KR20140078793A - Sensor magnet device for motor - Google Patents

Sensor magnet device for motor Download PDF

Info

Publication number
KR20140078793A
KR20140078793A KR1020120147303A KR20120147303A KR20140078793A KR 20140078793 A KR20140078793 A KR 20140078793A KR 1020120147303 A KR1020120147303 A KR 1020120147303A KR 20120147303 A KR20120147303 A KR 20120147303A KR 20140078793 A KR20140078793 A KR 20140078793A
Authority
KR
South Korea
Prior art keywords
shaft
support member
motor
support
magnet
Prior art date
Application number
KR1020120147303A
Other languages
Korean (ko)
Inventor
이문재
Original Assignee
엘지이노텍 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Priority to KR1020120147303A priority Critical patent/KR20140078793A/en
Publication of KR20140078793A publication Critical patent/KR20140078793A/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

The present invention relates to a sensor magnet device for a motor that can be made light in weight and downsized in size.
According to an embodiment of the present invention, there is provided a sensor magnet apparatus for a motor, comprising: a shaft connected to a motor and having a step formed on one side; A support member in the form of a container having an insertion hole into which the shaft is inserted and in which the insertion hole is fixed to a step of the shaft; And a magnet accommodated in the space between the support member and the shaft and embedded therein.

Description

TECHNICAL FIELD [0001] The present invention relates to a sensor magnet device for a motor,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a sensor magnet device, and more particularly, to a sensor magnet device for a motor for detecting the drive of a motor.

BACKGROUND ART Transmission of an automobile includes a motor, which is manually operated according to a clutch operation of a user or is automatically operated in accordance with a speed by a mission.

Such a motor generally comprises a shaft and a rotor and a stator including a magnet fixed to the shaft, and a sensor magnet device is installed together for accurate control of the motor.

The sensor magnet device is connected to the shaft of the motor and rotates together with the motor. By detecting the displacement of the sensor magnet device using the Hall IC (Hall IC), it is possible to detect the driving state of the motor .

In recent years, efforts have been made to reduce the weight of components in automobiles and miniaturize the size of the automobile, and the above-described sensor magnet apparatus also has problems of weight reduction and miniaturization as accessories of motors.

SUMMARY OF THE INVENTION The present invention provides a sensor magnet unit for a motor which is light in weight and small in size.

In order to achieve the above object, according to an embodiment of the present invention, there is provided a motor comprising: a shaft connected to a motor and having a step formed on one side; A support member in the form of a container having an insertion hole into which the shaft is inserted and in which the insertion hole is fixed to a step of the shaft; And a magnet accommodated in the space between the support member and the shaft and embedded in the space.

Wherein the supporting member has one side contacting the step portion of the shaft and having a predetermined height along the side surface of the shaft to form the insertion hole therein; A support plate bent from the other side of the support tube; And a guide portion bent from the outer side of the support plate to provide a space for accommodating the magnet.

Wherein the support member comprises: a support plate having the insertion hole formed at a center thereof; And a guide portion bent from the outer side of the support plate to provide a space for accommodating the magnet.

Wherein the supporting member has one side contacting the step portion of the shaft and having a predetermined height along the side surface of the shaft to form the insertion hole therein; A support plate bent from one side of the support tube; And a guide portion bent from the outer side of the support plate to provide a space for accommodating the magnet.

According to another embodiment of the present invention, there is provided a motor including a shaft connected to a motor and having a step formed at one side thereof; A support member having a flat plate shape and having a support pipe formed at one side of the shaft and having a predetermined height along the side surface of the shaft and forming an insertion hole into which the shaft is inserted; And a magnet inserted into the support tube to be installed on the support member.

The support member includes a support plate bent from one side of the support tube.

The support member includes a support plate extending from an outer side of a predetermined height from one side of the support tube.

The support member is formed by press working.

According to the present invention, the volume of the magnet can be reduced, so that the weight of the sensor magnet device as a whole is reduced and the size is reduced.

Further, according to the present invention, since the support member and the magnet are fixed using the step portion, the pressure input of the magnet to the shaft is improved.

In addition, by reducing the volume of the magnet, the material cost for the magnet can be reduced.

