JPH09308163A - Motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the attachment work of a wiring board without narrowing the sectional area of the magnetic circuit of the iron core of a stator by fixing the wiring board to connect the winding of a stator to an insulator by means of an engaging hook to engage with the engaging recess of the insulator. SOLUTION: A wiring board 23 is placed on one side of the iron core 5 of a stator, and the hook 26 of the mounting arm 27 provided at the rear of the wiring board 23 is engaged with the engaging recess 28 of the collar 14 of an insulator 6 (12), whereby the wiring board 23 is fixed to the insulator 6 (12). This way, the winding end of the stator winding 16 is set and fixed to the connecting metal fitting of the wiring board 23 fixed to the insulator 6 (12), whereby the stator winding 16 is connected. Next, the stator winding 16 is covered for insulation with insulating resin 35, and the stator iron core 5 is set and fixed to a frame 2. Accordingly, since it is fixed by engaging the hook 26 provided at the wiring board 23 with the engaging recess 28 of the insulator 6 (12), the attachment of the wiring board 23 becomes simple.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor provided with a connecting plate for connecting winding ends of a stator winding.

[0002]

2. Description of the Related Art Conventionally, an electric motor provided with a connecting plate for connecting winding end portions of a stator winding is constructed as shown in FIG. In the figure, reference numeral 40 denotes a stator core, which is an inner arc portion 41.
b, an outer arc portion 41a, and a split iron core 41 having a connecting winding portion connecting these arc portions are arranged in a ring shape, and a convex portion 41c protruding in the circumferential direction on one end surface of the outer arc portion 41a.
Are fitted in a recess 41d provided on the other end surface of the outer arc portion 41a of the adjacent core segments 41. An insulator is provided at the connecting winding portion of the split iron core 41, and a stator winding 42 is wound around the insulator. Reference numeral 43 denotes a wire connecting plate attached to a column 44 fixed to the end surface of the stator core 40. A plurality of through holes 45 are provided on the plate surface of the wire connecting plate, and printed wiring 46 is provided between the through holes 45 to form the stator. The winding end of the winding 42 is inserted into the through hole 45 to connect the winding end of the stator winding 42.

[0003]

However, in the prior art, since holes are formed in the end surface of the stator core 40 for attaching the support columns 44, the cross-sectional area of the magnetic circuit of the stator core is narrowed. The installation work was complicated. An object of the present invention is to simplify the work of attaching the connecting plate without reducing the cross-sectional area of the magnetic circuit of the stator core.

[0004]

