JPH0441743Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a flat motor for electrical equipment that cools automobile radiators and condensers, and particularly relates to fixing lead wires and lead rubber.

Conventional technology Conventionally, the lead wire for energizing the brush was passed through a rubber outlet, and the rubber outlet was fixed by fitting into a hole provided in an outer frame bracket, or the lead wire was inserted into a hole provided in an outer frame bracket B and an outer frame bracket C. The bracket B and the bracket C were fastened and fixed with screws or the like.

An example of the above-mentioned conventional example will be described below with reference to the drawings. FIG. 3 shows a conventional fixing structure for a rubber outlet. In Figure 3,
First, the basic configuration will be explained. 1 is a brush, 2 is a lead wire, and the brush 1 can be energized. 3
4 is a field magnet, and 5 is an outer frame bracket B that fixes the field magnet 4 and also serves as a magnetic circuit yoke.
A hole is provided in which the outlet rubber 3 is fixed. 6
is an outer frame bracket A which also serves as a magnetic circuit yoke. Note that 7 is an armature, which is composed of a coil 7a, a commutator 7b, a shaft 7c, and a ball bearing 7d.

The basic operation of the motor is that there is an armature 7 disposed between the field magnet 4 and the outer frame bracket A6 with an air gap in the axial direction, and a commutator is connected from the lead wire 2 through the brush 1. 7b is energized to rotate the armature 7.

Fig. 4 shows the fixing structure of the lead wire 2 and the outlet rubber 3 in the above motor. 8 is a retainer plate, which has a conductive part that also has the function of holding the brush 1, and is connected from the outer frame bracket B5. Insulated. A clamper 9 is fixed to the retainer plate 8 so that the lead wire 2 does not move. Outlet rubber 3
is fitted and fixed into the hole of the outer frame bracket B5. This figure shows an example of a 4-pole motor, but 2-pole, 4-pole, 6-pole, 8-pole, etc.
The field magnet 4 becomes a divided magnet depending on the number of poles.

Problems to be Solved by the Invention However, in the above configuration, since the lead rubber 3 is fitted and fixed in the hole of the outer frame bracket B5, when the lead wire 2 is pulled from the outside, it is easily In order to move, it is necessary to fix it to the retainer plate 8 using a clamper 9, which raises the problem of increased cost. In addition, since it is not possible to place the field magnet 4 at the position of the protruding rubber 3, conventionally the field magnet 4 is usually placed in parts, so that the field magnet 4 faces the armature of the magnet. Since the area becomes smaller, the amount of field magnetic flux as a motor decreases, resulting in an inefficient motor.

In addition, as another conventional example, as shown in FIG.
It is also possible to provide a protruding rubber 3a between the motor and the motor and compress and fix it with screws 11, etc., but this requires the addition of an outer frame bracket C10, resulting in a motor that is more expensive than the conventional example shown in Fig. 3. Ta.

In view of the above problems, the present invention provides a highly efficient motor in which lead wires are firmly fixed without using a clamper or a new outer frame.

Means for Solving the Problems In order to solve the above problems, the lead wire and lead rubber fixing structure of the present invention is such that the lead wire through which the lead wire is passed is provided in the outer frame bracket B to which the field magnet is fixed. It was fitted into a concave groove and compressed and fixed using a field magnet.

Function In the above configuration, the outer frame bracket B and the field magnet are firmly integrated by adhesive etc., and the rubber outlet through which the lead wire is passed is compressed and fixed therein, so that the outer frame bracket B and the field magnet are firmly integrated, and the lead wire through which the lead wire is passed is compressed and fixed therein. Even if I draw a line,
It does not move easily, eliminates the need for a clamper or other means for fixing the lead wires, and eliminates the need to divide the field magnet, increasing the magnet area facing the armature to reduce the total magnetic flux. The amount increases.

Embodiment A method of fixing lead wires and lead rubber according to an embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, 12 is an outer frame bracket B, 13 is a rubber outlet, 14 is a lead wire, and 15
1 is a field magnet, 16 is an outer frame bracket A, 17 is a concave groove provided in the outer frame bracket B12, and 18 is an armature.

The structure for fixing the lead wire and the lead rubber constructed as described above will be explained below with reference to FIGS. 1 and 2. FIG. 2 is an exploded view of the outer frame bracket B12, the field magnet 15, and the rubber outlet 13 through which the lead wire 14 is passed.
The complete brush product 20, which is fitted into the concave groove 17 provided in the outer frame bracket B12 and attached to the retainer plate 19 made of an insulating material, is attached to the outer frame bracket B12 with rivets 21 or the like. There is. The thickness of the rubber outlet 13 is made thicker than the depth of the concave groove 17, so that it protrudes from the surface 12a of the outer frame bracket B12 to which the field magnet 15 is fixed. When the protruding portion of the rubber outlet 13 through which the lead wire 14 is passed is fixed to the surface 12a by gluing the field magnet 15, the rubber outlet 13 is fixed and at the same time, the inside of the rubber outlet 13 is fixed. The lead wire 14 passing through is also clamped by external force and will not easily move. As a result, the lead wire 14 is clamped onto the retainer plate 19 using a clamper or the like.
This eliminates the need for bundling and fixing inside the motor. Further, since the protruding rubber 13 is pulled out from the mating surface of the outer frame bracket B12 and the outer frame bracket A16, the field magnet 15 does not need to be divided, and the area of the magnet facing the armature 18 increases. This makes it possible to increase the total amount of magnetic flux and improve motor efficiency.

Effects of the invention As described above, the present invention arranges the outlet rubber through which the lead wire is passed in the concave groove provided in the outer frame bracket.
By fixing the field magnet to the outer frame bracket and compressing and fixing the above-mentioned lead rubber at the same time, parts such as a clamper are required to fix the lead wire.
An inexpensive flat motor can be provided.

Further, by providing the protruding rubber on the mating surfaces of the outer frame bracket A and the outer frame bracket B, there is no need to divide the field magnet, and a flat motor with high motor efficiency can be provided at the same time.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention;
3 is a sectional view showing the conventional example, FIG. 4 is a plan view of the same essential part, and FIG. 5 is a sectional view showing another conventional example. 12...Outer frame bracket B, 13...Output rubber, 14...Lead wire, 15...Field magnet, 17
...Concave groove of outer frame bracket B.

Claims (1)

[Scope of utility model registration request] An outer frame bracket is provided on the mounting surface side of the field magnet with a concave groove shallower than the thickness of the outlet rubber through which the lead wire for energizing the brush is passed, the outlet rubber is arranged in the concave groove, and the A flat motor in which the field magnet is fixed to the outer frame bracket with the rubber outlet compressed and fixed.