JP2001251069A - Vibrator holding device and wireless apparatus equipped with the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely hold a vibrator by preventing deformation of a cushion holding the vibrator in the direction where a slit is opened, in various kinds of wireless apparatuses such as a portable telephone equipped with the vibrator as a silent informing means and a vibrator holding device for holding the vibrator. SOLUTION: This vibrator holding device is equipped with a vibration generating means 1 for generating vibration, a first elastic holding member 25 which has a slit 28 and holds the vibration generating means 1, and a second holding member 52 which stores and holds the first member 25. The slit 28 is formed in a part of the first holding member 25 which part corresponds to an opposite side of the storing direction to the second holding member 52.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a portable telephone or a pager (registered trademark) or the like, and holds a vibrator for notifying a user of an incoming call to a portable telephone or a pager by vibration. Related to the device.

[0002]

2. Description of the Related Art Conventionally, in a vibrator holding device used for a mobile phone, a flexible printed circuit board is provided inside a housing of the mobile phone, and a vibration motor is mounted on the flexible printed circuit board via a sheet metal bracket. The lead wire of the vibration motor is connected to a flexible printed circuit board.

In the vibrator holding device, the use of a flexible printed circuit board makes it possible to reduce the size and weight of the device, while the vibration of the vibration motor causes the flexible printed circuit board to vibrate. Therefore, as a countermeasure, a reinforcing plate (backing material) made of glass-containing epoxy resin is adhered to the back surface of the flexible pudding substrate, and the reinforcing plate is further attached to the mobile phone housing with a double-sided tape.

As another conventional vibrator holding device,
Japanese Patent Application Laid-Open No. 8-51286 discloses a mechanism for holding a vibrating motor used in an individual paging receiver. The outline will be described below with reference to FIGS. In FIG. 6, reference numeral 72 denotes a vibration motor, and reference numeral 74 denotes a holder for the motor. The motor 72 has a cylindrical motor case as a whole, and lead wires 70 and 71 are taken out from one end thereof. The holding member 74 is made of a material such as rubber, and has a holding portion 75 for elastically holding the outer periphery of the motor 72. The holding portion 75 is provided with a slit 73 extending in the axial direction.
Is press-fitted and elastically held. The holding member 74 is also provided with a locking portion 76, which is engaged with a locking hole 78 of the printed circuit board 77 by press fitting. As shown in FIG. 7, the printed circuit board 77 is provided on the printed circuit board holding ribs 8 provided on the cases 79 and 80.
When it is held and positioned by 1, 82, 83, 84, the holder 74 holding the motor 72 is moved to upper and lower surfaces 85, 8
6 is fixed between the inner surfaces 87 and 88 of the cases 79 and 80.

[0005]

However, the conventional vibrator holding device has the following problems. First
In addition, as in the former conventional example, using a flexible printed circuit board to reduce the size and weight of the device, mounting a sheet metal bracket on the flexible printed circuit board, and holding the motor on this, together with the vibration of the motor, In order to prevent the flexible printed circuit board from vibrating, the flexible printed circuit board must be provided with a double-sided tape and adhered to other components. Since a release paper is provided on the surface of the adhesive layer of the double-sided tape to prevent dirt and dust from adhering and reducing the adhesive strength, attach a sheet metal bracket to the flexible printed circuit board when assembling the device. In addition to attaching the motor to this sheet metal bracket, it is necessary to peel off the release paper on one side of the double-sided tape and stick it on the flexible printed circuit board, peel off the release paper on the back side, adhere it to another part, and join them together There is
It is difficult to automate the operation of peeling the release paper, which hinders assembly by a robot.

