JP2005199251A - Flat vibration generating motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a conventional flat vibration generating motor is large in size and high in cost because the motor has a rotor mounted with fan-like air core coil and sheet-like non-circular disk and a sheet-like permanent magnet is disposed in the thickness direction of a case. <P>SOLUTION: A rotary shaft for rotating the rotor as a shaft is provided on the inside bottom of a base of the case of a container with a shallow, circular bottom. The annular, six-part split permanent magnet wherein adjacent magnetic poles are different alternately is arranged on the inside wall surface of the base of the case. The mounting angle of metal frame and metal body provided in the rotor is about 100 degrees and has the length to be housed in the ring of the permanent magnet. A coil 7 is wound around on the metal frame side, a magnetic body cover is provided at the center part of the metal frame and metal body. Moreover, a rotary shaft insertion hole is provided at the center thereof, and six pieces of contact terminal boards 6e are arranged so as to surround the rotary shaft insertion hole. Furthermore, two pairs of contact terminal boards alternately connected with each other every one piece are connected to the both ends of the coil. When applying the direct electric current to the coil, two contacts disposed in a power supply part housed in a lid of the case are brought into contact with the contact terminal boards of the opposite polarities respectively. As a result, the direct electric current is supplied to the coil to operate the flat vibration generating motor. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vibration generating device in a manner mode of a portable radio telephone.

Background technology

  In particular, when the public gathers, sudden ringing of the ring tone of the portable radio telephone makes the surrounding person remarkably uncomfortable. Therefore, by installing a vibration generating motor on the portable radio telephone, A method has been adopted in which the phone body is vibrated and held in clothes or the like, so that only the person who has the phone has received an incoming call.

  There are two types of vibration generation motors currently used in portable radio telephones: a cylinder type and a flat type. The former can produce relatively large vibrations, but it has a large shape and is more expensive. In contrast to the drawbacks, the latter has a small number of parts, and thus is small and simple, yet has a feature that vibration can be easily obtained at a low price. The present invention belongs to the latter.

In general, this type of flat vibration generating motor has a permanent magnet disposed on the bottom surface of the case body, and the coil is an air-core coil in which a conducting wire is wound in a substantially fan shape. By making a disk that can rotate eccentrically in close contact with the core coil to form a rotor, the rotor rotates eccentrically, and vibration is generated by the centrifugal force at the time of rotation.
Patent Publication 2000-177784 Patent Publication 2000-069733

Utility model literature

Utility Model Public Disclosure 07-009062

  As a problem to be solved, in order to obtain a larger vibration, a larger disk and an air-core coil are required, which increases the number of parts and increases the manufacturing cost, which necessitates an increase in cost. It is the actual situation.

Means to solve the problem

  In order to solve the above-mentioned problems, the present invention uses a metal container having a shallow bottom and a circular bottom as a case body base, and a rotation shaft for rotating the rotor as an axis is provided at the center of the bottom of the case body base. In order to further reduce the thickness of the case base, an annular permanent magnet magnetized so that the six magnetic poles are alternately different from each other is disposed on the inner side wall surface of the case base.

  The rotor does not use an air-core coil and a disk-shaped rotor as in the prior art, and is a metal that has a length that fits within the ring of the permanent magnet in two directions so that the arrangement angle is about 100 degrees from the center. A frame body and a metal body are used, and a hook portion for winding a coil is provided at the front end of the metal frame body so that the metal frame body is an electromagnet, and the coil is wound here.

  In addition, since the metal frame and the metal body are integral magnetic bodies extended in two directions, a thin and columnar magnetic body covering portion is provided to cover the central portion with an insulator. A rotation shaft insertion hole for insertion into the rotation shaft is provided at the center, and a fan-like shape is formed on the side surface of the magnetic body cover to switch the polarity of the DC voltage applied to the coil by the rotation of the rotor. Six contact terminal plates are arranged so as to surround the rotary shaft insertion hole, and when a DC voltage is applied to this contact terminal plate, the adjacent contact terminal plates have different polarities, so that every other contact terminal plate is alternated. The two ends of the coil are connected to two sets of contact terminal plate groups, and this is used as a rotor.

