JP4178558B2 - Rotating electric machine - Google Patents

Description

  The present invention relates to a winding connection structure in a stator incorporated in a rotating electrical machine.

A conventional stator of a rotating electric machine is configured as shown in FIGS.
In the figure, reference numeral 30 denotes a rotating electric machine, which has a frame 31, a rotor 32, and a stator 33 of the rotating electric machine 30 as main components. The frame 31 is formed in a cylindrical shape, and brackets 34 and 35 are attached to both ends. In the rotor 32, bearings 36 and 37 are attached to brackets 34 and 35, a yoke 39 is fixed to a rotating shaft 38 supported by the bearings 36 and 37, and a permanent magnet 40 is attached to the outer periphery of the yoke 39. . The stator 33 is configured by winding a stator winding 42 around a stator core 41 in which magnetic plates are laminated. The connection of the winding start end and the winding end end of the stator winding 42 of the rotating electrical machine 30 configured as described above is connected by a connection plate unit 43 as shown in FIGS. The connection plate unit 43 is formed in a C shape on the upper surface of a disc-shaped unit main body 44 made of synthetic resin, and has lead terminals 45a, 46a, 47a at one end, and a plurality of the stator windings on the outer periphery. 42. Conductive members 45, 46, and 47 for differentiating each having connection terminals 45b, 46b, and 47b for connecting the winding start end and the winding end end of 42 are provided, and the insulating member 48 is provided on the phase distinguishing conductive members 45, 46, and 47. , 49, 50 are alternately stacked and fixed. Reference numeral 51 denotes a common conductive member attached to the unit main body 44.
Next, the connection work of the stator winding will be described.
A phase-specific conductive member 45 is placed on the upper surface of the unit main body 44, and an insulating member 48 is placed on the upper surface of the phase-specific conductive member 45. Next, the phase-specific conductive member 46 is placed on the top surface of the insulating member 48, and the insulation member 49 is placed on the top surface of the phase-specific conductive member 46. Further, the phase-specific conductive member 47 is placed on the upper surface of the insulating member 49, and the insulating member 50 is placed on the upper surface of the phase-specific conductive member 47 and stacked alternately. Next, the common conductive member 51 is fixed inside the unit main body 44 to constitute the connection plate unit 43. The thus configured connection plate unit 43 is arranged to face one side of the stator core 33, and one end of, for example, a U-phase stator winding of the stator winding 42 of the stator core 41 is connected to the connection plate. The unit 43 is connected to the terminal 45 b of the phase-specific conductive member 45, and the other end is connected to the common conductive member 51 of the connection board unit 43. Thus, one end of the V-phase and W-phase stator windings is connected to the terminals 46 a and 47 a of the phase-specific conductive members 46 and 47 of the connection plate unit 43, and the other end is connected to the common conductive for the connection plate unit 43. Connected to the member 51, the winding ends of the stator windings are connected by the connection plate unit 43.

However, the stator winding 42 of the conventional rotating electric machine projects the electric wire at the winding start end or the winding end end of the stator winding 42, and the end of the protruding electric wire is used as the phase-conducting conductor of the connection plate unit 43. The terminals 45b, 46b, 47b of the members 45, 46, 47 are inserted, and the ends of the stator winding 42 and the terminals 45b, 46b, 47b are fixed by soldering or the like. For this reason, the end of the stator winding 42 in a narrow place must be inserted and connected to the terminals 45b, 46b, 47b of the phase-separating conductive members, and the wiring work of the stator winding 42 is complicated. there were. Since the phase-specific conductive member is formed by punching in a C shape, the material yield is poor.
In view of the above, an object of the present invention is to make it possible to easily connect ends of stator windings wound around a coil bobbin.

