CN1119362A

CN1119362A - Electric motor

Info

Publication number: CN1119362A
Application number: CN95104025A
Authority: CN
Inventors: 木枝钢希; 竹腰幸典; 铃木良仁; 铃村幸久; 宫川秀明
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1994-04-12
Filing date: 1995-04-07
Publication date: 1996-03-27
Anticipated expiration: 2015-04-07
Also published as: KR0173163B1; KR950030437A; CN1076533C; GB2288918B; SG54176A1; HK1010075A1; TW256961B; GB9414792D0; JPH07288941A; GB2288918A

Abstract

The object of the invention is to provide a electric motor in which a coil end is formed by mounting an insulating cover, in which the circumferential length of a coil is short and which can be assembled by a machine. Insulation parts 26 are formed on the upper and lower edge 22a and slots 23 of a stator core which is formed by laminating iron cores, and a coil 42 is inserted into the slots 23. Then, an upper coil cover 31 whose internal cross section is formed to be the molded shape of a coil end 43 is mounted from the upper part, and a lower coil cover 40 is mounted from the lower part. Then, a lead wire 52 is connected to a terminal 57 or the like which is installed on the upper coil cover 31.

Description

Motor

The present invention relates to a kind of motor that has around the stator core of coil.

Figure 15 represents for example by the real public clear 62-37407 number disclosed prior motor of Japanese patent gazette, among the figure, the 1st, a plurality of silicon steel sheets are the stacked and stator core that forms, circumference has a plurality of grooves 2 within it, in each bar groove 2, insert insulating paper 3, and by this insulating paper 3 coil 4 of packing into.5 and 6 is a pair of coil housings, be used to cover end winding 4a at two of said stator iron core 1 side-prominent coils 4,4b, this coil housing 5 and 6 is formed by insulating material such as plastics, utilize ring-type end plate 11,12 to form respectively with inner cylinder portion 7,8 and urceolus portion 9,10 distolateral linking into an integrated entity is formed with the space that holds coil 13 of base ring shape between two portions.

9a, 10a are the planes that the compartment of terrain forms on the outer peripheral face of the urceolus portion 9,10 of above-mentioned coil housing 5,6; The 15th, be equivalent to the engagement pawl of joint portion, the plane 9a that forms with compartment of terrain in the urceolus portion 9 of above-mentioned coil housing 5 is integral highlightedly and is being provided with.The 16th, be equivalent to a plurality of frame shape braces of combined portion and above-mentioned each engagement pawl 15 and extend with the plane 10a of the urceolus portion 10 of above-mentioned coil housing 6 accordingly with being integral and be provided with.

Prior motor constitutes as described above, end winding 4a with coil 4,4b is encased in the space that holds coil 13 of coil housing 5,6, and with two coil housings 5,6 cover on the both sides of stator core 1, urceolus portion 9,10 is combined, simultaneously with the outer peripheral face of stator core 1, the front end of inner cylinder portion 7,8 is contacted with the end face of stator core 1.And, make above-mentioned frame shape brace 16 hook engagement pawl 15, two coil housings 5,6 are interconnected.Then, utilizing coil housing 5,6 to cover end winding 4a, under the state of 4b, its integral body for example is being immersed in to wait in the varnish groove carries out dipping lacquer and handle.

In the prior motor of said structure, there are the following problems:

1. the coil girth is increased, and the coil consumption increases, thereby manufacturing cost is increased.

Owing to be, insert coils 4 by this insulating paper 3, thereby insulating paper 3 parts must make the coil girth increase, thereby fee of material and assembling expense are increased in insulating paper 3 insertion grooves 2.

2. owing to used insulating paper 3, thereby make cost up.

3. characteristic is relatively poor.

Because the coil girth is longer, magnetic density increases, and efficient reduces, thereby characteristics such as rotation, torque are degenerated.

4. handle owing to carrying out dipping lacquer, thereby assembling can not realize mechanization.

After two coil housings 5,6 are interconnected, be immersed in to wait in the varnish groove and carry out the dipping lacquer processing, thereby can not carry out mechanization ground and assemble.

The present invention makes in order to address the above problem, and purpose provides a kind of motor, and this motor has following advantage:

1. length, coil consumption are few coil week, thereby can reduce cost;

2. can be without insulating paper;

3. characteristic is good;

4. can not carry out dipping lacquer handles;

5. can realize mechanization of assembling etc.

Motor of the present invention has stator core, coil and coil housing; Stator core is provided with a plurality of grooves, and coil is by in the groove of this stator core, and coil housing is made of tubular, and the interior perimembranous and the peripheral part of the end winding that can cover this coil arranged; It is with insulating material with the groove of said stator iron core and end face insulation, will fuse electric wire certainly in groove, be made into inner wall shape that roughly identical with end winding coil housing covers end winding.