Second, in the case of the latter conventional example, vibration is generated when the motor rotates, but this type of motor generates vibration due to radial force acting on the rotating shaft of the motor. I do. However, since only the upper and lower surfaces of the motor holder are sandwiched by the case, even if a force is applied in the radial direction and in the second radial direction perpendicular to the upper and lower surfaces, the surface receiving the force, that is, the holder There is no contact surface with the case, and no vibration is transmitted even when a force acts in the second radial direction. As a result, the housing vibrated in only one direction, and the amount of vibration was very small to notify the user of an incoming call by vibration. For this reason, conventionally, in order to increase the amount of vibration, the motor was rotated at a high speed, or the weight was increased in size in order to make the center of gravity far away. In addition, since the holder is provided with a slit so that the motor can be easily inserted, when a force is applied in the second radial direction described above, a force acts in a direction in which the slit of the holder is widened, and the motor is mounted on the holder. There was a slight movement in the room and sometimes it came off.

[0007] Third, this type of personal pager is often used as a portable device, and is often erroneously dropped by a user, and sometimes a built-in component breaks down. . In such a case, it is necessary to remove the holder from the printed circuit board in order to replace parts. However, since the retaining portion of the retainer is engaged by press-fitting the retaining portion of the retaining device into the retaining hole of the printed circuit board, it is necessary to work carefully so that the retainer does not crack when it is removed. The work time is lengthened.

Fourth, conventionally, lead wires have been used as motor terminals. However, since the shape of the lead wire is indefinite, it is extremely difficult to hold the lead wire with a robot. It must be held by hand and the end of the lead wire connected to the printed circuit board by soldering. Therefore, in order to hold the lead wire by hand, an appropriate length is required for the lead wire. However, in the case where the two cases are to be fitted in the upper and lower cases, if the lead wire is too long, the lead wire will be caught between the cases. A new means for fixing the device had to be provided.

Fifth, when a coreless motor or a cored motor is used as a vibrating motor in various wireless devices such as an individual call receiver for transmitting and receiving electromagnetic waves and a mobile phone, a conductive part such as a coil or a brush and a motor rotating shaft are used. Since the motor case absorbs electromagnetic waves and is not electrically connected to the metal cylindrical motor case that houses the bearings that support the rotating shaft and the like, the potential of the motor case increases when the motor case receives the electromagnetic waves. And the leakage current is transmitted to the lead wire to change the potential of the lead wire. Further, when this is transmitted to, for example, a VCO mounted on a printed circuit board, frequency modulation accuracy is reduced, and stable transmission and reception cannot be performed.

The present invention has been made to solve the above problems. First, even if a vibration motor is connected to a flexible printed circuit board, transmission of vibration to other parts other than the connection part is prevented, and To prevent the occurrence of abnormal noise due to damage or interference between the flexible printed circuit board and other components;
Secondly, the vibration motor is securely held in the holding member, and the generated vibration force is sufficiently transmitted to the housing to steadily notify the user of the incoming call. Down, third, improvement of maintainability such as easy replacement of built-in components, and fourth, regulation of flexible printed circuit boards without increasing the number of components, and automation of assembly. Facilitation, fifth
Another object of the present invention is to perform stable transmission and reception without causing charging or a change in potential of a vibration motor.

[0011]

In order to achieve the above object, in a vibrator holding apparatus according to the present invention, a flexible printed circuit board is provided with vibration transmission preventing means for preventing transmission of vibration generated by vibration generating means. I have.

In the vibrator holding device of the present invention,
A holding member having a slit and holding the vibration generating means, and a pressing means for pressing the holding member are provided, and the pressing means is provided so as to intersect with the slit of the holding member.

In the vibrator holding device of the present invention,
The holding member includes a first elastic member that elastically encloses the vibration generating means, and a second holding member that holds the first elastic member that encloses the vibration generating means, wherein the first elastic holding member is a second holding member. The first elastic member is provided with a protruding portion that protrudes from the second holding member in a state where is held.

In the vibrator holding device of the present invention,
A part of the flexible printed circuit board is provided with a detachable engagement hole, while another part is provided with an engaging projection, and the flexible printed circuit board is restricted to a predetermined position by the engagement of the two.

In the vibrator holding apparatus of the present invention,
The holding member of the vibration generating means includes an elastic enclosing member that encloses the vibration generating means, and a conductive holding member that holds the elastic enclosing member that encloses the vibration generating means, and that is subjected to plating or conductive coating. By holding the elastic enclosing member on the holding member, the vibration generating means and the holding member are brought into contact with each other.