  A DC voltage is applied to the coil by attaching a power supply unit in the form of a board to the case body cover, attaching a power supply line to the power supply line mounting part provided in the power supply unit, and supplying power via the power supply line. When a DC voltage is applied to the power supply unit, DC voltages of different polarities are applied to the two contacts provided in the power supply unit, so the power supply unit is housed in the case body cover and the case body cover is placed in the case. When attached to the body base, the contact terminal plate provided on the rotor contacts the contact, and a DC voltage is applied to the coil.

  The relationship between the permanent magnet, the metal frame, the contact terminal plate provided on the rotor, and the contact provided on the power supply unit is such that the center of the width of the metal frame is the magnetic core of the permanent magnet disposed. When facing the surface, the polarity of the DC voltage applied to the coil is switched so that the magnetic pole of the electromagnet of the metal frame is switched from N pole to S pole, for example. It contacts with the boundary point of the adjacent contact terminal board of different polarity.

The invention's effect

  Since the flat type vibration generating motor of the present invention is used in a limited space such as a portable radio telephone, it is required to obtain a large vibration with a small size, so that six adjacent magnetic poles are alternately different from each other. An annular permanent magnet with a single magnetic pole is mounted on the inner side wall of the case body, and the rotor has strong vibrations. Therefore, the metal frame and the metal body are unbalanced and arranged at about 100 degrees. A contact terminal that is arranged to surround the rotation shaft insertion hole with a length that fits within the ring, a magnetic body covering portion provided in the center of the metal frame and the metal body, and a rotation shaft insertion hole provided in the center. Since the six plates are alternately connected and connected to the coil wound around the metal frame, the contact provided on the power supply unit to which a DC voltage is applied via the supply line is connected to the contact terminal. When in contact with the plate, a DC voltage is applied to the coil, causing the metal frame to become permanent. When the magnetic core of the magnet is reached, the polarity of the DC voltage applied to the coil is switched and the rotor rotates. Therefore, the coil is wound around only one part of the annular permanent magnet and the metal frame. However, it was possible to obtain vibrations that surpassed that of the prior art, resulting in a low-cost vibration generating motor with fewer parts.

  In addition, the number of magnetic poles of the annular permanent magnet integrated so that adjacent magnetic poles are alternately different from each other is set to four, and the arrangement angle of the metal frame body and the metal body around which the coil is wound is approximately When the number of contact terminal plates arranged on the side surface of the magnetic body cover provided on the rotor is 150, and when the number of magnetic poles of the one-piece annular permanent magnet is eight, the rotor The angle of the metal frame body and the metal body around which the coil is wound is set to about 70 degrees, and the number of contact terminal plates arranged on the side surface of the magnetic body cover provided on the rotor is also eight, and the rotation of the rotor When the metal frame faces each other, even if the magnetic poles of the metal frame are alternately different from each other, the number of magnetic poles of the permanent magnet is integrated as six and the number of contact terminal plates is six. Similar results were obtained.

  A metal container having a shallow bottom and a circular bottom is used as a base of the case body, and six permanent magnets arranged around the rotor so that adjacent magnetic poles are alternately changed into a single ring, and this is the case. The rotor is placed on the inner side wall surface of the body base, and the rotor is placed on the metal frame body out of the metal frame body and the metal body that are unbalanced and have a size that fits within the ring of the permanent magnet, with an arrangement angle of about 100 degrees from the center. The coil is wound around the metal frame body, and a magnetic body cover made of a green body is provided at the center of the metal frame and the metal body. Further, a rotary shaft insertion hole is provided at the center of the metal frame body. Six contact terminal plates are arranged so as to enclose, and this contact terminal plate is alternately connected every other one, and both ends of the coil are connected to two sets of contact terminal plate groups.

  When a DC voltage is supplied to the power supply part housed in the case body cover part via the power supply line, a DC voltage of different polarity is applied to the two contacts provided in the power supply part. A DC voltage is applied to the coil in contact with the contact terminal plate. The point to be noted here is that when the center of the width of the metal frame reaches the magnetic core of the permanent magnet disposed, the coil The contact is made to contact at the boundary of the different polarity contact plate so that the polarity of the DC voltage applied to the electrode is switched and the magnetic pole of the metal frame as an electromagnet is also switched.

