JP2531122Y2 - Commutator motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention relates to a commutator motor used for a vacuum cleaner or the like.

2. Description of the Related Art Conventionally, an electrical connection diagram of a vacuum cleaner using a commutator motor of this type has been shown in FIG. That is,
A commutator motor (hereinafter abbreviated as a motor) 1, a control board 2 which is remotely controlled from outside to control the motor 1, and a cord 4 having a plug 3 attached to a tip thereof.
And a cord reel 5 for accommodating them, and are connected as follows. One power terminal 6 of the motor 1
Is at the control terminal 7 and the lead wire 8 of the control board 2,
One lead wire 9 of the code reel 5 is connected to the other power supply terminal 10 of the motor 1 and one power supply terminal 11 of the control board 2 to the lead wires 12 and 13. The other lead wire 14 of the code reel 5 is connected to the control board. The other power supply terminal 15 is connected to a lead wire 16 and the remote control terminals 17 and 18 of the control board 2 are connected to external switches (not shown) and the like via lead wires 19 and 20.

When the electric motor 1 is used for an electric blower of a vacuum cleaner,
The assembly of the main body of the vacuum cleaner consists of the motor 1 and the control board 2
After the cord reel 5 and the cord reel 5 are set on the vacuum cleaner main body, respectively, the lead wires 8, 12, 13, 16, 19, and 20 are connected. The stator 21 housed inside the casing 25 of the electric motor 1 has a core 22 and coils 23 and 24 wound therearound as shown in FIGS. 6 and 7.
On the rear surface of the casing 25, a brush holder 26 for holding a brush (not shown) for contacting the power terminals 6, 10 and the commutator of the rotor and terminals 27, 28 connected thereto are provided. Terminals of 21 coils 23 and 24 are power terminals
6 and 10 and the terminals 27 and 28 of the brush holder 26, respectively, for connection. Therefore, also in assembling the electric motor 1, after the stator 21 is pressed into the inside of the casing 25, the ends of the coils 23 and 24 are connected to the power terminals 6 and 10 of the electric motor 1 and the terminals 27 and 28 of the brush holder 26, respectively. Workers had to process lead wires and make connections.

Problems to be Solved by the Invention As described above, the conventional electric motor 1 has many lead wires and it is difficult to mechanize the connection of the lead wires. This was a major obstacle.

The present invention solves the above-mentioned problems, and attaches a control board to the motor casing, reduces the number of lead wires, reduces the number of manual parts, and facilitates automation and unmanned production. It is an object to provide a commutator motor.

Means for Solving the Problems In order to solve the above problems, the present invention provides a control board disposed on a side of the stator and a stator provided on the stator in a motor casing in which a stator and a rotor are housed. A pair of contact springs are provided for contacting the coil terminals and electrically connecting the electric circuit of the control board and the stator coil connected to the stator coil terminals, and a tip of the contact spring is provided in a recess provided on the control board. They are fitted.

Operation According to the above configuration, since the coil termination of the stator can be connected to the stator coil terminal provided on the stator by a single stator, if the coil is automatically connected by a coil winding machine, manual connection processing can be eliminated and automation can be performed. In addition, what was conventionally connected between the electric blower and the control board, the stator coil terminal and the electric circuit of the control board are automatically connected by the contact spring simply by inserting the stator and the control board into the casing,
In addition, the control board can be automatically prevented from coming off by fitting the tip of the contact spring into the recess of the control board, so that manual work only needs to be performed between the code reel and the control board. The width can be reduced by manpower, the automation of vacuum cleaner assembly becomes easier, and it has a great effect on productivity and cost reduction.

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

FIG. 1 is a sectional view when the commutator motor of the present invention is applied to an electric blower of a vacuum cleaner. In FIG.
Commutator electric blower (hereinafter abbreviated as electric blower) 31 is a fan
32, a stator 33, and a rotor 34 to which a fan 32 is attached.
Are housed in a resin casing 35, and the rotation of the rotor 34 causes air to flow, as indicated by arrows in FIG.
An air guide that is drawn into the fan 32 from an intake port 37 provided in the upper casing 36 and guides the wind into the casing 35.
It is guided from 38 to the side of the stator 33 and is discharged to the outside through an exhaust port 40 provided in the lower casing 39.

As shown in FIG. 2, the lower casing 39 is provided with brush holders 41, 42 made of a conductive material and holding brushes (not shown) that come into contact with the commutator of the rotor 34. A control board installation chamber 43 is provided in the lower casing 39, and a control board 44 having an electric circuit for power control of the electric blower 31 is attached to the control board installation chamber 43.

A pair of contact springs 45, 46 extending upward are provided at the bottom of the lower casing 39, and the upper portions of the contact springs 45, 46 pass through the communication holes 47 of the lower casing 39, and the control board installation chamber 43 The contact springs 45 and 46 fit into the concave portions 50 of the control board 44, respectively. As shown in FIG. 2, the control board 44 is provided with power terminals 51 and 52 and lead wires 53 and 54 for remote control.
Cooling fins 56 attached to the current control element 55 of the electric circuit are provided so as to protrude inside the casing 35 as shown in FIG.