As described above, in the vibrator holding device, even if the vibration motor is connected to the flexible printed circuit board, the transmission of the vibration to other parts other than the connection portion is prevented, and the damage of the mounted parts and the flexible printed circuit board and other parts are prevented. Preventing the generation of abnormal noise due to interference with parts, securely holding the vibration motor in the holding member, sufficiently transmitting the generated vibration force to the housing, and steadily informing the user of the incoming call, At the same time, low power consumption and cost reduction, improvement of maintenance such as easy replacement of built-in components, and regulation of flexible printed circuit boards without increasing the number of components, It facilitates automation and realizes stable transmission and reception without causing charging or potential change in the vibration motor.

[0017]

According to a first aspect of the present invention, there is provided a vibrator holding apparatus, comprising: a vibration generating means for generating vibration; a first elastic holding member having a slit formed therein for holding the vibration generating means; (1) a second holding member for housing and holding the elastic holding member, wherein a slit is formed in a portion corresponding to a side opposite to the housing direction of the first elastic holding member with respect to the second holding member.

According to a second aspect of the present invention, there is provided a vibrator holding device.
A vibration generating means for generating vibration and a slit are formed,
A first elastic holding member for holding the vibration generating means, a second holding member for housing and holding the first elastic holding member, and a pressing means for pressing a slit of the first elastic holding member; A slit is formed in a portion of the elastic holding member corresponding to a side opposite to the accommodation direction with respect to the second holding member, and the pressing means is provided so as to intersect with the slit of the first elastic holding member.

The third aspect of the present invention is the first or second aspect.
In the vibrator holding device described above, the slit is a slit for expanding and passing the vibration generating means so as to be accommodated in the first elastic holding member.

According to a fourth aspect of the present invention, in the vibrator holding apparatus according to any one of the first to third aspects, a case accommodating the vibration generating means is grounded.

According to a fifth aspect of the present invention, there is provided a wireless device including the vibrator holding device according to any one of the first to fourth aspects.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 shows the configuration of a first embodiment of the present invention. Here, a portable wireless device provided with the vibrator holding device is exemplified. In FIG. 1, 1
Denotes a motor, and here, a cylindrical DC coreless motor is used. 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 And a pair of brushes for supplying current to the motor, and these are housed in a metal motor case.

In this motor 1, the brush is provided with metal terminals (sheet metal terminals) 2, 3 which are inserted from the outside of the motor case and are integrally joined by spot welding. The two metal terminals 2 and 3 have stepped portions 4 and 5 respectively, and the pitch Q between the roots is set to be smaller than the pitch P between the tips. Conversely, the pitch Q between the roots may be set wider and larger than the pitch P between the tips. Further, both pitches P and Q may be the same. In this case, the cross-sectional shape of the terminal is partially changed by providing a projection in the plate thickness direction or the plate width direction between the tip and the base. deep.

A semi-cylindrical weight 6 is fixed to one end of the rotating shaft of the motor 1 by caulking. As the weight 6, a weight made of a copper-tungsten alloy or a tungsten alloy having a specific gravity of 12 g / cc or more is used.

In FIG. 1, reference numeral 10 denotes a flexible printed circuit board. Conductive circuit portions are formed on both sides of a polyimide base film by copper foil or copper plating, and an insulating coating cover made of a material such as polyimide or polyester is formed on the surface. Thus, the conductor circuit portion is protected. The flexible printed circuit board 10 includes a motor coupling piece 11, a tongue piece 12, and a mounting part 13. Here, the motor coupling piece portion 11 is formed narrower and thinner than the mounting portion 13. More specifically, the configuration of the motor coupling piece 11 or its bent portion is such that the conductor circuit portion and the insulating coating cover are formed only on one surface of the base film, and the conductor circuit portion is not formed on the opposite surface. By making it thinner and narrower, it is softer and easier to bend than other parts,
The bending angle is easily changed. Further, through holes 14 and 15 larger than the cross-section of the metal terminals 2 and 3 are provided at the tip side.
(Pitch R) are provided, and lands 16 and 17 are formed around the through holes 14 and 15 with the conductor circuit portion exposed on only one surface of the flexible printed circuit board 10. Here, the pitch P between the tips of the metal terminals 2 and 3 and the through hole 14
When the pitch R of the metal terminals 2 and 3 is different from the pitch Q between the roots of the metal terminals 2 and 3, when the metal terminals 2 and 3 are inserted into the through holes 14 and 15, only the pitch P between the tips can be inserted. It has become.

