CN206432864U - Positioning fixture - Google Patents

Abstract

The utility model is related to the positioning fixture for assembling annular stator.For the defect of many end of a thread for overcoming annular stator, annular stator is assembled for convenience simultaneously, positioning fixture of the present utility model has the annular chamber for accommodating annular stator, and is made up of at least two pairs positioning fixture units, and at least two pairs positioning fixture units are circumferentially distributed.Each positioning fixture unit includes：Outer wall, outer wall has inner surface；Inwall, inwall has outer surface；Bottom wall, bottom wall has upper surface.Wherein, the upper surface of the inner surface of outer wall, the outer surface of inwall and bottom wall constitutes the accommodating chamber for accommodating at least one stator component units.The accommodating chamber of each positioning fixture unit circumferentially constitutes annular chamber.The accommodating chamber of two positioning fixture units in any unit to positioning fixture can accommodate the stator component units of same number.It is of the present utility model to have the technical effect that use quickly assemble annular stator according to positioning fixture of the present utility model.

Description

Positioning fixture

Technical field

The utility model is related to a kind of manufacture instrument of motor (motor), more particularly to the stator of assembling motor instrument.

Background technology

It is as the number of poles (number of magnetic poles of rotor) and slot number (equivalent to the number of magnetic poles of stator side) of the basic composition of motor Suitably determined by rating of machine etc..Generally, for the arrangement of each coil of each Combination Design of these numbers of poles and slot number.

Fig. 1 schematically illustrates electric type power steering device 100.The power steering gear 100 is used for the vehicles such as automobile Control wheel (steering wheel) operation auxiliary.Power steering gear 100 has：Torque sensor 102, its detect via with steering Axle portion 101 that mechanism 200 is connected and be applied to the power of control wheel；Control unit 103, it is according to from the torque sensor 102 Output calculate necessary boosting power；Motor 50, it produces revolving force according to the output from the control unit 103；And subtract Fast mechanism 104, its revolving force to motor 50 passes it to steering mechanism 200 while deceleration.Moved being equipped with this In the vehicle of power transfer 100, based on the power being applied on control wheel, the motor 50 of power steering gear 100 is driven, due to The rotation of control wheel is aided in by the revolving force of the motor 50, therefore, it is possible to carry out control wheel operation with less power.

Fig. 2 schematically illustrates the section of motor 50.Motor 50 is the motor of the so-called inner-rotor type for setting the groove of 8 pole 12. Motor 50 has axle 51, rotor 52, stator 1, bus bar unit (not shown) and motor housing 5.

Stator 1 has iron core 2, insulator 3 and coil 4.Iron core 2 is formed by stacked steel plate.In addition, iron core 2 has Teeth portion 22 and the annular portion 21 in annular shape (referring to Fig. 2 and 3).Teeth portion 22 by the inner side from annular portion 21 thereto the heart protrude 12 unit teeth portion 22a are constituted.Insulator 3 across insulating properties on each unit teeth portion 22a wrapped around wire, by with one heart around Method formation coil 4.That is, being formed with the coil group being made up of 12 coils 4 in teeth portion 22.In addition, wire is contained In 12 spaces (groove) 6 between unit teeth portion 22a adjacent to each other (12 groove).

Iron core 2 is formed (referring to Fig. 2 and Fig. 3) by linking 12 unit iron core 2a.Each unit iron core 2a prolongs vertically Stretch and in the face shaping with substantially T-shaped section, each unit iron core 2a has 1 unit teeth portion 22a (reference picture respectively 4).For three phase electric machine, each two each unit teeth portion 22a is across the coiled electrical conductor of insulator 3 formation coil 4, and each two is wound in Coil 4 on different units teeth portion 22a passes to in-phase current, and total formation 6 passes to the coil of in-phase current to 41a, 41b； 42a、42b；43a、43b；44a、44b；45a、45b；46a, 46b, as shown in figure 5, being spaced two coils between every a pair of coils It is connected by wire 47.