In order to solve the above problems, the present invention has the following characteristics.
According to the first aspect of the present invention, the stator winding (4) is wound around the coil bobbin 5) attached to the stator core (3) of the rotating electrical machine, and each stator winding of the same phase of the stator winding (4) is wound. In a rotating electrical machine having a stator in which a wire (4) is connected through a conductor, a connection plate (11) is disposed along the axial direction of (4) of the stator winding, and the connection plate (11 ), And the connection plate (11) is formed in a disc shape from an insulating material, and has an arc-shaped groove (12) on one end face. ), (13) and (14) are provided in the radial direction, and the conductive members for separation (16), (17) and (18) are connected to the terminal strips (16a) and (17a) on the side surfaces of the strip-shaped conductors. ) (18a) are provided, and the conductive members for separation (1) are provided in the grooves (12), (13), and (14) of the connection plate (11). ) (17) strip conductors are inserted in (18), in which the terminal piece (16a) (17a) (18a), characterized in that the protruding bent radially from said groove.
According to the invention of claim 2, the stator winding (4) is wound around the coil bobbin (5) attached to the stator core (3) of the rotating electric machine, and the stators of the same phase of the stator winding (4) are wound. In a rotating electrical machine having a stator in which a winding (4) is connected via a conductor, a connection plate (11) is disposed beside (4) of the stator winding, and the connection plate (11) The conductive members for separation (16), (17), and (18) and the conductive member for common use (19) are arranged inside, and the connection plate (11) is formed in a disk shape from an insulating material, and is formed on the end face. A plurality of arc-shaped grooves (12), (13), (14), and (15) are provided in the radial direction, and the conductive members for common use with the phase-specific conductive members (16), (17), and (18) (19) is configured by providing terminal pieces (16a), (17a), (18a), and (19a) on the conductor, and the connection plate (11) The conductive members for separation (16), (17), and (18) and the common conductive member (19) are inserted into the grooves (12), (13), (14), and (15), and the terminal pieces (16a) (17a) ( 18a) (19a) protrudes in the radial direction from the grooves (12) (13) (14) (15).
According to the invention of claim 3, the stator winding (4) is wound around the coil bobbin (5) attached to the stator core (3) of the rotating electrical machine, and the stators of the same phase of the stator winding (4) are wound. In a rotating electrical machine having a stator in which a winding (4) is connected via a conductor, a connection plate (11) is disposed beside (4) of the stator winding, and the connection plate (11) The conductive members for separation (16), (17), (18) and the conductive member for common use (19) are arranged inside, and the connection plate (11) is formed of an insulating material, and has an arcuate shape on one end face. The conductive member for differentiation (16) (17) (18) is configured by providing terminal strips (16a) (17a) (18a) on the side surface of the strip-shaped conductor, The strip-shaped conductors (16), (17), and (18) are inserted into the grooves of the connection plate (11), and the terminals (16a) (17a) (18a) in which is characterized in that protrudes from the groove.

  According to the present invention, since the stator windings of the respective phases wound around the coil bobbin are connected by the phase-specific conductive member attached to the connection plate, the connection is simplified. In addition, the yield of the material is good.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings.

1 is a side sectional view of a rotating electrical machine showing an embodiment of the present invention, FIG. 2 is a front view of a connection plate, FIG. 3 is a rear view of the connection plate, and FIG. 4 is an enlarged sectional view taken along line AA of FIG. FIG. 5 is an enlarged perspective view of the main part.
In the figure, reference numeral 1 denotes an electric motor, and a stator core 3 is attached to a frame 2 of the electric motor 1. A stator winding 4 is wound around the fixed iron core 3. The stator winding 4 is wound around a coil bobbin 5 made of an insulating material. As shown in FIG. 5, the winding start end 4a and the winding end end 4b of the stator winding 4 are fitted into an engagement groove 5b provided in the collar 5a of the coil bobbin 5, so that the winding start end 4a of the stator winding 4 is obtained. The winding end 4b is fixed to the collar 5a of the coil bobbin 5. Reference numeral 6 denotes a bracket fixed to the end surface of the frame 2. Reference numeral 7 denotes a rotating shaft supported by a bearing 8 attached to the bracket 6, and 9 denotes a yoke attached to the rotating shaft 7. A permanent magnet 10 is attached to the outer periphery of the yoke 9. Reference numeral 11 denotes a connection plate formed in a cylindrical shape from an insulating material. As shown in FIGS. 2 to 4, a plurality of arc-shaped grooves 12, 13, 14, 15 are provided concentrically on one end face of the connection plate 11. A plurality of insertion holes (not shown) communicating with the grooves 12, 13, 14, 15 are provided on the other end surface of the connection plate 11. Reference numerals 16, 17, and 18 are conductive members for separation, which are formed in a strip shape from a conductive material and have a plurality of terminal pieces 16a, 17a, and 18a on the side surfaces. Reference numeral 19 denotes a common conductive member which is formed in a strip shape from a conductive material and has a plurality of terminal pieces 19a on the side surface. The terminal pieces 16a, 17a, 18a, 19a are provided with U-shaped grooves 16b, 17b, 18b, 19b cut into a U-shape. The phase-conducting conductive members 16, 17, 18 and the common conductive member 19 are bent into an arc shape and fitted into the grooves 12, 13, 14, 15 of the connection plate 11, and as shown in FIG. The terminal pieces 16a, 17a, 18a, 19a of the members 16, 17, 18 and the common conductive member 19 are projected from the insertion hole and bent outward.
Next, the operation of connecting the stator windings of the rotating electrical machine will be described.
First, the conductive members 16, 17, 18 for common use and the common conductive member 19 are fitted into the grooves 12, 13, 14, 15 of the connection board 11, and the conductive members 16, 17, 18 for common use and the common conductive member 19 are used. The terminal pieces 16 a, 17 a, 18 a, 19 a are projected from the insertion hole to the back surface of the connection plate 11, and the terminal pieces 16 a, 17 a, 18 a, 19 a are bent in the radial direction of the connection plate 11. Next, the winding start end 4 a and the winding end end 4 b of the stator winding 4 are sandwiched between engagement grooves 5 b provided on the flange 5 a of the coil bobbin 5. A stator 11 in which the connection plate 11 to which the conductive members 16, 17, 18 for common use and the conductive member 19 for common use are mounted is placed on the collar 5 a of the coil bobbin 5 and is fitted into the engagement groove 5 b of the collar 5 a. Conductive members 16, 7, 18 for separation attached to the connection plate 11 at the winding start end 4 a and winding end end 4 b of the winding 4, and grooves 16 b of the terminal pieces 16 a, 17 a, 18 a, 19 a of the common conductive member 19, 17b, 18b and 19b are fitted, and the winding start end 4a and winding end end 4b of the stator winding 4 and the grooves 16b, 17b, 18b and 19b are soldered and connected. Therefore, the connection between the winding start end 4a and the winding end end 4b of the stator winding and the terminal pieces 16a, 17a, 18a, 19a of the phase-separating conductive members 16, 17, 18, 19 is simplified.
Although an electric motor has been described in the embodiment, a generator may be used.