Tongue piece 1 of flexible printed circuit board 10
2 is raised upward by the first bent portion 20,
An exposed conductor 18 is formed on the tip side. Also,
In the vicinity of the first bent portion 20, a shield case 40 described later is provided.
Is provided with an engagement hole 21 that engages with the projection 41 provided on the front side.

Incidentally, the surfaces of both of them are plated with solder or tin as a rust preventive treatment.

Mounting part 1 of flexible printed circuit board 10
On the three surfaces, a plurality of resistors and diodes 19 constituting an electric circuit are mounted.

1 and 3, reference numeral 25 denotes a motor cushion, which is made of an elastic material such as silicon rubber or urethane rubber, has an inner surface 26 substantially equal to the outer diameter of the motor 1, and an upper surface 27 has an inner surface 26. A slit (gap) 28 is formed between the motor cushion 25 and the upper surface 27 so that the motor 1 can be accommodated in the motor cushion 25 by widening and passing the slit 28 of the motor cushion 25. Projections 29 and 30 are provided on the upper surface 27 on both sides of the slit 28, respectively. The shapes of these protruding portions 29 and 30 are respectively vertical portions 31 and 32 provided upward from the upper surface 27 and horizontal portions provided substantially perpendicular to the ends thereof in the direction away from each other. It has parts 33 and 34 and is formed integrally with the motor cushion 25. The purpose of the slit 28 is to facilitate the insertion of the motor 1 into the motor cushion 25, and may be a partial slit on the upper surface 27.

Reference numeral 35 denotes a printed circuit board, on which a key sheet 36a on which characters and symbols are printed, a receiver 36b for outputting voice, a liquid crystal display 36c for displaying characters, symbols and numbers, and the like are mounted. Further, a connector 39 for inserting the exposed conductor portion 18 of the flexible printed circuit board 10 for electrical connection is soldered. On the back side, a transmitter (hereinafter, referred to as a VCO) for controlling a transmission frequency with a voltage is mounted, and a receiving circuit unit 37 including a low noise amplifier and a first mixer is formed, and a temperature-compensated crystal for stably controlling the frequency is provided. A radio circuit unit 38 is formed by surface-mounting a transmitter (hereinafter, referred to as TCXO) and the like. A shield case 40 made of resin for preventing electromagnetic waves from entering from outside is mounted on the back surface of the printed board 35. Electroless copper plating is applied to the shield case 40 to prevent the passage of electromagnetic waves, and the surface of the shield case 40 is applied with electroless nickel plating to perform a rustproof treatment of the electroless copper plating. On the side surface of the shield case 40, a projection 41 that can be engaged with the engagement hole 21 provided in the tongue piece 12 of the flexible printed circuit board 10 is provided upright. FIG. 2 shows the structure of the engagement hole 21 and the projection 41.

As shown in FIG. 2A, the engagement hole 21
It is cut out in a shape surrounded by a part of an arc of diameters a and b (a <b) and two straight lines passing through the center of the circle, and a protruding piece from the circumference of diameter b to the circumference of diameter a. Parts 22, 23 are projected. On the other hand, as shown in FIG. 2B, the protrusion 41 is formed such that the tip diameter c is larger than the root diameter d.

Reference numeral 50 denotes a resin case, and reference numeral 51 denotes a resin cover, which constitutes a housing for housing the motor 1, the flexible printed board 10, the motor cushion 25, and the printed board 35. A rectangular frame 52 that accommodates and holds the motor cushion 25 is provided upright on the case 50.
Further, a plurality of locking claws 53 for holding the flexible printed circuit board 10 and ribs 54 for regulating the height thereof are formed. The dimensional relationship between the rectangular frame 52 and the motor cushion 25 is such that the motor cushion 25 containing the motor 1 is pressed into the rectangular frame 52 and held therein. The dimensions are set large. Similarly, it is preferable to provide an appropriate amount of compression in the longitudinal direction (the thrust direction of the motor rotation shaft). In the height direction, the motor cushion 25 is set higher than the rectangular frame 52.

