KR20130006008A

KR20130006008A - Base assembly for motor and motor including the same

Info

Publication number: KR20130006008A
Application number: KR1020110067781A
Authority: KR
Inventors: 강승규
Original assignee: 삼성전기주식회사
Priority date: 2011-07-08
Filing date: 2011-07-08
Publication date: 2013-01-16

Abstract

The present invention relates to a base assembly for a motor and a motor including the same, comprising: a base member on which a shaft system of the motor is mounted; At least one boss protruding from the base member to fix the pulling plate; And a pulling plate coupled to the base member to prevent over-injury of the rotating member of the motor and having at least one fixing hole into which the boss is press-fitted.

Description

Base assembly for a motor and a motor including the same

The present invention relates to a base assembly for a motor and a motor including the same, and more particularly, to a base assembly for a motor and a motor including the same to improve the performance of the pulling plate to improve performance.

A hard disk drive (HDD), which is one of information storage devices of a computer, is a device that reproduces data stored on a disk using a magnetic head or records data on a disk.

In such a hard disk drive, the base member is provided with a head drive unit, that is, a head stack assembly (HSA), to move the magnetic head on the disc, and the magnetic head rises a predetermined height from the recording surface of the disc by the head drive unit. It performs its function while moving to the desired position.

In addition, a hard disk drive requires a disk drive capable of driving a disk, and a small spindle motor is used for the disk drive.

The compact spindle motor has a rotating member and a fixing member, and the rotating member rotates around the fixing member, and requires a predetermined floating force for the rotation of the rotating member.

However, when a force greater than the flotation force necessary for rotation of the rotating member is generated, that is, an over-injury occurs, the rotating member does not rotate normally or is detached from the fixing member, resulting in a fatal result.

In order to solve this problem, a magnet mounted on the motor and a pulling plate acting on the attraction force are coupled to the base member to prevent over-injury of the rotating member. There was a problem of separation.

Therefore, there is an urgent need for a study of maximizing performance and lifespan by improving the pulling force of a pulling plate that prevents over-injury of a rotating member in a spindle motor.

It is an object of the present invention to provide a base assembly for a motor and a motor including the same to maximize the extraction force of the pulling plate to prevent over-injury of the rotating member to improve performance and life.

Motor base assembly according to an embodiment of the present invention includes a base member on which the shaft system of the motor is mounted; At least one boss protruding from the base member to fix the pulling plate; And a pulling plate coupled to the base member to prevent over-injury of the rotating member of the motor and having at least one fixing hole into which the boss is press-fitted.

The boss of the base assembly for a motor according to an embodiment of the present invention may be arranged to draw a circumferential shape so as to correspond to a fixing hole provided in the pulling plate.

The pulling plate of the base assembly for a motor according to an embodiment of the present invention may be continuously formed in the circumferential direction so as to correspond to the magnet generating the rotational driving force of the motor.

The fixing hole of the base assembly for a motor according to an embodiment of the present invention may be provided in a shape corresponding to the boss.

The diameter of the fixing hole of the base assembly for a motor according to an embodiment of the present invention may be smaller than the diameter of the boss so that the boss is pressed in and fixed.

The boss of the base assembly for the motor according to an embodiment of the present invention may be pressed into the fixing hole and fixed to protrude upward of the fixing hole.

The boss projecting to the upper side of the fixing hole of the motor base assembly according to an embodiment of the present invention is pressed to fix the pulling plate to form a head portion having a diameter larger than the fixing hole to be caught on the upper surface of the pulling plate. Can be.

In the pull plate of the motor base assembly according to an embodiment of the present invention, an upper end of the fixing hole may include a seating groove in which the head part is seated.

Motor base assembly according to another embodiment of the present invention includes a base member on which the shaft system of the motor is mounted; At least one boss protruding from the base member to fix the pulling plate; A pulling plate coupled to the base member to prevent over-injury of the rotating member of the motor and having at least one fixing hole into which the boss is fitted; And a head portion of which the upper end of the boss is inserted into the fixing hole and then protrudes to the upper side of the fixing hole, and is pressed to fix the pulling plate to have a diameter larger than that of the fixing hole so as to be caught on an upper surface of the pulling plate. It may include.

Motor base assembly according to another embodiment of the present invention includes a base member on which the shaft system of the motor is mounted; A pulling plate coupled to the base member to prevent over-injury of the rotating member of the motor; And a fixing piece that is simultaneously inserted into and fixed to a fixing hole provided in the pulling plate and the base member and provided in a position corresponding to the fixing hole.

The fixing piece of the base assembly for a motor according to an embodiment of the present invention may have a head portion which is formed to have a diameter larger than the fixing hole and is caught on an upper surface of the pulling plate.

