KR200225274Y1 - The flat vibration motor - Google Patents

Abstract

The present invention provides a flat vibration motor with two armature coils, which reduces manufacturing costs and has no starting point. The brush remains in contact with the contaminant even when the rotor stops due to the interruption of the voltage to the motor. In addition, since the force acting in the same direction on the electric coil by the stator's magnetic field can flow a current to the electric coil so that a certain trouble can be generated, the rotor is certainly fixed in the fixed direction without regulating the stop position of the rotor. It is possible to start and rotate in this invention.

Description

Flat Vibration Motors {THE FLAT VIBRATION MOTOR}

The present invention relates to a compact flat vibration motor that is used when vibration is received on a cellular phone or pager.

Conventionally, flat iron vibration vibration motors of this type have generally been used. The flat ironless vibration motor is composed of a magnet part fixed to the lower part of the casing, a circular rotor of a rotating material arranged so as to face the magnet part, and a shaft arranged at the waist of the rotor. The three armature coils are disposed together with the resin material, and the rotor itself is eccentric so that the centrifugal force generated during the rotation of the rotor generates vibration and the three armature coils are mounted on the rotor so that no starting point is generated. It is designed.

The flat vibration motor of the prior art requires at least three coils because torque is generated by the magnet and the magnetic field for three coils in which the directions of current flow are interchanged. This is because when the rotor is stopped in an electric coil with a rotation angle of about 90 degrees or less, no rotational force is generated in the armature coil located in the middle of the magnet polarity. It was impossible to shorten the coil.

The present invention solves the problems of the above technology, and reduces the manufacturing cost by using two armature coils, and at the same time characterized by providing a flat vibration motor having no starting point.

1 is an exploded perspective view of a flat vibration motor of the present invention

FIG. 2 is a longitudinal sectional view of an essential part of the flat vibration motor of FIG.

Figure 3 is a plan view of the brush of the present invention

4 (a) to 4 (c) are cross-sectional views taken along the line X-X 'of the rotor in plan view, bottom view and plan view.

5A and 5B are a plan view and a bottom view of a concentrator substrate

Fig. 6 (a) (b) is an exploded state diagram of the motor showing the connection diagram of the rotor and the positions of the rotor, the conator, the stator, and the brush contact.

7 (a) to 7 (d) are operating state diagrams showing the principle of rotation of the motor when the rotor is located at 0 ° to 45 °.

8 (a) to (d) are operating state diagrams showing the principle of rotation of the motor when the rotor is located at 60 to 105 degrees.

9 (a) to 9 (d) are operating state diagrams showing the principle of rotation of the motor when the rotor is located at 120 ° to 165 °.

10 is an operation state diagram of the motor when the arrangement position of the armature coil of the present invention is set to 165 degrees

※ Explanation of code for main part of drawing ※

3: casing 4: stator

5 rotor 10 conator

11: armature coil 12: brush

14: condenser substrate 20a: first conductor (printed wiring)

20b: Second conductor (printed wiring) 20c: Third conductor (printed wiring)

21: weight member

In order to solve the above problems, the flat vibration motor according to the present invention is characterized by satisfying the following requirements. The flat cylindrical casing is divided into eight equal parts in the circumferential direction and arranged in the form of a ring magnetized to the N pole and the S pole. The stator is disposed so that the angle between the first armature coil and the second armature coil formed at 60 degrees against the surface of the stator and winding the coil is 150, and the first armature coil and the second armature coil At the interval, a non-magnetic weight member is provided, and a disk-shaped rotor axially supported by a rotating material on the casing, and is installed on the bottom of the rotor to start winding the first electric coil on the first conductor and then the second conductor. The first, fourth, seventh, and tenth conductors are connected to a plurality of conductors which start winding the second electric coil and end the winding of the first and second electric coils on the third conductor. The capacitor is shorted to the first conductor, and the third, sixth, ninth, and twelfth capacitors are shorted to the second conductor, and the second, fifth, eighth, and eleventh capacitors The condenser substrate is short-circuited to a third conductor and 12 condensers are disposed in the circumferential direction, and the brush is formed to be in contact with the condenser at an angle of 135 degrees to supply electric power to the armature coil. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, this motor is a casing (3) consisting of a flat cylindrical case (1) with a closed top and a disc shaped bracket (2) fitted to an opening (17) at the lower end of the case (1). The ring stator 4 and the circular rotor 5 are arranged inside the slit.

In the bracket 2, a ring-shaped stator 4 and a condenser 10, which will be described later, are connected to the lower end of the rotor 5, and one brush 12a for flowing current through the armature coil 11 ( 12b is disposed so that the brushes 12a and 12b are soldered onto the brosibase 13 formed to solder the lead wires not shown at the end to be connected to the power source, and the brush 12a of the positive electrode and the brush of the negative electrode ( 12b), as shown in Fig. 3, the contact points a, b, and c are formed so as to be able to contact the concentrator 10 at an electric angle of 135 degrees.