On the other hand, the cover 51 has the same number of holes 5 as the projections of the key sheet 36a into which the projections of the key sheet 36a are inserted.
5, a sound hole 56 for guiding sound generated from the receiver 36b to the outside, an opening 57 having a size equal to the size of the liquid crystal display 36c, and the like are provided. The opening 57 is covered by a transparent window 58. Further, on the inner surface of the cover 51, a pressing portion 59 for pressing the motor cushion 25 accommodated in the rectangular frame 52 so as to intersect with the slit 28 formed on the upper surface thereof is provided. The pressing portion 59 is formed in a mountain-like inclined shape in which both ends of the tip protrude from the center,
Slit 2 when pressing against motor cushion 25
8 has a structure for preventing the expansion of the same.

It is to be noted that the opening of the slit 28 is prevented by making the height of the motor cushion 25 equal to the height of the rectangular frame 52 or slightly increasing the height of the rectangular frame 52 instead of the inclined shape at the tip of the pressing portion 59. You may do so.

Next, the assembly of each part in the first embodiment will be described with reference to FIG. In FIG. 3, first, the through-hole 1 of the flexible printed circuit board 10 is formed.
The metal terminals 2 and 3 of the motor 1 are inserted into 4 and 15 respectively. Since the metal terminals 2 and 3 have the stepped portions 4 and 5, the flexible printed circuit board 10 has the metal terminals 2 and 3.
Only the portion of the pitch P between them is inserted. Thus, the flexible printed circuit board 10 is always restricted to the same position and the same height with respect to the motor 1.
The metal terminals 2 and 3 of the flexible printed circuit board 10
On the protruding surface side, both are joined by soldering. At this time, the through holes 14 and 15 and the metal terminals 2 and 3 have a clearance fit, and when the solder enters and passes through the clearance and joins with the motor 1, the motor 1 is short-circuited and power is supplied. However, since the flexible printed circuit board 10 has a certain height with respect to the motor 1, the solder may not adhere to the motor 1 even if it passes through the gap. Absent.

Next, the flexible printed circuit board 10 is mounted on the case 50 from above. The motor cushion 25 including the motor 1 is pressed into the rectangular frame 52 of the case 50 from the lower surface (the surface facing the slit forming surface 27), and the mounting portion 13 of the flexible printed circuit board 10 is pressed.
Is mounted on the rib 54 and the plurality of locking claws 53
To lock. When the motor cushion 25 is pressed into the rectangular frame 52, the width and the longitudinal dimension of the motor cushion 25 are larger than the rectangular frame 52, so that the right and left side surfaces of the motor cushion 25 are compressed and held, respectively. The quantities are e and f, respectively. Here, if the motor cushion 25 is to be accommodated in the rectangular frame 52 from the upper surface 27 side, the side of the motor cushion 25 and the rectangular frame 5
2 is rubbed, and the friction causes the slit 28 to open,
Since the motor 1 cannot come out of the motor cushion 25 normally and cannot be accommodated normally, it is press-fitted from the lower surface side facing the formation surface of the slit 28. Further, when the flexible printed circuit board 10 is locked by the plurality of locking claws 53, the motor coupling piece 11 of the flexible printed circuit board 10 has a sufficient flexure between the plurality of locking claws 53 and the motor 1. The motor connecting piece 1 of the flexible printed circuit board 10 is formed so that the bent portion 60 and the third bent portion 61 can be formed.
Make the length of 1 sufficiently long. When the motor cushion 25 is to be accommodated in the rectangular frame from the upper surface 27 (the surface with the slit), the side surface of the motor cushion rubs against the rectangular frame, and the friction causes the slit to expand. The pressing means is provided so as to intersect with the slit of the first elastic holding member, thereby preventing a situation in which the housing cannot be normally accommodated, such as a case in which the member comes out.