The fixing piece of the base assembly for the motor according to an embodiment of the present invention may be pressed into the fixing hole and the fixing groove.

The diameter of the fixing piece of the base assembly for the motor according to an embodiment of the present invention may be smaller than the diameter in the fixing hole and the fixing groove.

The fixing piece of the base assembly for a motor according to an embodiment of the present invention includes a male thread on an outer circumferential surface, and a female thread is provided on an inner circumferential surface of the fixing base and the fixing groove can be screwed together.

The motor according to an embodiment of the present invention includes a base assembly for a motor according to an embodiment of the present invention; A core coupled to the base member, the core being wound to generate a rotational driving force; And a hub coupled to the shaft system and having a magnet facing the coil.

According to the motor base assembly and the motor including the same according to the present invention, the pulling force of the pulling plate is improved to prevent over-injury of the rotating member.

In addition, it is possible to maximize the performance and life by ensuring a stable rotation.

In addition, since the adhesive is not used, no gas is generated, thereby solving the problem caused by the assembly of the component using the adhesive.

1 is a schematic cross-sectional view showing a motor according to a first embodiment of the present invention,
2 is a schematic perspective view showing a base member provided in the motor according to the first and second embodiments of the present invention;
3 is a schematic cutaway perspective view and enlarged view showing a pulling plate provided in the motor according to the first to fourth embodiments of the present invention;
4 is a schematic perspective view showing a coupling relationship between a base member and a pulling plate provided in the motors according to the first and second embodiments of the present invention;
FIG. 5 is a schematic enlarged cross-sectional view illustrating that a head part is formed by a pressing process after coupling of a base assembly for a motor according to first and second embodiments of the present invention;
6 is a schematic cross-sectional view showing a motor according to a second embodiment of the present invention;
7 is a schematic cross-sectional view showing a motor according to a third embodiment of the present invention,
8 is a schematic perspective view showing a base member provided in the motor according to the third and fourth embodiments of the present invention;
9 is a schematic perspective view showing a coupling relationship between a base member and a pulling plate provided in the motors according to the third and fourth embodiments of the present invention;
10 is a schematic cross-sectional view showing a motor according to a fourth embodiment of the present invention.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. 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 inventive concept. Other embodiments falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.

The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.

1 is a schematic cross-sectional view showing a motor according to a first embodiment of the present invention.

Referring to FIG. 1, the motor 100 according to the first embodiment of the present invention includes a base member 140 having a sleeve 120, a hub 130, and a boss 141 supporting the shaft 110. It may include a pulling plate 150 having a fixing hole (151).

First, when defining the term for the direction, the axial direction refers to the up and down direction relative to the shaft 110, as seen in Figures 1, 6, 7, and 10, the radially outer and inner direction is the shaft 110 The center direction of the shaft 110 may mean the outer end direction of the hub 130 or the outer end of the hub 130 with respect to.

The sleeve 120 may be a component that supports the rotating member including the shanghai shaft 110 by being coupled with the base member 140 into which the core 160 to be described below is inserted and fixed. That is, the shaft system of the motor is mounted on the base member 140.

The sleeve 120 may support the shaft 110 so that the upper end of the shaft 120 protrudes upward in the axial direction, and forge Cu or Al, or sinter Cu-Fe alloy powder or SUS powder. Can be formed.

Here, the shaft 110 is inserted to have a small gap with the shaft hole of the sleeve 120, the micro gap is filled with oil and at least one of the outer diameter of the shaft 110 and the inner diameter of the sleeve 120 The radial dynamic pressure grooves 122 formed in the hub 130 may smoothly support the rotation of the hub 130.

The radial dynamic pressure groove 122 is formed on the inner surface of the sleeve 120 which is the inside of the shaft hole of the sleeve 120, and forms a pressure to be deflected to one side when the shaft 110 rotates.

However, the radial dynamic pressure groove 122 is not limited to being provided on the inner side of the sleeve 120 as mentioned above, it is also possible to be provided on the outer diameter of the shaft 110, the number is also limited Make sure you don't.

Here, the cover plate 180 for accommodating the oil may be coupled to the sleeve 120 in the axially lower portion of the sleeve 120 while maintaining a gap, and the oil may be coupled to the gap. The cover plate 180 may serve as a bearing for supporting the lower surface of the shaft 110 by receiving oil in the gap between the sleeve 120.

In addition, the oil is a gap between the shaft 110 and the sleeve 120, a gap between the hub 130 and the sleeve 120 to be described later, the cover plate 180 and the shaft 110 and The gap between the sleeves 120 may be continuously filled to form a full-fill structure as a whole.