1 is a side sectional view of a sensor magnet unit for a motor according to a first embodiment of the present invention,
2 is a top view of a sensor magnet apparatus for a motor according to a first embodiment of the present invention,
3 is a side sectional view of a sensor magnet apparatus for a motor according to a second embodiment of the present invention,
4 is a top view of a sensor magnet apparatus for a motor according to a second embodiment of the present invention,
Figs. 5 and 6 are views showing another embodiment of the support member shown in Fig. 3,
7 is a side sectional view of a sensor magnet apparatus for a motor according to a third embodiment of the present invention,
8 is a view showing an upper surface of a sensor magnet apparatus for a motor according to a third embodiment of the present invention, and Fig.
9 is a view showing another embodiment of the support member shown in Fig.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. The term "and / or" includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

Likewise, when an element such as a layer, film, region, plate, or the like is referred to as being "on" another element, it includes not only the element directly above another element, . Conversely, when an element is referred to as being "directly on" another element, it means that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant description thereof will be omitted.

FIG. 1 and FIG. 2 show a sensor magnet unit for a motor according to a first embodiment of the present invention, each showing a side end surface and an upper surface.

1 and 2, a sensor magnet apparatus according to a first embodiment of the present invention includes a shaft 10, a support member 20, and a magnet 30. [

The shaft 10 is connected to a shaft (not shown) of the motor and rotates together with the shaft of the motor, and the support member 20 fixes the magnet 30 to the shaft 10.

The support member 20 is disposed so as to be in line with the side surface of the shaft 10 formed to have a constant width and is formed such that the contact portion with the shaft 10 is bent in a "C" shape. According to the shape of the support member 20, the pressure input of the magnet 30 is improved.

In the sensor magnet apparatus of the first embodiment as shown in Figs. 1 and 2, the bending structure of the shaft 10 improves the pressure input of the magnet 30, while the overall width d1 of the sensor magnet apparatus is There is a problem that can be increased. This is because the support member 20 is continuously and repeatedly folded so that the width of the support member 20 itself is widened.

In addition, since the magnet 30 must be inserted into the support member 20 having a wide width, the volume of the magnet 30 itself must be increased. This causes an increase in the weight of the magnet 30, .

Since the support member 20 is disposed in a straight line with the side surface of the shaft 10 so that the coupling force between the shaft 10 and the support member 20 is weak and the shaft 10, The shaft 10 may be detached from the fixed position.

In response to such a problem, the present invention proposes a second embodiment in which the weight of the sensor magnet apparatus can be reduced in weight and size can be reduced while improving the pressure input of the magnet 30 by changing the shape of the support member 20 do.

FIG. 3 is a side sectional view of a sensor magnet apparatus for a motor according to a second embodiment of the present invention, and FIG. 4 is a top view thereof.

3 and 4, a sensor magnet apparatus for a motor according to a second embodiment of the present invention includes a shaft 100, a support member 200, and a magnet 300.

The shaft 100 is connected to a shaft (not shown) of the motor and rotates together with the shaft of the motor.

The shaft 100 includes a step portion 101 on one side. The width w1 of the shaft 100 on the side where the step portion 101 is formed can be made narrower than the width w2 of the other side.

A support member 200 in the form of a container having an insertion hole 201 at its center is fixed to the step portion 101 of the shaft 100. Specifically, the peripheral portion of the insertion hole 201 is fixed by the step portion 101 of the shaft 100.

3, the support member 200 is constituted by a support tube 202, a support plate 203, and a guide portion 204. In this embodiment,

The support tube 202 is in contact with one end of the step portion 101 of the shaft 100 and has a predetermined height along the side surface of the shaft 100 to form an insertion hole 201 therein.

The support plate 203 is formed by being bent from the other side of the support tube 202, that is, the side opposite to the side contacting the step portion 101. In the embodiment of FIG. 3, the support plate 203 is bent to be perpendicular to the support tube 202, but the angle of bending is not limited thereto, but may be formed at any angle as far as it can support the magnet 300.

The guide portion 204 is bent from the outer side of the support plate 203 to provide a space for accommodating the magnet 300 so that the support member 200 has a container shape. The bending angle between the guide portion 204 and the support plate 203 may be formed at various angles as well as the bending angle of the support plate 203 and the support tube 202. In addition, the bending structures to be described subsequently will be made clear in advance that the angle is not limited to a specific angle, and redundant explanations thereof will be omitted.

The magnet 300 can be received in the space between the support member 200 and the shaft 100 and embedded therein. In the embodiment of FIG. 4, the magnet 300 is shown as a ring magnet, but various kinds of magnets may be used as the magnet 300.

Figs. 5 and 6 are views showing other embodiments of the support member 200 shown in Fig.

In the embodiment of FIG. 5, the support member 210 has the insertion hole 211 at the center portion, which is the same as the embodiment of FIG. 3, but the support tube 202 of FIG. 3 is omitted.

5 includes a support plate 212 formed with an insertion hole 211 at a central portion thereof and a guide portion bent from the outer side of the support plate 212 to provide a space for accommodating the magnet 300 213).

