954 of side wall portion 952 from the abutting part 981 of chimeric wall portion 98, if the moisture infiltrating is not by between side wall portion 952 and chimeric wall portion 98 and move to chimeric direction, just cannot penetrate into the inner side of side wall portion 952.Thus, without the seal members such as O type circle are set in addition, just can prevent that moisture from infiltrating in surrounding wall portion (upper outer cover part 90).

Surround the surrounding wall portion 92 of peristome 92a towards the radial outside opening of stator module 40, at surrounding wall portion 92 interior loop terminals 56, by flexual substrate 60, be connected with bonder terminal 61, coil terminals 56 is connected in the surface of the open side by surrounding wall portion 92 in substrate 60 by soldering with bonder terminal 61.

Form if so, because substrate 60 is connected towards the direction along axis X upper end 60a side with kink 60cWei circle with coil terminals 56, and bottom 60b side is connected with bonder terminal 61 towards radial outside bending, therefore surrounding wall portion 92 that can be by the radial outside opening towards stator module 40 is from the connecting portion of radial outside Visual Confirmation coil terminals 56 and bonder terminal 61 the two and substrate 60, so can easily carry out coil terminals 56 and bonder terminal 61 the two with substrate 60 be connected operation (soldering operation).Under this state, although the upper wall portions 951 of surrounding wall portion 92 is positioned at than the position of the top side in soldering position, even if but water is attached to the ratio upper wall portions 951 top side positions of outer cover part 90, due to the outer embedding of cap 96 and be installed on surrounding wall portion 92, therefore can not make moisture enter to be attached in surrounding wall portion 92 connecting portion of coil terminals 56 and bonder terminal 61 the two and substrate 60 yet.

The terminal supporting 940 of the downside making progress the setting party who is arranged in valve drive 1, than the upper surface of this terminal supporting 940, installing and the bearing-surface 940b of supporting substrates 60 position of side on the lower the abutting part 974 of cap 96 and the lateral margin 940c butt of terminal supporting 940.

Infiltrate moisture between side wall portion 952 and chimeric wall portion 98 and by court between side wall portion 952 and chimeric wall portion 98, be positioned at valve drive 1(motor M sometimes) terminal supporting 940 side shiftings of the downside that makes progress of setting party, or, in the situation that moisture is present between peripheral part 981 and stage portion 954, moisture sometimes along peripheral part 981 with the junction surface of stage portion 954 towards being positioned at valve drive 1(motor M) terminal supporting 940 side shiftings of the downside that makes progress of setting party.Form if so, can suitably prevent that mobile moisture from infiltrating towards peristome 92a side from the part of terminal supporting 940.

Be positioned at valve drive 1(motor M) the side wall portion 952 of the both sides that make progress of setting party in lower side, there is protuberance 952c, it is the rib that terminal supporting 940 supports that this protuberance 952c becomes the support unit of bonder terminal 61, stage portion 954 extends to form to the protuberance 952c part in side wall portion 952, in terminal supporting 940, bonder terminal 61 is connected with coil terminals 56 by having flexual substrate 60, protuberance 952c forms link position (soldering position) height that side is extended upward with substrate 60 than the bonder terminal 61 being supported by terminal supporting 940.

Form if so, owing to can stoping moisture to penetrate into connecting portion or substrate 60 that terminal supporting 940 is attached to bonder terminal 61 and substrate 60, the therefore problem such as capable of preventing short circuit suitably.Therefore owing to can preventing that moisture from penetrating into terminal supporting 940, without the situation of having infiltrated for moisture as in the past, in the side that is installed in the substrate 60 of terminal supporting 940, gap is set, thereby avoids the moisture that infiltrated directly and substrate contacts.Thus; by near the configuration side wall portion 952(rib bonder terminal making progress in week 61 at son 30 the rotating shaft that rotates); can shorten the separating distance between the side wall portion 952,952 at the two ends on the long side direction of terminal supporting 940, therefore can suppress to protect the circumferential size of the connector sheath portion 93 of bonder terminal 61.

Be positioned at valve drive 1(motor M) the upper wall portions 951 of the upside that makes progress of setting party, top at the internal side diameter of this upper wall portions 951 is provided with along the groove 951a of the periphery of surrounding wall portion 92, the both ends 951a1 of the long side direction of groove 951a was upwards connected with the stage portion 954a being arranged in the stage portion 954 of side wall portion 952 in the week around axis X, and stage portion 954a radially extends in the both sides of upper wall portions 951.