In addition, the stator 4 is divided into eight equal parts in the circumferential direction, each composed of eight stators (4a ~ 4h) formed on a weak line of 45 degrees each, each stator is magnetized by the magnetic pole of the N pole and the S pole The two brushes 12a and 12b are fixed on the bracket 2 by suitable means such as adhesive so that the contact portions in contact with the condenser 10 can coincide with each other.

The rotor 5 is mounted at a center of the rotor 5 as shown in Figs. 4 (a), 4 (b) and 4 (c) by inserting the rotating shaft 16 and having an arrangement pitch of 120 degrees. As a non-magnetic metal disposed between the flat first and second armature coils 11a and 11b in the form of a weak wire, and the first armature coil 11a and the second armature coil 11b. The flat weight member 21 formed in the form of a weak wire of 90 degrees each is fixed to the circular conduit substrate 14 by a resin 15 and formed together, as shown in FIGS. 1 and 2. The conduit substrate 14 is attached to the metal 18 fitting into the opening 17 formed in the center of the case 1 and the metal 18 'fitting into the opening 19 formed in the center of the bracket 2. It faces against the stator 4 and is supported by the rotating material of the casing 3.

As shown in Figs. 5A and 5B, the first armature coil 11a, the second armature coil 11b and the weight member 21 are fixed with resin 15 and formed on the bottom surface A plan view and a bottom view of the substrate 14 are shown, and soldering the hander to the surface of the conduit substrate 14 at the start and end of the first armature coil 11a and the second armature coil 11b, respectively. Print wirings 20a, 20b, and 20c, which are conductors, are formed, and the first end of the first armature coil 11a is connected to the inverted attaching portion 23 of the print wiring 20a, which is the first conductor. The end of the armature coil 11a and the second armature coil 11b is soldered to the inverting attaching portion 24 of the printed wiring 20c, which is the third conductor.

In addition, as shown in FIG. 5 (b), twelve concentrators 10a to 10l are radially installed on the surface of the concentrator substrate 14 so that the first, fourth, seventh, and tenth concentrators ( 10a, 10d, 10g, and 10j are short-circuited to the printed wiring 20a, which is the first conductor, through the through holes 30a to 30d, and the third, sixth, ninth, and twelfth capacitors 10c. (10f) (10i) (10l) are short-circuited to the printed wiring (20b) of the second conductor through the through holes (31a to 31d), and the second, fifth, eighth, and eleventh contributors (10b) (10e). 10h and 10k are short-circuited to the printed wiring 20c, which is the third conductor, through the ring-shaped through hole 33, so that the first and second armature coils (as shown in FIG. Corresponding to 11a) and 11b, the twelve contributors 10a to 10l and the armature coils 11a and 11b have a connected configuration as shown in the connection diagram of FIG.

Reference numeral 35 in Fig. 6 (a) denotes an electric noise prevention resistor, and Fig. 6 (b) shows the contact points of the rotor 5, the contators 10a to 10l, the stators 4a to 4h, and the brushes 12a and 12b. A diagram showing the relative positions of a and b is shown.

7, 8, and 9 show the operating state of the present invention, so that the brushes 12a and 12b are positioned between the rotor 5 and the stator 4, and thus the intervals applied to the armature coils 11a and 11b. The force is applied to the armature coils 11a and 11b in a constant direction by the direction of the current flowing through the armature coils 11a and 11b and the left hand rule of framing by the magnetic field of the stator 4, When the rotor 5 rotates due to this rotational force, and no voltage flows, no current flows through the armature coils 11a and 11b, so that the force by the magnetic field of the stator 4 is not applied to the rotor 5 to rotate. Although this stops, the stop position is not specifically determined.

Therefore, the examples described later describe how to configure the start point to be independent of the stop position.

Fig. 7 (a) shows the position when the rotor 5 is 0 degrees, and the electric current is the brush 12a → conductor 10h → armature coil 11b → conductor 10f → conductor 10c. ? Brush 12b flows in the direction of the arrow, and according to the law of the left hand of framing, a rotational force of 2F is generated between the stator 4d and 4e and the armature coil 11b in the direction of arrows A and A '. The rotor 5 is started.

Fig. 7 (b) shows the position when the rotor 5 is 15 degrees, and the electric current is the brush 12a → conductor 10g → conductor 10d → armature coil 11a → conductor 10h. ¡Æ in the direction of arrows B and B 'between the stator 4a and 4b and the armature coil 11a, according to the left-hand rule of framing, because it flows in the direction of the arrow in the order of condenser 10b to brush 12b. A rotation force of 2F is generated to start the rotor 5.