Next, the shield case 40 is assembled on the flexible printed circuit board 10. Put the tongue piece 12 first
It is bent at a substantially right angle by the bent portion 20 and its engagement hole 21 is formed.
Through the projection 41. At this time, as shown in FIG.
By setting the relationship b>c> a ≒ d between the diameters a and b of the two arcs of the engagement hole 21 and the tip diameter c and the root diameter d of the projection 41, the protruding pieces 22, 23 are bent, Each of the projecting pieces 22, 23 is restored by the passage of the tip of the projection 41. The bent tongue piece 12 attempts to return to the state before bending due to the restoring force. However, since the tips of the protruding pieces 22 and 23 are smaller than the diameter c, the tongue piece 12 is removed with the restoring force (state before bending). I can't. When the projection 41 is inserted into the engagement hole 21 in this manner, the flexible printed circuit board 10
The tongue piece 12 on which the conductor exposed portion 18 is formed
It stands still in an upright state. In addition, it does not come off unless the protruding pieces 22 and 23 are bent again in order to remove them,
Human power is sufficient to deflect this.

Next, the receiving circuit 37 equipped with the VCO
In addition, the printed circuit board 35 is assembled above the shield case 40 so that the radio circuit section 38 on which the TCXO is mounted is covered with the shield case 40, and the tongue piece 12 of the flexible printed board 10 is bent, and By inserting the exposed conductor portion 18 into the connector 39, the flexible printed circuit board 10 and the connector 39 are electrically connected.

Next, the cover 51 is mounted from above. At this time, the pressing portion 59 of the cover 51 presses the upper surface 27 of the motor cushion 25 while intersecting the slit 28, and crushes the motor cushion 25 by a predetermined amount. The crushing amounts are g and h. Thereby, the movement of the motor cushion 25 enclosing the motor 1 in the radial direction of the motor rotation shaft is restricted. Here, if the pressing is performed without intersecting with the slit 28 of the motor cushion 25, in other words, when the pressing portion 59 is pressed in parallel with the slit 28, the pressing portion 59 causes the upper surface 27 of the motor cushion 25 to open the slit 28. Therefore, a predetermined compression amount cannot be secured. Therefore, since the pressing portion 59 is provided so as to intersect with the slit 28, the deformation in the direction in which the slit 28 is opened is reduced. Further, in this embodiment, the shape of the tip of the pressing portion 59 ensures that the direction of the force by the pressing acts in the direction of the center of the motor 1 to prevent deformation in the direction in which the slit 28 is opened, and secures a predetermined compression amount.

Thus, the assembly of the housing 65 is completed.

Next, the operation when power is supplied to the motor 1 will be described with reference to FIGS. In FIG. 3, when one metal terminal 2 of the motor 1 is a positive electrode and the other metal terminal 3 is a negative electrode, the weight 6 is rotated in the direction of the arrow J by applying a voltage to both terminals 2 and 3. And
At this time, assuming that the mass of the weight is m, the distance from the center of the rotation axis to the center of gravity of the weight is r, and the rotation speed (frequency) is f, the generated centrifugal force F1 is expressed by the following equation (1). F1 = mr (2πf) ² (1) Assuming that the width direction of the housing 65 is X, the thickness direction is Y, and the longitudinal direction is Z, the force is applied in the radial direction of the motor rotation axis, that is, in the X and Y directions. And the magnitude of the force is exactly the same except that the phases differ by (π / 2). This force is transmitted from the motor 1 to the motor cushion 25, and the force acts on the entire housing 65 to vibrate and notify the user without sound.

Even if the generated force is the same, if the motor 1 fluctuates in the direction in which the force acts, the force transmitted to the housing 65 becomes weak. Since the motor 1 is enclosed by the motor cushion 25, when a centrifugal force is generated from the motor 1, the motor cushion 25 slightly further compresses in the direction in which the force acts, and the motor 1 slightly moves by the amount of compression. The motor cushion 25 is housed and held in the rectangular frame 52 in a state where all four sides, that is, the radial surfaces are crushed so as to be about 80% of the initial thickness of the motor cushion 25.
The above fluctuations are made extremely small to reduce transmission loss of force.

