JP3499606B2 - Lead wire fixing device for rotating machine stator - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for fixing a lead wire of a rotating machine stator, and more particularly, to fixing a lead wire connected to a magnet wire of a stator coil of a small rotating machine. The present invention relates to a lead wire fixing device for fixing to a child. 2. Description of the Related Art Generally, in a small rotating machine having an output of 0.75 kW or less, a lead wire connecting a terminal of a stator coil to an external power supply or the like is often displaced relatively to the stator. Therefore, a method of binding and fixing the lead wires to the coil end portion of the stator coil using a thread so as not to cause disconnection of the connection portion has been adopted. However, in the above-described fixing method, a load stress is applied to the enamel wire constituting the coil end of the stator coil, and a thin enamel insulation of the enamel wire is applied. In addition to the risk of damaging the coating and causing layer short-circuiting of the coil, the work of binding the lead wire to the coil end could not be automated, and there was a problem of lack of uniformity in quality. The present invention has been made to eliminate the above disadvantages. [0005] A lead wire fixing device for a rotating machine stator according to the present invention comprises a main body portion extending along an outer peripheral portion of an end face of the rotating machine stator, and a shaft extending from an end face of the rotating machine stator. An engagement protrusion formed on the main body portion so as to be fitted into a gap formed between slot insulators protruding outward in the direction;
Lead wire fixing means formed on the main body part so as to be spaced apart from each other in the longitudinal direction, and the lead wire fixing members opposed to each other
A storage protection groove leads formed between means, the housing holding
Partition walls that divide the guard groove into two parts, and each partition wall
The lead formed between the lead wire fixing means
The lead wire fixing means.
The end of the lead wire fixed by
Bent upright at the ridge and connected to the lead wire
Together with the stator coil wire
It is characterized by being stored in a bent state. An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a stator of a rotating machine using a lead wire fixing device for a rotating machine stator according to the present invention, wherein 1 is a stator, 2 is a stator core, and 3 is a stator core 2. A plurality of stator teeth 4 projecting radially inward from the inner peripheral surface are stator coils 4 wound around slots 5 formed between the teeth 3, and 6 are arranged along the inner wall of the slots 5. A slot insulator made of a film material or the like provided; 7 is a magnet wire forming the stator coil 4 having a conductor formed with a coating of an enamel insulating paint; 8 is a cross-linked polyethylene wire connected to the magnet wire 7; Lead wire composed of coated electric wires such as vinyl electric wires and rubber insulated electric wires. FIG. 3 shows an electric circuit of the rotating machine, 9 is a power supply, 4a is a main coil constituting the stator coil 4, which is directly excited by the power supply 9, 10 is a capacitor, 4b is a capacitor 10b. And an auxiliary coil that is excited by the power supply 9 via the power supply 9 and constitutes the stator coil 4. In the present invention, as shown in FIGS. 1 and 2, a lead wire 8 is fixed to a lead wire fixing device 11, and an inner periphery of a stator core 2 located between adjacent stator teeth 3 is provided. A part of the slot insulator 6 along the surface is
Protruding axially outward from the end face of the
′, And the lead wire fixing device 11 is connected to the slot insulator portion 6 ′ protruding from the end face of the stator core 2.
Is arranged and fixed to one end face of the stator core 2 along the outside of the core. As shown in FIGS. 4 and 5, the lead wire fixing device 11 includes a coil end 4 'of the stator coil 4.
And a plate-shaped main body portion 12 of an elastic insulating material extending in an arc of 180 ° or more along the outer periphery of the stator core 2, and projecting axially outward from end faces of the stator core 2 formed at both ends of the plate-shaped main body portion 12. The arc-shaped locking projection 13 inserted and fixed in the gap formed between the slot insulator portions 6 ′ corresponds to the number of the lead wires 8 separated from each other in the longitudinal direction of the plate-shaped main body portion 12. Opposing clamping pieces 14 formed on both sides of the plate-shaped main body portion 12 at a plurality of positions.
