KR19990016916U - Field coil connection configuration of automotive start motor - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a brush holder fixed configuration of the start motor for the vehicle.

2. The technical problem the invention is trying to solve

Conventionally, a brush holder for fixing a brush is fixed to a commutator end frame with a bolt or the like in a state in which the brush holder for fixing the brush is press-fitted to the inner diameter of the end of the armature frame, and the structure is complicated and there are various problems due to interference between components.

3. Summary of solution of design

It consists of an armature assembly 17 for generating a rotational force and a driver assembly 21 for driving the ring gear of the engine by receiving the rotational force and a solenoid 28 for controlling the connection pinion 19 of the driver assembly 21. In the start motor 10;

A brush holder 16 connected to the commutator 15 of the armature assembly 17 to receive a brush for applying a current of the field coil 30 to the armature coil 14; It is characterized in that the fixing means 32 is fixed to the flange 31 of the armature frame 11 formed by deep drawing to integrally have the flange 31 at the rear end.

4. Important uses of the devise

Significant reduction in the number of parts and assembly labor can improve the assemblability and contribute to the starting performance of the start motor.

Description

Brush holder fixed configuration of car start motor

The present invention relates to the fixed configuration of the brush holder of the start motor for the car, and more specifically, to fix the brush holder directly to the armature frame is improved to improve the fixing and assembly.

Automotive start motor is a part that supplies the energy required for the first suction and compression stroke for engine start. It operates by applying battery power and rotates the ring gear of the flywheel fixed to the outer end of the crankshaft of the engine. This allows the crankshaft to rotate, causing the piston to perform suction and compression strokes.

These start motors are connected to the ring gear by sliding the armature assembly, which generates the rotation force for driving the ring gear, and the driver assembly that rotates the ring gear of the engine, and the pinion of the driver assembly. It consists largely of solenoids.

A brush is connected to the outside of the commutator fixed to the rear end of the armature shaft of the armature assembly, and the brush is configured to be supported by a brush holder.

Conventionally, the brush holder for fixing the brush as described above is composed of a separate part is fixed to the commutator end frame with a bolt or the like in the state pressed into the end diameter of the armature frame.

In this regard, the structure for fixing the brush holder is complicated, and the number of parts is increased, so that a lot of cost is not required and there is a considerable difficulty in assembly.

This is because when the brush holder is pressed into the end diameter of the armature frame and fixed with the commutator end frame as a bolt or the like, the brush holder is not in the correct position, and thus the fixing is considerably released. Because it is difficult.

In addition, before the brush holder press-fitted to the inner diameter of the end of the armature frame is fixed, the starter is deteriorated when the vehicle is mounted by causing damage due to interference or friction with each part of the armature assembly due to the positional deviation caused by the flow. It is causing problems.

Therefore, the present invention has been designed to solve the above problems, and the brush holder is fixed directly to the armature frame to reduce the number of parts and to simplify the assembly process.

Figure 1 is an overall cross-sectional view of the start motor for explaining the present invention.

2 is a cross-sectional view showing a state in which the brush holder is fixed by the technique of the present invention.

* Explanation of symbols for main parts of the drawings

10: Start motor 11: Amateur Frame

16: brush holder 17: Amateur assembly

21: driver assembly 30: field coil

31: flange

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

1 is an overall cross-sectional view of a start motor for explaining the present invention, and FIG. 2 is a cross-sectional view showing a state in which a brush holder is fixed by the technology of the present invention.

As shown in FIG. 1, a general automotive start motor 10 includes an amateur shaft 12, an amateur core 13, an amateur coil 14, and a commutator 15 in the interior of the amateur frame 11. ), An armature assembly 17 composed of a brush holder 16 for accommodating a brush and generating a rotational force is provided.

The front assembly of the armature assembly 17 is composed of an overrunning clutch 18, a connecting pinion 19, a driver shaft 20, and the like, and receives the rotational force of the armature assembly 17 to connect with the ring gear of the engine. Amateur assembly 21 for driving this is provided.

Above the armature assembly 17, the spool bobbin 24 which pulls up and holds the coil 23 inside the case 22 and is connected to the shell 25 of the driver assembly 21 in its inner side. It is composed of a solenoid 28 is provided with an operating plunger 27 for moving the lever 26.

The brush holder 16, which is connected to the commutator 15 of the armature assembly 17 and applies the current of the field coil 30 to the armature coil 14, receives a brush holder 16 of the armature frame 11. It is configured to be fixed to the rear end.

The armature frame 11 is formed by pressing a plate-shaped member of a disc shape and deep drawing to form the flange 31 integrally with the rear end, and then attaching the brush holder 16 to the flange 31. Fixing with fixing means 32 such as rivets.

The present invention as described above can fix the brush holder 16 directly on the armature frame 11 to reduce the number of parts for fixing the brush holder 16, it is possible to provide ease of assembly.

In addition, by the flange 31 integrally formed at the end of the armature frame 11, the interference between the brush holder 16 and the components of the armature assembly 17 can be eliminated.

The present invention as described above can greatly improve the assemblability by reducing the number of parts and assembly labor, as well as contribute to the starting performance of the start motor.

Claims (1)

An armature assembly 17 composed of an armature frame 11, an armature shaft 12, an armature core 13, an armature coil 14, a commutator 15, a brush and the like to generate rotational force; A driver assembly (21) including an overrunning clutch (18), a connection pinion (19), and a driver shaft (20) to drive the ring gear of the engine by receiving the rotational force; As a means for controlling the connection pinion 19 of the driver assembly 21 has a spool bobbin 24 and an actuating plunger 27 in which the pull-in and hold-in coils 23 are wound inside the case 22. In a start motor 10 consisting of a solenoid 28; A brush holder 16 connected to the commutator 15 of the armature assembly 17 to receive a brush for applying a current of the field coil 30 to the armature coil 14; An automobile start motor characterized in that it is fixed to the flange 31 of the armature frame 11 formed by deep drawing to have the flange 31 integrally formed at the rear end thereof with the fixing means 32. Brush holder fixed configuration.