It is a sectional side view of the rotary electric machine which shows the Example of this invention. It is a front view of the connection board which shows the Example of this invention. It is a rear view of the connection board which shows the Example of this invention. It is an expanded sectional view which follows the AA line of FIG. It is an expansion perspective view of the principal part which shows the Example of this invention. It is a sectional side view of the conventional rotary electric machine. It is sectional drawing of the conventional connection board. It is a top view of the conventional connection board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric motor 2 Frame 3 Stator iron core 4 Stator winding 4a Winding start end 4b Winding end 5 Coil bobbin 5a Collar 5b Engaging groove 6 Bracket 7 Rotating shaft 8 Bearing 9 Yoke 10 Permanent magnet 11 Connection plates 12, 13, 14, 15 Grooves 16, 17, 18 Phase-specific conductive members 16a, 17a, 18a Terminal pieces 16b, 17b, 18b U-shaped groove 19 Common conductive member 19a Terminal piece 19b U-shaped groove

Claims (3)

The stator winding (4) is wound around the coil bobbin (5) attached to the stator core (3) of the rotating electrical machine, and each stator winding (4) in phase with the stator winding (4) is In a rotating electrical machine with a stator connected through a conductor,
While arranging the connection plate (11) beside the axial direction of the stator winding (4),
In the connection plate (11), the conductive member for differentiating (16) (17) (18) is arranged,
The connection plate (11) is formed in a disk shape from an insulating material, and has a plurality of arc-shaped grooves (12), (13), and (14) in the radial direction on one end surface,
The phase-specific conductive members (16), (17), and (18) are configured by providing terminal pieces (16a), (17a), and (18a) on the side surfaces of the strip-shaped conductor,
The strip-shaped conductors of the phase-specific conductive members (16), (17), and (18) are inserted into the grooves (12), (13), and (14) of the wiring board (11), and the terminal pieces (16a), (17a), and (18a). ) Is bent from the groove in the radial direction and protrudes. The stator winding (4) is wound around the coil bobbin (5) attached to the stator core (3) of the rotating electrical machine, and each stator winding (4) in phase with the stator winding (4) is In a rotating electrical machine with a stator connected through a conductor,
While arranging the connection plate (11) beside (4) of the stator winding,
In the connection board (11), the conductive member for phase (16) (17) (18) and the common conductive member (19) are arranged,
The connection plate (11) is formed in a disc shape from an insulating material, and has a plurality of arc-shaped grooves (12), (13), (14), and (15) in the end surface in the radial direction.
The phase-specific conductive members (16) (17) (18) and the common conductive member (19) are configured by providing terminal pieces (16a) (17a) (18a) (19a) on the conductors,
The conductive members for separation (16), (17), and (18) and the common conductive member (19) are inserted into the grooves (12), (13), (14), and (15) of the wiring board (11), and the terminal piece (16a) (17a) (18a) (19a) A rotary electric machine characterized by projecting radially from the grooves (12) (13) (14) (15). The stator winding (4) is wound around the coil bobbin (5) attached to the stator core (3) of the rotating electrical machine, and each stator winding (4) in phase with the stator winding (4) is In a rotating electrical machine with a stator connected through a conductor,
While arranging the connection plate (11) beside (4) of the stator winding,
In the connection board (11), the conductive member for phase (16) (17) (18) and the common conductive member (19) are arranged,
The connection plate (11) is formed of an insulating material and has an arc-shaped groove on one end surface,
The phase-specific conductive members (16), (17), and (18) are configured by providing terminal pieces (16a), (17a), and (18a) on the side surfaces of the strip-shaped conductor,
The strip-shaped conductors of the phase-separating conductive members (16), (17), and (18) are inserted into the grooves of the wiring board (11), and the terminal pieces (16a), (17a), and (18a) protrude from the grooves. Rotating electric machine.

Images