WO2015030478A1

WO2015030478A1 - Flat type motor rotator and flat type motor including same

Info

Publication number: WO2015030478A1
Application number: PCT/KR2014/007957
Authority: WO
Inventors: 김태상
Original assignee: Kim Tae Sang
Priority date: 2013-09-02
Filing date: 2014-08-27
Publication date: 2015-03-05

Abstract

The present invention relates to a flat type motor and, more specifically, to: a rotator having a new structure, which can be applied to a flat type vibration motor, and the like, designed to be provided to a personal portable terminal, a tablet PC, a game console, or a remote controller and the like so as to vibrate; and a flat type motor including the same.

Description

Rotor for flat motor and flat motor including same

The present invention relates to a flat motor, and more particularly to a rotor and a flat motor comprising a new structure that can be applied to a flat vibration motor designed to vibrate mounted on a personal portable terminal or tablet PC, game machine or remote control, etc. will be.

In general, one of the essential functions of a communication device is an incoming call function. This incoming call function has a function of notifying sound or vibration. The double vibration function is mainly used when the melody or bell is transmitted to the outside through the speaker to avoid harm to others. For this vibration, a small vibrator is driven to transmit the driving force to the case of the device. It is common to allow the device to vibrate.

Such vibration motors have a cylindrical shape and a flat shape according to the shape thereof. Among them, the flat vibration motors can be made thinner, which is advantageous for miniaturization of the product, and is widely used because the price is cheaper than the linear vibration motors.

FIG. 1A is a front sectional view showing a structure of a generally known flat vibration motor, wherein the flat vibration motor has a bracket 1 at a bottom thereof, and a lower end of the shaft 1a is firmly fitted at the center of the bracket 1. The upper surface of the bracket 1 is attached to a central portion and a flexible substrate 1b having a fine thickness extending from the central portion to one side of the bracket 1. In addition, the outer periphery of the central flexible substrate 1b is provided with a multi-pole magnet 2 in which the N and S poles are alternately magnetized on the peripheral edge thereof, and a flexible substrate ( A pair of brushes 3 having a lower end attached to 1b) are provided at a predetermined angle. The bearing 1c is coupled to the shaft 1a in the upper part, and the rotor is eccentrically supported by the outer peripheral surface of the bearing 1c.

As shown in FIG. 1B, the rotor has a predetermined electric angle on the top surface of the hard substrate 4 in which the circular flat plate is cut at a predetermined angle so that the plurality of winding coils 5 are joined. The circumference | surroundings of the coil 5 are the structures made to fill with the molded object 6. In addition, the bottom surface of the hard substrate 4 is formed so that the commutator 7 composed of a plurality of segments is formed at the same time as the inner end supported by the bearing 1c at the time of forming a printed circuit. On the other hand, the upper case (8) is coupled to the upper end of the shaft (1a) in the form of a cap that is opened downward to block the components provided to the upper portion of the bracket (1) from external interference.

The flat vibration motor having such a configuration allows the power coil input from the outside to be energized to the winding coil 5 through the flexible substrate 1b, the brush 3, the commutator 7, and the hard substrate 4. ) And the rotor is rotated by the generation of electromagnetic force due to the interaction between the magnet and the magnet (2), in which the rotor is eccentrically supported by the shaft (1a) is driven eccentrically, such an eccentric driving force through the shaft (1a) bracket ( As it is transmitted to 1), the device vibrates.

In order to maximize the amount of eccentricity of the flat vibration motor, Korean Patent No. 10-0321870 is formed by fixing the winding coils and the weight on the other surface of the hard substrate integrally formed by insert injection of a low specific gravity resin material, Disclosed is a flat vibration motor having a plurality of winding coils and a rotor configured such that a portion filled with the resin material on the side of the weight body therebetween is substantially aligned with an outer circumferential portion of a hard substrate. 0027495 is a rotor formed so as to maximize the amount of eccentricity of the rotor by the outer periphery of the outer side of the insulator formed integrally of the coil, the weight and the circuit board is formed differently depending on the outer periphery and position of the circuit board It has been disclosed a flat vibration motor having a.

