JP2000124637A - Vibrating machine 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

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibrator holding device used for a portable telephone, a pager, or the like, and for holding a vibrator for notifying a user of an incoming call to the portable telephone, a pager, or the like by means of vibration. Particularly, the weight and thickness of the body are reduced and the weight is reduced, and the vibration generating means can be held and supplied with power only by assembling with a simple configuration.

[0002]

2. Description of the Related Art A conventional vibrator holding device used in a portable telephone is configured as shown in FIG. FIG.
FIG. 2 is a cross-sectional view of a conventional vibrator holding device used for a mobile phone. In FIG. 5, a vibration motor 80 has protruding metal terminals 81 and 82, is housed in a motor cushion 83, and is held by a holding portion 84.

[0003] Metal terminals 81 and 82 are inserted into through holes 86 and 87 provided in a flexible printed circuit board 85.
Solder 9 on lands 88 and 89 formed around 6 and 87 respectively
0 and 91 are connected. These configurations are disclosed in Japanese Patent Application Laid-Open No. 10-126070 already filed by the present inventor.

[0004]

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 are further inserted.
81, 82 and lands 88, 89 were connected by solder 90, 01, but metal terminals were used to reduce the size and weight of the equipment.
81 and 82 are formed very small, and the through holes 86 and 87 through which the small metal terminals 81 and 82 are inserted are also minute, so that it is difficult for the operator to manually insert the terminals. .

[0005] Further, the soldering operation after the insertion operation is as follows.
This is a work that calls attention to the operator, such as maintaining the state in which the metal terminals 81, 82 protrude from the through holes 86, 87, that is, maintaining the insertion completed state. Was.

Further, since the vibration motor 80 has no restriction on the rotation direction of the main body, the end surface of the flexible printed circuit board 85 contacts the upper surface of the holding portion 84 depending on how the vibration motor 80 is mounted, and The vibration generated by the motor 80 is transmitted to the holding section 84 via the flexible printed circuit board 85, which causes irregular noise.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the thickness of an airframe without complicating the shape of components such as an elastic holding member and a holding member. It is an object of the present invention to provide a vibrator holding device that achieves a configuration capable of holding a vibration generating unit by simply assembling with a simple configuration and realizing a configuration capable of supplying power to the vibration generating unit.

[0008]

According to a first aspect of the present invention, there is provided a vibrator holding apparatus according to the present invention.
A vibration generating means having a metal terminal protruding to the outside from the main body portion and being driven by applying a voltage to the metal terminal to generate vibration, and a part between the main body portion and the metal terminal; And an elastic holding member having elasticity for accommodating the main body portion, a holding member for holding the elastic holding member, and being sandwiched between the metal terminal and the holding member, A flexible substrate having a power supply portion formed at a position facing the metal terminal, wherein the metal terminal is brought into contact with the power supply portion.

Therefore, according to the first aspect of the present invention, the thickness of the body provided with the motor can be reduced because the vibration generating means can be held by a simple assembly.

According to a second aspect of the present invention, in the vibrator holding apparatus according to the first aspect, the elastic force of the elastic holding member is applied to the metal terminal to make contact with the power supply section. It was made.

Therefore, according to the second aspect of the present invention, it is possible to secure a necessary contact pressure without increasing the thickness of the metal terminal.

According to a third aspect of the present invention, there is provided the vibrator holding apparatus according to the first aspect, wherein one or both of the vibration generating means and the holding member is provided with a rotation of the main body of the vibration generating means. A rotation restricting means for restricting the moving direction is provided.

Therefore, according to the third aspect of the present invention, since the vibration generating means is always mounted at the same position with respect to the holding member, the contact portion is securely connected, and the other parts and members come into contact with each other. It is possible to prevent the occurrence of a situation such as causing irregular sounds.

According to a fourth aspect of the present invention, there is provided a vibrator holding apparatus according to the first aspect, wherein the holding member is provided with a hooking claw and the elastic holding member is provided with an engaging groove. When the elastic holding member is pressed into the holding member, the elastic holding member and the elastic holding member are engaged with each other.

Therefore, according to the fourth aspect of the present invention, when the elastic holding member is pressed into the holding member, the two are engaged with each other.
It is possible to prevent the fall without increasing the number of parts.

A wireless device according to a fifth aspect of the present invention includes the vibrator holding device according to any one of the first to fourth aspects.

