JP4204116B2 - Vibrator holding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibrating machine holding device, which can improve the assembly of a vibrating machine and can be made small-sized for various radio equipment, such as a portable telephone device, which is equipped with the vibrating machine as a soundless notification means and has the vibrating machine holding device holding the vibrating machine. SOLUTION: A motor 1, having metallic terminals 4 and 5 projecting out from a main body part 3, is held by a motor cushion 23, and the metallic terminals 4 and 5 are arranged outside the motor cushion 23. A flexible printed board 11, having an electrification part formed between the metallic terminals and motor holding part, is provided and the metallic terminals 4 and 5 are made to abut against the electrifying part, so that the motor 1 can be provided at the part of a shielding case where it covers a low component or a component group, thereby avoiding increase in the thickness of the housing due to the motor 1.

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibrator holding device that is used in a mobile phone, a pager, and the like and holds a vibrator that silently notifies a user of an incoming call to the mobile phone, a pager, etc. The weight is reduced and the vibration generating means is held and supplied with power only by assembling with a simple structure.
[0002]
[Prior art]
A conventional vibrator holding device used in a mobile phone is configured as shown in FIG. FIG. 5 is a cross-sectional view of a conventional vibrator holding device used in a mobile phone. In FIG. 5, the vibration motor 80 has protruding metal terminals 81 and 82, and is housed in the motor cushion 83 and held by the holding portion 84.
[0003]
The metal terminals 81 and 82 are inserted into through holes 86 and 87 provided in the flexible printed circuit board 85, and are connected to lands 88 and 89 formed around the through holes 86 and 87 by solders 90 and 91, respectively. Yes. These configurations are disclosed in Japanese Patent Laid-Open No. 10-126070 filed by the present inventor.
[0004]
[Problems to be solved by the invention]
However, in the above configuration, the metal terminals 81 and 82 are inserted into the through holes 86 and 87 of the flexible printed circuit board 85, and the metal terminals 81 and 82 and the lands 88 and 89 are connected by the solders 90 and 01. However, in order to reduce the size and weight of the device, the metal terminals 81 and 82 are made very small, and the through holes 86 and 87 through which the small metal terminals 81 and 82 are inserted are also provided. Since it is very small, it has been difficult for an operator to insert it manually.
[0005]
Furthermore, the soldering work after the insertion work must be performed while maintaining the state where the metal terminals 81 and 82 protrude from the through holes 86 and 87, that is, the insertion completion state. Because it was a work, it gave a great burden.
[0006]
In addition, since the vibration motor 80 is not restricted in the rotation direction of the main body, depending on how the vibration motor 80 is attached, the end surface of the flexible printed circuit board 85 may come into contact with the upper surface of the holding portion 84, and the vibration motor 80 The generated vibration is transmitted to the holding portion 84 via the flexible printed circuit board 85, causing irregular noise.
[0007]
The present invention has been made in view of the above-mentioned problems, and the object of the present invention is not to complicate the shape of components such as an elastic holding member and a holding member, and to make the fuselage thinner and smaller. It is an object of the present invention to provide a vibrator holding device that realizes a configuration that can reduce the weight and can hold the vibration generating means only by being assembled with a simple structure and can supply power to the vibration generating means.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the vibrator holding device according to claim 1 of the present invention has a metal terminal protruding outward from the main body, and is driven by applying a voltage to the metal terminal to vibrate. A vibration generating means for generating an elastic member, an elastic holding member that is partially disposed between the main body portion and the metal terminal and has elasticity to hold the main body portion, and holds the elastic holding member a holding member, and the flexible substrate feeding portion is formed at a position opposed to the metallic pin comprises an elastic force of the elastic holding member be imparted to the metal terminals of said metal terminals It is made to contact | abut to the said electric power feeding part.
[0009]
Therefore, according to the first aspect of the present invention, since the vibration generating means can be held by simple assembly and the necessary contact pressure can be secured without increasing the thickness of the metal terminal, the motor is provided. It is possible to reduce the thickness of the aircraft.
[0016]
The wireless device of claim 2 of the present invention has as comprising a vibrator holding apparatus according to claim 1.
[0017]
Thus, the invention described in claim 2 is provided with the vibrator holding apparatus according to the claim 1, it is possible to provide a wireless device having the effect described in claim 1.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
According to the vibrator holding device of the first aspect of the present invention, the vibration generating means which has a metal terminal protruding outside from the main body and is driven by applying a voltage to the metal terminal to generate vibration. And an elastic holding member that is partially disposed between the main body portion and the metal terminal and has elasticity to accommodate the main body portion, a holding member that holds the elastic holding member, and the metal comprising: a flexible substrate feeding portion is formed at a position opposed to manufacturing pin, and abut against the elastic force of the elastic holding member be imparted to the metal terminals of the metal terminal to the power supply unit It is made to let you.