Hub 130 is a rotating structure rotatably provided with respect to the base member 140, which will be described later, to be provided on the inner circumferential surface of the annular magnet 190 corresponding to each other at a predetermined interval with the core 170 to be described later Can be.

In addition, the hub 130 is a first cylindrical wall portion 132 to be fixed to the upper end of the shaft 110, a disc portion 134 extending radially outward from the end of the first cylindrical wall portion 132, The second cylindrical wall portion 136 may protrude downward from a radially outer end of the disc portion 134, and the magnet 190 may be coupled to an inner circumferential surface of the second cylindrical wall portion 136.

In addition, the hub 130 may allow the oil to be sealed between the upper outer surface of the sleeve 120, and may have a circumferential wall portion 138 extending downward in the axial direction to seal the oil. .

That is, the circumferential wall portion 138 may protrude from one surface of the hub 130, which is a rotating member, to allow oil to be sealed between the sleeve 120, which is a fixing member, and an upper side of the sleeve 120, which is a fixing member. It may be formed extending along the outer surface of the sleeve 120 as the fixing member so that the interface of the oil is formed between the outer surface.

The base member 140 may be a fixed structure including a coil 170 for generating an electromagnetic force of a predetermined size when power is applied and a core 160 on which the coil 170 is wound.

The core 160 is fixedly disposed on an upper portion of the base member 140 having a printed circuit board (not shown) on which a pattern circuit is printed, and is disposed on an upper surface of the base member 140 corresponding to the winding coil 170. A plurality of coil holes 142 (see FIG. 2) having a predetermined size may be formed to expose the winding coil 170 downward, and the winding coil 170 may be provided with an external power supply. It may be electrically connected to).

The base member 140 has an outer circumferential surface of the sleeve 120 fixed thereto, and a core 160 to which the coil 170 is wound may be inserted, and an inner surface of the base member 140 or the sleeve 120 may be inserted therein. It can be assembled by applying an adhesive to the outer surface of the.

Here, the base member 140 is provided with a boss 141 may be inserted into the fixing hole 151 of the pulling plate 150 to be described later to fix the pulling plate 150, the boss 141 The fixing hole 151 will be described later with reference to FIGS. 2 to 5.

Pulling plate 150 is a component that the magnet 190 and the attraction force is coupled to the hub 130 to prevent the over-injury of the shaft 110 and the hub 130.

The shaft 110 and the hub 130, which is a rotating member of the motor 100, according to an embodiment of the present invention should rise to a predetermined height for stable rotation, but adversely affect the performance when an over-injury occurs above a designed injury height. Can have

In this case, a pulling plate 150 may be coupled to one surface of the base member 140 to prevent an over-injury of the shaft 110 and the hub 130 which are rotating members, and the pulling plate 150 and the It is possible to prevent over-injury of the rotating member by the attraction force acting between the magnets 190.

A coupling structure of the pulling plate 150 and the base member 140 will be described later with reference to FIGS. 2 to 5.

2 is a schematic perspective view showing a base member provided to the motor according to the first and second embodiments of the present invention, Figure 3 is a pulling plate provided to the motor according to the first to fourth embodiments of the present invention 4 is a schematic cutaway perspective view and an enlarged view, FIG. 4 is a schematic perspective view illustrating a coupling relationship between a base member and a pulling plate provided in a motor according to the first and second embodiments of the present invention, and FIG. It is a schematic enlarged cross-sectional view showing that the head portion is formed by the pressing process after the coupling of the base assembly for the motor according to the first and second embodiments.

Referring to FIG. 2, the base member 140 provided to the motor 100 according to the first and second embodiments of the present invention may include a disk arranging portion 146, a motor seating portion 148, and a head seating portion 149. ) May be included.

The disk disposition unit 146 is a portion in which a disk coupled to the motor 100 is disposed, and the disk in which data is stored may be positioned on the upper portion of the disk disposition unit 146.

A motor seating portion 148 may be formed at the center of the disc placement portion 146, and the motor seating portion 148 may be a core wound around the coil 170 of the motor 100. It may be provided with a protrusion 147 having a hollow and protruding so that the 160 may be coupled.

At least one coil hole 142 may be formed at the motor seating part 148 to allow a lead line of the coil 170 to pass therethrough, and lead out of the coil 142 drawn out through the coil hole 142. The line may be combined with an external printed circuit board (not shown).

The motor seating part 148 may include a stepped part 143 formed stepwise on one surface corresponding to the magnet 190 coupled to one surface of the hub 130 of the motor 100, and the stepped part At least one boss 141 may be provided along an edge of 143 to fix the fixing hole 151 provided in the pulling plate 150 to be coupled to the pulling plate 150.

