KR101632693B1

KR101632693B1 - Abs motor

Info

Publication number: KR101632693B1
Application number: KR1020090083046A
Authority: KR
Inventors: 김군철; 박혁진; 신민정
Original assignee: 엘지이노텍 주식회사
Priority date: 2009-09-03
Filing date: 2009-09-03
Publication date: 2016-06-23
Also published as: KR20110024875A

Abstract

The present invention relates to a motor unit, A shaft portion rotated by the motor portion and including a concentric portion and an eccentric portion; A sleeve coupled to an outer periphery of the eccentric portion and having an upper bearing seat portion and a lower bearing seat portion eccentrically disposed on an outer circumferential surface thereof; An upper bearing coupled to the upper bearing seat portion; And a lower bearing coupled to the lower bearing seat portion, wherein the upper bearing seat portion and the lower bearing seat portion have a phase difference of 120 DEG in the circumferential direction.

Automobile, EV motor, needle bearing, eccentric, sleeve

Description

ABS motor for automobile {ABS MOTOR}

The present invention relates to an electric motor for an automobile.

Fig. 1 shows the installation state of the EB motor.

1, the ABS motor is a DC motor operated by an EBCM (electronic brake control module) during EBV operation. When the motor 1 of the EB motor is driven, the ABS motor 2 The bearing 3 provided eccentrically on the plunger 5 serves to depressurize the brake pressure of the locked wheel while moving the plunger 5 of the return pump 4 forward and backward.

Fig. 2 shows an example of a conventional ibis motor.

2 includes a motor unit 1, a motor shaft 2 rotated by the motor unit 1, a pair of bearings 3 fitted to the motor shaft 2, .

At this time, each of the bearings 3 should be installed to be eccentric because the plunger 5 of each return pump 4 should be moved forward and backward.

To this end, conventionally, the motor shaft 2 of the ibis motor is configured to be concentric with the center of the motor portion 1, and instead, each bearing 3 fitted to the motor shaft 2 is constituted by an eccentric bearing, Each bearing 3 is allowed to eccentrically move.

However, in the conventional ebbis motor, both of the bearings are formed of expensive eccentric bearings, which causes a rise in cost.

The present invention provides an automotive anti-vibration motor capable of reducing costs by applying a concentric bearing having a relatively low cost to two bearings coupled to a shaft portion, as compared with an eccentric bearing.

The present invention relates to an rivet motor for an automobile, A shaft portion rotated by the motor portion and including a concentric portion and an eccentric portion; A sleeve coupled to an outer periphery of the eccentric portion and having an upper bearing seat portion and a lower bearing seat portion eccentrically disposed on an outer circumferential surface thereof; An upper bearing coupled to the upper bearing seat portion; And a lower bearing coupled to the lower bearing seat portion, wherein the upper bearing seat portion and the lower bearing seat portion have a phase difference of 120 DEG in the circumferential direction.

The present invention provides an rivet motor for an automobile, wherein at least one of the two bearings uses a relatively inexpensive concentric bearing, thereby reducing the cost of the product.

In addition, since the two bearings are fastened to the shaft portion of the motor according to the embodiment of the present invention, the fastening operation is easy because the two bearings are fastened to each other via the sleeve designed in advance in accordance with the installation structure of the bearings. Can be shortened.

In addition, according to the embodiment of the present invention, since the ebis motor for automobiles is automatically assembled by eccentricity with a correct phase difference simply by inserting it into the sleeve when assembling each bearing, the reliability of the product can be increased.

Brief Description of the Drawings The advantages and features of the present invention, and how to achieve them, will be more apparent from the following description taken in conjunction with the accompanying drawings.

3 is an exploded cross-sectional view of an AV motor for an automobile according to an embodiment of the present invention, and FIG. 4 is an assembled cross-sectional view of FIG.

As shown in the drawings, an automotive hybrid motor (hereinafter referred to as "motor") according to an embodiment of the present invention includes a motor unit 10 and a shaft 11 rotated by the motor unit 10 .

The shaft portion 11 includes a concentric portion 11b concentric with the root portion 11a close to the motor portion 10 and an eccentric portion 11c eccentric to the concentric portion 11b In addition, the present invention may further include a narrow concentric portion 11d whose outer diameter is reduced at the uppermost position in the drawing compared to the concentric portion 11b and the eccentric portion 11c, and concentric with the concentric portion 11b.

