JPS6032549A - Bonding method of commutator to armature winding - Google Patents

Abstract

PURPOSE:To obtain an electric connection between a commutator and an armature winding in a high reliability by simultaneously melting a soldering wire of a conductive melting wire by utilizing the heat generation of a fusing method, and covering fixedly the bonding portion with it. CONSTITUTION:After lead wirings 4 are engaged with a commutator coupling pawl 3, a suitable solder 5 is inserted to a gap formed between the pawl 3 and the surface of a commutator 2. Then, a suitable current is flowed to electrode rods 1 for the prescribed period, an insulating film covered on the surface of the wirings 4 is broken by the generated heat, the solder 5 inserted previously is simultaneously melted, and the periphery of the welded portion is covered by the melted material. At this time, the melted solder and not melted solder wirings 5 can be instantaneously separated at the melting time due to the generated heat. Accordingly, a series of the abovementioned operation is continuously repeated to bond the wirings 4 to the pawl 3 disposed on the periphery of the commutator 2.

Description

[Detailed Description of the Invention] The present invention relates to a method of manufacturing an electric machine with a cherry-shaped rotor having an m-mature winding, and in particular, the m-mature winding and a commutator are electrically connected to each other. The present invention relates to an improvement in the method of joining a Noryuko coil and a 'rJLφ child winding that are electrically connected to each other.

In the conventional manufacturing method for armatures, the joining method for electrically connecting the armature winding and the commutator includes soldering, which is a method for connecting wires protruding from the commutator. Bend the claw and hook the conductor drawn out from the armature winding diagonal i to the connection claw,
Pressure is maintained from above with an electrode rod, and in this state, an appropriate current is applied to the 7n pole for a predetermined period of time to remove 1% of the insulating liquid on the surface of the conductor.
There is a joining method called 7-Using, in which the connecting claw is deformed and pressurized so that it can maintain contact with the claw after the core is broken by heat generated during energization and the wire is exposed. Although this joining method is inferior to the soldering method in terms of the reliability of electrical continuity, it has the advantages of fast construction, high efficiency, and ease of automation. This fusing method is often used instead of the fusing method.

However, even in the above fusing method, the reliability of the 1a air connection is limited between the claw part copper on the Ryuko side and the core on the winding side! ? i! Erosion such as oxidation occurring from the gap with the copper causes the conduction to become unstable over time, resulting in an inconvenient period E1 in which the quality is uncertain in the long run.

As a way to solve the above problem, the surface of the commutator is plated with a highly conductive metal such as tin, and the tin formed on the surface of the commutator is melted by the heat generated when electricity is applied, which destroys the insulating coating of the conductor. A method has been proposed in which the materials are joined by

However, the above-described bonding method requires expensive plating equipment to plate the commutator.
Moreover, pollution problems associated with the discharge of plating waste liquid also occur, making it difficult to perform plating within a factory, and currently iron products are mainly shipped to specialized plating factories.

Therefore, the above-mentioned conventional joining method increases the cost of the commutator-equipped turtle foot structure, and also causes large losses on the ground and in logistics due to the outsourcing of plating and other processes. There are drawbacks.

This invention was made in order to solve the above-mentioned drawbacks of the conventional method.
;4 Efficiency: The object of the present invention is to provide a method for joining a commutator and an armature wire, which has the advantage of being easy to automate.

The bonding method according to the present invention takes into consideration the heat generation during energization in the fusing method, and the bonding method is based on the following: ?・) After hooking the conductor to the connection claw and commutator hole 1 (ii)
1 (half 11-I A' suitable for the gap created in 4: 'i!
0) and pressurize that part upward with the stain stopper frame C;
, it='? L, the heat generated when energizing destroys the outer surface of the conductor, and at the same time melts the inserted semi-IJJ bond, and connects the connecting claw and the conductor to the joint and hair: It is specially designed to co-join.

Hereinafter, embodiments of this invention will be explained in detail based on the drawings of 2J.