That is, the boss 141 may be disposed roundly at predetermined intervals in the circumferential direction along the position where the pulling plate 150 is mounted in the base member 140, and the number of bosses 141 is not limited. The boss 141 may be arranged to draw a circumferential shape so as to correspond to the fixing hole 151 provided in the pulling plate 150.

In addition, since the boss 141 may be press-fitted into the fixing hole 151, the boss 141 may be provided in a shape corresponding to the fixing hole 151. In addition, since the boss 141 may be press-fitted into the fixing hole 151, the diameter of the boss 141 may be larger than the diameter of the fixing hole 151.

In addition, the boss 141 may be pressed into the fixing hole 151 and may protrude upward of the fixing hole 151, and the protruding portion may be pressurized to have a diameter larger than that of the fixing hole 151. The portion 141a may be formed.

In this case, the head portion 141a is firmly caught on the upper surface of the pulling plate 150, and the upper end of the fixing hole 151 does not protrude outward from the fixing hole 151 so that the head portion 141a does not protrude outward. It may be provided with a large diameter is provided with a seating groove (151a) for the head portion (141a) is seated.

Here, the head seating unit 149 may be formed adjacent to the disk arrangement unit 146, and a head driving unit (not shown) for reproducing data stored in the disk may be coupled.

Referring to FIG. 3, the pulling plate 150 provided to the motors 100 according to the first to fourth embodiments of the present invention may include an upper portion 152 and an extension 154.

In other words, the pulling plate 150 is the upper portion 152 coupled to the upper surface of the stepped portion 143 formed in the motor seat 146 and the stepped portion 143 at the end of the upper portion 152. It may be formed of an extension 154 extending to the side of the.

Here, the pulling plate 150 may be continuously formed in the circumferential direction so as to correspond to the magnet 190 coupled to the hub 130 of the motor 100.

At least one fixing hole 151 may be provided in the upper portion 152 of the pulling plate 150 at a predetermined interval in the circumferential direction, and the boss provided in the base member 140 may be provided in the fixing hole 151. 141 is press-fitted. Accordingly, the fixing hole 151 may be disposed to correspond to the arrangement shape of the boss 141.

In addition, a seating groove 151a may be formed at an upper end of the fixing hole 151 to have a diameter slightly larger than that of the fixing hole 151, and the mounting groove 151a may be disposed above the fixing hole 151. By pressing the protruding boss 141 to fix the pulling plate 150, a head portion 141a having a diameter larger than the fixing hole 151 may be formed to be seated in the seating groove 151a. .

Since the boss 141 may be press-fitted into the fixing hole 151, the diameter of the boss 141 may be larger than the diameter of the fixing hole 151.

The pulling plate 150 may be made of a ferromagnetic material capable of being magnetized by the magnet 190, and the ferromagnetic material may be iron (Fe), nickel (Ni), cobalt (Co), or an alloy thereof. Can be.

Referring to FIG. 4, the upper portion 152 of the pulling plate 150 is seated on the upper surface of the stepped portion 143 of the base member 140, and the extension 154 is lower side surface of the stepped portion 143. It can be inserted into and combined.

At least one boss 141 may be provided along the edge of the stepped part 143 to fix the fixing hole 151 provided in the pulling plate 150 to be coupled to the pulling plate 150.

That is, the bosses 141 may be arranged roundly at predetermined intervals in the circumferential direction along the position where the pooling plate 150 is mounted on the base member 140, and 6 are illustrated in FIG. 4. Only one example, there is no limit to the number arranged. The boss 141 may be arranged to draw a circumferential shape so as to correspond to the fixing hole 151 provided in the pulling plate 150.

In addition, the boss 141 may be pressed into the fixing hole 151 and then protrude upward of the fixing hole 151, and the protruding portion is pressurized to have a diameter larger than that of the fixing hole 151. The portion 141a may be formed.

In this case, the head portion 141a is firmly caught on the upper surface of the pulling plate 150, and the upper end of the fixing hole 151 does not protrude outward from the fixing hole 151 so that the head portion 141a does not protrude outward. It may be provided with a large diameter is provided with a seating groove (151a) on which the head portion (141a) is seated.

FIG. 5 is a schematic enlarged cross-sectional view illustrating that a head part is formed by a pressing process after coupling of a base assembly for a motor according to first and second embodiments of the present invention.

Referring to FIG. 5, at least one boss 141 is provided along an edge of the stepped part 143 to fix the fixing hole 151 provided in the pulling plate 150 to press the pooling plate 150. Can be combined.