[0022]
As described above, since it is possible to supply power to the vibration generating means by a simple assembling method regardless of where the holding portion is provided from each configuration, it is possible to reduce the size by simplifying the thickness of the airframe equipped with the motor. The vibration generating means can be held by simple assembly.
[0023]
Moreover, since it is not necessary to increase the contact pressure by increasing the plate thickness of the metal terminal, it has the effect of reducing the weight of the vibrator holding device.
[0026]
Further, according to the wireless device of claim 2 of the present invention is provided with the vibrator holding apparatus according to the claim 1, the wireless devices act to androgynous the invention described in claim 1 Can also be realized.
[0027]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of a portable radio telephone provided with a vibrator holding device according to an embodiment of the present invention, FIG. 2 is a perspective view showing a motor and a shield case, and FIG. 3 is a cross-sectional view during assembly. 4 is a longitudinal sectional view at the time of assembly.
[0028]
1 to 4, a cylindrical DC coreless motor is used as the vibration generating motor 1. Although not specifically illustrated, due to its configuration, the rotating shaft, a bearing for supporting the rotating shaft, a cup-shaped coil and commutator provided integrally with the rotating shaft, a permanent magnet and a commutator provided inside the cup-shaped coil These are housed in a metal motor case, and a main body portion 3 is constituted by a resin bracket 2 on the bottom surface.
[0029]
When the brush is provided with metal terminals 4 and 5 integrally joined by spot welding, and the resin bracket 2 having an outer periphery formed by the arc portion 6 and the flat portion 7 is assembled to the motor case, the flat portion 7 protrudes somewhat from the motor case, and the two metal terminals 4 and 5 protrude from the flat portion of the resin bracket 2 and are bent toward the distal end side of the main body.
[0030]
Further, minute contact projections 8 and 9 are formed in a convex shape at the tip of the tip portion on the side opposite to the main body portion 3 by drawing, and are set to a predetermined height from the flat portion 7. The material of the metal terminals 4 and 5 is a clad material obtained by metallurgically joining both phosphor bronze for spring and gold, and only the contact protrusions 8 and 9 are made of gold.
[0031]
A semi-cylindrical weight 10 is fixed to the tip of the rotating shaft of the motor 1 by caulking. The weight 10 is made of copper-tungsten alloy or tungsten alloy having a specific gravity of 12 g / cc or more.
[0032]
A flexible printed circuit board 11, which is a flexible substrate, has a conductor circuit portion formed by copper foil or copper plating on one or both sides of a polyimide base film, and an insulating cover made of a material such as polyimide or polyester on the surface thereof. The conductor circuit part is protected.
[0033]
This flexible printed circuit board 11 has a contact piece 16 comprising two round holes 12, 13 and lands 14, 15 formed on one surface, and a tongue piece having a conductor exposed portion 17 formed on the other surface. It consists of 18. The lands 14 and 15 and the conductor exposed portion 17 both have nickel plating on the conductor circuit portion and further gold plating on the conductor circuit portion to prevent oxidation of the conductor circuit portion on which the insulating cover is not formed.
[0034]
In addition, the glass-filled epoxy substrate 19 is adhered or bonded to the other surface except for the contact piece portion to prevent the bonding surface from being bent. That is, the portion that is not attached can be bent.
[0035]
The motor cushion 23 is made of an elastic material such as silicon rubber, urethane rubber, or ethylene propylene rubber, and has an inner surface 24 that is substantially the same as the outer shape of the motor 1. The upper surface 25 and the bottom surface 26 have an inner surface 24, an upper surface 25, and a bottom surface 26. A slit (gap) 27 that is divided between the upper surface 25 and the lower surface 28 opposite to the upper surface 25 is formed substantially at the center of the lower surface 28. It is installed. Further, a cutout hole 30 is provided in a part of the bottom surface 26 and a part of the lower surface 28 so as to be connected to the slit 27.
[0036]
On the printed circuit board 33, a key sheet 34 on which characters and symbols are printed, a receiver 35 that outputs sound, a liquid crystal display 36 that displays characters, symbols and numbers, and the like are mounted. On the back side, an oscillator that controls the oscillation frequency with voltage and a plurality of resistors are mounted, and a receiving circuit unit 37 consisting of a low-noise amplifier, a fast mixer, etc. is formed, and a temperature-compensated crystal oscillator that controls the frequency stably and a plurality of Resistors and the like are surface-mounted to form a radio circuit unit 38.
