JPH028524Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a coil connection device for a rotating electric machine.

[Conventional technology]

2. Description of the Related Art Typical conventional methods for connecting coils of rotating electric machines, such as motors, are shown in FIGS. 1 and 2.

First, the coil 1 wound around the stator of the electric motor is subjected to prescribed treatments (molding, taping, etc.), and then the lead wire 2 is inserted into the Tetron braided sleeve.
Insert the coil into the coil to maintain insulation, gather it at one place on the circumference of the coil end, and tie and fix it with thread 4.
After peeling off the film on the terminal of the lead wire 2 and electrically connecting it to the lead wire 5 by soldering, etc., the insulation tube 6 is connected.
Then, they were tied together again at one place on the circumference of the coil end and tied and fixed with thread 4.

However, in this type of coil bundling, especially in the case of thin lead wires for small electric motors, etc., the above work not only requires manual dexterity and skill, but also requires a large number of man-hours. It had the disadvantage of being extremely poor.

In order to eliminate this drawback, for example,
It has been proposed to provide a terminal plate for connecting the lead wires of the stator coils, as in Japanese Patent Laid-open No. 67802 and Japanese Patent Application Laid-Open No. 54-46301.

[The problem that the idea attempts to solve]

However, since the terminal plate is fixed to the end portion of the stator coil, or the terminal plate is curved to fit the side periphery of the main coil and auxiliary coil of the stator, and has an occluded U-shape, The drawback was that it was not mechanically stable.

[Means to solve the problem]

In order to solve the above-mentioned drawbacks, the present invention has an insulating end plate 11 provided opposite to one end surface of an annular core around which a stator coil is wound and held, and an insulating end plate 11 provided on the core to fix the end plate 11. a foot portion 12 to be inserted into the formed hole; a cutout groove 13 for locking the lead wire 2 formed at a position of the end plate 11 corresponding to the lead wire 2;
An L-shaped locking protrusion 14 provided on the end plate 11 for separating the lead wires 2 from each other, and a temporary locking piece 17 at the end of the lead wire 2 are bent. To provide a coil connecting device for a rotating electric machine, which includes a terminal 16 and a holding part 15 having a tunnel-like hole into which the terminal 16 for electrically connecting the outlet wire 2 and the lead wire 5 is inserted and fixed. .

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 3 to 5. Incidentally, the same components as those in the conventional example are given the same reference numerals and the explanation thereof will be omitted. Reference numeral 11 denotes an end plate made of resin with excellent heat resistance, insulation, and mechanical strength, such as glass-filled nylon, which is provided opposite one end surface of the annular core around which the coil 1 is wound and held; 12
Reference numeral 13 indicates a foot portion to which the end plate 11 is inserted and fixed into a hole formed in the iron core, and 13 indicates an end plate 11 corresponding to the lead wire 2.
The number of cutout grooves for locking the lead wires 2 formed at the position is equal to the total number of the lead wires 2. 14 is a locking protrusion that separates the lead wires 2 provided on the end plate 11 by a predetermined insulation distance or more; 15 is a locking projection 2 provided on the end plate 11;
A tunnel-shaped hole 16 is an L-shaped hole made of copper or brass with good conductivity that is inserted and fixed into the tunnel-shaped hole 15 and is inserted into the tunnel-shaped hole 15 for electrically connecting the terminal and the lead wire 5, which will be described later. terminal, 17 is terminal 1
This is a locking piece for temporarily fixing the end portion of the lead wire 2, which is formed by cutting out and bending a part of the wire 6.

In the coil connecting device having such a configuration, the end plate 11 is fixed to the iron core of the stator via the foot portion 12, and the lead wires 2 of the coil 1 are respectively engaged in the notch grooves 13 of the end plate 11. Then, each lead wire 2 is locked to the protrusion 14 to ensure the predetermined insulation distance or more, and the locking piece 17 of the terminal 16 is inserted and fixed into the tunnel-shaped hole 15.
Wrap it around and temporarily secure it. Furthermore, connect the lead wire 2 by fusing (spot welding) etc. with an automatic machine,
The lead wire 5 is connected to the terminal 16 by soldering or the like.

Therefore, it is possible to reliably separate the connecting parts of the lead wire 2 and the lead wire 5 from each other and the lead wires 2 from each other by a predetermined insulation distance or more with a simple operation. 2 and the lead wire 5 can be connected.

In the above embodiment, a method was used in which the lead wire was soldered to the terminal, but the terminal was shaped like a Faston type male terminal, and after assembling the motor, an insertion hole was provided in the bracket, and the female end of the lead wire was inserted through this insertion hole. If the connection method is to insert a terminal, the lead wire installation work can be streamlined.

Further, the shape of the end plate is not limited to the above embodiment, and may be shaped into a semi-circle, a horseshoe shape, etc. depending on the position of the lead wire to be wired, which can reduce material costs. Become.

Furthermore, although the above embodiment is an example of bundling the coil lead wires of a motor stator, it goes without saying that the present invention can also be applied to bundling the coil lead wires of a stator of a generator, etc.

[Effect of idea]

The end plate 11 is firmly fixed to the annular core by the foot portion 12 inserted into the hole formed in the core, and the L-shaped terminal 16 is securely fixed to the annular core by the holding portion 15 having a tunnel-shaped hole. Since it is held by the end plate 11, a mechanically stable and durable coil connecting device can be obtained.

[Brief explanation of drawings]

Figure 1 shows a state in which the lead wire of a conventional coil is covered with a sleeve and bundled, and Figure 2 shows a state in which the lead wire is connected to the lead wire of a conventional coil, covered with an insulating tube, and bundled. Figure 3 is a perspective view of a coil binding device which is an embodiment of the present invention;
The figure is a perspective view of the end plate of the same device, and FIG. 5 is a perspective view of the terminal. 1... Coil, 2... Lead wire, 5... Lead wire, 11... End plate, 13... Notch groove, 14... Protrusion, 16... Terminal.

Claims (1)

[Scope of utility model registration request] an insulating end plate 11 provided opposite to one end surface of an annular core around which a stator coil is wound and held; and a foot 12 inserted into a hole formed in the core to fix the end plate 11. , a notch 13 for locking the lead wire 2 formed at a position of the end plate 11 corresponding to the lead wire 2; and a cutout groove 13 for locking the lead wire 2 provided on the end plate 11;
an L-shaped terminal 16 formed by bending a temporary locking piece 17 at the end of the lead wire 2; A coil connecting device for a rotating electric machine, comprising a holding part 15 having a tunnel-like hole into which the terminal 16 for electrically connecting the terminals 16 is inserted and fixed.