The boss 141 may be pressed into the fixing hole 151 and may protrude upward from the fixing hole 151, and the protruding portion may be pressed to have a diameter larger than that of the fixing hole 151. 141a). The head portion 141a may be formed by a force that simultaneously rotates the protruding portion of the boss 141 by pressing a spinning tool.

The head portion 141a thus formed may be firmly caught on an upper surface of the pulling plate 150. Furthermore, the diameter of the head portion 141a is larger than that of the fixing hole 151 so that the head portion 141a does not protrude to the upper surface of the pulling plate 150. It may be provided with a mounting groove (151a).

6 is a schematic cross-sectional view showing a motor according to a second embodiment of the present invention.

Referring to FIG. 6, the motor 200 according to the second embodiment of the present invention includes a sleeve 120, a hub 130, and a boss 241 supporting the shaft 110, similarly to the first embodiment. It may include a pulling plate 150 having a base member 140 and a fixing hole 151.

However, the difference is that the boss 241 is not press-fitted into the fixing hole 151 in the second embodiment, the boss 241 and the fixing hole 151 has a tolerance so that the boss 241 is The fixing hole 151 may be fitted in a tolerance fitting manner.

Hereinafter, the same reference numerals will be used for the same components as those of the first embodiment, and different reference numerals will be used only for the different configurations. In addition, the description of the same configuration will be described only in the configuration replaced with the difference described in the first embodiment.

In the motor 200 according to the second embodiment, the base member 140 may include a disk arrangement 146, a motor seat 148, and a head seat 149 as shown in FIG. 2. have.

Here, the motor seating portion 148 may include a stepped portion 143 which is stepped on one surface corresponding to the magnet 190 coupled to one surface of the hub 130 of the motor 100. At least one boss 241 is provided along the edge of the stepped part 143, and a fixing hole 151 provided in the pulling plate 150 is inserted, and then an upper end thereof is pressed to fix the pulling plate 150. Can be.

That is, the boss 241 may be arranged roundly at predetermined intervals in the circumferential direction along the position where the pulling plate 150 is mounted in the base member 140, and the number of bosses 241 is not limited. The boss 241 may be arranged to draw a circumferential shape so as to correspond to the fixing hole 151 provided in the pulling plate 150.

In addition, since the boss 241 may be inserted into the fixing hole 151, the diameter of the boss 241 may be smaller than the diameter of the fixing hole 151. That is, the boss 241 may be fitted to the fixing hole 151 by a tolerance fitting method.

In addition, the boss 241 may be inserted into the fixing hole 151 and then protrude upward of the fixing hole 151, and the protruding portion is pressurized to have a diameter larger than that of the fixing hole 151. The portion 241a can be formed.

In this case, the head portion 241a is firmly caught on the upper surface of the pulling plate 150, and the upper end of the fixing hole 151 does not protrude outward from the fixing hole 151 so that the head portion 241a does not protrude outward. It may be provided with a large diameter is provided with a seating groove (151a) in which the head portion (241a) is seated.

In the motor 200 according to the second embodiment, the pulling plate 150 may include an upper portion 152 and an extension 154 as shown in FIG. 3.

At least one fixing hole 151 may be provided in the upper portion 152 of the pulling plate 150 at a predetermined interval in the circumferential direction, and the boss provided in the base member 140 may be provided in the fixing hole 151. 241 is fitted. Thus, the fixing hole 151 may be disposed to correspond to the arrangement shape of the boss 241, the diameter may be larger than the boss 241.

In addition, a seating groove 151a may be formed at an upper end of the fixing hole 151 to have a diameter slightly larger than that of the fixing hole 151, and the mounting groove 151a may be disposed above the fixing hole 151. The boss 241 protrudes to be fixed to the pulling plate 140 to form a head portion 241a having a diameter larger than that of the fixing hole 151 to be seated in the seating groove 151a. .

Since the boss 241 may be fitted into the fixing hole 151, the diameter of the boss 241 may be smaller than the diameter of the fixing hole 151.

In the motor 200 according to the second embodiment, as shown in FIG. 4, the upper portion 152 of the pulling plate 150 is seated on the upper surface of the stepped portion 143 of the base member 140 and extends. The part 154 may be inserted into and coupled to the lower side of the stepped part 143.

At least one boss 241 may be provided along the edge of the stepped part 143, and a fixing hole 151 provided in the pulling plate 150 may be inserted to couple the pulling plate 150.