The motor according to the embodiment of the present invention further includes a sleeve 20 which is press-fitted into the outer periphery of the eccentric portion 11c.

The sleeve 20 is formed with a bore 21 into which the eccentric portion 11c is inserted, and on the upper side thereof, a cylindrical upper bearing 30, And a lower bearing seat portion 40 of a cylindrical shape in which a lower bearing 40 described below is fitted is provided. In addition, a partition ring portion 24 for partitioning these sheets is provided between the upper bearing seat portion 22 and the lower bearing seat portion 40.

The sleeve 20 is designed such that the upper bearing seat portion 22 and the lower bearing seat portion 23 have a phase difference of 120 degrees in the circumferential direction. This can be confirmed in FIG.

Since the upper and lower seat portions of the sleeve 20 are preliminarily designed to have a phase difference of 120 degrees, if the upper bearing 30 and the lower bearing 40 are fitted into the respective seat portions, The phase difference of?

Accordingly, since it is not necessary to separately adjust the phase difference, the coupling operation of each bearing can be performed more easily than before, and the assembling time can be shortened.

The motor according to the embodiment of the present invention further includes an upper bearing 30 which is press-fitted into the outer periphery of the upper bearing seat portion 22. [

Here, the upper bearing 30 is a concentric bearing whose centers coincide with the inner and outer rings. Concentric bearings are relatively inexpensive compared to eccentric bearings (bearings whose centers of the inner and outer rings do not coincide), which leads to cost reduction.

The motor according to the embodiment of the present invention further includes a lower bearing 30 which is press-fitted into the outer periphery of the lower bearing seat portion 22. [

Here, the lower bearing 40 is a concentric bearing whose centers coincide with the inner and outer rings. Concentric bearings are less costly than eccentric bearings as described above, resulting in cost savings.

The upper bearing 30 and the lower bearing 40 are formed of needle bearings.

The motor according to the embodiment of the present invention includes a sleeve 20 and a sleeve 20. The motor 20 includes a sleeve 20 and an upper bearing seat 22, Prevention ring (50).

The release preventing ring 50 is resiliently press-fitted into the annular grooves 22a and 23a formed on the upper bearing seat portion 22 and the lower bearing seat portion 23, respectively.

The motor according to the embodiment of the present invention having the above-described configuration is omitted from the description of the assembly process and the operation description, because it is fully described in the configuration explanation.

It will be apparent to those skilled in the art that the embodiments of the invention described above are for the purpose of illustration and that various modifications, additions and substitutions are possible, without departing from the spirit and scope of the invention, And additions should be considered as falling within the scope of the following claims.

Fig. 1 is a diagram showing the relationship between an IV motor and a return pump

2 is an example of a conventional hybrid vehicle

3 is an exploded cross-sectional view of an rivet motor for an automobile according to the present invention

Figure 4 is a cross-

Fig. 5 is a cross-sectional view taken along the line A-A and B-B in Fig. 4, and is a view for explaining the phase difference between the upper bearing seat and the lower bearing seat

Description of the Related Art

10:

11: shaft portion 11a: shaft portion

11b: concentric portion 11c: eccentric portion

11d: Narrow concentric section

20: Sleeve

21: bore 22: upper bearing seat

23: lower bearing seat 24:

30: Upper bearing

40: Lower bearing

50:

Claims

A motor section;

A shaft portion rotated by the motor portion and including a concentric portion and an eccentric portion;

A sleeve coupled to an outer periphery of the eccentric portion and having an upper bearing seat portion and a lower bearing seat portion eccentrically disposed on an outer circumferential surface thereof;

An upper bearing coupled to the upper bearing seat portion; And

And a lower bearing coupled to the lower bearing seat portion,

Wherein the upper bearing seat portion and the lower bearing seat portion further have a phase difference of 120 DEG in the circumferential direction.

The method according to claim 1,

Further comprising a partition ring portion provided between the upper bearing seat portion and the lower bearing seat portion.

The method according to claim 1,

Wherein the upper bearing and the lower bearing are needle bearings.

The method according to claim 1,

Further comprising a release preventing ring coupled to upper and lower portions of the sleeve to prevent the upper bearing and the lower bearing from being separated from each other.

delete

3. The method according to claim 1 or 2,

Wherein the upper bearing and the lower bearing are concentric bearings whose centers coincide with the inner and outer rings, respectively.