  As a result, the flat vibration generating motor according to the present invention includes a rotor having a coil wound around only one portion of a metal frame and a metal frame out of unbalanced metal frames. Since the permanent magnet was made into a single ring and efficiently arranged on the base of the case body, sufficient vibration surpassing that of the prior art was obtained with the minimum number of parts.

  FIG. 1 is a configuration diagram of Embodiment 1 of a flat vibration generating motor 1 of the present invention, and FIG. 2 is a cross-sectional view of the flat vibration generating motor of the present invention cut from the center and viewed from the left and right.

  In FIG. 1, the case body base 2 has an iron plate with a thickness of 0.2 mm, a diameter of 12 mm, a depth of 2.5 mm, and a bottom surface 2a finished into a circular metal container. Since the rotor 6 rotates as an axis, the rotating shaft 4 having a thickness of 1.8 mm and a length of 2.8 mm is provided, and further, the feeder connection port 2 c is provided on the side wall of the outer peripheral portion.

  The case body lid 3 for mounting the power supply unit 8 on the case body base 2 is an iron plate having a thickness of 0.2 mm, a bottom having a circular shape, a diameter of 11.8 mm, and a depth of 1.0 mm. A dish-shaped metal container is finished, and the power supply portion 8 is provided with a power supply attachment port 2c for attaching a power supply wire to the outer peripheral side wall, and further provided with a rotary bearing hole 3a on the bottom surface.

  As shown in FIGS. 1, 2, 5, 7, and 10, the permanent magnets 5 are magnetized in an even number (six) so that adjacent magnetic poles are alternately different from each other. The outer shape can be attached to the inner side wall surface 2b of the case body base 2, and the inner diameter is set to a size that the rotor 6 can accommodate.

  As shown in FIGS. 1 and 2, the rotor 6 has a metal frame 6a and a metal body 6b processed from a steel plate having a thickness of 0.2 mm in two directions so that the disposition angle is approximately 100 degrees. It is arranged and extended to a length that fits within the ring of the permanent magnet 5, and a flange 6 c for winding the coil 7 is provided at the tip of the metal frame 6 a, and polyurethane having a thickness of 0.01 mm is provided here Wind the coated conductor about 300 times.

  Since the metal frame body 6a and the metal body 6b are integrated magnetic bodies, a thin columnar magnetic body covering portion 6d having a diameter of 6 mm and a thickness of 2.0 mm is provided at the center thereof for insulation. Furthermore, a rotation shaft insertion hole 6f having a diameter of 1.2 mm for inserting the rotation shaft 4 is provided at the center, and six fan-shaped contact terminal plates 6e are arranged so as to surround the rotation shaft insertion hole 6f, Furthermore, when the center of the width of the metal frame 6a reaches the magnetic core of the permanent magnet 5 facing the surface due to the rotation of the rotor 6, the polarity of the DC voltage applied to the coil 7 is switched to become an electromagnet. In order to change the magnetic poles of the metal frame 6a, every other contact terminal plate 6e is connected alternately, and both ends of the coil 7 are connected to two sets of contact terminal plate groups 6ea and 6eb.

  Referring to FIG. 1, in order to apply a DC voltage to coil 7, power supply line 9 is connected to power supply line connecting part 8 a provided in power supply part 8, and power supply part 8 is stored in case body cover part 3. When mounted on the case body base 2, the two contacts 8ba and 8bb provided in the power supply unit 8 come into contact with different contact terminal plates 6ea and 6eb, respectively, and a DC voltage is applied to the coil 7.

  The assembly method is such that an annular permanent magnet 5 is attached to the inner side wall surface 2b of the case body base 2 and a rotation shaft insertion hole 6f provided in the rotor 6 is provided on the rotation shaft 4 provided in the bottom 2a of the case body base 2. The power supply unit 8 to which the power supply line 9 is already connected is attached to the case body cover 3, and the tip of the rotating shaft 4 is inserted into the rotary bearing 3 a provided in the case body cover 3. In this way, the case body cover 3 is attached to the case body base 2 so that the power supply line connection port 2c provided in the case body base 2 and the power supply line attachment port 3b provided in the case body cover 3 are matched. The assembly of the flat vibration generating motor of the present invention is completed.