In the embodiment of FIG. 6, the support member 220 has the insertion hole 221 at the central portion thereof, which is the same as that of the embodiment of FIG. 3. In FIG. 3, the support tube 202 protrudes to the lower portion of the support member 200 While the support tube 222 protrudes into the support member 220 in FIG.

6, the support tube 222 is formed so as to have a predetermined height along the side surface of the shaft 100, one side of which is in contact with the step portion 101 of the shaft 100, Holes 221 are formed.

The support plate 223 is formed by bending from one side of the support tube 222, that is, from the side end contacting with the step unit 101, and the guide unit 224 is formed in the same manner as the embodiment of FIG.

Referring to FIGS. 1 and 2, the sensor magnet apparatus according to the second embodiment of the present invention shown in FIGS. 3 and 4 is compared with the sensor magnet apparatus according to the first embodiment. The basic constitution including the shaft 10, the support member 20, and the magnet 30 is the same as that of the second embodiment.

However, in the second embodiment, as shown in FIGS. 3 and 4, the shaft 100 is not formed with a constant width, but has a step portion 101 at the upper portion, (200) is fixed, the size of the entire sensor magnet apparatus is reduced.

In addition, since the supporting member 200 does not have a multiple bending shape, the area occupied by the supporting member 200 at the portion in contact with the shaft 100 is reduced. Therefore, the volume of the magnet 300 is greatly reduced as compared with the magnet 30 of FIG. 1, so that the overall width d2 of the sensor magnet apparatus is reduced and the weight is reduced to the entire weight. In addition, as the volume of the magnet 300 is reduced, the material cost for the magnet 300 can be reduced.

The magnet 300 of FIG. 3 has the same thickness as the magnet 30 of FIG. 1, but due to the reduction of the width of the shaft 100 due to the formation of the step unit 101 and the reduction of the area of the support member 200 It can be seen that the total volume is greatly reduced.

In the present invention, since the support member 200 can be firmly supported by using the step portion 101, the load of the magnet 300 is also supported by the support member 200 and the step portion 101 And the pressure input surface of the magnet 300 are effective.

On the other hand, the support member 20 of the first embodiment shown in Figs. 1 and 2 has to be formed by a drawing process due to the multi-curved shape in which the bent portions are adjacent to each other, so that the process is troublesome and the manufacturing cost is high There is no other choice. However, in the present invention, since the support member 200 is formed in a simple bent shape, it can be formed by press working. Therefore, the present invention has the effect of simplifying the process and reducing the manufacturing cost as compared with the first embodiment in which drawing processing is required due to the nature of the press working.

FIGS. 7 and 8 are views showing a sensor magnet apparatus according to a third embodiment of the present invention, wherein FIG. 7 is a side sectional view and FIG. 8 is a top view thereof.

7 and 8, the structure of the shaft 100 having the stepped portion 101 and the magnet 300 are the same as those of FIGS. 3 and 4, and a description thereof will be omitted.

7 and 8, the support member 230 of the sensor magnet apparatus according to the third embodiment of the present invention is composed of a support tube 232 and a support plate 233.

The support tube 232 is formed so as to have a predetermined height along the side surface of the shaft 100 and one side of which is in contact with the step portion 101 of the shaft 100. The support tube 232 has an insertion hole 231).

The support plate 233 is formed by bending from one side of the support tube 232, that is, from the side end in contact with the step jaw portion 101.

9 is a view showing another embodiment of the support member 230 shown in Fig.

9, it is the same as the embodiment of FIG. 7 that the support member 240 is composed of the support tube 242 forming the insertion hole 241 and the support plate 243, The bending position is different from that in Fig.

9, the support plate 243 is formed so as to extend from an outer side of a predetermined height from one side of the support tube 242, that is, a side end in contact with the step jaw portion 101. As shown in Fig.

Although not shown in the drawing, the sensor magnet device according to the present invention may be combined with a Hall IC for detecting a displacement of the sensor magnet device. At this time, by arranging the Hall IC on the magnet 300, The width size can be prevented from increasing.

The structure of the shaft, support member, and magnet of the present invention as described above can be applied to a sensor magnet apparatus as well as a motor having a structure in which a shaft and a magnet are coupled.