And a side wall 16 protruding on both sides of the plate-shaped body portion 12 to form a U-shaped storage protection groove 15 between the adjacent holding pieces 14 and a longitudinally intermediate portion of the side wall 16. A partition wall 17 for partitioning the storage protection groove 15 into two parts, and a lead wire rising ridge 18 formed on the surface of the plate-shaped main body portion 12 between the storage protection groove 15 and the holding piece 14. . Since the lead wire fixing device 11 of the present invention has the above-described configuration, when the lead wire 8 is fixed to the lead wire fixing device 11, as shown in FIGS. The lead wire 8 is fixed to the plate-shaped main body portion 12 by forcibly pressing and inserting the lead wire 8 at the portion in contact with the protruding portion 18, and the leading end of the lead wire 8 is bent at right angles together with the exposed portion 19 to stand upright. As shown in FIG. 9, the magnet wire 7 of the stator coil 4 is wound around the exposed portion 19 of the lead wire 8 for electrical connection, and these portions are folded and stored in the storage protection groove 15 as shown by the two-dot chain line. . As shown in FIGS. 1 and 2, the plurality of lead wires 8 are connected to each other by a binding band 20 at a position where they are pulled out from the stator core 2. The lead wire fixing device 11 to which the lead wires 8 are fixed is disposed on the end face of the stator core 2, and the locking projections 13 at both ends thereof are slot insulator portions protruding from the end face of the stator core 2. 6 'is fixed by inserting it into the gap formed between them. As described above, according to the lead wire fixing device for a rotating machine stator of the present invention, the lead wire fixing device 11 can be fixed to the stator core 2 very easily. Prior to this, the lead wire 8 is clamped to the lead wire fixing device 11 by the holding piece 14.
The stator coil 4
The fixing of the lead wire 8 can be easily achieved without damaging the coil end 4 '. The connection between the exposed portion 19 of the lead wire 8 and the magnet wire 7 of the stator coil 4 is
After being erected at the eight portions, it is bent and stored in the storage protection groove 15, so that no mechanical stress is applied to the connection portion, and a failure caused by insulation damage such as a short circuit can be wiped out. No insulating parts such as covering tubes are required. Furthermore, each component used has a fixed shape,
There are various benefits, such as the ability to work with an automatic machine, and therefore stable quality and economical excellence.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a stator of a rotating machine using a lead wire fixing device of the present invention. FIG. 2 is a cross-sectional side view of a part of a stator of a rotating machine using the lead wire fixing device of the present invention. FIG. 3 is an example of an electric circuit diagram of a rotating machine using the lead wire fixing device of the present invention. FIG. 4 is a front view of the lead wire fixing device of the present invention. FIG. 5 is a side view showing a part of the lead wire fixing device of the present invention in cross section. FIG. 6 is an explanatory front view of the lead wire fixing device of the present invention. FIG. 7 is an explanatory side view of the lead wire fixing device of the present invention. FIG. 8 is an explanatory front view of the lead wire fixing device of the present invention. FIG. 9 is an explanatory side view of the lead wire fixing device of the present invention. [Description of Signs] 1 Stator 2 Stator core 3 Stator tooth 4 Stator coil 4a Main coil 4b Auxiliary coil 4 'Coil end 5 Slot 6 Slot insulator 6' Slot insulator portion 7 Magnet wire 8 Lead wire 9 Power supply DESCRIPTION OF SYMBOLS 10 Capacitor 11 Lead wire fixing device 12 Plate-shaped main body part 13 Arc-shaped locking projection 14 Nipping piece 15 Storage protection groove 16 Side wall 17 Partition wall 18 Lead wire erecting ridge 19 Exposed part 20 Binding band

Claims (1)

(57) [Claim 1] Between a main body portion extending along an outer peripheral portion of an end face of a rotating machine stator and a slot insulator protruding axially outward from an end face of the rotating machine stator. An engagement protrusion formed on the main body portion so as to be fitted in the formed gap; lead wire fixing means formed on the main body portion so as to be spaced apart from each other in the length direction ; and the lead wire fixing means facing each other while
A storage protection groove leads formed on, the storage protection groove
Partition walls to be divided into two parts, and each partition wall and this
Lead wire formed between the opposite lead wire fixing means
Upright ridges, which are fixed by the lead wire fixing means.
The tip of the fixed lead wire is
Is bent upright and fixed to the above lead wire
Fold it together with the child coil wire into the above-mentioned storage protection groove.
Lead wire fixing device for a rotary machine stator characterized in that it is housed.