It is that each unit iron core 2a winds coil respectively across insulator to have a kind of technique in the prior art, then it is each every Insulator and be wound with the unit iron core 2a of coil and be combined into after iron core 2 as shown in Figure 5, then coil to 41a and 41b The end of a thread be connected, formed coil to the connecting line 47 between 41a, 41b.But the technique causes iron core 2 to have 24 the end of a thread, influence Production efficiency.

Improvement on the basis of from this is as shown in Figure 4.Specifically, for 2 units iron core 2a, 2a not linking, at it Each unit teeth portion 22a, 22a is upper continuously to wind a wire across insulator, forms 1 coil for being connected with 2 coils 4,4 To 40,6 coils are respectively prepared to 41a, 41b； 42a、42b；43a、43b；44a、44b；45a、45b；46a、46b.Then press According to the sequential combination shown in Fig. 5.But due to two of each pair unit iron core 2a, by other two unit iron core 2a intervals, example Such as, coil is to will also insert coil in 42a, 42b and 43a, 43b between 41a and 41b first 41a and second 41b 12 unit iron core 2a for being wound with coil across insulator are so combined into one and complete twined by one coil 42a and 43a The technique for being wound with the iron core 2 (i.e. stator 1) of coil is very complicated.Therefore, there is the demand for the technique for improving bit combination stator.

Utility model content

Positioning fixture according to the utility model there is provided a kind for assembling annular stator, wherein, the annular stator Including multiple stator component units, each stator component units include：Segmentation iron core；It is covered in the exhausted of each segmentation iron core Edge part；And the coil that wire is wound in each segmentation iron core across the insulating part and constituted, each segmentation iron core Including core exterior surface, iron core inner surface, relative bottom and top.The positioning fixture, which has, accommodates the annular stator Annular chamber, and be made up of at least two pairs positioning fixture units, at least two pairs positioning fixture units are circumferentially distributed, Mei Yisuo Stating positioning fixture unit includes：

Outer wall, the outer wall has inner surface；

Inwall, the inwall has outer surface；

Bottom wall, the bottom wall has upper surface；

Wherein, the upper surface of the inner surface of the outer wall, the outer surface of the inwall and the bottom wall The accommodating chamber for accommodating at least one stator component units is constituted, the accommodating chamber of each positioning fixture unit is circumferentially The annular chamber is constituted, the accommodating chamber of any two positioning fixture units in the positioning fixture unit can Accommodate the stator component units of same number.

In a preferred technique scheme, the core exterior surface has the groove that is radially recessed, and the groove is along axle To extension, there is the circumferentially positioned unit coordinated with the groove on the inner surface of the outer wall.

Have in the preferred technique scheme, on the inner surface of the outer wall and constitute unit shaft to abutting with the stator Machine direction orientation unit.

In a preferred technique scheme, the wire include the end of a thread stretched out from the bottoms of the stator component units and from The connection end that the top of the stator component units is stretched out and is connected with the coil of another stator component units, the institute of the outer wall State has axially extending the end of a thread holding tank at the position corresponding to described the end of a thread on inner surface, when the stator component units hold When being contained in the accommodating chamber, described the end of a thread is contained in the end of a thread holding tank.

In a preferred technique scheme, the circumferentially positioned unit is included from the inner surface radial direction of the outer wall inwardly Projection, axially extending raised line, the groove of the raised line and the segmentation iron core coordinate, and hold the stator component units Can be circumferentially positioned when being contained in the accommodating chamber of the positioning fixture unit.

In a preferred technique scheme, the machine direction orientation unit is included from the inner surface radial direction of the outer wall inwardly Projection, the boss of circumferentially extending, the bearing-surface of the boss support the bottom of the segmentation iron core in the axial direction, make described Stator component units being capable of axially position when being contained in the accommodating chamber of the positioning fixture unit.

In a preferred technique scheme, the end of a thread holding tank is axially extended, and its underpart is sloped radially inward, with shape It is sloping, the end for guiding described the end of a thread.

In a preferred technique scheme, the positioning fixture includes two pairs of positioning fixture units.

In a preferred technique scheme, the positioning fixture unit circumferentially combines the locating clip to form circle Tool.