  Now, the operation will be described in detail with reference to the drawings. First, referring to FIG. 5, the inner side of the case body base 2 in the state where no DC power is supplied to the flat vibration generating motor 1 of the present invention. The relationship between the permanent magnet 5 housed in the side wall surface 2b and the rotor 6 is that the center of the width of the metal frame 6a provided on the rotor 6 is the N1 magnetic pole of the permanent magnet 5 facing the metal frame 6a. The metal body 6b comes to rest at a point Q0 at a position displaced 20 degrees in the rotation direction of the hour hand from the S1 magnetic pole facing the metal body 6b at a position P0 point displaced 20 degrees in the reverse rotation direction of the hour hand from the magnetic core. However, since the mounting angle of the metal frame 6a and the metal body 6b is about 100 degrees, the N1 magnetic pole attracts the metal frame 6a in the rotation direction of the hour hand, and the S1 magnetic pole rotates the metal body 6b counter-rotating the hour hand. Since the suction is in the direction, the metal frame 6a at the point P0 where the suction force is canceled. The metal body 6b comes to rest at the point Q0. The positional relationship between the contact terminal plate 6e and the contact 8b at this time is that the contact 8ba is 20 degrees away from the boundary point with the contact terminal plate 6eb. The contact 8bb is in contact with the point a of the terminal plate 6ea at the point b of the contact terminal 6eb that is 20 degrees away from the boundary with the contact terminal plate 6ea.

  5 and 6, when a DC power supply voltage is applied to the feeder 9 attached to the feeder attachment portion 8a of the power supply portion 8 in this state, the DC voltage is applied to the coil 7 wound around the metal frame 6a. If the DC voltage is set so that the metal frame 6a is an S-pole electromagnet and the metal body 6b is an N-pole electromagnet, the metal frame 6a is attracted to the N1 magnetic poles facing each other. The contact 8ba that has stopped at the point a of the contact terminal plate 6ea when the rotation of the hour hand starts to rotate and rotates 20 degrees from the position P0 and reaches the magnetic core P1 of the N1 magnetic pole is also the rotor. With the rotation of 6, it moves 20 degrees from the point a and becomes the point c that is the boundary point of the contact terminal plate 6 eb, and the contact 8 bb moves from the point b to the point d. When the current exceeds the upper limit, the magnetic pole on the metal frame 6a side is switched, and the S pole to the N pole Becomes stone, now it repelled the magnetic poles of N1, so that the further rotational force is accelerated.

  When the metal frame 6ea side further rotates in the rotation direction of the hour hand by 30 degrees and reaches the point P2, the rotational force is further promoted by the attractive force between the magnetic poles S1 and rotates again by 30 degrees to reach the point P3. Then, since the point P3 which is the magnetic core of the S1 magnetic pole is reached, the contact 8ba is in contact with the boundary e point between the contact terminal plate 6eb and the contact terminal plate 6ea, and the contact 8bb side is in contact with the contact terminal plate 6ea. Since the DC voltage applied to the coil 7 is switched to reach the boundary f point of the child 6eb, the metal frame becomes an S-pole electromagnet, and the repulsive force with the S1 magnetic pole further accelerates the rotational force in the rotating direction of the hour hand. This state will be repeated.

  On the other hand, when the power is first turned on, the metal body 6b side becomes an N-pole electromagnet and is attracted to the S1 magnetic pole and tries to rotate from the point Q0 to the point P3 in the counter-rotating direction of the hour hand. Since the magnetic path is longer than the position where the wire is wound, loss due to magnetic resistance results in an attraction force weaker than the attraction force of the S pole electromagnet and the N1 magnetic pole generated by the metal frame 6a. At the point Q1 rotated 10 degrees in the rotation direction of the hour hand, it becomes an S pole electromagnet and is attracted to the N2 magnetic pole, but after 30 degrees, it becomes an N pole electromagnet. It is sucked and accelerated as a rotational force in the rotating direction of the hour hand, and the above state is repeated.