As described above, the conventional flat vibration motor uses a method of fixing weights, coils, bearings, and circuit boards by using an insulator after assembly for assembly of a rotor that generates vibration by rotation. In this case, the high pressure and high temperature of the injection process may cause defects such as damage to components such as coils, oil of the bearing may be damaged, and the manufacturing process is difficult by injecting the products one by one. There was a problem in that the insulator is made of resin to be easily broken.

Therefore, there is a need for development of a rotor having a new structure and a flat motor including the same.

The present inventors have completed the present invention by developing a rotor having a new fixed structure that is not fixed with an insulator by using injection.

Therefore, the object of the present invention is not a method of fixing each component of the rotor with an insulator by using the injection that has been used until now, but firmly fixing each component of the rotor using an adhesive through a support member of a new structure. It is to provide a rotor and a flat motor comprising the same.

It is another object of the present invention to provide a rotor and a flat motor including the same, in which the production process is simplified by using an adhesive rather than an injection process, as well as the automation of the production process is easy to manufacture and the cost can be reduced. It is.

It is another object of the present invention to reduce the damage of parts such as coils due to the high pressure of the injection by using the adhesive, not the injection process, there is no oil burnout of the bearing due to the high temperature of the injection process as well as due to contamination of the commutator surface It is to provide a rotor and a flat motor including the same in which a defect does not occur.

The object of the present invention is not limited to the above-mentioned object, and even if not explicitly stated, the object of the invention that can be recognized by those skilled in the art can be naturally included from the description of the detailed description below. .

In order to achieve the above object of the present invention, firstly, the present invention includes a circuit board including a commutator and a through hole formed therein; A bearing disposed on the circuit board to protrude to a predetermined height from an upper surface of the circuit board; A support member including a bearing fixing portion for receiving and fixing the protruding bearing therein and a bearing fixing support plate extending vertically from a lower end of the bearing fixing portion and coupled to an upper surface of the circuit board; And a coil coupled to an upper surface of the circuit board or an upper surface of the support member.

In a preferred embodiment, further comprises a weight body coupled to the upper surface of the support member.

In a preferred embodiment, the bearing fixing portion is formed to protrude vertically from the upper surface of the bearing fixing support plate, the cylindrical side wall portion in which the bearing is accommodated and fixed therein, and the hole through which the support shaft passes. And a top portion formed integrally extending from an upper end of the cylindrical side wall portion so as to surround the upper surface of the bearing, or a caulking portion formed perpendicularly to the side wall portion to surround the upper surface of the bearing.

In a preferred embodiment, the bearing fixing plate included in the support member has a narrow band shape from one end located at the rear end of the bearing fixing part to the portion where the bearing fixing part is located, and the other end positioned at the front end of the bearing fixing part. Until to form a narrow band shape to a certain length from the position where the bearing fixing part is located to form a fan-shaped shape that gradually widens to the other end of the bearing fixing plate.

In a preferred embodiment, the bearing fixing support plate included in the support member is formed to have a shape that is coupled to all upper surfaces of the circuit board.

In a preferred embodiment, the bearing fixing support plate further comprises a coil welding groove formed through one surface and the other surface.

In a preferred embodiment, the support member further comprises a rib formed integrally with the bearing fixing support plate to reinforce its strength.

In a preferred embodiment, when the support member is formed of a ferromagnetic material, the support member further includes a eddy current blocking groove formed in a part of the bearing fixing support plate.

In a preferred embodiment, the support member further includes a weight fixing protrusion formed on a portion of the outer circumference perpendicular to the bearing fixing support plate.

In a preferred embodiment, the support member and coil coupled to the circuit board or the weight and coil coupled to the support member are bonded by an adhesive.

The present invention also provides a flat motor comprising the above-described rotor.

In addition, the present invention forms a space therein and the lower case is open; A lower substrate coupled to a lower portion of the case to close the opened lower portion; A support shaft fixed in the vertical direction so as not to rotate on the lower substrate or the case; A bearing rotatably fixed about the support shaft; A support member including a bearing fixing part for receiving and fixing the bearing therein and a bearing fixing support plate extending vertically from an upper end of the bearing fixing part to be parallel to the circuit board; An upper surface coupled to a lower surface of the support member and a lower surface coupled to a circuit board; And a circuit board including a commutator and a through-hole through which the bearing fixing portion penetrates. A magnet disposed to face the coil; A pair of brushes formed to contact the commutator; It provides a flat motor comprising a; and a power supply for supplying power to the brush.