In a preferred technique scheme, it is single that each described positioning fixture unit can accommodate three stator compositions Member.

In a preferred technique scheme, the positioning fixture unit includes three raised lines so that each positioning Fixture unit can accommodate three stator component units.

Compared with prior art, the coil line according to positioning fixture of the present utility model on traditional stator core is caused The quantity of head is reduced on the basis of half, can be made the bit combination of stator quickly simple according to positioning fixture of the present utility model Just, the manufacturing cost of motor is reduced.

Brief description of the drawings

Fig. 1 is the schematic diagram of electric type power steering device；

Fig. 2 is the schematic cross-section of motor；

Fig. 3 is the schematic perspective view of motor stator；

Fig. 4 is the schematic perspective view that a pair of unit iron cores of coil are wound with across insulating part；

Fig. 5 is the schematic diagram for the arrangement for showing 12 segmentation iron cores and its connecting wire；

Fig. 6 shows the sectional view of a stator component units according to annular stator of the present utility model；

Fig. 7 is shown out according to a pair of stators component units of the present utility model；

Fig. 8 a are the schematic top plan views according to positioning fixture of the present utility model, wherein, 12 stator component units institute structures Into annular stator it is combined in positioning fixture；

Fig. 8 b are the axial sectional diagrammatical view illustrations of the positioning fixture shown in Fig. 8 a；

Fig. 9 is the stereogram according to positioning fixture of the present utility model；

Figure 10 a are the schematic top plan views of the positioning fixture shown in Fig. 9；

Figure 10 b are the schematic front view of the positioning fixture shown in Fig. 9.

Reference：

700：Annular stator；

70：Stator component units；

7：Segmentation iron core；

71：Core exterior surface；72：Iron core inner surface；

73：Coil；73a：The end of a thread of coil；73b：The connection end of coil；

74：Bottom；75：Top；

76：The groove of outer surface；

77：Insulating part；

80：Positioning fixture；

8：Positioning fixture unit；

81：Outer wall；81a：The inner surface of outer wall；82：Inwall；82a：The outer surface of inwall；

83：The end of a thread holding tank；83a：The slope of holding tank；

84：Bottom wall；84a：The upper surface of bottom wall；

85：Accommodating chamber；

86：The boss of outer wall；86a：The bearing-surface of boss

87：The raised line of outer wall；

801：Annular outer wall；801a：Annular inner surface；

802：Annular inner wall；802a：Annular outer surface；

804：Annular bottom wall；804a:Annular upper surface；

805：Annular chamber.

Embodiment

Describe below in conjunction with the accompanying drawings according to embodiment of the present utility model, to illustrate technical principle of the present utility model, structure Make and technique effect.

Term is explained：

Along stator radially be referred to as " outer "；

It is referred to as " interior " along stator radial inward；

One end of the disconnection of one coil is referred to as " the end of a thread "；

One end being connected with another coil of one coil is referred to as " connection end "；

One end with wire the end of a thread of iron core is referred to as " bottom "；

One end with wire connecting ends of iron core is referred to as on " top "；

The direction of the central axis of annular stator is referred to as " axial direction "；

The circumferencial direction that will be around annular stator central axis is referred to as " circumference ".

Fig. 8 a show the annular stator 700 according to one embodiment of the present utility model.Fig. 6 schematically shows pie graph The cross section of one stator component units 70 of the annular stator 700 of 8a illustrated embodiments, to show a stator component units 70 composition.

Fig. 7 shows a pair of stator component units 70 for having wound wire, two construction phases of stator component units 70 Together, it is symmetrically placed.As shown in Figures 6 and 7, include per stator group into unit 70：Segmentation iron core 7, is covered in each segmentation iron The insulating part 77 of the part of the wound around coil of core 7, and wire be wound in each segmentation iron core 7 across the insulating part 77 and The coil 73 of composition.Segmentation iron core 7 includes：The core exterior surface 71 of segmentation iron core, the iron core inner surface 72 of segmentation iron core, segmentation The bottom 74 of iron core, the top 75 of segmentation iron core.The wire includes：The line stretched out from the bottom 74 of stator component units 70 Head 73a, and stretched out from the tops 75 of stator component units 70 and the connection that is connected with the coil of another stator component units Hold 73b.