In the drawings, (1) is the heavy pole for pressurized current supply, and (2) is I1.
The commutator (3) is a connecting claw formed on the commutator (2), and is bent into a hook shape. What about (4)?
This is a conductor drawn out from the U machine winding (not shown), and is hooked onto the connection claw (3). It is in 3.

(5) is a solder wire, fGJ 4i −'J' m t-4
(7) is a guide cylinder for inserting the solder edge (5j) into the gap between the connecting claw (3) and the commutator (2), and (7) is a feed roller that feeds out the solder edge (5j continuously and intermittently). , (8) is a reel holding the solder wire (5) in a coiled manner so as to be able to supply the solder wire (5) continuously and for a long time.

Next, the commutator (2) and the armature: 8 gauze dedication ((4)
The process of joining the two will be explained.

First, the connection claws (
3) Pull the conductor wire (4) by normal means, and in that state, connect the connecting claw (3) and the surface of the commutator (2) at H1.
+ Before being guided to the river J (2a) by Furi Jiro 2 (7) (
Insert the tip of the half-IT (wire (5)) drawn out from step 6).

Next, move the connection claw (3) upward to apply pressure to the energization ju.
l, p↑t(1) Ship jjI+i%j claw (,'3 processing work f,?si, in this state 1+1.i IIJ8<・de(
1) is energized with a suitable 7.1B current for a predetermined period of time, and the heat emitted here destroys the insulating film covering the surface of the conductor (4), and at the same time removes the semi-II odor (4) inserted in advance. [j
) is melted 19, and this molten phase forms /i'i at the joint.
Tighten the circumference.

At this time, the eluted solder and the unmelted solder wire (5)
When the commutator (2) melts due to heat generation, it melts once every minute, so by continuously repeating the above-mentioned series of operations, several sleeves installed around the circumference of the commutator (2) are melted. A conductive wire (4) can be joined to the wire connection claw (3).

Therefore, according to the joining method according to the present invention, the heat generated by the fusing method is used to simultaneously melt the half-LU wire, etc., using the melting material wire with good conductivity. - Since it can be twisted and covered and fixed to the joint, highly reliable electrical continuity with the commutator can be obtained.

In the above example, a solder wire is used as the molten material wire with good conductivity, but the solder wire has a melting point of 500°C to 600°C or lower and has good conductivity. If the metal is metal, a bonding state similar to that in the Tfil example can be obtained.

Furthermore, in the above embodiment, the half-II original '4 is converted to 7/! The example shown is that it is inserted between 1 and the commutator table if+i, but if the joint part is extremely small, the joint part side A! Even if a solder wire is attached nearby, it will be melted by heat generation and coated and fixed around the joint, so that a joint state similar to that of the previous embodiment can be obtained.

As explained above in Il'rI Wholesale 1, according to the method of this invention, it is possible to produce all the products, including plate flow pre-treatment and plating treatment of the joint parts using the conventional 7-using method, making it possible to significantly reduce costs. It is easy to increase the efficiency and automate the fusing method, and at the same time, it can satisfy the high reliability of the joints using the fastening method.

Furthermore, according to the method of this invention, conventional soldering is
It is now possible to use highly heat-resistant electric wires, which could not be used due to damage to the insulation coating of the conductor wires, and the quality and performance of the motor can be improved.

[Brief explanation of the drawing]

The drawing shows one embodiment of the present invention, and is a perspective view of a main part showing the state when a commutator and an armature winding are joined. (11... Electrode rod for pressurizing electricity, (2)... Commutator,
(2a)... Gap, (3)... Connection claw, (4)...
... Conductor wire, (5) ... Solder wire, (6) ... Guide tube,
(Force...Feed roller, (8)...Solder wire reel.

Claims (1)

[Claims] Hook the conductive wire pulled out from the TLMA child winding sludge I onto the connecting claw protruding from the end of the commutator, and place it in the gap between the connecting claw described in II and the surface of the commutator, or in the vicinity thereof. Position the molten phase such as a wire, hold the electrode rod under pressure from above the connection claw, and apply a constant F9r current to the m-axis rod for a certain period of time to enclose the molten material around the joint. A method of joining a commutator and an m-mature winding, characterized by the following.