In a preferred embodiment, the bearing fixing portion is formed to protrude vertically from the lower surface of the bearing fixing support plate and the cylindrical side wall portion in which the bearing is accommodated and fixed therein by interference fit, and the support shaft passes through A lower portion formed integrally extending from a lower end of the cylindrical side wall portion to form a hole and surrounding the lower surface of the bearing, or a caulking portion formed perpendicularly to the side wall portion to surround the lower surface of the bearing. .

In a preferred embodiment, the upper surface further comprises a weight body coupled to the lower surface of the support member and the lower surface is coupled to the circuit board.

In a preferred embodiment, the support member further includes a weight fixing protrusion formed on a portion of the outer circumference perpendicular to the bearing fixing support plate. Ha

In a preferred embodiment, the coil and the weight body coupled with the circuit board or the support member are bonded with an adhesive.

In a preferred embodiment, it further comprises a washer installed between the support shaft upper portion and the case.

The present invention has the following excellent effects.

First, according to the rotor of the present invention and a flat motor including the same, each component of the rotor through a support member of a new structure is not a method of fixing each component of the rotor with an insulator by using injection that has been used until now. It has a configuration that can be fixed firmly using an adhesive.

In addition, according to the rotor of the present invention and the flat motor including the same, the production process may be simplified by using an adhesive instead of the injection process, and the production process may be automated, thereby facilitating manufacturing and reducing costs.

In addition, according to the rotor of the present invention and the flat motor including the same, there is little damage to components such as coils due to the high pressure of the injection by using an adhesive rather than an injection process, and there is no oil burnout of the bearing due to the high temperature of the injection process. In addition, no defects are caused by contamination of the commutator surface.

These technical effects of the present invention are not limited to the above-mentioned range, and even if not explicitly stated, the effects of the invention that can be recognized by those skilled in the art from the description of the specific contents for the implementation of the following invention are also mentioned. Of course included.

Figure 1a is a front sectional view of a conventional flat vibration motor, Figure 1b is a perspective view showing the configuration of the rotor included in Figure 1a.

2A and 2B are exploded perspective views of a rotor according to embodiments of the present invention.

3A and 3B are exploded perspective views of a rotor according to other embodiments of the present invention.

4A and 4B are views illustrating coupling of a support member and a bearing in a rotor according to embodiments of the present invention.

5A and 5B are diagrams illustrating another embodiment of the supporting member included in the rotor according to the embodiments of the present invention.

(A) of FIG. 6 illustrates a eddy current which may be generated when using the support member shown in FIG. 5B, and (b) illustrates a groove part for blocking the eddy current.

FIG. 7A is an exploded perspective view of the flat motor including the rotor shown in FIG. 2B, FIG. 7B is a sectional view, and FIG. 7C is a plan view.

FIG. 8A is an exploded perspective view of the flat motor including the rotor shown in FIG. 3B, and FIG. 8B is a sectional view.

Figure 9a is an exploded perspective view of a flat motor including a rotor according to another embodiment of the present invention, Figure 9b is a sectional view.

The terms used in the present invention have been selected as widely used general terms as possible in consideration of the functions in the present invention, but this may vary according to the intention or precedent of the person skilled in the art, the emergence of new technologies and the like. In addition, in certain cases, there is also a term arbitrarily selected by the applicant, in which case the meaning will be described in detail in the description of the invention. Therefore, the terms used in the present invention should not be interpreted based on the general meaning of the term but the contents described throughout the specification of the present invention, rather than simply the name of the term.

Hereinafter, with reference to the accompanying drawings and preferred embodiments will be described in detail the technical configuration of the present invention.

However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Like reference numerals used to describe the present invention throughout the specification denote like elements.

Technical features of the present invention are a rotor and a flat motor including the same, which can firmly fix each component of the rotor using an adhesive through a support member of a new structure.

In other words, flat motors known to date have used a method of fixing each component of the rotor with an insulator by injection, and thus, when fixing each component of the rotor through the injection process, This is because various problems such as breakage of components such as coils, oil burnout of bearings due to high temperature of the injection process, and defects caused by contamination of the commutator surface are not only generated, but also because the production process is complicated and automation is not possible.