Fig. 8 a and 8b show according to it is of the present utility model by Fig. 6 shown in stator component units 70 be combined into such as Fig. 8 a The positioning fixture 80 of shown annular stator 700.Wherein, positioning fixture 80 is identical and circumferentially to (four) constructions by least two First, second, third and fourth positioning fixture unit 8a, 8b, 8c and 8d of distribution are constituted, wherein, every a pair of positioning fixtures list Each positioning fixture in member is adjacent in the circumferential, to form positioning fixture 80 and limit the annular chamber of receiving annular stator 700 805。

Fig. 9 is the stereogram of one of positioning fixture unit 8, to show the construction of each positioning fixture unit 8.Figure 10a is the top view of the positioning fixture unit 8 shown in Fig. 9, is constructed with the part for showing each positioning fixture unit 8.Figure 10 b It is the front view corresponding to Figure 10 a of the positioning fixture unit 8 shown in Fig. 9, to show the part of each positioning fixture unit 8 Construction.

As shown in Fig. 9,10a and 10b, positioning fixture unit 8 includes：Outer wall 81, inwall 82 is connected to outer wall 81 and inwall Bottom wall 84 between 82 bottom.Outer wall 81 has inner surface 81a radially inwardly, and inwall 82 has radially Outer surface 82a outwardly, bottom wall 84 has upper surface 84a in axial direction upward.Positioning fixture unit 8 is included by outer wall 81 Inner surface 81a, the outer surface 82a of inwall 82 and bottom wall 84 receiving at least one stator compositions for constituting of upper surface 84a it is single The accommodating chamber 85 of member 70.

As shown in figs. 8 a and 8b, show to be combined by first to fourth positioning fixture unit 8a, 8b, 8c and 8d in figure and formed Annular positioning fixture 80, each of first to fourth positioning fixture unit 8a, 8b, 8c and 8d is by such as Figure 10 a and 10b Shown positioning fixture unit 8 is constituted.Four outer walls 81 formation annular outer wall 801 of four positioning fixture units 8, four inwalls 82 form annular inner wall 802, and four formation annular bottom walls 804 of bottom wall 84, four accommodating chambers 85 are formed in annular chambers 805, four Surface 81a formation annular inner surfaces 801a, four outer surface 82a formation annular inner surfaces 802a, four upper surface 84a formation rings Shape upper surface 804a.Each accommodating chamber 85 of two positioning fixture units in every a pair of positioning fixtures unit can accommodate identical Several stator component units 70, for example each accommodating chamber 85 can accommodate three stator component units 70 in the present embodiment.

There is the groove 76 being radially recessed, groove 76 is axially extended, positioning fixture unit 8 in core exterior surface 71 Outer wall 81 inner surface 81a on have with the core exterior surface 71 of segmentation iron core 7 groove 76 coordinate circumferentially positioned list Member.As shown in Fig. 9,10a and 10b, according in one embodiment of the present utility model, circumferentially positioned unit is included from locating clip Have the inner surface 81a radial inwards projection of the outer wall 81 of unit 8, axially extending raised line 87.In the embodiment shown in Figure 10 a In, each positioning fixture unit 8 can accommodate three stator component units 70, therefore, correspondingly, the inner surface 81a of outer wall 81 Upper to have three raised lines 87, each of which corresponds to the recessed of the segmentation iron core 7 of each corresponding stator component units 70 in position Groove 76, and coordinate with corresponding groove 76 so that three segmentation iron cores 7 in each positioning fixture unit 8 are contained in positioning It is circumferentially positioned in the accommodating chamber 85 of fixture unit 8.