[0037]
Here, the receiving circuit unit 37 and the radio circuit unit 38 have lower heights in the receiving circuit unit 37. The receiving circuit unit 37 and the wireless circuit unit 38 are covered with a shield case 40 made of a resin that prevents intrusion and leakage of electromagnetic waves from the outside.
[0038]
A connector 41 holding a spring is surface-mounted on a portion not covered with the shield case 40, and is held when the conductor exposed portion 17 of the flexible printed circuit board 11 is disposed above the connector 41. The spring spring biases the conductor exposed portion 17 of the flexible printed circuit board 11, and the printed circuit board 33 and the flexible printed circuit board 11 are electrically connected.
[0039]
The shield case 40 is molded from a resin material such as acrylonitrile, butadiene, styrene, etc., and its surface is subjected to electroless copper plating to prevent the passage of electromagnetic waves, and the surface is further subjected to electroless nickel plating. The rust-proofing of electroless copper plating is done.
[0040]
The shield case 40 that covers the receiving circuit unit 37 and the radio circuit unit 38 has an uneven surface, such as a concave shape compared to a portion that covers a high component or component group when covering a low component or component group. In this embodiment, since the receiving circuit unit 37 is lower than the radio circuit unit 38, the concave portion of the shield case 40 covers the receiving circuit unit 37, and the convex portion covers the radio circuit unit 38. .
[0041]
A motor holding portion 42 to which the motor 1 is mounted is formed on the surface side of the shield case 40 at a part of the recess. The motor holding portion 42 has a substantially rectangular frame shape, and includes a long right and left side surfaces 43 and 44 and short front and rear side surfaces 45 and 46.
[0042]
The right and left side surfaces 43 and 44 are divided substantially at the center, and the front side surface 45 is cut into a U-shape to avoid contact with the rotating shaft when the motor 1 is attached to the motor holding portion 42. A notch 47 is provided, and a flat surface portion 48 is integrally formed on the rear side surface 46 so as to stand from the base and the upper surface is formed into a flat surface.
[0043]
Here, since the motor 1 matches the flat portion 7 and the flat portion 48 of the shield case 40 and press-fits and holds them in the motor holding portion 42, the length (width) of the motor cushion 23 in the short direction is the right and left side 43. 44, and the distance between the front and rear side surfaces 45 and 46 is such that the bottom surface 26 of the motor cushion 23 is crushed by a predetermined amount so that the motor body 3 is pressed against the front side surface 45. .
[0044]
Two bosses 49 and 50 are erected in the vicinity of the right and left sides, the pitch of which is the same pitch as the two round holes 12 and 13 of the flexible printed circuit board 11, and the diameters of the bosses 49 and 50 are round holes 12. , Somewhat smaller than 13 diameters.
[0045]
Although the motor cushion 23 in which the motor 1 is enclosed is press-fitted into the motor holding part 42, for example, when the motor cushion 23 is reversed after press-fitting, the motor 1 falls from the motor holding part 42 depending on the dimensions of the motor cushion 23 and the motor holding part 42. Such a problem may occur.
[0046]
If dimensional tolerances are strictly controlled at this time, the cost increases, so hooking claws 52 are provided on the right and left side surfaces 43 and 44, and the motor cushion 23 is provided with the hooking claws 52 when press-fitted into the motor holding portion 42. Due to structural considerations such as providing an engagement groove 53 that engages with the two and engaging the both, falling is prevented without increasing the number of parts.
[0047]
On the back surface of the shield case 40, ribs 54 are provided upright to divide the circuit portion and surround the periphery. A plurality of claws 55 are provided on the outer periphery for hooking on the printed circuit board.
[0048]
The resin cover 58 and the resin case 59 constitute a housing that accommodates the motor 1, the flexible printed circuit board 11, the printed circuit board 33, the shield case 40, and the like. The resin cover 58 has the projections of the key sheet 34 inserted therein, and has the same number of key holes 60 as the projections of the key sheet 34, the sound holes 61 for guiding the sound generated from the receiver 35 to the outside, and the size of the liquid crystal display 36. An opening 62 and the like are provided. The opening 62 is covered with a transparent window 63.