Accordingly, the flat motor rotor of the present invention includes a circuit board including a commutator and a through hole formed therein; A bearing disposed on the circuit board to protrude to a predetermined height from an upper surface of the circuit board; A support member including a bearing fixing portion for receiving and fixing the protruding bearing therein and a bearing fixing support plate extending vertically from a lower end of the bearing fixing portion and coupled to an upper surface of the circuit board; And a coil coupled to an upper surface of the circuit board or an upper surface of the support member. If necessary, the rotor for the flat motor of the present invention may further include a weight body coupled to the upper surface of the support member to improve the eccentric force.

The rotor for the flat motor of the present invention will be described in detail with reference to FIGS. 2A to 6.

Figures 2a to 3b is an exploded perspective view of the rotor according to embodiments of the present invention, Figures 4a and 4b is a view illustrating the coupling of the support member and the bearing in the rotor according to the embodiments of the present invention, Figure 5a and 5b are views showing another embodiment of the support member included in the rotor according to the embodiments of the present invention, respectively, Figure 6 (a) occurs when using the support member shown in Figure 5b It shows a eddy current which can be, (b) is a view showing a groove portion for blocking the eddy current.

As shown in FIGS. 2A and 3A, the rotor 100 of the present invention includes a circuit board 110, a bearing 120, a support member 130, and a coil 140. If necessary, the weight body 150 may be further included as shown in FIGS. 2B and 3B.

The circuit board 110 is provided with a coil terminal for connecting to the coil 140 on one side, and the other side is supplied from the outside through the power supply 260 including a commutator in contact with the brush 250 A function of applying power to the coil 140 may be a PCB substrate as an embodiment. As shown, the circuit board 110 may have a through hole through which one or more of the support shaft 230, the bearing 120, and the bearing fixing portion may pass.

The bearing 120 is a component coupled to the center of rotation of the circuit board 110 and may be disposed in the circuit board so as to protrude at a predetermined height from the upper surface of the circuit board. In particular, the bearing 120 may be inserted into or inserted into a through hole formed in the circuit board. It may be positioned to cover the hole. The support shaft 230 may be disposed at the center of the bearing 120.

The support member 130 is a component that fixes the bearing 120 to the circuit board 110, and is composed of a bearing fixing part 131 and a bearing fixing support plate 132, the bearing fixing part 131 is a circuit board ( It is a component for receiving and fixing the bearing 120 disposed on the inside therein, the bearing fixing support plate 132 is a component that is coupled to the upper surface of the circuit board 110 by interviewing the circuit board 110 The bearing fixing part 131 and the bearing fixing plate 132 may be vertically connected to each other. Therefore, the bearing fixing part 131 and the bearing fixing plate 132 constituting the support member 130 are formed in the bearing fixing plate (132) which extends vertically integrally from the lower end of the bearing fixing part 131 as shown. It may be made integrally as shown in 132, but may have a structure consisting of separate components coupled to each other.

Although not shown, the bearing fixing portion 131 may be formed of only the cylindrical side wall portion 131a, and as illustrated in FIG. 4, the cylindrical side wall portion 131a and the upper surface portion 131b, or the cylindrical side wall portion ( It may be configured to include a 131a and a caulking unit (131c).

That is, the cylindrical side wall portion 131a is a component that is formed to protrude vertically from the upper surface of the bearing fixing support plate 132 and the bearing 120 is accommodated and fixed therein by interference fit. A bearing 120 which is formed integrally or separately from the cylindrical side wall portion 131a and inserted into the cylindrical side wall portion 131a, such as 131b or the caulking portion 131c, is dropped along the support shaft 230. This is because it may further include a component that can play a role of preventing movement in the upper side opening direction of the cylindrical side wall portion 131a by the force applied.

The upper surface portion 131b is formed of a hole through which the support shaft 230 passes, and forms an inner space into which an upper space of the bearing 120 is inserted, that is, the support shaft 230 disposed at the center of the bearing 120 is inserted. The diameter of the bearing 120 is formed through the same through-holes as the diameter of the support shaft 230 as a component formed integrally vertically extending from the upper end of the cylindrical side wall portion 131a to surround the upper surface It may be the same circular plate. The caulking portion 131c is a component that is formed perpendicular to the cylindrical side wall portion 131a to surround the upper surface of the bearing, and is not integrally formed with the cylindrical side wall portion 131a, and has a cylindrical side wall portion 131a. Any known configuration can be used as long as it is formed on the upper surface of the side wall of the bearing 120 inserted therein so as to prevent the bearing 120 from moving in the upper opening direction of the cylindrical side wall portion 131a.