Have on the inner surface of the outer wall 81 of positioning fixture unit 8 on 81a and constitute unit shaft to the axial direction abutted with stator Positioning unit.As shown in Fig. 9,10a and 10b, according in one embodiment of the present utility model, machine direction orientation unit include from The inner surface 81a radial inwards projection of the outer wall 81 of positioning fixture unit 8, the boss 86 of circumferentially extending, the bearing-surface of boss 86 86a supports the bottom 74 of segmentation iron core 7 in the axial direction, stator component units 70 is contained in the accommodating chamber of positioning fixture unit 8 Being capable of axially position when in 85.

As shown in fig. 7, wire includes the end of a thread 73a stretched out from the bottom 74 of stator component units 70 (right side in Fig. 7) Stretch out and be connected with the coil 73 of another stator component units 70 (left side in Fig. 7) with the top 75 from stator component units 70 Connection end 73b.Have on the inner surface 81a of the outer wall 81 of positioning fixture unit 8 at the position corresponding to the end of a thread 73a and axially prolong The end of a thread holding tank 83 stretched, when stator component units 70 are contained in accommodating chamber 85, the end of a thread 73a is contained in the end of a thread holding tank 83 In.Further, to avoid bottom fold or bending of the end of a thread 73a end in the end of a thread holding tank 83, in the end of a thread holding tank The one slope 83a for tilting extension axially downward radially inward is formed on 83 bottom, to guide the end of a thread 73a end direction to hold Receive groove 85 bottom extension.

According in one embodiment of the present utility model, positioning fixture 80 includes two pairs of positioning fixture units.Each pair is determined Two positioning fixtures in position fixture unit are circumferentially-adjacent.As shown in Figure 8 a, positioning fixture 80 is included in the of the right side of diagram First positioning fixture unit 8a of a pair of positioning fixture units and the second positioning fixture unit 8b, second in the left side of diagram To the 3rd positioning fixture unit 8c and the 4th positioning fixture unit 8d of positioning fixture unit.

In the operating process for carrying out positioning assembling annular stator 700, a pair of stators as shown in Figure 7 are constituted into locating clip Have a stator component units 70 on the right side of one in unit, such as Fig. 7 and overturn 180 ° so that its court of core exterior surface 71 On, iron core inner surface 72 is down.Stator component units are arranged side by side as three pairs so that the left side in three pairs of stator component units 70 Three stator component units 70a1,70a2,70a3 insert the first positioning fixture unit 8a, three pairs of stator component units 70 In right side three stator component units 70b1,70b2,70b3 insert the second positioning fixture unit 8b, same first locating clip Have unit 8a and the second positioning fixture unit 8b placements inverting each other.For example, the first positioning fixture unit 8a inwall radially towards Interior, as shown in Figure 8 a, then the second positioning fixture unit 8b inwall is radially.After insertion stator component units, make the Two positioning fixture unit 8b overturn 180 ° so that the second positioning fixture unit 8b inwall also radial inward, then side-foldable Second positioning fixture unit 8b is to the first positioning fixture unit 8a side to position as shown in Figure 8 a.The 3rd of second couple determines Position fixture unit 8c and the 4th positioning fixture unit 8d are also so operated.By two pairs of positioning fixture units 8 by 12 stator packs A complete annular stator 700 is combined into unit 70.

Each feature in above example can also can make any group in the reasonable scope according to the present embodiment principle Close, this combination is also fallen within the scope of the present invention.

The implementation of above-mentioned example is illustrated in the technical scheme for solving the technical problems to be solved in the utility model One exemplary embodiment.Under the example of the embodiment, other equivalent and similar means for meeting the utility model principle all belong to In the scope that the utility model is protected.Basic inventive principle of the present utility model is, by using two pairs of four positioning fixtures Unit is combined into the positioning fixture of a complete stator of assembling, and each positioning fixture unit accommodates three stator component units, three The stator component units of stator component units and opposite side to the side in stator component units are reversely with each other to be placed, and is inserted respectively Enter be also placement reversely with each other a pair of positioning fixture units in, upset and fold a pair of positioning fixture units in one, shape Circularize the half in positioning fixture.On the basis of this general principle, constitute positioning fixture positioning fixture unit quantity and The quantity of open ended stator component units can change according to actual needs in each positioning fixture unit.