Therefore, the invention according to claim 5 is provided with the vibrator holding device according to any one of claims 1 to 4, so that the radio having the effects of claims 1 to 4 is provided. Equipment can be provided.

[0018]

According to the vibrator holding device according to the first aspect of the present invention, the vibrator holding device has a metal terminal projecting from the main body to the outside, and is driven by applying a voltage to the metal terminal. A vibration generating means for generating vibration, an elastic holding member partially provided between the main body and the metal terminal and having elasticity for accommodating the main body, and holding the elastic holding member Holding member, and a flexible substrate sandwiched between the metal terminal and the holding member and having a power supply portion formed at a position facing the metal terminal, the metal terminal The power supply unit is brought into contact with the power supply unit.

According to the vibrator holding device of the second aspect of the present invention, in the configuration of the first aspect, the elastic force of the elastic holding member is applied to the metal terminal so as to contact the power supply portion. It was done.

According to a third aspect of the present invention, there is provided the vibrator holding apparatus according to the first aspect, wherein one or both of the vibration generating means and the holding member has a rotation direction of a main body of the vibration generating means. Is provided with rotation restricting means for restricting the rotation.

According to a fourth aspect of the present invention, in the vibrator holding apparatus according to the first aspect, a hook is provided on the holding member and an engagement groove is provided on the elastic holding member. When the elastic holding member is pressed into the holding member, the two are engaged with each other.

As described above, power can be supplied to the vibration generating means by a simple assembling method regardless of where the holding portion is provided, so that the size of the body provided with the motor can be reduced by reducing the thickness thereof. This has the effect that the vibration generating means can be held by simple assembly.

In addition, since it is not necessary to increase the contact pressure by increasing the thickness of the metal terminals, it is possible to reduce the weight of the vibrator holding device.

Further, since the vibration generating means is always mounted at the same position with respect to the holding member, the contact portion is securely connected, and the flexible printed circuit board comes into contact with the holding member, for example, due to a variation in the mounting method, thereby generating irregular noise. This has the effect of preventing the occurrence of unexpected situations such as inviting.

Further, since the two members are engaged when the elastic holding member is press-fitted into the holding member, the elastic holding member has an effect of preventing falling without increasing the number of parts.

According to a fifth aspect of the present invention, there is provided a wireless device comprising the vibrator holding device according to any one of the first to fourth aspects.
In addition, the function of the invention of claim 4 can be realized in a wireless device.

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 equipped 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. 4 is a longitudinal sectional view at the time of assembly.

In FIG. 1 to FIG. 4, a cylindrical DC coreless motor is used as the motor 1 for generating vibration.
Although not particularly shown, due to its configuration, the rotating shaft, a bearing that supports the rotating shaft, a cup-shaped coil or commutator provided integrally with the rotating shaft, a permanent magnet provided inside the cup-shaped coil, a commutator Consists of a pair of brushes that supply current to the
These are housed in a metal motor case, and the main body 3 is constituted by the resin bracket 2 on the bottom surface.

The brush is provided with metal terminals 4 and 5 integrally joined by spot welding, and when the resin bracket 2 having the arc portion 6, the flat portion 7 and the outer periphery formed thereon is assembled to the motor case, The flat portion 7 slightly protrudes 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 tip of the main body.

Further, fine contact projections 8 and 9 are formed on the tip end by drawing on the side opposite to the main body section 3 in a convex shape, and are set at a predetermined height from the flat section 7. The material of the metal terminals 4 and 5 is a clad material in which both phosphor bronze for spring and gold are metallurgically bonded, and only the contact projections 8 and 9 are made of gold.

A semi-cylindrical weight is attached to the end of the rotating shaft of the motor 1.
10 is fixed by caulking. This weight 10 has a specific gravity
A copper-tungsten alloy or a tungsten alloy made of 12 g / cc or more is used.

The flexible printed circuit board 11, which is a flexible board, has a conductor circuit portion formed on one or both sides of a polyimide base film by copper foil or copper plating, and has an insulating coating cover made of a material such as polyimide or polyester on its surface. It is formed and the conductor circuit part is protected.

This flexible printed board 11 has a contact piece 16 comprising two round holes 12 and 13 and lands 14 and 15 formed on one surface, and a conductor exposed portion 17 formed on the other surface. It consists of a tongue piece 18. Lands 14, 15 and exposed conductor 17
Both apply nickel plating on the conductor circuit portion and further gold plating thereon to prevent oxidation of the conductor circuit portion where the insulating cover is not formed.