Bearing fixing plate 132 is a first type that is coupled by interviewing only a portion of the upper surface of the circuit board 110 as shown in Figure 2a and 2b as an example, and as shown in Figure 3a and 3b as an example Likewise, it may be classified as a second type that is coupled to an interview with most of the upper surface of the circuit board 110. The first type is a bearing fixing support plate 132 of the upper part of the upper surface of the circuit board 110, in particular, the center surface where the through-hole is located in the state in which the bearing 120 is fixed to the circuit board 110 by the support member 130. ) And cost can be reduced. In addition, since the circuit board 110 and the coil 140 are interviewed and coupled to each other compared to the second type, the thickness of the coil may be increased to improve the flat motor performance. On the other hand, the second type is coupled to most of the upper surface of the circuit board 110 in a state in which the bearing 120 is coupled to the circuit board 110 by the support member 130 to fix the bearing 120 more firmly. There are advantages to it.

As can be seen from FIGS. 2A and 2B and 5A, which show an embodiment of the bearing fixing plate 132 of the first type, a bearing located at the rear end of the bearing fixing part 131 around the bearing fixing part 131. One end of the fixed part support plate 132, that is, the portion where the bearing fixing part 131 is located in the front end part 132b, has a narrow band shape, and the bearing fixing part supporting plate 132 located at the front end of the bearing fixing part 131. The other end, ie, the rear end 132a, forms a narrow band shape from a portion where the bearing fixing part 131 is located to a predetermined length, and then gradually expands the width to the other end of the bearing fixing plate 132, that is, the rear end 132a. A shape forming a fan shape may be proposed. If the shape has such a shape, the fan-shaped portion is widely interviewed with the circuit board 110 to improve the fixing force of the bearing 120 while at the same time the portion where the coil is placed is exposed, and not only the thickness of the coil can be thickened, but also the fan-shaped portion. By coupling the weight body 150 to the upper surface of the bearing 120 can be more firmly coupled to the circuit board 110. In addition, although not shown, the support member 130 and the weight 150 may be firmly coupled to each other by a weight fixing protrusion formed by bending the bearing fixing support plate 132 in a vertical direction on an outer circumference of the fan-shaped portion. In addition, the separation force applied to the weight body 150 by the centrifugal force during the rotation of the rotor 100 can be weakened.

The bearing fixing support plate 132 of the second type has a circuit board having a shape that is coupled to almost the upper surface of the circuit board 110, as shown in FIGS. 3A, 3B, and 5B, in which an embodiment is shown. It may be formed in substantially the same shape as 110).

In this case, as shown in Figure 5b may further include a coil welding groove 132c formed through one surface and the other surface of the bearing fixing support plate 132. As described above, the coil welding groove 132c formed on one surface of the bearing fixing plate 132 electrically connects the coil 140 coupled to the upper surface of the bearing fixing plate 132 and the circuit board 110 coupled to the lower surface. It can provide space for connection.

In addition, the bearing fixing plate 132 may further include a rib 132d which is integrally formed with the bearing fixing plate 132 in part to reinforce its strength, as shown in one embodiment. 132d may be formed to be less than or equal to the thickness of the circuit board 110 coupled to the lower portion of the bearing fixing support plate 132.

In addition, the bearing fixing plate 132 may further include a weight fixing protrusion 132f formed perpendicularly to the bearing fixing plate 132 on a portion of the outer circumference, as described above, the weight fixing protrusion 132f. ) May not only firmly couple the support member 130 and the weight body 150, but also weaken the separation force applied to the weight body 150 by centrifugal force during rotation of the rotor 100.