[0049]
On the other hand, the inner surface of the resin case 59 intersects the slit 27 formed on the upper surface 25 of the motor cushion 23 accommodated in the holding portion 42 of the shield case 40, and when the motor cushion 23 is accommodated in the housing Two pressing portions 64 that press a predetermined amount of the upper surface 25 of the motor holding portion 42 are provided in parallel. The right and left side surfaces 43, 44 of the motor holding portion 42 are equal to the height of the motor cushion 23, or the right and left side surfaces 43 , 44 is slightly lowered to prevent the slit 27 from expanding when pressed against the motor cushion 23. A mounting portion 66 to which a battery 65 for supplying power is mounted is formed on the outer surface of the case 59.
[0050]
Next, the assembly and operation of each part in the above embodiment will be described.
The shield case 40 is fixed to the printed circuit board 33 by hooking a plurality of claws 55 to the end surface of the printed circuit board 33 while covering a part of one side (back surface) of the printed circuit board 33.
[0051]
Next, the contact piece 16 of the flexible printed board 11 is accommodated in the motor holding part 42 of the shield case 40, and the conductor exposed part 17 of the tongue piece 18 is disposed on the connector 41 on the printed board 33. In this way, the flexible printed circuit board 11 is placed on the shield case 40.
[0052]
Here, by inserting the two bosses 49 and 50 of the shield case 40 and the two round holes 12 and 13 of the flexible printed circuit board 11 corresponding to these, the flexible printed circuit board 11 is in a fixed position with respect to the shield case 40. It is supposed to be placed on.
[0053]
In the motor 1, the flat portion 7 of the resin placket 2 is fitted into the notch hole 30 of the motor cushion 23, the metal terminals 4 and 5 are projected further outward from the lower surface 28 of the motor cushion 23, and the main body portion 2 is the motor cushion 23. When the slit 27 is expanded and passed, the main body 3 can be accommodated in the motor cushion 23. That is, the main body 3 is contained while the lower surface of the motor cushion 23 is interposed between the metal terminals 4 and 5 and the main body 3.
[0054]
Next, when the motor cushion 23 enclosing the motor 1 is press-fitted and held in the motor holding portion 42, the flat portion 7 of the motor 1 and the flat portion 48 of the shield case 40 are matched so that the motor body 3 And the contact protrusions 8 and 9 of the metal terminals 4 and 5 are bent and contacted in the same manner as the lands 14 and 15 formed on the corresponding contact piece 16 respectively. Accordingly, the contact force at this time is the same for both terminals.
[0055]
At this time, the motor cushion 23 that encloses the motor 1 may be dropped due to the application of its own weight when the reaction force of the abutting force acts in the removal direction and is reversed. Therefore, the engaging claw 52 is engaged with the engaging groove 53 to be stably held, and at the same time, the motor cushion 23 is also positioned in the rotational direction.
[0056]
Since the rotation direction of the motor cushion 23 and the motor 1 is restricted with respect to the holding portion 42 in this way, the distance between the protruding portion 29 and the metal terminals 4 and 5 is also maintained at a predetermined amount, so that the elastic force described later is 2 The same effect is applied to the two metal terminals 4 and 5.
[0057]
A key sheet 34, a receiver 35, and a liquid crystal display 36 together with a shield case 40, a printed circuit board 33 to which the motor 1 is attached are accommodated in a casing made up of a cover 58 and a case 59, and a transparent window 63 is provided in an opening 62. When the battery 65 is attached to the mounting portion 66, the portable wireless device is completed.
[0058]
Here, the shield case 40 provided so as to cover the components mounted on the printed circuit board 33 has a concave portion covering the receiving circuit portion 37, which is a low component group, and a wireless circuit portion, which is a high component group A portion covering 38 is convex and covered, and the covered portion is uneven. If the holding portion 42 for holding the motor 1 is provided in the concave portion, the thickness of the housing can be made thinner than that provided in the convex portion by the level difference between the concave portion and the convex portion.
[0059]
Here, a method for supplying power to the motor 1 provided in the recess will be described in detail. The flexible printed circuit board 11 arranged on the convex part is bent slightly in the vicinity of the boundary between the convex part and the concave part, the lands 14 and 15 are directed to the motor 1 side, and the contact piece 16 is made of the metal terminals 4 and 5 and the shield case. It is sandwiched between 40.
[0060]
At this time, the reaction force of the metal terminals 4 and 5 and the elastic force of the motor cushion 23 act on the lands 14 and 15, but the lands 14 and 15 are prevented from being deformed, that is, bent, and the metal terminals 4 and 5 are bent. The contact projections 8 and 9 of the metal terminals 4 and 5 are predetermined by the combination of the reaction force (same as the above-mentioned contact force) due to bending and the repulsion force (elastic force) due to the protrusion 29 of the motor cushion 23 being bent. The contact pressure is set to abut against the lands 14 and 15.