Because engaging in the groove 951a in upper wall portions 951 has the engaging portion 971 of cap 96, so moisture infiltrates in groove 951a sometimes between the upper wall portions 951 of upper outer cover part 90 and engaging portion 971.Because the both ends 951a1 of the long side direction of this groove 951a is connected with the stage portion 954a that is arranged at side wall portion 952, therefore stockpiles moisture in groove 951a and finally can discharge to being arranged in the stage portion 954a of side wall portion 952.Being discharged to moisture in the stage portion 954a of this side wall portion 952 can discharge to downside by side wall portion 952 and the interface being embedded in outward between the chimeric wall portion 98 of this side wall portion 952.Thus, can suitably prevent that the moisture from infiltrating between upper wall portions 951 and engaging portion 971 from penetrating into inside.

Above, embodiments of the present invention are illustrated, but the present invention is not limited to described execution mode, in the scope that does not depart from aim of the present invention, can suitably changes.For example, valve drive of the present invention can also be applied in the stream of the fluid except the cold-producing medium of refrigerator, and also can suitably change for carry out the structure of valve opening/valve closing by valve body 72.

Claims

1. a cover structure for motor, described motor drives for making to open and close the valve body of valve gear of the stream of fluid, and the cover structure of described motor is characterised in that,

In described motor,

There is the stator arrangement of drive coil in the main body outer cover of the first surrounding wall portion with the periphery that covers described stator,

The coil terminals that is connected with the end of described drive coil extends towards radial outside through the peristome that is arranged at described the first surrounding wall portion from described stator, and in described first surrounding wall portion of surrounding described peristome with connector end sub-connection,

Utilize the opening of packaged unit closed connector sheath portion, described packaged unit has the outer chimeric wall portion that is embedded in described the first surrounding wall portion,

The cover structure of described motor is as follows:

In the periphery of described the first surrounding wall portion, be provided with the stage portion of the end butt that makes described chimeric wall portion,

The position that the position of described stage portion is departed from the terminal part of described the first surrounding wall portion in described chimeric wall portion in the chimeric direction with respect to described the first surrounding wall portion.

2. the cover structure of motor according to claim 1, is characterized in that,

Surround described first surrounding wall portion of described peristome towards the radial outside opening of described stator,

In described the first surrounding wall portion, described coil terminals is by flexual substrate and described connector end sub-connection,

Described coil terminals and described bonder terminal are connected in the surface of the open side of described the first surrounding wall portion in described flexual substrate by soldering.

3. the cover structure of motor according to claim 2, is characterized in that,

The support unit of the downside making progress the setting party who is arranged in described motor, described chimeric wall portion is embedded in the downside surface of described support unit.

4. the cover structure of motor according to claim 3, is characterized in that,

The lower side that is positioned at the side wall portion of the both sides that the setting party of described motor makes progress doubles as the rib that the described support unit of described bonder terminal is supported, and described stage portion is extended the part arranging to the described rib in described side wall portion,

In described support unit, described bonder terminal is connected with described coil terminals by described flexual substrate,

Described rib forms than the link position of the described bonder terminal being supported by described support unit and the described flexual substrate height that side is extended upward.

5. the cover structure of motor according to claim 2, is characterized in that,

Described coil terminals is along the direction setting of axis quadrature with respect to becoming the pivot of described motor, and, described bonder terminal is arranged at described support unit along the direction of described axis, and described support unit is formed at than the described peristome position of side on the lower

The described flexual substrate that connects described coil terminals and described bonder terminal is set as: by upper end side towards the direction along described axis, direction by bottom side towards the orthogonal direction along described axis, the kink of described flexual substrate of take is roughly L word shape as border

The connecting portion of the connecting portion of described coil terminals and described flexual substrate and described bonder terminal and described flexual substrate is set as respectively can be from radial outside via described peristome Visual Confirmation.

6. the cover structure of motor according to claim 5, is characterized in that,

Described motor is to form a pair of stator pack of described stator along the stepper motor of the axially-aligned configuration of rotor,

By being fixed on the partition that has round-ended cylinder shape of the upper surface of base plate, between described base plate and described partition, form the fluid chamber that described fluid is used, and, in the internal configurations of the described partition of the upside of described fluid chamber, there is described rotor,

Described a pair of stator pack is in the periphery of described partition to configure with the opposed mode of described rotor, and described a pair of stator pack described coil terminals is separately outstanding towards radial outside via described peristome in the position with respect to the top side of described support unit.