That is, the bosses 241 may be arranged roundly at predetermined intervals in the circumferential direction along the position where the pooling plate 150 is mounted in the base member 140, but it is illustrated that 6 are arranged in FIG. 4. Only one example, there is no limit to the number arranged. The boss 141 may be arranged to draw a circumferential shape so as to correspond to the fixing hole 151 provided in the pulling plate 150.

In addition, the head portion may be formed by a pressing process after the base assembly for the motor according to the second embodiment is coupled.

Referring to FIG. 5, at least one boss 241 is provided along an edge of the stepped part 143, and a fixing hole 151 provided in the pulling plate 150 is inserted into the pulling plate 150. Can be combined.

The boss 241 may be pressed into the fixing hole 151 and then protrude upward from the fixing hole 151, and the protruding portion may be pressurized to have a diameter larger than that of the fixing hole 151. 241a) may be formed. Here, the head portion 241a may be formed by a force that simultaneously rotates the protruding portion of the boss 241 by pressing a spinning tool.

The head portion 241a thus formed may be firmly caught on an upper surface of the pulling plate 150. Further, the head portion 241a is larger in diameter than the fixing hole 151 at the upper end of the fixing hole 151 so that the head portion 241a does not protrude to the upper surface of the pulling plate 150, and thus the head portion 241a is seated. It may be provided with a mounting groove (151a).

7 is a schematic cross-sectional view showing a motor according to a third embodiment of the present invention, FIG. 8 is a schematic perspective view showing a base member provided in the motors according to the third and fourth embodiments of the present invention, and FIG. It is a schematic perspective view which shows the coupling relationship of the base member and the pulling plate provided in the motor which concerns on 3rd and 4th embodiment of this invention.

Referring to FIG. 7, the motor 300 according to the third embodiment of the present invention includes a base member 140 having a sleeve 120, a hub 130, and a fixing groove 145 supporting the shaft 110. And a pulling plate 150 having a fixing hole 151, wherein the base member 140 and the pulling plate 150 simultaneously pass through the fixing hole 151 and the fixing groove 145. It can be coupled by a fixed piece 341 to be press-fitted. That is, in the third embodiment, the pulling plate 150 is fixed to the base member 140 by a fixing piece 341 which is a separate member.

In the motor 300 according to the third embodiment, the base member 140 may include a disk arrangement 146, a motor seat 148, and a head seat 149 as shown in FIG. 8. have.

Here, the motor seating portion 148 may include a stepped portion 143 which is stepped on one surface corresponding to the magnet 190 coupled to one surface of the hub 130 of the motor 100. At least one fixing groove 145 is provided along the edge of the stepped portion 143 to simultaneously pull through the fixing hole 151 provided in the pulling plate 150 by the fixing piece 341. 150 may be fixed to the base member 140.

That is, the fixing groove 145 may be arranged roundly at predetermined intervals in the circumferential direction along the position where the pulling plate 150 is mounted in the base member 140, and the number of the fixing grooves 145 is not limited. The fixing groove 145 may be arranged to draw a circumferential shape so as to correspond to the fixing hole 151 provided in the pulling plate 150.

In addition, since the fixing piece 341 may be press-fitted through the fixing hole 151 and the fixing groove 145 at the same time, the diameter of the fixing hole 151 and the fixing groove 145 is the fixing piece ( 341) may be provided smaller than the diameter.

In addition, the fixing piece 341 may be provided with a head portion 341a that is pressed into the fixing hole 151 and the fixing groove 145 to a predetermined depth and is applied to the upper surface of the pulling plate 150.

In this case, the head portion 341a is firmly caught on the upper surface of the pulling plate 150, and the upper portion of the fixing hole 151 is disposed on the upper end of the fixing hole 151 so that the head portion 341a does not protrude outward. It may be provided with a large diameter is provided with a seating groove (151a) in which the head portion 341a is seated.

In the motor 300 according to the third embodiment, the pulling plate 150 may include an upper portion 152 and an extension 154, as shown in FIG. 3.

At least one fixing hole 151 may be provided in the upper portion 152 of the pulling plate 150 at a predetermined interval in the circumferential direction, and the fixing hole 151 may be fixed to the base member 140. The fixing piece 341 may be press-fitted together with the groove 145. In addition, the fixing hole 151 may be disposed to correspond to the arrangement shape of the fixing groove 145, and the diameter of the fixing piece 341. It may be provided smaller than).

In addition, a seating groove 151a may be formed at an upper end of the fixing hole 151 so as to have a step diameter slightly larger than that of the fixing hole 151, and the seating groove 151a may be formed of the fixing hole 151. The head portion 341a of the fixing piece 341 protruding upward may be seated.