[0061]
That is, the reaction force caused by the bending of the metal terminals 4 and 5 is determined by the section modulus, the longitudinal elastic modulus of the material, the length of the beam, and the like. In this embodiment, the weight of the device is reduced. The plate thickness is made of an extremely thin material of 0.05 mm, and the predetermined deflection at this time is small with respect to an appropriate contact force. Therefore, a repulsive force due to the bending of the protrusion 29 by a predetermined amount is added to ensure a predetermined contact force of the contact protrusions 8 and 9 against the lands 14 and 15.
[0062]
If there is no shield case for suppressing the bending on the back side of the lands 14 and 15 of the flexible printed circuit board 11, an inflexible member such as a glass-filled epoxy resin board may be provided on the back surface of the flexible printed circuit board 11 by adhesion or adhesion. Absent. Naturally, at this time, the inflexible member is not provided in the portion where the bent portion is formed.
[0063]
When a mobile wireless device receives an incoming call, it can notify the user that the incoming call has been received by sound or light, but can also be silently notified by vibration. In this case, when an incoming call arrives, a voltage is applied from the printed board 11 to the metal terminals 4 and 5 through the connector 41, the conductor exposed portion 17, and the lands 14 and 15, and the rotating shaft provided with the weight 10 rotates.
[0064]
At this time, if the mass of the weight 10 is m, the center of gravity radius is r, and the angular velocity of the rotating shaft is ω, a centrifugal force F calculated by the product of m, r, and the square of ω is generated in the radial direction of the rotating shaft. The casing vibrates with the generation of centrifugal force. For example, it is possible to detect the arrival of an incoming call by experiencing the vibration of the casing by being generated in the pocket of the clothes of the user.
[0065]
【The invention's effect】
As described above, in the present invention, the motor having the metal terminal protruding outside from the main body is held by the motor cushion, and the metal terminal is disposed outside the motor cushion. Since the flexible printed circuit board in which the power feeding unit is formed between the motor holding unit and the motor cushion is applied to the metal terminal so that the metal terminal is brought into contact with the power feeding unit, the motor is The shield case can be provided in a part that covers a low part or group of parts, and it is possible to avoid increasing the thickness of the housing by the motor and to secure the necessary contact pressure without increasing the thickness of the metal terminal. Can do.
[0066]
Further, the motor can be easily connected by simply press-fitting it into the holding portion, and the assembly can be improved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a portable radio telephone provided with a vibrator holding device in an embodiment of the present invention;
FIG. 2 is a perspective view showing a motor and a shield case;
FIG. 3 is a cross-sectional view during assembly;
FIG. 4 is a longitudinal sectional view during assembly,
FIG. 5 is a cross-sectional view of a conventional vibrator holding device used in a mobile phone.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 80 Motor 2 Resin bracket 3 Motor main-body part 4, 5, 81, 82 Metal terminal 6 Arc part 7 Flat part 8, 9 Contact protrusion
10 Weight
11, 85 Flexible printed circuit board
12, 13 round holes
14, 15 rand
16 Contact piece
17 Exposed conductor
18 Tongue
19 Glass-filled epoxy board
23 Motor cushion
24 Inside
25 Top view
26 Bottom
27 Slit
28 Bottom
29 Protrusion
30 Notch hole
33 Printed circuit board
34 Key sheet
35 receivers
36 Liquid crystal display
37 Receiver circuit
38 Radio circuit
40 Shield case
41 connectors
42, 84 Motor holder
43 Right side
44 Left side
45 Front side
46 Rear side
48 Plane section
49, 50 boss
52, 55 Claw
53 engaging groove
54 Ribs
58 Cover
59 cases
60 Keyhole
61 sound hole
62 opening
63 Transparent window
64 Pressing part
65 batteries
66 Mounting part
86, 87 Through hole
90, 91 solder

Claims (2)

A vibration generating means that has a metal terminal protruding outward from the main body and is driven by applying a voltage to the metal terminal to generate vibration;
An elastic holding member having a portion disposed between the main body portion and the metal terminal and having elasticity for accommodating the main body portion;
A holding member for holding the elastic holding member;
And a flexible substrate feeding portion is formed at a position opposed to the metal pin,
A vibrator holding device , wherein an elastic force of the elastic holding member is applied to the metal terminal and the metal terminal is brought into contact with the power feeding portion. A wireless device comprising the vibrator holding device according to claim 1 .

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