The support member may be any known material, but may be a material that is metal and nonmagnetic as an embodiment. On the other hand, when the support member is formed of a ferromagnetic material, and the support member 130 includes a bearing fixing support plate 132 of the second type, a eddy current may be generated as shown in FIG. That is, when the current flows through the coil 140 and the rotation of the rotor 100 occurs, and the support member 130 is made of a ferromagnetic material such as an iron plate, the support member may be formed by the magnetic force or the magnet 240 by the coil 140. This is because a local eddy current is generated in a part of 130). In this way, when the eddy current is generated, the magnetic force is generated in a direction that prevents the rotation of the coil 140 and the support member 130. Therefore, if the eddy current blocking groove 132e is further included in a part of the bearing fixing support plate 132 of the second type as shown in FIG. 6 (b) in order to obtain smooth rotation of the rotor 100, the eddy current can be prevented. It becomes possible.

The coil 140 is a component of the rotor 100 coupled to the upper surface of the circuit board 110 or the upper surface of the support member 130, particularly facing the magnet in a state in which the rotor 100 is disposed in a flat motor. If it is arranged to see the power is applied to generate the electromagnetic force to make the rotor 100 rotates, because it is a known configuration, a detailed description thereof will be omitted.

The weight body 150 is a component included in the rotor applied to the flat vibration motor because it serves to generate the vibration force by giving an eccentricity to the rotational movement generated by the coil 140 and the magnet 240, vibration force In order to maximize the mass, it may be desirable to increase the mass by using a material having a high specific gravity such as tungsten.

The circuit board 110, the support member 130, the coil 140, and the weight body 150, which are components included in the rotor 100 described above, may be coupled to each other by an adhesive. That is, when the adhesive layer is formed to be firmly attached to a portion where the circuit board 110 and the support member 130 are interviewed, the bearing 120 may be naturally attached firmly, so that the rotor shown in FIGS. 100 may be completed by bonding the coil 140 to the circuit board 110 or the support member 130 with an adhesive, respectively, the rotor 100 shown in Figures 2b and 3b is the coil 140 described above This is because in addition to the adhesion of the) it can be completed by further bonding the weight to the support member 130 with an adhesive.

As such, the rotor 100 of the present invention does not need to perform an injection process at all, and can be manufactured by attaching each component firmly using only an adhesive.

Next, a flat motor including the flat motor rotor of the present invention will be described in detail with reference to FIGS. 7A to 9B.

FIG. 7A is an exploded perspective view of the flat motor including the rotor shown in FIG. 2B, FIG. 7B is a sectional view, and FIG. 7C is a plan view. FIG. 8A is an exploded perspective view of the flat motor including the rotor shown in FIG. 3B, and FIG. 8B is a sectional view. Figure 9a is an exploded perspective view of a flat motor including a rotor according to another embodiment of the present invention, Figure 9b is a sectional view.

As shown in FIG. 7A, the flat motor 10 according to the exemplary embodiment of the present invention includes a case 210, a lower substrate 220, a support shaft 230, a rotor 100, a magnet 240, and a brush. 250 and a power supply 260.

The case 210 forms a predetermined space therein and acts as a housing for accommodating the components of the flat motor 10 together with the lower substrate 220 in the form of a lower portion thereof.

The lower substrate 220 may be coupled to the lower portion of the case 210 to perform a function of closing the opened lower portion, and may include a bracket as an embodiment of the lower substrate 220. If necessary, the case 210 and the lower substrate 220 may be formed of one component.

The support shaft 230 is located at the center of the bearing 120 included in the rotor 100 to be rotatably coupled with the bearing 120 so that the rotor 100 is eccentrically supported about the support shaft 230. As a component to be, it may be fixed in the vertical direction so as not to rotate to the lower substrate 220 or the case 210. A shaft may be used as one embodiment of the support shaft 230.

Since the rotor 100 includes the rotor shown in FIG. 2B as described above, the detailed description will be replaced with the above description.

Magnet 240 is disposed to face the coil 140 included in the rotor 100 is a component that causes the rotor 100 to rotate by generating an electromagnetic force when power is applied.

The brush 250 is provided with a pair to be coupled with the power supply 260 and coils the power supplied from the outside through the power supply 260 in contact with the commutator of the circuit board 110 included in the rotor 100. It is a component to be applied to (140).

The power supply 260 may be formed on one side of the lower substrate 220 as shown to supply power from the outside to the coil 140 of the rotor 100. In this case, the power supply device 260 may be included in the lower substrate 120 to be integrally injected and may be configured as a metal terminal or a printed circuit board. In some cases, the power supply device 260 may not be integrally formed in the lower substrate 120 and may be separately configured to be coupled to one side of the lower substrate 120.