In addition, make the upper and lower end face of stator core outstanding from the side,, the engagement pawl that combines with this joint portion is being set on coil housing as the joint portion of coil housing.

Form with lamination forms stator core, is provided with the hole that connects along stack direction in this stator core.

Periphery in stator core saliently is provided with cylindrical portion, is provided with otch on this cylindrical portion.

The peristome that faces toward with groove that on the interior week of coil housing, is provided with spill.

In the application's the 1st invention, with constitute coil fuse certainly electric wire around groove and end face be insulated insulated with material the groove of stator core in, the end winding of this coil is shaped in the inboard of coil housing, by coil housing is pressed in the stator core coil is clamped simultaneously, thus coil housing is assembled in the stator core.

In the 2nd invention, combine with the joint portion of giving prominence to by the engagement pawl that makes coil housing from the upper and lower end face of stator core, just coil housing can be assembled in the stator core.

In the 3rd invention, when utilizing insulating material to make stator core form insulation, can be in an opposite effluent hand-hole of cast gate as the resin of insulating material, insulating material is also to cast gate one side flow simultaneously.

In the 4th invention, insert from otch owing to will be used to compress the anchor clamps of the end winding on the cylindrical portion, thereby can be with the coil housing fit in end winding direction extruding to the inside.

In the 5th invention, insert from peristome owing to will be used to compress the anchor clamps of the end winding on the cylindrical portion, thereby can be in end winding direction extruding laterally, with the coil housing fit on.

Fig. 1 is the assembling oblique view of the motor of expression one embodiment of the invention,

Fig. 2 is the assembling oblique view of the motor of expression one embodiment of the invention,

Fig. 3 is the plane graph of the stator core of expression one embodiment of the invention,

Fig. 4 be the expression one embodiment of the invention the profile of stator core,

Fig. 5 is the plane graph of the stator core after the insulating material of expression one embodiment of the invention is shaped.

Fig. 6 is the profile of the stator core after the insulating material of expression one embodiment of the invention is shaped,

Fig. 7 is the assembling view of the stator core after the insulating cover of expression one embodiment of the invention assembles,

Fig. 8 is the assembling section of the stator core after the coil housing of expression one embodiment of the invention assembles,

Fig. 9 is the assembling bottom view of the stator core after the coil housing of expression one embodiment of the invention assembles,

Figure 10 is the expression one embodiment of the invention, uses the assembled part profile of the stator core of forelock,

Figure 11 is the expression one embodiment of the invention, and a is a plane graph of going up coil housing, and b is the profile along part shown in the arrow portion,

Figure 12 is the side view of the half-sectional view that comprises coil housing of expression one embodiment of the invention,

Figure 13 is the plane graph of the lower coil cover of expression one embodiment of the invention,

Figure 14 is the side view of the half-sectional view that comprises the lower coil cover of expression one embodiment of the invention,

Figure 15 is the exploded perspective view of expression prior motor.

Below, with reference to accompanying drawing embodiments of the invention are described.

Fig. 1～Figure 14 is the figure of expression one embodiment of the present of invention, the 20th, stator core, be an electric steel plate that is rolled into ring-type, on interior all sides 21, cut apart stamping-out with High-Speed Automatic press (not shown) and go out, utilize riveted joint lamination ground formation appointed thickness simultaneously with the described rotor in back.The 22nd, the joint portion makes the upper and lower end face 22a of said stator iron core 20 outwards give prominence to from the side and form when it is lamination, can be provided with a plurality of in combination with the end of the described coil housing in back.This joint portion is a (not shown) in the metal pattern of High-Speed Automatic press, for example will by thickness of slab be 0.35mm or 0.5mm constitute plate lamination unshakable in one's determination the time, stamping-out with the drift in the not shown metal pattern, be made into two kinds of shapes, with the upper and lower end face constitute teat more than 1, automatically form by the management of laminated thickness or lamination.The 23rd, groove equally spaced is provided with a plurality ofly to peripheral direction from interior all sides 21 of said stator iron core 20, between this groove 23 pole piece 24 is set.

The 25th, the hole, in stator core 20, than 23 more outer weeks of groove, be provided with a plurality ofly along stack direction, these holes are also the same with groove 23 with equally spaced connecting, and form stator core 20 and side by side form.The 26th, utilize as the insulation division of injection molded method setting, be used to cover said stator iron core 20, be shaped and be fixed on above-mentioned groove 23 and the upper and lower end face 22a.The 27th, the coil protect circle, the cylindrical portion 28 that protrudes chimney-like in the periphery of stator core 20 by the insulation division 26 with stator core 20 constitutes with being integral, is provided with a plurality of otch 29 at its front end.This coil protect circle is in order to prevent that the described coil in back from unclamping around back coil in the groove 23 of stator core 20.In addition, above-mentioned otch 29 is the spaces of when being assembled to the described coil housing in back in the stator core 20, with the coil compressing fixture coil being pressed to stator core 20 centers one side.