An epoxy board 19 containing glass is adhered or adhered on one side other than the contact piece to prevent the attachment surface from bending. That is, a portion that is not attached can bend.

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 substantially equivalent to the outer shape of the motor 1.
A slit (gap) 27 divided between the inner surface 24, the upper surface 25, and the bottom surface 26 is continuously formed on the lower surface 25 and the lower surface 26.
At a substantially center of a lower surface 28 opposite to the surface 25, a projecting portion 29 having a substantially triangular cross section is provided upright in a direction orthogonal to the slit 27.
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.

A key sheet 34 on which characters and symbols are printed on a printed circuit board 33, a receiver 35 for outputting sound, characters,
A liquid crystal display 36 for displaying symbols and numerals is 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 including a low-noise amplifier and a first mixer is formed, and a temperature-compensated crystal oscillator that stably controls the frequency and a plurality of A wireless circuit section 38 is formed by surface mounting resistors and the like.

Here, the height of the receiving circuit section 37 and the radio circuit section 38 is lower in the receiving circuit section 37. The receiving circuit section 37 and the wireless circuit section 38 are covered with a resin-made shield case 40 for preventing intrusion and leakage of electromagnetic waves from outside.

The parts not covered by the shield case 40 include:
When the connector 41 holding the spring is surface-mounted and the above-described conductor exposed portion 17 of the flexible printed circuit board 11 is disposed above the connector 41, the held spring becomes 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.

The shield case 40 is formed of a resin material such as acrylonitrile, butadiene and styrene, and its surface is coated with electroless copper to prevent the passage of electromagnetic waves. And a rust-proof treatment of electroless copper plating is performed.

The shield case 40 that covers the receiving circuit section 37 and the radio circuit section 38 has an uneven surface, such as a concave shape when covering a low-height component or component group compared to a portion that covers a high component or component group. In this embodiment, the receiving circuit portion 37 is lower than the wireless circuit portion 38, so that the concave portion of the shield case 40 covers the receiving circuit portion 37 and the convex portion covers the wireless circuit portion 38. Has become.

A motor holding portion 42 to which the above-described motor 1 is mounted is formed on a part of the concave portion on the front side of the shield case 40. The motor holding portion 42 is formed in a substantially rectangular frame shape, and includes the right and left sides 43 and 44 of the long side and the front and rear sides 4 of the short side.
It consists of 5, 46.

The right and left side surfaces 43 and 44 are divided substantially at the center thereof, and the front side surface 45 has a U-shape to avoid contact with the rotating shaft when the motor 1 is mounted on the motor holding portion 42. A notch 47 is provided in a shape, and a flat portion 48 erected from the base and having a flat upper surface is integrally formed on the rear side surface 46.

Here, the motor 1 has the flat portion 7 and the flat portion 48 of the shield case 40 coincide with each other to be pressed and held in the motor holding portion 42. Therefore, the length (width) of the motor cushion 23 in the short direction is right, The distance between the left and right sides 43, 44 is larger than the distance between the front and rear sides 45, 46. The distance between the front side 45 and the bottom side 26 of the motor cushion 23 is
To be pressed against.

Two bosses 49 and 50 are erected near the right and left sides, and the pitch between the bosses 49 and 50 is
At the same pitch as the two round holes 12, 13, the diameter of the bosses 49, 50 is somewhat smaller than the diameter of the round holes 12, 13.

Although the motor cushion 23 contained in the motor 1 is press-fitted into the motor holding portion 42, for example, when the motor 1 is reversed after press-fitting, the motor 1 is moved from the motor holding portion 42 depending on the dimensions of the motor cushion 23 and the motor holding portion 42. May fall down.

At this time, if the dimensional tolerance is strictly managed, the cost is increased.
52, and the motor cushion 23
42 is provided with an engaging groove 53 which engages with the hook 52 at the time of press fitting,
Structural considerations, such as engaging the two, prevent falling without increasing the number of parts.

On the back surface of the shield case 40, a rib 54 for dividing the circuit portion or surrounding the circuit portion is provided upright. Further, a plurality of claws 55 for hooking on the printed board are provided on the outer periphery.

The resin cover 58 and the resin case 59 are
Motor 1, flexible printed circuit board 11, printed circuit board
33, a housing for accommodating the shield case 40 and the like. The protrusions of the key sheet 34 are inserted into the resin cover 58, the same number of key holes 60 as the protrusions of the key sheet 34, the sound holes 61 for guiding the sound generated by the receiver 35 to the outside, the size of the liquid crystal display 36 An opening 62 and the like are provided. Transparent window 63 in opening 62
The lid is made.