The washer 270 is a component for protecting the rotor 100, and if necessary, the washer 270 and the washer case 280 may be excluded.

7b and 7c, it is possible to observe the exposed part of the circuit board 110 in the flat motor 10 of the present invention, so that each component of the rotor of the present invention is not fixed through the injection process. It can be seen more clearly that no strata are formed.

As shown in FIG. 8A, the flat motor 10 according to another embodiment of the present invention may include a case 210, a lower substrate 220, a support shaft 230, a rotor 100, a magnet 240, and a brush. 250 and a power supply 260.

Compared with FIG. 7A, the difference is different only in that it includes the rotor shown in FIG. 3B, and the remaining components are the same, and thus, detailed descriptions thereof will be omitted.

That is, the flat motor 10 illustrated in FIGS. 8A and 8B may include a case 210 having a predetermined space therein, a coil 140 disposed inside the case 210, and a support member coupled to the coil 140. 130, the weight 150 coupled to one side of the support member 130, the circuit board 110 coupled to the bottom surface of the support member 130, and the bearing coupled to the rotation center of the support member 130 ( 120, the support shaft 230 disposed at the center of the bearing 120, the support shaft 230, and the lower substrate 220 and the lower substrate 220 which seal the open lower portion of the case 210. Coupling to one side of the permanent magnet 240, the lower substrate 220 is coupled to face the coil 140 on one side and coupled to the power supply 260, power supply 260 for supplying power from the outside This is because the configuration includes a brush 250 that contacts the circuit board 110 and connects the external power.

As shown in FIG. 9A, the flat motor 10 according to another embodiment of the present invention may include a case 210, a lower substrate 220, a support shaft 230, a rotor 100, a magnet 240, And a brush 250 and a power supply 260.

Compared with FIG. 8A, differences are included because the components of the rotor shown in FIG. 3B are different, but the combination order of some of the components is different.

As shown in Figure 9a and 9b, the flat motor 10 of the present invention forms a space therein, the lower case is open case 210, the lower substrate is coupled to the lower part of the case to close the open lower part The support shaft 230 fixed in the vertical direction so as not to rotate on the 220, the lower substrate 220, or the case 210, the bearing 120 rotatably fixed about the support shaft 230, and a bearing ( A support member including a bearing fixing part 131 for receiving and fixing 120 therein, and a bearing fixing support plate 132 extending perpendicularly from an upper end of the bearing fixing part 131 and formed in parallel with the circuit board ( 130, the upper surface is coupled to the lower surface of the support member 130, the lower surface is coupled to the circuit board and the coil 140, the circuit board 110 including a commutator and a through hole through which the bearing fixing portion 131 passes Rotor 100 comprising a), hemp disposed to face the coil 140 And a net 240, a pair of brushes 250 is formed in contact with the commutator, and a brush, which provides operating power to power supply 260.

As shown, the bearing fixing portion 131 is formed to protrude vertically from the lower surface of the bearing fixing plate 132 and the cylindrical side wall portion 131a in which the bearing 120 is accommodated and fixed therein by interference fit. , And a hole through which the support shaft 230 passes and is formed perpendicular to the lower surface portion or the sidewall portion formed integrally extending from the lower end of the cylindrical sidewall portion 131a to surround the lower surface of the bearing 120. It may include a caulking portion (132c) formed to surround the lower surface of the bearing 120.

When the weight body 150 is further included, the top surface of the weight body 150 may be disposed to be coupled to the bottom surface of the support member 130 and the bottom surface to be coupled to the circuit board 110.

In fact, the flat motor 10 shown in FIG. 9A is inverted by the support member 130 among the components of the rotor 100 of the flat motor 10 shown in FIG. Arranged so as to face 110, the coupling order of the other components is also changed, but the components of the rotor 100 are not changed.

As such, if the configuration is not illustrated in FIG. 8A but illustrated in FIG. 9A, the coil may be wound more thickly. Thus, durability may be equivalent to that of FIG. 8A, but performance may be further improved.

Although the present invention has been shown and described with reference to preferred embodiments as described above, it is not limited to the above-described embodiments and those skilled in the art without departing from the spirit of the present invention. Various changes and modifications will be possible.