In the motor 300 according to the third embodiment, as shown in FIG. 9, the upper portion 152 of the pulling plate 150 is seated on the upper surface of the stepped portion 143 of the base member 140 and extends. The part 154 may be inserted into and coupled to the lower side of the stepped part 143.

At least one fixing groove 145 is provided along the edge of the stepped portion 143 to be pulled by the fixing piece 341 which is simultaneously pressed through the fixing hole 151 provided in the pulling plate 150. Plate 150 may be coupled to the base member 140.

That is, the fixing grooves 145 may be arranged roundly at predetermined intervals in the circumferential direction along the position where the pulling plate 150 is mounted in the base member 140, but six are shown in FIG. 9. This is just an example and there is no limit to the number of arrangement. The fixing groove 145 may be arranged to draw a circumferential shape so as to correspond to the fixing hole 151 provided in the pulling plate 150.

In addition, the fixing piece 341 is press-fitted into the fixing hole 151 and the fixing groove 145, the head portion 341a having a diameter larger than the fixing hole 151 at the upper end of the fixing piece 341 Can be formed.

In this case, the head portion 341a is firmly caught on the upper surface of the pulling plate 150, and the upper portion of the fixing hole 151 is disposed on the upper end of the fixing hole 151 so that the head portion 341a does not protrude outward. It may be provided with a stepped groove (151a) is provided with a large stepped diameter is seated on the head (341a).

10 is a schematic cross-sectional view showing a motor according to a fourth embodiment of the present invention.

Referring to FIG. 10, the motor 400 according to the fourth embodiment of the present invention includes a base member 140 having a sleeve 120 for supporting the shaft 110, a hub 130, and a fixing groove 145. And a pulling plate 150 having a fixing hole 151, wherein the base member 140 and the pulling plate 150 simultaneously pass through the fixing hole 151 and the fixing groove 145. It can be coupled by a fixing piece 441 that is screwed together. In this case, a male thread 441b may be provided on an outer circumferential surface of the fixing piece 441, and a female thread 145a may be provided on an inner circumferential surface of the fixing groove 145.

That is, in the fourth embodiment, the fixing piece 441, which is a separate member, fixes the pulling plate 150 to the base member 140 by screwing instead of press fitting.

Hereinafter, the same reference numerals will be used for the same components as those of the third embodiment, and different reference numerals will be used only for the different configurations. In addition, the description of the same configuration will be described with respect to the configuration is replaced with the difference described in the third embodiment.

In the motor 400 according to the fourth embodiment, the base member 140 may include a disk arrangement 146, a motor seat 148 and a head seat 149 as shown in FIG. 8. have.

Here, the motor seating portion 148 may include a stepped portion 143 which is stepped on one surface corresponding to the magnet 190 coupled to one surface of the hub 130 of the motor 100. At least one fixing groove 145 is provided along the edge of the stepped portion 143 to be pulled by the fixing piece 341 which is simultaneously screwed through the fixing hole 151 provided in the pulling plate 150. Plate 150 may be fixed to the base member 140.

In addition, since the fixing piece 441 may be screwed while simultaneously passing through the fixing hole 151 and the fixing groove 145, an internal thread 145a is provided on the inner circumferential surface of the fixing groove 145. A male thread 441b corresponding to the female thread 145a provided on the inner circumferential surface of the fixing groove 145 may be provided on the outer circumferential surface of the fixing piece 441 to be screwed together.

In addition, the fixing piece 441 may be provided with a head portion 441a that is screwed to the fixing hole 151 and the fixing groove 145 to a predetermined depth and is caught on the upper surface of the pulling plate 150. .

In this case, the head portion 441a is firmly caught on the upper surface of the pulling plate 150, and the upper portion of the fixing hole 151 is disposed on the upper end of the fixing hole 151 so that the head portion 441a does not protrude outward. It may be provided with a stepped groove (151a) in which the diameter is provided to be stepped on the head 441a is mounted.

In the motor 400 according to the fourth embodiment, the pulling plate 150 may include an upper portion 152 and an extension 154 as shown in FIG. 3.

At least one fixing hole 151 may be provided in the upper portion 152 of the pulling plate 150 at a predetermined interval in the circumferential direction, and the fixing hole 151 may be fixed to the base member 140. The fixing piece 441 may be screwed together with the groove 145. Thus, the fixing hole 151 may be disposed to correspond to the arrangement shape of the fixing groove 145, the male thread 441b is provided on the outer peripheral surface of the fixing piece 441, the fixing groove 145 An inner circumferential surface of the female thread mountain 145a corresponding to the male thread 441b may be provided.