  As shown in FIG. 7, the permanent magnets 5 in which the annular magnetic bodies are alternately magnetized so as to have different polarities are used, and the mounting angle of the metal frame 6a and the metal body 6b provided on the rotor 6 is set. As shown in FIG. 9, the contact terminal plate 6e is set to about 150 degrees, and four contact terminal plates 6e arranged on the side surface of the magnetic body covering portion 6d provided on the rotor 6 are provided as shown in FIG. As shown in FIG. 8, the contact terminals 8ba and 8bb are also connected to the contact terminal plates 6ea and 6eb by alternately connecting every other sheet and connecting the two contact terminal plate groups 6ea and 6eb to both ends of the coil 7, respectively. By making the contact, the flat vibration generating motor 1 capable of obtaining the same effect as in the case of Example 1 could be obtained.

  As shown in FIG. 10, using a permanent magnet 5 in which an annular magnetic body is alternately magnetized so that the poles 8 have different polarities, the mounting angle between the metal frame 6a and the metal body 6b provided on the rotor 6 is approximately. The contact terminal plate 6e disposed on the side surface of the magnetic body covering portion 6d provided on the rotor 6 is also set to eight as shown in FIG. 11, and one contact terminal plate 6e as shown in FIG. Connected alternately, two sets of contact terminal plate groups 6ea and 6eb are connected to both ends of the coil 7, and the contacts 8ba and 8bb are also brought into contact with the contact terminal plates 6ea and 6eb as shown in FIG. Thus, the flat vibration generating motor 1 capable of obtaining the same effect as in the case of Example 1 was obtained.

  In the present invention, a metal frame and a metal body are arranged in an unbalanced manner, and a rotor wound around only one metal frame is housed in a ring of an annular permanent magnet in which a plurality of magnetic poles are integrated. Compared with the vibration of a conventional flat type vibration generating motor in which an air core coil is neatly arranged in the case body and an eccentric disk is fixed to the air core coil, this flat type vibration generating motor is small and simple. However, since vibration exceeding the conventional technology can be obtained, there is no problem even if a portable radio telephone is used, and a small and inexpensive flat vibration motor with good durability can be provided.

The exploded view which showed the implementation method of the flat type vibration generation motor of this invention. (Example 1) Sectional drawing which cut | disconnected this invention flat type vibration generation motor from the center, and looked at right and left. (Example 1) Explanatory drawing which showed the position of the permanent magnet and rotor of this invention flat type vibration generation motor. (Example 1) Explanatory drawing which showed arrangement | positioning and the connection method of the contact terminal board provided in the rotor of the flat type vibration generation motor of this invention. (Example 1) Explanatory drawing which showed the detail of the relationship between the permanent magnet and rotor of this invention flat type vibration generation motor. (Example 1) Explanatory drawing which showed the positional relationship of the contact terminal board provided in the rotor of this invention flat type vibration generation motor, and the contact provided in the power supply part. (Example 1) Explanatory drawing which showed the positional relationship of the permanent magnet and rotor of this invention flat type vibration generation motor. (Example 2) Explanatory drawing which showed the positional relationship of the contact terminal board provided in the rotor of this invention flat type vibration generation motor, and the contact provided in the power supply part. (Example 2) Explanatory drawing which showed arrangement | positioning and the connection method of the contact terminal board provided in the rotor of the flat type vibration generation motor of this invention. (Example 2) Explanatory drawing which showed the position of the permanent magnet and rotor of this invention flat type vibration generation motor. Example 3 Explanatory drawing which showed the relationship between the contact terminal board provided in the rotor of the flat type vibration generation motor of this invention, and the contact provided in the power supply part. Example 3 Explanatory drawing which showed arrangement | positioning and the connection method of the contact terminal board provided in the rotor of the flat type vibration generation motor of this invention. Example 3