On the other hand, the inner surface of the resin case 59 intersects with the slit 27 formed in the upper surface 25 of the motor cushion 23 housed in the holding portion 42 of the shield case 40 and is housed in the housing. Two pressing portions 64 for pressing the upper surface 25 of the motor cushion 23 by a predetermined amount are provided in parallel, and the right and left side surfaces 43 and 44 of the motor holding portion 42 and the height of the motor cushion 23 are equal or right. The left side surfaces 43 and 44 are slightly lowered to prevent the slit 27 from expanding when pressed against the motor cushion 23. On the outer surface of the case 59, a mounting portion 66 to which a battery 65 for supplying power is mounted is formed.

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 the plurality of claws 55 on the end surface of the printed circuit board 33 while covering a part of one surface (back surface) of the printed circuit board 33.

Next, the motor holding portion 42 of the shield case 40
The flexible printed board 11 is housed in the shield case 40 so that the contact piece 16 of the flexible printed board 11 is accommodated therein, and the conductor exposed portion 17 of the tongue piece 18 is disposed on the connector 41 on the printed board 33. Place on top.

Here, the two bosses 4 of the shield case 40
9, 50 and flexible printed circuit boards 1 corresponding to these
By fitting the two round holes 12 and 13 into one, the flexible printed board 11 is placed in a fixed position with respect to the shield case 40.

The motor 1 has a flat portion 7 of the resin placket 2
Is fitted into the notch hole 30 of the motor cushion 23, the metal terminals 4, 5 are further protruded outward from the lower surface 28 of the motor cushion 23, and the main body 2 widens the slit 27 of the motor cushion 23 and passes the motor. The main body 3 can be accommodated in the cushion 23. That is, the main body 3 is covered while the lower surface of the motor cushion 23 is interposed between the metal terminals 4 and 5 and the main body 3.

Next, when the motor cushion 23 containing the motor 1 is pressed 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 aligned with each other. The rotation direction of the main body 3 is restricted, and the contact projections 8 and 9 of the metal terminals 4 and 5 are bent and abutted by the same amount as the lands 14 and 15 formed on the corresponding contact piece 16 respectively. You. Therefore, the contact force at this time is the same for both terminals.

At this time, the reaction force of the contact force acts on the motor cushion 23 in which the motor 1 is enclosed, and when the motor cushion 23 is reversed, the motor cushion 23 may fall off due to its own weight. Therefore, the engaging claw 52 is engaged with the engaging groove 53 so as to be stably held.
Also serves as positioning in the rotation direction.

As described above, since the rotation direction of the motor cushion 23 and the motor 1 is restricted with respect to the holding portion 42, the protrusion 29
The distance between the metal terminals 4 and 5 is also maintained at a predetermined amount, so that the elastic force described below acts on the two metal terminals 4 and 5 equally.

The shield case 40, the printed circuit board 33 on which the motor 1 is mounted, the key sheet 34, the receiver 35,
The liquid crystal display 36 is housed in a housing composed of a cover 58 and a case 59, a transparent window 63 is provided in an opening 62, and finally a battery 65 is mounted.
When attached to 66, a portable wireless device is completed.

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 is a high component group. The portion that covers the radio circuit section 38 has a convex and concave shape, such as a convex portion. If the holding portion 42 for holding the motor 1 is provided in the concave portion, the thickness of the housing can be made smaller than in the case where the holding portion 42 is provided in the convex portion by the step between the concave portion and the convex portion.

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 disposed on the convex portion is slightly bent near the boundary between the convex portion and the concave portion, the lands 14 and 15 are directed toward the motor 1 and the contact piece 16 is connected to the metal terminals 4 and 5 and the shield case. It is sandwiched between 40 and.

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 prevented from deforming. The projections for the contact points 8 of the metal terminals 4 and 5, 9 is brought into contact with the lands 14 and 15 at a predetermined contact pressure.

That is, the reaction force due to the bending of the metal terminals 4 and 5 is determined by the section modulus, the longitudinal elastic coefficient of the material, the length of the beam, and the like. In order to achieve this, the plate is formed of a very thin material having a thickness of 0.05 mm, and a predetermined bending at this time is small with respect to an appropriate contact force. Therefore, a repulsive force due to the projecting portion 29 being bent by a predetermined amount is added to secure a predetermined contact force of the contact projections 8 and 9 against the lands 14 and 15.