Claims

A circuit board including a commutator and a through hole formed therein;

A bearing disposed on the circuit board to protrude to a predetermined height from an upper surface of the circuit board;

A support member including a bearing fixing portion for receiving and fixing the protruding bearing therein and a bearing fixing support plate extending vertically from a lower end of the bearing fixing portion and coupled to an upper surface of the circuit board; And

And a coil coupled to an upper surface of the circuit board or an upper surface of the support member.
The method of claim 1,

The rotor for a flat motor characterized in that it further comprises a weight body coupled to the upper surface of the support member.
The method of claim 1,

The bearing fixing portion is formed to protrude vertically from the upper surface of the bearing fixing plate, and the cylindrical side wall portion in which the bearing is received and fixed therein by interference fit, and a hole through which the support shaft passes, is formed and For the flat motor, characterized in that it comprises an upper surface portion formed integrally extending from the upper end of the cylindrical side wall portion to surround the upper surface or a caulking portion formed perpendicular to the side wall portion to surround the upper surface of the bearing. Rotor.
The method of claim 1,

The bearing fixing plate included in the supporting member has a narrow band shape from one end of the bearing fixing part to the portion where the bearing fixing part is located, and the bearing fixing part is located at the other end located at the front end of the bearing fixing part. Rotor for a flat motor, characterized in that to form a narrow band shape from a portion to a certain length, and then form a fan-shaped shape that gradually expands to the other end of the bearing fixing plate.
The method of claim 1,

Bearing fixing plate included in the support member is a flat motor rotor, characterized in that it is formed to have a shape that is coupled to all the upper surface of the circuit board.
The method of claim 5,

The bearing fixing plate further comprises a coil welding groove formed through one surface and the other surface of the rotor for a flat motor.
The method of claim 5,

And the support member further comprises a rib formed integrally with the bearing fixing support plate to reinforce its strength.
The method of claim 5,

When the support member is formed of a ferromagnetic material, the support member further comprises a eddy current blocking groove formed in a portion of the bearing fixing support plate.
The method of claim 1,

The support member is a rotor for a flat motor, characterized in that it further comprises a weight fixing projection formed on the outer peripheral portion perpendicular to the bearing fixing support plate.
The method according to any one of claims 1 to 9,

The support member and the coil coupled to the circuit board or the weight and the coil coupled to the support member is a flat motor rotor, characterized in that coupled to the adhesive.
A flat motor comprising the rotor of claim 10.
A case having a space formed therein and having a lower opening;

A lower substrate coupled to a lower portion of the case to close the opened lower portion;

A support shaft fixed in the vertical direction so as not to rotate on the lower substrate or the case;

A bearing rotatably fixed about the support shaft; A support member including a bearing fixing part for receiving and fixing the bearing therein and a bearing fixing support plate extending vertically from an upper end of the bearing fixing part to be parallel to the circuit board; An upper surface coupled to a lower surface of the support member and a lower surface coupled to a circuit board; And a circuit board including a commutator and a through-hole through which the bearing fixing portion penetrates.

A magnet disposed to face the coil;

A pair of brushes formed to contact the commutator; And

And a power supply for supplying power to the brush.
The method of claim 12,

The bearing fixing portion is formed to protrude vertically from the lower surface of the bearing fixing plate, the cylindrical side wall portion is formed in which the bearing is accommodated therein and fixed therein, and the hole through which the support shaft is formed is formed and the bearing A flat motor comprising a lower surface portion formed integrally extending from the lower end of the cylindrical side wall portion to surround the lower surface of the lower portion or a caulking portion formed perpendicularly to the side wall portion to surround the lower surface of the bearing. .
The method of claim 12,

The upper surface is coupled to the lower surface of the support member, the lower surface is a flat motor, characterized in that further comprising a weight body coupled to the circuit board.
The method of claim 12,

The support member is a flat vibration motor, characterized in that it further comprises a weight fixing protrusion formed on the outer peripheral portion perpendicular to the bearing fixing support plate.
The method according to any one of claims 12 to 15,

The coil and the weight body coupled to the circuit board or the support member is flat motor, characterized in that coupled to the adhesive.
The method of claim 16,

And a washer installed between the support shaft upper portion and the case.