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flat type vibration generating motor 2 Case body base 2a Case body base bottom face 2b Inner side wall surface (case body base)
2c Feeding line connection port 3 Case body cover 3a Rotating bearing hole 3b Feeding line mounting port 4 Rotating shaft 5 Permanent magnet 6 Rotor 6a Metal frame 6b Metal body 6c Gutter 6d Magnetic body cover 6e Contact terminal plate 6ea Contact terminal Board (6e is separated into 6ea and 6eb for detailed explanation)
6eb contact terminal board (6e is separated into 6ea and 6eb for detailed explanation)
6f Rotary shaft insertion hole 7 Coil.
8 Power supply part 8a Feed line attachment part 8b Contact 8ba Contact (For the purpose of detailed description, 8b is separated into 8ba and 8bb)
8bb contactor (for detailed description, 8b is separated into 8ba and 8bb)
a Point indicating the position of the contact in the contact terminal board b Point indicating the position of the contact in the contact terminal board c Point indicating the position of the contact in the contact terminal board d Contact in the contact terminal board Point e indicating the position of the contact point f indicating the position of the contact in the contact terminal plate point indicating the position of the contact in the contact terminal plate NN permanent magnet N1 N pole N2 for display N2 for detailed description and N3 for display N3 and N3 for detailed description of N magnetic pole S1 permanent magnet S1 for magnetic pole S1 and display S2 for detailed description of S magnetic pole S2 for detailed description of S magnetic pole Display S3 For detailed description of the S magnetic poles, S3 and display P0 Display indicating the position on the metal frame side P1 Display indicating the position on the metal frame side P2 Display indicating the position on the metal frame side P3 Display indicating the position on the metal frame side Q0 Metal Display showing body side position Q1 Metal body side Display indicating the position of the display Q3 metal side indicating the position of the display Q2 metal side indicating the position

Claims (3)

  For connecting the feeder (9) to the rotating shaft (4) for rotating the rotor (6) as an axis at the center of the bottom surface (2a) and the outer peripheral wall, forming a shallow vessel with a circular bottom. The case body base (2) provided with the feeder connection port (2b) and the inner side wall surface (2b) of the case body base (2) are attached to the rotor (6) to provide a magnetic field, so that adjacent magnetic poles alternate. A permanent magnet (5) which is formed into a single body by magnetizing six poles so as to have different polarities, and is extended from the center to the outside so as to fit within the ring of the permanent magnet (5). A metal body (6b) disposed at an angle of about 100 degrees with respect to the metal frame (6a) provided with the flange (6c) and wound with the coil (7), and the metal body and the metal frame (6a) A magnetic cover (6d) is provided at the center, and a rotary shaft insertion hole (6f) is provided at the center of the magnetic cover (6d). The six contact terminal plates (6e) arranged so as to surround each other are alternately connected to each other, and the rotor (4) connected to the coil (7) and the contact terminal plate (6e) in contact with the coil A power supply unit (8) having a contact (8b) for applying a DC voltage to (7) and a power supply line mounting unit (8a), and a power supply line mounting port (3b) for mounting the power supply line on the outer peripheral wall ) And a rotating bearing hole (3a) for receiving the tip of the rotating shaft inside the bottom surface, and the bottom surface is circular in order to fit the power supply portion (8) inside, and is attached to the case body base (2). A flat vibration generating motor comprising the case body lid (3).   The number of magnetic poles of the annular permanent magnet (5) magnetized so that the magnetic poles are alternately different is set to 4, the arrangement angle of the metal frame (6a) and the metal body (6b) is about 150 degrees, and the rotation axis The number of the contact terminal plates (6e) arranged so as to surround the insertion hole is also four, and the arrangement of the two contacts (8ba, 8bb) provided in the power supply section (8) is also different from the position of the contact terminals of claim 1 A flat type vibration generating motor characterized by having the same action as that of claim 1 even if it is considered to be in contact with the plates (6ea, 6eb).   The number of magnetic poles of the annular permanent magnet (5) magnetized so that the magnetic poles are alternately different is set to 8 poles, the arrangement angle of the metal frame (6a) and the metal body (6b) is about 70 degrees, and the rotation axis The number of contact terminal plates (6e) arranged so as to surround the insertion hole is also eight, and the arrangement of the two contacts (8ba, 8bb) provided in the power supply section (8) is also different from the position of claim 1 A flat type vibration generating motor having the same action as that of claim 1 even when considering contact with the terminal plates (6ea, 6eb).

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