JPS6268054A - Armature for motor - Google Patents

Abstract

PURPOSE:To make a binding member resist revolution at a high speed and a high temperature by cylindrically forming the binding member of a metal while a connecting means engaging the binding member with an armature core and supporting the binding member. CONSTITUTION:A binding member 10a holding a coil end is mounted onto the outer circumference of the coil end for an armature coil. The binding ember 10a is cylindrically formed of a metal. The binding member 10a is engaged with an armature core 7 by a connecting means. The connecting means is formed by a binding connecting section 11 fitted to an end section on the armature core 7 side of the binding member 10a and a core connecting member with a slot, on which the armature coil is wound, and a connecting section 13 retained to the binding connecting section 11.

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to an armature for an electric motor.

[Background of the invention]

FIG. 4 shows a conventional example of an electric motor equipped with an armature. As shown in the figure, the armature 1 is supported at both ends by bearings 3 fixed to a bracket 2. When current is passed through the field winding 6 fixed by the yoke 4 and the magnetic pole 5, the armature 1 rotates, but in a starter or other high-speed rotating electric motor, the armature coil wound around the armature core 7 floats due to centrifugal force. A bind tube or the like is wound around the outer periphery of the coil end 9 connected to the commutator 8 as a bind member 1o so that the coil end 9 is connected to the commutator 8. However, bind tubes have limitations in terms of strength and heat resistance. Furthermore, when piano wire or the like is used, it is difficult to obtain the desired results and the cost is also high. When using a metal binding member 10 such as an iron ring, it is difficult to fix the binding member 10. Regarding this, there is Japanese Patent Publication No. 58-29585.

[Purpose of the invention]

The present invention has been made in view of the above points, and it is an object of the present invention to provide an armature for an electric motor having a binding member that can stably hold a coil end during high speed rotation and high temperature. .

[Summary of the invention]

That is, the present invention provides an electric motor comprising an armature core around which an armature coil is wound, and a commutator to which the armature coil is connected, and a binding member for holding the coil end is provided on the outer periphery of the coil end of the armature coil. The armature is characterized in that the binding member is formed of metal into a cylindrical shape and is supported by a locking means for locking onto the armature core, whereby the binding member rotates at high speed. , able to withstand high temperatures.

[Embodiments of the invention]

The present invention will be explained below based on the illustrated embodiments. An embodiment of the invention is shown in FIGS. 1 and 2. FIG. In this embodiment, the binding member 10a is formed of metal into a cylindrical shape, and is supported by a locking means for locking it to the armature core 7. I did it like that. By doing this, the binding member 10a is formed of metal into a cylindrical shape, and is supported by a locking means for locking it to the armature core 7, so that it can withstand high speed rotation and high temperatures. It is possible to obtain an armature 1a for an electric motor having a binding member 10a that makes it possible to stably hold the coil end 9 during high speed rotation and high temperature.

That is, a locking means is provided to lock the bind member 10a to the armature core 7, but the locking means is provided at the end of the bind member 10a on the side of the armature core 7, and the bind locking portion 11 and the armature core 7 are connected to each other. The core locking portion 14 has a slot 12 around which the armature coil is wound and a locking portion 13 that locks with the bind locking portion 11. The bind locking portion 11 was formed by providing a protrusion at its end.

Note that in the figure, 15 is an insulator. By doing so, the locking means is provided at the bind locking portion 11 provided at the end of the binding member 10a on the armature core 7 side, and at the end of the armature core 7 on the commutator 8 side, and the stop 2 around which the armature coil is wound is provided. 12 and bind locking part 1
1 and a core locking member 14 having a locking portion 13 to lock the core locking member 14. If the locking portion 13 is fixed by crimping or other means, the bind locking portion 11 and the core locking member 14 are fixed together through the protrusion, and the bind member 10
a can be firmly fixed to the armature core 7 by stopping its movement in the axial direction, and the coil end 9 can be stably held during high-speed rotation. Further, since the binding member 10a is made of metal, there is no problem with the heat-resistant tube and it can withstand use at high temperatures. Furthermore, if a plurality of locking portions 13 provided at predetermined intervals in the circumferential direction of the core locking member 14 are cut off, they can be used to balance the rotation of the armature 1a.

Another embodiment of the invention is shown in FIG.

In this embodiment, the binding locking portion 11 of the binding member 10b
A was formed by providing a concave portion opening on the inner diameter side at the end thereof. By doing this, if the locking part 13 of the core locking member 14 is bent, the core locking member 14 and the bind locking part 11a are fixed together through the recessed part of the bind locking part 11a. Therefore, it is possible to achieve the same effect as in the case described above.

〔Effect of the invention〕

As described above, the present invention provides a binding member that can stably hold the coil end during high speed rotation and high temperature, and provides a binding member that can stably hold the coil end during high speed rotation and high temperature. It is possible to obtain an armature for an electric motor having the following.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional side view of the main part of the armature of an embodiment of the armature for an electric motor of the present invention, FIG. 2 is a front view of the main part of the core locking member of the same embodiment, and FIG. A vertical sectional side view of the main part of the armature of another embodiment of the armature for use,
FIG. 4 is a partially vertical side view of an electric motor using a conventional armature. 1a... Armature for electric motor, 7... Armature core, 8... Commutator, 9... Coil end, 1
0a10b... Bind member, 11, lla... Bind locking portion, 12... Slot, 13... Locking portion, 14... Core locking member.

Claims (1)

[Claims] 1. An armature core around which an armature coil is wound;
and a commutator to which the armature coil is connected, and the armature for an electric motor is provided with no binding member for holding the coil end on the outer periphery of the coil end of the armature coil, wherein the binding member is formed of metal into a cylindrical shape. An armature for an electric motor, further comprising a locking means for locking the armature core to support the armature core. 2. The locking means is provided at a bind locking portion provided at the end of the armature core side of the binding member, a slot provided at the commutator side end of the armature core, and a slot around which the armature coil is wound; The armature for an electric motor according to claim 1, wherein the armature is formed of the bind locking portion and a core locking member having a locking portion to be locked.