As shown in FIG. 3, the stator 33 is formed by winding two coils 60, 61 around a resin winding frame 58 attached to a core 57. The holder-side terminals 62, 63 are provided so as to protrude corresponding to the brush holders 41, 42, and a further pair of stator coil terminals 64, 65 are protruded corresponding to the contact springs 45, 46. One end of each is connected to brush holder side terminals 62 and 63, and the other end of each of coils 60 and 61 is connected to stator coil terminals 64 and 65.
It is connected to the. The stator 33 is connected to these terminals
When 62 to 65 are inserted from the upper part of the casing 35 so as to correspond to the brush holders 41 and 42 and the contact springs 45 and 46, the brush holder terminals 62 and 63 are connected to the springs (not shown) of the brush holders 41 and 42. , And the stator coil terminals 64 and 65 are
It comes into pressure contact with the middle part of 5,46.

With such a configuration, when the stator 33 is installed in the casing 35, one ends of the coils 60, 61 are electrically connected to the brush holders 41, 42 through the brush holder side terminals 62, 63, and the other ends of the coils 60, 61 are also connected. The ends are stator coil terminals 64, 65
As a result, they are electrically connected to the conductive terminals 48, 49 of the control board 44 through the contact springs 45, 46. At this time, the electric connection of the vacuum cleaner main body is, as shown in FIG.
The cord 67 housed in the cord reel 68 with the electric blower 3 passes through lead wires 69, 70 connected to the other end.
The wires are connected to the power terminals 51 and 52 of the control board 44 attached to the first casing 35. The lead wires 53 and 54 for remote control on the control board 44 are connected to control devices such as switches (not shown).

As described above, the electric blower 31 is configured such that the coil holders 41 and 42 are mounted inside the casing 35, the rotor 34 is set, the control board 44 is inserted into the control board installation chamber 43, and the coils 60 and 61 are in contact with each other. Since it is electrically connected to the control board 44 through the springs 45 and 46, the work of connecting the lead wires inside the electric blower 31 by the operator can be eliminated, and the connection of the lead wires can be reduced even in the assembly of the vacuum cleaner main body. can do. Furthermore, simply inserting the control board 44 into the control board installation chamber 43, the tips of the contact springs 45, 46 fit into the recesses 50 of the control board 44, so that the control board 44 can be automatically prevented from coming off. it can. Also, in order to insert and fix the contact springs 45 and 46 into the recess 50 of the control board 44,
Even if vibration is generated by the rotation of the rotor 34, the contact springs 45, 46
And the concave portion (joining portion) 50 of the control board 44 do not slide,
Contact failure due to minute sliding wear can be prevented, and the reliability of the contact portion can be significantly improved with a simple configuration. Also, brush holder side terminals 62, 63 and stator coil terminals 64,
Since the stator 65 is provided on one surface of the stator 33, terminal processing of the coils 60 and 61 of the stator 33 can be performed by automatic processing by a coil winding machine. The cooling fins 56 are
The cooling effect is good because it is cooled by normal temperature air passing through the inside of the air blower, and the high temperature cooling fins 56 are inside the electric blower 31 and the casing 35 is made of resin, so safety against heat or electric shock is secured. it can.

Effect of the Invention As described above, according to the present invention, when the stator and the rotor are set in the casing and the control board is inserted on the side of the stator, the electric circuit of the control board and the stator coil are contacted by the contact spring. Electrical connection can be made, and the work of processing lead wires by the operator in the commutator motor can be eliminated. Furthermore, since the tip of the contact spring is fitted into the recess of the control board simply by inserting the control board into the side of the stator, the control board can be automatically prevented from coming off, and a stator coil terminal is provided on the stator. Thus, the terminal processing of the coils of the stator can be automated by the stator alone. In addition, since the contact spring is inserted into the concave portion of the control board and fixed, even if vibration is generated by rotation of the rotor, the contact spring and the concave portion (joint portion) of the control board do not slide. Can be prevented, and the reliability of the contact portion can be significantly improved with a simple configuration.

Furthermore, when the commutator motor of the present invention is applied to the electric blower of the vacuum cleaner, the assembly of the vacuum cleaner body also reduces the connection of the lead wires by attaching the control board to the commutator motor, thereby reducing the labor of the worker. It can reduce the number of workers and greatly promote unmanned and automated factories.

[Brief description of the drawings]

1 to 4 show an embodiment of the present invention.
The figure is a sectional view when a commutator motor is applied to an electric blower of a vacuum cleaner, FIG. 2 is a bottom plan view of a commutator electric blower, FIG. 3 is a bottom view of a stator, and FIG. 4 is a commutator electric blower. 5 is an electric connection diagram of a vacuum cleaner using a conventional commutator motor, FIG. 6 is a top view of a stator of a conventional commutator motor, and FIG. It is a bottom plan view of the same commutator motor. 31 ... commutator electric blower, 33 ... stator, 34 ... rotor, 35 ... casing, 43 ... control board installation room, 44 ... control board, 45,46 ... contact spring, 50
... recess, 60, 61 ... coil of stator, 62, 63 ... brush holder side terminal, 64, 65 ... stator coil terminal.

Claims (1)

(57) [Scope of request for utility model registration] 1. An electric circuit of the control board in contact with a control board disposed on a side of the stator and a stator coil terminal provided on the stator in an electric motor casing in which a stator and a rotor are housed. A commutator motor comprising: a pair of contact springs for electrically connecting the contact coil to a stator coil connected to the stator coil terminal; and a tip of the contact spring fitted into a recess provided in the control board.