In order to solve the above problems, the present invention provides an outer arc portion, an inner arc portion, and a connecting winding portion for connecting these arc portions, and a stator is provided in the connecting winding portion. In a motor provided with a split iron core around which windings are wound and arranged in an annular shape, and a connecting plate for connecting the winding ends of the stator winding, a stator winding is attached to the connecting winding portion of the stator core. An insulator to be wound, an engagement recess provided in a flange portion of the insulator, a wire connecting plate that is made of an insulating material and has a conductor embedded in the plate to connect the winding ends of the stator winding, and the wire connecting plate. And a mounting arm having an engaging hook for engaging with the engaging recess of the insulator.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a cross-sectional view of the upper half of the electric motor, FIG. 2 is a perspective view of the structure of the split iron core and the insulator, FIG. FIG. 5 is a perspective view, and FIG. 5 is a cross-sectional view of an essential part of a structure in which a wiring plate is attached to an insulator. In the figure, 1 is an electric motor, 2 is a frame of the electric motor 1, 3 is a load side bracket attached to a load side end of the frame 2, 4
Is a counter-load side bracket attached to the counter-load side end of the frame 2. Reference numeral 5 denotes a stator core attached to the inner peripheral surface of the frame 2, and as shown in FIG. 2, divided iron cores 9 composed of an outer arc portion 6, an inner arc portion 7 and a connecting winding portion 8 are arranged in the circumferential direction, A projecting portion 10 protruding in the circumferential direction is provided on one end surface of the outer arc portion 6 of the split iron core 9, and the projecting portion 10 is fitted into a recess 11 provided on the other end surface of the adjacent split iron cores 9. I am configuring. Reference numeral 12 is an insulator, which is a cylindrical body portion 1.
3 and collar portions 14 and 15 formed at both ends of the cylindrical body portion 13. Cylindrical body portion 1 of the insulator 12
A stator winding 16 is wound around 3 and the one flange portion 14 is provided.
A rectangular parallelepiped projection 17 protruding laterally is provided on the axial end surface of the. Grooves 18 and 19 for sandwiching the winding ends of the stator winding 16 are provided on both sides of the protrusion 17. An engaging arm 21 having a hook portion 20 is provided on a side surface in the circumferential direction of the flange portion 14, and a groove 22 with which the hook portion 20 of the engaging arm 21 is engaged is provided on a side surface of the flange portion 14. Has been. Reference numeral 23 denotes a connecting plate which is provided at the axial end of the stator winding 16 and connects the winding ends. As shown in FIG. 4, the connecting plate 23 is formed in a disc shape and has a semicircular recess 24 on the inner and outer circumferences. A connection fitting 25 is provided in the vicinity of the recess 24 and is fixed to the recess 24. A conductor (not shown) for connecting the winding ends of the stator winding 16 is embedded in the connection plate to connect the stator winding 16. A mounting arm 27 having a hook portion 26 is provided on the back surface of the connection plate 23, and the collar portion 1 of the insulator 6 is provided.
4 is configured to be engaged with the engagement recess 28 provided in No. 4. 29 is a rotor provided on a rotary shaft 31 supported by bearings 30 of the load side bracket 3 and the anti-load side bracket 4, 32 is a pedestal fixed to the frame 2, 33 is a receptacle, and the lead wire 34 is used to Connection board 23
Connected to Reference numeral 35 is an insulating resin that covers the stator winding 16. The stator core having such a structure is assembled as follows. First, the insulator 12 is attached to the connecting winding portion 8 of the split iron core 9. Next, the stator winding 16 is wound around the cylindrical body portion 13 of the insulator 12. Further, the winding end of the stator winding 16 is fitted into the groove 18 provided in the collar portion 14 of the insulator 12, and
The winding end is wound around the protrusion 17 by 1/2 turn. afterwards,
The winding ends of the stator windings 16 are fixed to the insulator 12 by fitting the winding ends in the grooves 19. In this way, the split cores 9 wound with the stator windings 16 are arranged in an annular shape, and the projections 10 of the split cores 9 are fitted into the recesses 11 of the adjacent split cores 9 to fix the split cores 9 together. , The engaging arms 21 of the insulator 12 are engaged with the grooves 22 of the insulators 12 of the adjacent iron cores to fix the insulators 12 to each other. Next, the connection plate 23 is placed on one side of the stator core 5, and the hook portion 26 of the mounting arm 27 provided on the back surface of the connection plate 23 is engaged with the engagement recess 28 of the flange portion 14 of the insulator 12.
To fix the connection plate 23 to the insulator 12. The wiring board 2 fixed to the insulator 12 in this way
The winding end of the stator winding 16 is fitted and fixed to the connecting fitting 25 of No. 3, and the stator winding 16 is connected. After that, the stator winding 16 is covered with an insulating resin 35 to insulate the stator winding 16, and the stator core 5 configured in this manner is fitted into the frame 2 and fixed. Therefore, the hook portion 26 provided on the wire connection plate 23 is engaged and fixed to the engagement recess 28 of the insulator 12, so that the wire connection plate 23 can be easily attached.

[0006]

As described above, according to the present invention, the connection plate 23 for connecting the stator winding 16 is connected to the insulator 12.
Since it is fixed to, the work of attaching the connecting plate can be simplified without reducing the cross-sectional area of the magnetic circuit of the stator core.

[Brief description of drawings]

FIG. 1 is a sectional view of an upper half of an electric motor showing an embodiment of the present invention.

FIG. 2 is a perspective view of a core segment and an insulator showing an embodiment of the present invention.

FIG. 3 is a perspective view of a main part of a structure in which an insulator is attached to a stator core showing an embodiment of the present invention.

FIG. 4 is a perspective view of a connection plate showing an embodiment of the present invention.

FIG. 5 is a cross-sectional view of an essential part of a structure in which a wiring board is attached to an insulator showing an embodiment of the present invention.

FIG. 6 is a perspective view of a stator core to which a connection plate is attached as a conventional example.

[Explanation of symbols]

1 electric motor, 2 frame, 3 load side bracket, 4 anti-load side bracket, 5 stator core, 6
Outer arc part 7 Inner arc part, 8 Connection winding part, 9
Split cores, 10 convex portions, 11 concave portions, 12 insulators, 13 cylindrical body portions, 14 collar portions, 15 collar portions, 16 stator windings, 17 protrusions, 18 grooves,
19 groove, 20 hook part, 21 engaging arm, 22
Groove, 23 connection plate, 24 recess, 25 connection fitting,
26 hooks, 27 mounting arms, 28 engaging recesses,
29 rotor, 30 bearing, 31 rotating shaft, 32
Pedestal, 33 receptacle

Claims (1)

[Claims] 1. An outer circular arc portion, an inner circular arc portion, and a connecting winding portion connecting these circular arc portions are provided, and a split iron core around which a stator winding is wound is arranged in an annular shape, and the stator is provided. In an electric motor provided with a connecting plate for connecting winding end portions of windings, an insulator for mounting a stator winding on a connecting winding portion of the stator core and an engagement provided on a collar portion of the insulator. A recess, a connecting plate that is made of an insulating material and has a conductor embedded in the plate and connects the winding ends of the stator winding, and an engagement provided on the back surface of the connecting plate that engages with the engagement recess of the insulator. An electric motor having a mounting arm having a hook.