The 30th, coil housing, the 31st, the last coil housing that terminal board is used forms one side of above-mentioned coil housing 30, forms the garden plate-like of the upper surface 22a that can cover said stator iron core 20 with the resin of insulating properties, by the injection molded method.32 are provided in a side of the protuberance on the coil housing 31, and as shown in figure 11, its front end is bent into L shaped, in order to the fixing described terminal in back.33 are provided in a side of the pin on the coil housing 31 on this, are used for fixing the described jumper of not shown temperature fusible link and back.34 is first ditches, surrounds interior all sides ground of going up coil housing 31 with sidewall 35 and is being provided with, for the described harness wiring usefulness in back.36 are provided in a side of the peristome on the internal perisporium of coil housing 31, and width is identical with groove 23, is provided with a plurality of peristomes 36 on internal perisporium.In the time of on being assembled to stator core 20 they and groove 23 vis-a-vis, these peristomes are in the time will going up coil housing 31 and install in the stator core 20, utilize the coil compressing fixture coil to be pressed to the space in the outside of stator core 20.34a is the 2nd ditch, is located at the periphery top of coil housing 31, and width is greater than enamelled wire line footpath, and is provided with a plurality ofly, is used for coil location.

The 37th, stage portion is located at the internal perisporium bottom of coil housing 31, with the described wedge in concave surface extruding back, is fixed in the stator core 20.The 38th, brace, it is that periphery wall from last coil housing 31 extends downwards, front end has and is bent into L shaped engagement pawl 39, equally spaced is provided with a plurality of braces 38.The inside of above-mentioned last coil housing 31 forms the shape that the section that the described end winding in back is shaped is " U " font.The 40th, the lower coil cover, it is to form coil housing 30 another sides, with the resin of insulating properties, formed discoidly by the injection molded method, is used to cover the lower surface of said stator iron core 20.This lower coil cover 40 is the same with last coil housing 31, innerly forms the shape that section is " U " font.The 41st, the hole equally spaced is provided with a plurality ofly on lower coil cover 40, is used to confirm the coil situation.

In addition, lower coil cover 40 is the same with last coil housing 31, has opening 36, brace 38 and stage portion 37.The 42nd, coil, the enamelled wire of the material of fusing property constitutes by for example having applied certainly, around groove 23 and end face be insulated insulated with material the groove 23 of stator core 20 in, the end winding of this coil is formed in the inboard of coil housing 30, by with coil housing 30 to stator core 20 jam-packeds, clamp coil 42, simultaneously coil housing 30 is assembled in the stator core 20.The 43rd, end winding, the 44th, be inserted into the wedge in the groove 23, when being assembled to coil housing 30 in the stator core 20, on the stage portion 37 of each cover 31,40, be fixed from above-below direction.45 are provided in a side of the rotor in the said stator unshakable in one's determination 20, and rotating shaft 46 is passed and be in the central chimeric.The 47th, the bearing chimeric with this rotating shaft 46 for example is made of ball bearing.

The 48th, shell, the 49th, form the machine frame on one side of this shell, its central authorities are provided with the shaft hole (not shown), are provided with commissura 50 in its all end.The 51st, form the carriage of the another side of above-mentioned shell 48, be provided with commissura 50 in its all end, be provided with wire guide 52 in the inboard of this commissura 50.The 53rd, the power supply lead for example is made of the heat-resisting nylon electric wire.The 54th, protect the insulated tube of this lead, with having flexible insulating material, for example polyethylene constitutes.The 55th, the wire sleeve chimeric with above-mentioned wire guide 52 of this insulated tube break-through is made of for example resin.The 56th, jumper couples together the terminal 57 that is fixed between the protuberance 32 of coil housing 31 each other, is made of for example solid conductor.The 58th, the input-output line that forms by the top and the terminal of coil 42.

In the motor of said structure, its assembling is that the electric steel plate punching out that utilizes High-Speed Automatic press will be rolled into ring-type becomes stator core 20 and rotor 45, and lamination is an appointed thickness, and utilizes method such as riveted joint that lamination is fixed.Then, clean stator core 20, remove oil content, and be heated to about 150 ℃ with heat medium with cleaning fluid, and, utilize the injection molding machine (not shown) in upper and lower end face 22a, groove 23, be integrally formed into insulation division 26 with insulating material.After the shaping, remove the burr of separating part, inner circumferential surface is coated rust inhibitor.