In addition, a seating groove 151a may be formed at an upper end of the fixing hole 151 so as to have a step diameter slightly larger than that of the fixing hole 151, and the seating groove 151a may be formed of the fixing hole 151. The head portion 441a of the fixing piece 441 that is locked upward may be seated.

In the motor 400 according to the fourth embodiment, as shown in FIG. 9, the upper portion 152 of the pulling plate 150 is seated on the upper surface of the stepped portion 143 of the base member 140 and extends. The part 154 may be inserted into and coupled to the lower side of the stepped part 143.

At least one fixing groove 145 is provided along the edge of the stepped portion 143 to be simultaneously screwed through the fixing holes 151 provided in the pulling plate 150 by the fixing piece 441. Pulling plate 150 may be coupled to the base member 140.

In addition, the fixing piece 441 is screwed into the fixing groove 145 through the fixing hole 151 and the fixing groove 145, the diameter of the fixing hole (441) on the upper end of the fixing hole ( A head portion 441a larger than 151 can be formed.

Through the above embodiment, the motor (100, 200, 300, 400) according to the present invention is a pulled plate to prevent over-injury of the rotating member of the motor (100, 200, 300, 400) to the base member 140 The pooling plate 150 is attached to the base member 140 by providing bosses 141 and 241 and fixing holes 151 and 251 or fixing grooves 145 and fixing pieces 341 as a means for allowing the 150 to be coupled. ) Can be tightly coupled to maximize the extraction force.

100, 200, 300, 400: motor
110: shaft
120: sleeve
130: hub
140: base member
150: pulling plate
160: core
170: Coil

Claims

A base member to which the shaft system of the motor is mounted;
At least one boss protruding from the base member to fix the pulling plate; And
And a pulling plate coupled to the base member to prevent over-injuries of the rotating member of the motor and having at least one fixing hole into which the boss is press-fitted.

The method of claim 1,
The boss base assembly for the motor is arranged to draw a circumferential shape corresponding to the fixing hole provided in the pulling plate.

The method of claim 1,
The pulling plate is a base assembly for a motor continuously formed in the circumferential direction so as to correspond to the magnet for generating a rotational driving force of the motor.

The method of claim 1,
The fixing hole is a motor base assembly provided in a shape corresponding to the boss.

The method of claim 1,
And a diameter of the fixing hole is smaller than that of the boss so that the boss is press-fitted and fixed.

The method of claim 1,
The boss is a base assembly for the motor is projected to the upper side of the fixing hole after being fixed to the fixing hole.

The method according to claim 6,
The boss projecting to the upper side of the fixing hole is a base assembly for a motor that is pressed to fix the pulling plate is formed on the upper surface of the pulling plate to form a head portion larger than the fixing hole.

The method of claim 7, wherein
The base assembly for the motor having a mounting groove in which the head portion is seated at the upper end of the fixing hole in the pulling plate.

A base member to which the shaft system of the motor is mounted;
At least one boss protruding from the base member to fix the pulling plate;
A pulling plate coupled to the base member to prevent over-injury of the rotating member of the motor and having at least one fixing hole into which the boss is fitted; And
After the boss is inserted into the fixing hole and protrudes to the upper side of the fixing hole is pressed to fix the pooling plate is formed so that the diameter is larger than the fixing hole head portion is caught on the upper surface of the pooling plate; includes Base assembly for the motor.

10. The method of claim 9,
The base assembly for the motor having a mounting groove in which the head portion is seated at the upper end of the fixing hole in the pulling plate.

A base member to which the shaft system of the motor is mounted;
A pulling plate coupled to the base member to prevent over-injury of the rotating member of the motor; And
And a fixing piece which is inserted into and fixed in a fixing hole provided in the pulling plate and the base member and provided in a position corresponding to the fixing hole.

The method of claim 11,
The fixing piece is a base assembly for a motor having a head which is formed to have a diameter larger than the fixing hole to be caught on the upper surface of the pulling plate.

The method of claim 11,
The fixing piece is a motor base assembly that is pressed into the fixing hole and the fixing groove.

The method of claim 13,
The diameter of the fixing piece is a base assembly for a motor smaller than the diameter in the fixing hole and the fixing groove.

The method of claim 12,
The fixing piece is provided with a male thread on the outer peripheral surface, the fixing groove is provided with a female thread on the inner peripheral surface of the motor base assembly for screwing the fixing piece and the fixing groove.

The method of claim 12,
The base assembly for the motor having a mounting groove in which the head portion is seated at the upper end of the fixing hole in the pulling plate.

A motor base assembly according to any one of claims 1 to 16;
A core coupled to the base member, the core being wound to generate a rotational driving force; And
And a hub coupled to the shaft system and having a magnet facing the coil.