Fig. 7 (c) shows the position when the rotor 5 is 30 degrees, and the electric current is the brush 12a → conductor 10f → armature coil 11b → conductor 10h → conductor 10b. ? Brushing 12b and condenser 10g → conductor 10d → armature coil 11a → conductor 10h → conductor 10b → brush 12b By the law of the left hand of the rotor, the rotation force of 2F is generated between the stator 4a and the armature coil 11a and between the stator 4f and the armature coil 11b in the direction of arrows C and C 'and the rotor 5 is started. It is to let.

Fig. 7 (d) shows the position when the rotor 5 is 45 degrees, and the electric current is the brush 12a → conductor 10f → armature coil 11b → conductor 10h → conductor 10b. ¡Æ since the current flows in the direction of the arrow in the order of the brush 12b, a rotational force of 2F is generated between the stator 4e and 4f and the armature coil 11b in the direction of arrows D and D 'by the left-hand rule of framing. To start the rotor 5.

Similarly, FIGS. 8A to 8D show when the rotor 5 is located at 60 degrees, 75 degrees, 90 degrees and 105 degrees, and FIGS. 9A to 9D show the rotor ( 5) is located at 120 degrees, 135 degrees, 150 degrees, 165 degrees, it is possible to start even if the rotor 5 is located as described above, and the rotor 5 is not shown in the drawing, but the rotor 5 is 165 degrees ~ Maneuvering is smoothly in any position at 360 degrees.

As described above, even when the rotor 5 stops at any position, since the brushes 12a and 12b are always in contact with the condulator 10, the current supplied by the brushes 12a and 12b as an object is stator 4. Selectively in one or two directions of the armature coils 11a and 11b so that a force acting in the same direction in one direction or two directions of the armature coils 11a and 11b can be generated by a constant torque 2F. Because of the flow, the vibration motor without starting dead point can be realized without restricting the stop position of the rotor 5 to a predetermined position.

7 (a)-(d), 8 (a)-(d), and 9 (a)-(d) illustrate that the rotor 5 can be started at any position, and the rotor (5) indicates that the rotor 12 is continuously rotating in the same direction, and corresponding to the stator 4 in one or two directions of the armature coils 11a and 11b while the voltage is supplied to the brushes 12a and 12b. Rotation can be continued because a current flows so that a constant rotation torque 2F occurs in a constant direction.

10 (a) to 10 (d) show a case in which the armature coils 11a and 11b have an arrangement angle of 165 degrees. In the case of FIG. 10 (a), between the armature coil 11b and the stator 4d. In FIG. 10 (b), a rotation force of 2F is generated in the directions of arrows W and W 'between the armature coil 11a and the stator 4a and 4b, and FIG. (c) A rotation force of 3F is generated in the directions of arrows X, X 'and X' between the armature coil 11a and the stator 4a and the armature coil 11b and the stator 4e and 4f, and FIG. (d) The rotational force of F is generated in the direction of the arrow Y between the armature coil 11b and the stator 4e. If the rotational force is not stable with F to 3F, the rotational force may not start at F. Therefore, it is impossible to rotate the motor having the arrangement position of the present invention at 150 degrees with the same rotational force 2F and other stable torques that differ in the result.

According to the present invention, even when the voltage of the motor stops the supply and the rotor stops, the brush is still in contact with the conductor, and the force acting in the same direction on the electric coil by the stator's magnetic field is generated by a certain trouble. Since it is possible to send an electric current to the electric coil so that it can be made, it is possible by the present invention to start and rotate the rotor in a certain direction without restricting the stop position of the rotor.

Therefore, due to the circular rotor, the resistance of the secondary device is reduced to prevent noise generation, thereby extending the life of the motor, and as a whole, because the large weight member is installed, its size is small, and it is stronger than the conventional motor. Can cause

In addition, since the number of coils is two, the manufacturing cost of the motor is reduced, and a special manufacturing coil for installing the rotor stop position is not required and special parts are not added. The motor can be improved and a motor with high production efficiency can be made.

Claims (1)

In the flat cylindrical casing and the stator arranged in a ring shape which is divided into eight equal parts in the circumferential direction and magnetized to the N pole and the S pole, It is arranged so that the angle between the first armature coil and the second armature coil formed at 60 degrees while facing the stator and the coil winding is 150, and a nonmagnetic material is formed in the gap between the first armature coil and the second armature coil. A rotor in the form of a disc, the weight member of which is installed and is supported by a rotating material on the casing; It is installed on the bottom of the rotor and starts winding the first electric coil on the first conductor, and starts winding the second electric coil on the second conductor, and the first and second electricity on the third conductor. The first, fourth, seventh, and tenth contributors are short-circuited to the first conductors, and the third, sixth, ninth, and twelfth conmi- tors are connected to a plurality of conductors that have been wound up. The data is short-circuited to the second conductor, and the second, fifth, eighth, and eleventh concentrators include: a emitter substrate having twelve emitters short-circuited to the third conductor; And a brush configured to contact the commutator with an electrical angle of 135 degrees to supply electric power to the armature coil.