In addition, the scope of application is not limited to the motor of the automotive transmission, and it can be applied to any motor that senses the drive.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

10, 100: Shaft
101:
20, 200, 210, 220, 230, 240:
201, 211, 221, 231, 241: insertion hole
202, 222, 232, 242: support pipe
203, 212, 223, 233, 243:
204, 213, and 224:
300: Magnet

Claims (8)

A shaft connected to the motor and having a step formed on one side;
A support member in the form of a container having an insertion hole into which the shaft is inserted and in which the insertion hole is fixed to a step of the shaft; And
A magnet disposed in the space between the support member and the shaft and embedded in the space,
And a sensor magnet unit for a motor.
The method according to claim 1,
Wherein the support member comprises:
A support tube having one side contacting the step of the shaft and having a predetermined height along a side surface of the shaft to form the insertion hole therein;
A support plate bent from the other side of the support tube; And
A guide portion bent from the outer side of the support plate to provide a space for accommodating the magnet,
And a sensor magnet unit for a motor.
The method according to claim 1,
Wherein the support member comprises:
A support plate having the insertion hole formed at its center; And
A guide portion bent from the outer side of the support plate to provide a space for accommodating the magnet,
And a sensor magnet unit for a motor.
The method according to claim 1,
Wherein the support member comprises:
A support tube having one side contacting the step of the shaft and having a predetermined height along a side surface of the shaft to form the insertion hole therein;
A support plate bent from one side of the support tube; And
A guide portion bent from the outer side of the support plate to provide a space for accommodating the magnet,
And a sensor magnet unit for a motor.
A shaft connected to the motor and having a step formed on one side;
A support member having a flat plate shape and having a support pipe formed at one side of the shaft and having a predetermined height along the side surface of the shaft and forming an insertion hole into which the shaft is inserted; And
A magnet disposed on the support member so as to surround the support tube,
And a sensor magnet unit for a motor.
6. The method of claim 5,
Wherein the support member includes a support plate bent from one side of the support pipe.
6. The method of claim 5,
Wherein the support member includes a support plate extending from an outer side of a predetermined height from one side of the support tube.
8. The method according to any one of claims 1 to 7,
Wherein the supporting member is formed by press working.
KR1020120147303A 2012-12-17 2012-12-17 Sensor magnet device for motor KR20140078793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120147303A KR20140078793A (en) 2012-12-17 2012-12-17 Sensor magnet device for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120147303A KR20140078793A (en) 2012-12-17 2012-12-17 Sensor magnet device for motor

Publications (1)

Publication Number Publication Date
KR20140078793A true KR20140078793A (en) 2014-06-26

Family

ID=51130165

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120147303A KR20140078793A (en) 2012-12-17 2012-12-17 Sensor magnet device for motor

Country Status (1)

Country Link
KR (1) KR20140078793A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170054907A (en) * 2015-11-10 2017-05-18 엘지이노텍 주식회사 Shaft assembly for motor and motor having the same
CN109923769A (en) * 2016-11-16 2019-06-21 三菱电机株式会社 Device for detecting rotational position

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170054907A (en) * 2015-11-10 2017-05-18 엘지이노텍 주식회사 Shaft assembly for motor and motor having the same
CN109923769A (en) * 2016-11-16 2019-06-21 三菱电机株式会社 Device for detecting rotational position
CN109923769B (en) * 2016-11-16 2021-06-11 三菱电机株式会社 Rotational position detecting device
US11204261B2 (en) 2016-11-16 2021-12-21 Mitsubishi Electric Corporation Rotational position detection device

Similar Documents

Publication Publication Date Title
US10583858B2 (en) Steering sensor assembly
KR20170080732A (en) Display device
US10367397B2 (en) Controller-integrated rotary electric machine and method for manufacturing the same
US11224978B2 (en) Robot
KR101285412B1 (en) Driving apparatus for camera lens assembly
EP2751825A1 (en) Bonded keyboard and method for making the same
US8951131B2 (en) Rotation transmitting device and motor
JP5763792B2 (en) Gearbox bracket and power seat slide device
KR20140078793A (en) Sensor magnet device for motor
WO2013191002A1 (en) Pump-securing structure and pump
EP2843809B1 (en) Housing for an electric motor having low vibration
EP2743663B1 (en) Torque sensor
KR20150034984A (en) Stator assembly and torque sensor including the same
US8136810B1 (en) Sheet alignment and ejection mechanism
EP3361125A1 (en) Gear transmission device
KR20090120988A (en) Camera module
EP1939597A1 (en) Electric power steering device
CN219514165U (en) Camera module
ATE435185T1 (en) DRIVE UNIT WITH TWO MOTORS, ESPECIALLY FOR A HOIST
JP3867584B2 (en) Imaging unit and electronic device
CN111566449A (en) Sensing device
US8570608B2 (en) Scanner, has tab comprising tab body extending from bottom panel and resilient absorbing portion connected to tab body, and resilient absorbing portion resisting loading panel to prevent movement of loading panel
CN203850960U (en) Anti-falling type motor device
KR102113735B1 (en) Torque sensor
CN110355714B (en) Torsion device

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application