JP2541034Y2 - Power supply device for motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a motor power supply device for a motor in which electronic components such as a capacitor and an inductor are mounted.

[Prior Art] Conventionally, the present applicant has proposed a motor power supply device shown in FIGS. 4 to 8.

Referring to the drawings, FIG. 4 is a front view showing the internal structure of the motor, FIG. 5 is a view taken in the direction of arrow A in FIG.
FIG. 4 is a sectional view taken along the line Y--Y of FIG. 4, and FIG. 8 is a perspective view of a resin housing.

Reference numeral 1 denotes a motor power supply device for rotating the rotor 9 and includes a holder 4, brush boxes 3a and 3b, an insulating resin housing 6 fixed to the holder 4, a capacitor 7 mounted on the housing 6, and the like. .

The brush boxes 3a and 3b are mounted on a holder 4, and brushes 2a and 2b are mounted on the brush boxes 3a and 3b.

As shown in FIG. 8, the housing 6 has a groove 6a for insertion into the holder 4 in the horizontal direction from the inner surface, and two grooves 6b for fitting the male connectors 5a and 5b. 6a
The housing 6 is provided vertically at the lower end, and the housing 6 is mounted by inserting the groove 6a into the holder 4, and at this time, the male connectors 5a and 5b are fitted into the groove 6b.

Further, a chamber 6c is provided outside and above the housing 6, and the condenser 7 is provided by being inserted into the chamber 6c. Terminals 7a and 7b, called feet of the capacitor 7, are inserted through holes 6d of the housing 6 to the brush boxes 3a and 3b.
Was soldered at the location shown in the figure.

[Problem to be Solved by the Invention] However, conventionally, the motor is provided in a place where the vibration condition is relatively strict, but recently the motorization of the vehicle system has progressed, and the motor has been installed in a place where the vibration is large. became.

Therefore, in the conventional mounting method of the capacitor, there is a problem in the durability of the capacitor under a bad condition of the vibration acceleration of 30 to 40 G, for example, the capacitor may be broken at an early stage.

An object of the present invention is to provide a motor power supply device that solves the problems of the related art.

Means for Solving the Problems In order to achieve the above object, the present invention provides a power supply device for a motor in which a capacitor is mounted on a housing made of insulating resin, and a holding piece and an opposing surface facing the holding piece. A holding portion for elastically holding the capacitor is formed on the outer surface of the housing, and the holding piece has a thick pressing portion having a capacitor receiving slope and an elastic connecting portion for connecting the pressing portion and the housing. It consists of a deformable thin part,
The opposing surface is formed integrally with the housing so as to contact almost the entire area of at least one side of the side surface of the capacitor.

[Operation] The capacitor elastically deforms the holding piece and is pushed into the space of the holding portion. The elasticity of the holding piece allows the capacitor to come into contact with the thick pressing portion and the opposing surface in a wide area and to be stable. The terminal (foot) is soldered to the brush box in this state.

The power supply lead wire can be connected to the motor power supply device by inserting the connector into the connector of the housing.

[Embodiment] The present invention will be described below with reference to an embodiment shown in the drawings.

1 to 3 show an embodiment of the present invention, and the same reference numerals as those in the conventional example shown in FIGS. 4 to 8 denote the same components.

In the figure, a motor power supply device 1 has the same configuration as the conventional example shown in FIGS. 4 to 8, and includes a holder 4, brush boxes 3a and 3b attached to the holder 4,
Brushes 2a, 2b attached to the brush boxes 3a, 3b, male or female connectors 5a, 5b extending and integrally provided with the brush boxes 3a, 3b, and an insulating resin housing provided on the holder 4. 6 and a capacitor 7 attached to the housing 6.

The housing 6 is formed integrally with the holder 4 as shown in FIGS. 2 and 3, and a holding portion 11 for the capacitor 7 is provided above and outside the housing.

As shown in FIG. 3, the holding portion 11 is provided with the opposing surface 3 and the holding piece.
The holding piece 12 is provided with a pressing portion 12a having a capacitor receiving slope 12c capable of engaging with the inserted capacitor, and the pressing portion 12a and the housing 6. And an elastically deformable thin portion 12b connecting the two.

When assembling the capacitor 7, the capacitor 7 pushes the slope 12 c of the holding piece 12 to elastically deform the thin portion 12 b of the holding piece 12 and pushes the capacitor 7 apart. The capacitor 7 is attached to the housing 6 by pressing and holding the terminal 7a, and the terminals 7a and 7b called feet are pulled out through the holes 6d and soldered 8 to the brush boxes 3a and 3b.

In this case, the capacitor 7 is pressed and held by the holding portion 12, in this example, by the holding piece 12 on the opposing surface 13, and is fixed and attached to the housing 6. The number of foot breaks is reduced. However, no foot break occurred under the vibration acceleration of 40G.

Note that the housing 6 may be formed separately from the holder 4 and attached to the holder 4.

[Effects of the Invention] As described above, in the present invention, since the capacitor is elastically pressed and clamped and attached to the housing, the capacitor is fixed to vibration and is not easily affected, so that it is possible to prevent the occurrence of foot breakage. It works.

Therefore, it is most suitable for mounting a motor in a place where vibration is large and in a device. Moreover, since the capacitor is fixed by the elasticity of the holding piece only by being pushed into the space of the holding portion, the workability of assembling the power supply lead wire is excellent. The amount of elastic deformation of the holding piece is relatively large, and the pressing force hardly changes even if the dimensions of the capacitor vary.Therefore, it is not necessary to select the capacitor when assembling. Withstand the use of.

In addition, it is needless to say that since the condenser can be provided in the motor, the whole apparatus can be downsized.

[Brief description of the drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a view in the direction of arrow A when the motor power supply device according to the present invention is applied to FIG. 4, and FIG. 2 is FIG. FIG. 3 is a view taken in the direction of arrow C, and FIG.
FIG. XX is a cross-sectional end view. 4 to 8 show a conventional example, FIG. 4 is a front view showing the internal structure of the motor, FIG. 5 is a view taken in the direction of arrow A in FIG.
4 is a sectional view taken along the line Y--Y in FIG. 4, and FIG. 8 is a perspective view of a resin housing. In the figure, 1 ... Motor power supply device, 2a, 2b ... Brush, 3a, 3b ...
Brush box, 4 ... Holder, 5a, 5b ... Male or female connector, 6 ... Insulating resin housing, 7 ... Capacitor, 8 ... Soldering, 10 ... Lead wire, 11 ... Holding part, 12 ... clamping piece, 13 ... facing surface.

Claims (1)

(57) [Scope of request for utility model registration] 1. A power supply device for a motor in which a capacitor is mounted on a housing made of an insulating resin, wherein a holding portion for elastically holding the capacitor between the holding piece and an opposing surface facing the holding piece includes: Formed on the outer surface of the housing, the holding piece includes a thick pressing portion having a capacitor receiving slope and an elastically deformable thin portion connecting the pressing portion and the housing. A power supply device for a motor, wherein the power supply device for a motor is formed integrally with a housing so as to be in contact with substantially the entire area in at least one direction of a side surface of the capacitor.