Claims (11)

1. one kind is used for the positioning fixture (80) for assembling annular stator (700), wherein,

The annular stator (700) includes multiple stator component units (70), and each stator component units (70) include：Segmentation Iron core (7)；It is covered in the insulating part (77) of each segmentation iron core (7)；And wire is wound in across the insulating part (77) Each segmentation iron core (7) and constitute coil (73),

Each segmentation iron core (7) includes core exterior surface (71), iron core inner surface (72), relative bottom (74) and top (75),

Characterized in that, the positioning fixture (80) has the annular chamber (805) for accommodating the annular stator (700), and by extremely Few two pairs of positioning fixture units (8) are constituted, and at least two pairs positioning fixture units (8) are circumferentially distributed, each positioning Fixture unit (8) includes：

Outer wall (81), the outer wall (81) has inner surface (81a)；

Inwall (82), the inwall (82) has outer surface (82a)；

Bottom wall (84), the bottom wall (84) has upper surface (84a),

Wherein, the inner surface (81a) of the outer wall (81), the outer surface (82a) of the inwall (82) and the bottom The upper surface (84a) of wall (84) constitutes the accommodating chamber (85) for accommodating at least one stator component units (70),

The accommodating chamber (85) of each positioning fixture unit circumferentially constitutes the annular chamber (805),

The accommodating chamber (85) of any two positioning fixture units in the positioning fixture unit can accommodate phase With the stator component units (70) of number.

2. positioning fixture as claimed in claim 1, wherein, the core exterior surface (71) has the groove being radially recessed (76), the groove (76) axially extends, it is characterised in that

There is the circumferentially positioned unit coordinated with the groove (76) on the inner surface (81a) of the outer wall (81).

3. positioning fixture as claimed in claim 1, it is characterised in that

There is the axially position list axially abutted with the stator component units (70) on the inner surface (81a) of the outer wall (81) Member.

4. positioning fixture as claimed in claim 1, wherein, the wire is included from the bottom of the stator component units (70) (74) the end of a thread (73a) for stretching out and stretched out from the tops (75) of the stator component units (70) and with another stator component units Coil connection connection end (73b), it is characterised in that

Have on the inner surface (81a) of the outer wall (81) at the position corresponding to described the end of a thread (73a) axially extending The end of a thread holding tank (83), when the stator component units (70) are contained in the accommodating chamber (85), the end of a thread (73a) is held It is contained in the end of a thread holding tank (83).

5. positioning fixture as claimed in claim 2, it is characterised in that the circumferentially positioned unit is included from the outer wall (81) The inner surface (81a) radial inward projection, axially extending raised line (87), the raised line (87) and the segmentation iron core (7) the groove (76) coordinates, and the stator component units (70) is contained in the appearance of the positioning fixture unit (8) Can be circumferentially positioned when receiving in chamber (85).

6. positioning fixture as claimed in claim 3, it is characterised in that the machine direction orientation unit is included from the outer wall (81) The inner surface (81a) radial inward projection, the boss (86) of circumferentially extending, the bearing-surface (86a) of the boss (86) exists The bottom (74) of the segmentation iron core (7) is supported on axial direction, the stator component units (70) is contained in the positioning Being capable of axially position when in the accommodating chamber (85) of fixture unit (8).

7. positioning fixture as claimed in claim 4, it is characterised in that the end of a thread holding tank (83) axially extends, under it Portion is sloped radially inward, to form slope (83a), the end for guiding described the end of a thread (73a).

8. the positioning fixture as described in any one in claim 1-7, it is characterised in that positioning fixture (80) bag Include two pairs of positioning fixture units (8).

9. the positioning fixture as described in any one in claim 1-7, it is characterised in that the positioning fixture unit (8) Circumferentially combination forms the circular positioning fixture (80).

10. positioning fixture as claimed in claim 1, each described positioning fixture unit (8) can accommodate three it is described fixed Sub- component units (70).

11. positioning fixture as claimed in claim 5, the positioning fixture unit includes three raised lines (87) so that every Positioning fixture unit described in one can accommodate three stator component units (70).