Then, with volume fall formula coil winding machine (not shown) with coil 42 on coil winding machine anchor clamps (not shown), in these coil 42 insertion grooves 23, simultaneously with in wedge 44 insertion grooves 23.Then, carrying out the middle of end winding 43 is shaped.After the shaping, the stator core 20 that will have coil 42 installs on the not shown assembling frame, and the input-output line 58 of coil 42 is temporary fixed, utilizes joint portion 22 and combining of engagement pawl 39 will go up coil housing 31 and is fixed in the stator core 20.And, terminal 57 is assembled on the coil housing 31, above-mentioned input-output line 58 is connected with terminal 57 and fixing after, the end of input-output line 58 is cut.

With lower coil cover 40 being assembled on the lower surface of stator core 20 with fit on coil housing 31 the same methods.And, join with contact (not shown) and terminal 57 by making electric checking, automatically carry out electric checking.Then, be added to by voltage on the assigned address of terminal 57,, utilize the heat that produces to melt from melting varnish attached to enamelled wire is lip-deep to coil 42 energisings with appointment, thus coil 42 is fixing.

Then, the stator core 20 that coil housing 30 is housed is pressed in the machine frame 49, the rotor 45 that bearing 47 is housed is inserted in the stator core 20.After not shown packing ring being assembled in the rotating shaft 46 of rotor 45, carry out various inspections.Then, jumper 56, temperature fusible link are installed on the coil housing 1, will contain power supply and be connected with terminal 57 with the lead of lead 53.And, each live part is insulated with the putty (not shown).Then, carriage 51 is assembled in the stator core 20, by commissura 50 riveted joints, that machine frame 49 is fixing with carriage 51 combinations with machine frame 49.Then, lead 53 is passed insulated tube 54,, be assembled on the carriage 51 simultaneously with wire sleeve 55.

In above-mentioned assembling process, owing to be by end face and groove 23 insulation with stator core 20, around the last electric wire that fuses certainly, just upper and lower coil housing 31,40 is assembled in the stator core 20, the operations such as shaping of defeasible groove adjustment simultaneously, dipping lacquer processing and end winding 43, thereby can shorten the girth of coil 42, make coil 42 fixing easily, finally can realize the mechanization of assembling.Utilize the joint portion 22 of stator core 20 and the engagement pawl 39 of coil housing 30 again, thereby can easily coil housing 30 be assembled in the stator core 20, simultaneously, can simplify the fixed structure of coil housing 30.In addition, utilized the hole 25 of stator core 20, the resin of insulating material is more effective along the Surface runoff in the groove 23 of stator core 20 to the mobile ratio of the opposite side of cast gate, can improve liquidity.And, can under low-pressure, be shaped, after the shaping burr can not take place, can carry out thin layer and be shaped.

By the 1st ditch 34 and protuberance 32 are set on last coil housing 31, can carry out the location of lead 53 and terminal 57, thereby realize mechanization easily.In addition, by the 2nd ditch 34a is set, just can easily carries out the location of enamelled wire terminal, thereby realize mechanization easily.In addition, utilize the step 37 of each coil housing 31,40 can clamping wedge 44.

Because the present invention adopts said structure, so, following effect had.

In the 1st invention, owing to by the inboard at coil housing end turn is shaped, simultaneously Be pressed in the stator core, can carry out clamping and the shaping of coil, so, can the realization group The mechanization of dress.

In the 2nd invention, utilize the combination of joint portion and engagement pawl, coil housing can be assembled To stator core, thereby the simple shape ground of engagement pawl is consisted of.

In the 3rd invention, as the good fluidity of resin in the hole of insulating materials, thus can Be shaped to carry out uniform thin layer in stator core.

In the 4th invention, assembling coil in the time of can be from the periphery coil pressing of end turn Cover, thus can prevent that the outer periderm coil housing of end turn from blocking.

In the 5th invention, assembling coil in the time of can be from interior all coil pressings of end turn Cover, thus can prevent that the periderm coil housing blocks in the end turn.

Claims

1. motor, it has stator core, coil and coil housing; Stator core is provided with a plurality of grooves, and coil is by in the groove of this stator core; Coil housing is made of tubular, interior perimembranous and peripheral part that the end winding that can cover this coil is arranged, it is characterized in that, it is with groove and the end face insulation of insulating material with the said stator iron core, to fuse electric wire certainly in groove, and be made into roughly identical coil housing with inner wall shape end winding is covered with end winding.

2. motor as claimed in claim 1 is characterized in that: make the upper and lower end face of stator core outstanding from the side, as the joint portion of coil housing, the engagement pawl that combines with this joint portion is being set on coil housing.

3. motor as claimed in claim 1 is characterized in that: form stator core with the lamination form, be provided with along the hole of stack direction break-through in this stator core.

4. motor as claimed in claim 1 is characterized in that: the periphery upper process of stator core cylindrical portion is set, on this cylindrical portion, otch is being set.

5. motor as claimed in claim 1 is characterized in that: the peristome that faces toward with groove that spill is set on the interior week of coil housing.