When there is no shield case on the back side of the lands 14 and 15 of the flexible printed board 11, an inflexible member such as a glass-filled epoxy resin board is provided on the back side of the flexible printed board 11 by adhesion or adhesion. It does not matter. At this time, naturally, the inflexible member is not provided at a portion where the bent portion is formed.

When the portable radio device receives a call, the user can be notified of the call by sound or light.
Further, silence can be notified by vibration. In this case, when an incoming call is received, a voltage is applied to the metal terminals 4 and 5 from the printed board 11 via the connector 41, the conductor exposed portion 17, and the lands 14 and 15, and the rotating shaft provided with the weight 10 rotates.

At this time, assuming that the mass of the weight 10 is m, the radius of the center of gravity is r, and the angular velocity of the rotating shaft is ω, the centrifugal force F is calculated in the radial direction of the rotating shaft by the product of m, r, and the square of ω. Is generated, and the housing is vibrated when centrifugal force is generated. For example, when an incoming call is generated by being generated in a pocket of a user's clothes, the vibration of the housing is sensed and the incoming call can be detected by the vibration.

[0065]

As described above, in the present invention,
A motor having a metal terminal protruding outside from the main body is held by a motor cushion, and the metal terminal is disposed outside the motor cushion, and a power supply unit is provided between the metal terminal and the motor holding unit. Since the formed flexible printed circuit board is provided and the metal terminal is brought into contact with the power supply section, the motor can be provided in a portion of the shield case that covers a low component or a group of components, and the thickness of the housing is reduced. Thickening by the motor can be avoided.

Further, the motor can be electrically connected only by being pressed and held in the holding portion, and the assemblability can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a portable wireless telephone including 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,

FIG. 3 is a cross-sectional view at the time of assembly;

FIG. 4 is a longitudinal sectional view at the time of assembly;

FIG. 5 is a sectional view of a conventional vibrator holding device used for a mobile phone.

[Explanation of symbols]

 1, 80 Motor 2 Resin bracket 3 Motor body 4, 5, 81, 82 Metal terminal 6 Circular part 7 Flat part 8, 9 Contact projection 10 Weight 11, 85 Flexible printed circuit board 12, 13 Round hole 14, 15 Land 16 Contact piece part 17 Conductor exposed part 18 Tongue piece part 19 Epoxy board with glass 23 Motor cushion 24 Inner surface 25 Upper surface 26 Bottom 27 Slit 28 Lower surface 29 Projection 30 Notch hole 33 Printed circuit board 34 Key sheet 35 Receiver 36 Liquid crystal display 37 Reception Circuit part 38 Radio circuit part 40 Shield case 41 Connector 42, 84 Motor holding part 43 Right side 44 Left side 45 Front side 46 Rear side 48 Flat part 49, 50 Boss 52, 55 Hook claw 53 Engagement groove 54 Rib 58 Cover 59 Case 60 Keyhole 61 Sound hole 62 Opening 63 Transparent window 64 Pressing part 65 Battery 66 Mounting part 86, 87 Through hole 90, 91 Solder

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5E348 AA07 AA12 AA29 AA30 AA31 5K023 AA07 BB03 HH04 HH05 LL01 NN07 RR08 5K027 AA11 BB14 FF03 FF21 5K067 AA41 BB04 BB22 EE02 FF28 KK17

Claims (5)

[Claims] 1. A vibration generating means having a metal terminal protruding outside from a main body part and generating vibration by being driven by applying a voltage to the metal terminal; and the main body part and the metal terminal. An elastic holding member partially provided and having elasticity to accommodate the main body, a holding member for holding the elastic holding member, and a metal terminal and the holding member. A flexible substrate having a power supply portion formed therebetween at a position facing the metal terminal, wherein the metal terminal is in contact with the power supply portion. . 2. The vibrator holding device according to claim 1, wherein the elastic force of the elastic holding member is applied to the metal terminal to make contact with the power supply portion. 3. The vibration according to claim 1, wherein one or both of said vibration generating means and said holding member is provided with a rotation restricting means for restricting a rotation direction of a main body of said vibration generating means. Machine holding device. 4. A structure in which a hook is provided on the holding member and an engaging groove is provided on the elastic holding member, so that the elastic holding member is engaged with the holding member when the elastic holding member is pressed into the holding member. The vibrator holding device according to claim 1, wherein: 5. A wireless device comprising the vibrator holding device according to claim 1.