JPS6029342Y2 - Motor electronic component mounting device - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a device for attaching electronic components such as a rectifier element and a time signal element to a motor.

[Background technology]

Generally, to attach electronic components such as rectifying elements and time signal elements to a printed circuit board, as shown in Figure 1, the lead wire A of the electronic component is inserted from the surface into the hole of the printed circuit board opening, and the terminal part of the lead wire I is printed. It protrudes from the back side of the board opening and is connected by soldering.

When attaching the printed circuit board opening to the motor, because of this lead wire protrusion, the stepped cylindrical body 2 protrudes from the surface of the bearing pedestal, as shown in Figure 1, to connect the printed circuit board opening to the bearing pedestal. This was done by lifting the end of the element lead wire A from the surface by the protruding length of the terminal.

Therefore, the total length of the motor becomes longer due to the raised printed circuit board opening, resulting in a problem that the equipment using the motor becomes larger.

[Purpose of the invention] The present invention was developed in view of the above-mentioned problems, and its purpose is to provide an electronic component mounting device that shortens the length of the motor.

[Disclosure of invention]

An embodiment of the present invention will be described below with reference to FIG.

Reference numeral 1 denotes a cylindrical case with a bottom, open at one end, and equipped with a bearing 2 at the center of the bottom.A magnet 3 is fixed to the inner surface of the peripheral wall.

Reference numeral 4 denotes a bearing pedestal fitted into the opening at one end of the case 1, with a boss 12 housing the bearing 2 protruding from the center of the surface of the bearing pedestal 4, and an outer periphery of the surface of the bearing pedestal 4 and a periphery of the boss 12. A recess 5 is formed between the support portion 13.13 of the printed circuit board 11 and the support portions 13.13, respectively.
A brush 6 is equipped on the back side of the machine.

7 is a rotating armature supported by the bearings 2, 2 of the case 1 and the bearing stand 4; 8 is a commutator fixed to the rotating armature 7;
The brush 6 is brought into sliding contact with the commutator 8 and fed to the armature 7.

9 is a rectifying element such as a diode, 10 is a time signal element for preventing radio interference such as a capacitor or choke coil, and the lead wires 9atl of each electronic component are connected to the holes of the printed circuit board 11.
Oa is inserted, and the terminal portion of the lead wire protrudes from the back surface of the printed circuit board 11 and is fixed by soldering.

Thus, the opening 1 formed in the center of the printed circuit board 11
The boss 12 of the bearing stand 4 is inserted into the bearing base 4, and the outer and inner edges of the printed circuit board 11 are brought into contact with the support part 13.13, and the lead wires 9a, 10a of the electronic components are
By inserting the terminal part of the terminal into the recess 5 of the bearing pedestal 4 and fixing the printed circuit board 11 in close contact with the surface of the bearing pedestal 4, the overall length of the motor can be shortened, and the insulation distance can be shortened due to soldering. Insert the end of the lead wire into the recess 5.
This prevents short circuits caused by contamination with iron powder, etc.

[Effect of idea]

As described above, the present invention includes a bearing stand having a protruding boss housing a bearing, and a printed circuit board having an electronic component attached to one side and the terminal portion of the lead wire of the electronic component protruding from the other side. In the motor electronic component mounting device, the boss of the bearing stand is inserted into an opening formed in the printed circuit board, and the printed circuit board is mounted with the other side facing the bearing stand, wherein the printed circuit board is mounted with the other side facing the bearing stand. The outer periphery of the surface facing the board and the periphery of the boss are each used as supporting parts for the printed circuit board, and a recess into which the terminal end of the lead wire is inserted is formed between the supporting parts, so that the printed board and the bearing are The bearing accommodating part of the stand can be overlapped in the axial direction, and the printed circuit board can be attached closely to the bearing stand, which has the effect of shortening the total axial length of the motor. Since the outer peripheral edge and the inner peripheral edge of the printed circuit board can be supported by both supporting parts, the printed circuit board can be firmly supported, and deformation or cracking of the printed circuit board can be prevented even when a drop impact or the like is applied.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of a conventional example, and FIG. 2 is a partially sectional front view of an embodiment of the present invention. 2...Bearing, 4...Bearing stand, 5...
... recess, 9 ... rectifying element, 10 ...
・Time signal element, 9a, 10a...Lead wire, 11
...Printed circuit board, 12...Boss, 1
3...Support part, 14...Opening hole.

Claims (1)

[Scope of utility model registration request] A bearing stand having a protruding boss housing a bearing, and a printed circuit board having an electronic component attached to one side and a terminal portion of a lead wire of the electronic component projected from the other surface, and formed on the printed circuit board. In an electronic component mounting device for a motor, the boss of the bearing pedestal is inserted into the opening and the other surface of the printed circuit board is mounted facing the bearing pedestal. and a circumferential edge of the boss as support parts for the printed circuit board, and a recess into which the terminal end of the lead wire is inserted is formed between the support parts.