7. the cover structure of motor according to claim 6, is characterized in that,

Described partition is the partition that has round-ended cylinder shape with the profile of minute two sections of hole enlargements in the direction of leaving bottom, the minor diameter part, diameter that described partition comprises bottom side is than the large large-diameter portion of the diameter of described minor diameter part and the plectane portion that connects described minor diameter part and described large-diameter portion

Described rotor is arranged on the inner side of described minor diameter part, and described a pair of stator pack is installed on the periphery of described minor diameter part with the axial position of rotation of described rotor by the mode of described plectane portion location,

The described fluid chamber forming at the large-diameter portion by described base plate and described partition disposes the valve body that the rotation by described rotor rotarilys actuate.

8. the cover structure of motor according to claim 7, is characterized in that,

In described base plate, be provided with fluid ingress pipe and fluid delivery line, described fluid ingress pipe imports fluid for the downside from described fluid chamber, and described fluid delivery line is derived fluid for the downside from described fluid chamber,

The side of the described fluid chamber forming at the large-diameter portion by described base plate and described partition is provided with described support unit.

9. the cover structure of motor according to claim 1, is characterized in that,

Described peristome is surrounded and is formed by upper wall portions, side wall portion and support unit, and described upper wall portions arranges along the top of described peristome, and described side wall portion, along the side setting of described peristome, is provided with described bonder terminal at described support unit,

Described packaged unit is the cap that is provided with the wall portion of peristome described in described chimeric wall portion and shutoff, described chimeric wall portion be arranged on described wall portion Width both sides and be embedded in described side wall portion outward,

Lateral surface at described side wall portion is formed with described stage portion, and the described chimeric wall portion of described cap is the shape with the form fit of described stage portion.

10. the cover structure of motor according to claim 9, is characterized in that,

Described stage portion be formed at from the peripheral part of described side wall portion towards internal diameter lateral deviation from position, the described chimeric wall portion that a side of the outer perimembranous of stage portion becomes described cap described in the ratio in described side wall portion is the chimeric inner side of grafting shape chimeric wall portion.

The cover structure of 11. motors according to claim 10, is characterized in that,

Connector portion has described support unit and the second surrounding wall portion, the periphery that described the second surrounding wall portion is downward given prominence to and surrounded described bonder terminal from described support unit,

The lower end part of the outside diameter of the described wall portion in described cap is in being bearing-surface position on the lower than the upper surface of described support unit, and with the lateral margin butt of the outside diameter of described support unit.

The cover structure of 12. motors according to claim 1, is characterized in that,

The lower side that is positioned at the side wall portion of the both sides that the setting party of described motor makes progress doubles as the rib that the support unit of described bonder terminal is supported, and described stage portion is extended the part arranging to the described rib in described side wall portion,

In described support unit, described bonder terminal is connected with described coil terminals by flexual substrate,

The cover structure of 13. motors according to claim 12, is characterized in that,

Described peristome is surrounded and is formed by upper wall portions, described side wall portion and described support unit, and described upper wall portions arranges along the top of described peristome, and described side wall portion, along the side setting of described peristome, is provided with described bonder terminal at described support unit,

The bottom side of described side wall portion forms the protuberance as described rib, and the more past downside of described protuberance more protrudes towards the direction of leaving described the first surrounding wall portion, in the lower end of described protuberance, is connected with described support unit.

The cover structure of 14. motors according to claim 13, is characterized in that,

Lateral surface at described side wall portion is formed with described stage portion, and described stage portion is formed to described protuberance,

The described chimeric wall portion of described cap is the shape with the form fit of described stage portion.

The cover structure of 15. motors according to claim 14, is characterized in that,

Described stage portion is formed on the position of departing from towards internal side diameter from the peripheral part of described side wall portion, and the described chimeric wall portion that a side of the outer perimembranous of stage portion becomes described cap described in the ratio in described side wall portion is the chimeric inner side of grafting shape chimeric wall portion.

16. according to the cover structure of the motor described in any one in claim 9 to 11,13 to 15, it is characterized in that,

The setting party who is positioned at described motor to the described upper wall portions of upside, in the side by described the first surrounding wall portion on the top of described upper wall portions, along the periphery of described the first surrounding wall portion, be provided with groove,

The two ends of the long side direction of described groove are connected with the upper end of the stage portion of described side wall portion respectively, and described side wall portion is positioned at the both sides of described upper wall portions.