Further, since the motor coupling piece 11 is not locked anywhere, it prevents a force from acting on the solder of the metal terminal coupling in conjunction with the fine movement of the motor 1.
Thereby, the destruction of the solder is prevented.

Further, since the flexible printed circuit board 10 is provided with the bent portions 60 and 61 between the motor coupling piece portion 11 and a portion such as the mounting portion 13 where a problem occurs due to vibration, the motor 1 vibrates. Also bend 60,
61 is further bent so that the locked portion does not vibrate, the component is damaged, and the flexible printed circuit board 1 is not damaged.
The interference between 0 and other parts is prevented to prevent the generation of abnormal noise (uneven sound). Therefore, as in the conventional case, the vibration is transmitted from the motor coupling piece to the entire flexible printed circuit board due to the fine movement of the motor, and the vibration may damage the mounted resistor or diode, or may cause the flexible printed circuit board to be disengaged from the locking claw. Interference with other parts such as a case or a shield case is prevented to prevent generation of abnormal noise (irregular sound).

Here, the above principle will be described in detail with reference to FIG. In FIG. 4, the center O of the motor 1 is displaced by ΔX and ΔY in the initial position and the X and Y directions, respectively.
The motor center position after the displacement is O '. At this time, since the fine movement of the mounting portion 13 is suppressed by the locking claw 53, only the motor coupling piece portion 11 is interlocked and similarly displaced by ΔX and ΔY in the X and Y directions. Therefore, the distance between the mounting portion 13 of the flexible printed circuit board 10 or the locked portion thereof and the motor coupling piece portion 11 is ΔΔ.
X, and the height of the motor coupling portion of the motor coupling piece 11 increases by ΔY. FIG. 4 shows the motor coupling piece 11 ′ of the motor 1 ′ and the flexible printed circuit board 10 after the displacement.
It is shown by a two-dot chain line in the middle. Due to this displacement, the entire length of the flexible printed circuit board 10 does not change, and the second bent portion 60
Is changed to θ ′, and the bending angle φ of the third bent portion 61 is changed to φ ′, so that the locked mounting portion 13 is not affected, that is, the mounting portion 13 is not displaced. Has become. That is, since the displacement is zero and no acceleration occurs, the locked portion such as the mounting portion 13 does not vibrate and does not swing.

Further, in this embodiment, in order to easily deform the two bent portions 60 and 61 in conjunction with the fine movement of the motor 1, the motor connecting piece 11 or the bent portion 60
Only 61 has a different form and is softened as compared with other parts. That is, due to the configuration of the motor coupling piece 11 or the bent portions 60 and 61, the conductor circuit portion and the insulating coating cover are formed only on one surface of the base film, and the conductor circuit portion is not formed on the opposite surface. Is thinner and also narrower so that it is softer and easier to bend than other parts, and the bending angle is easily changed.

As described above, as the vibration transmission preventing means, first, the bent portion 60 is provided between the motor coupling piece 11 and the locking portion.
61, secondly, the motor coupling piece 11 is formed thinner than other parts, and thirdly, the motor coupling piece 11 is formed narrower than other parts. These forms can be selectively combined depending on the magnitude of the generated vibration or used alone.

In the above embodiment, a 0.2 mm-thick nickel-white plate is used as the motor terminal, but a wire such as a piano wire may be used, and the same effect can be obtained. In addition, when the motor is reflowed and connected to the flexible printed circuit board, the strength of the cream solder is generally weak, and when the vibration generator is connected with solder, stress is generated in the solder and solder cracks occur.
In some cases, the connection state became unstable, but as in the above-described embodiment, the connection portion vibrated in conjunction with the vibration of the vibration generator, thereby preventing the occurrence of solder cracks and bending. Since a portion is provided to prevent the transmission of vibration to other portions, for example, the mounting portion and the tongue piece portion, connection by reflow may be performed.

In the above embodiment, the bent portion is formed by providing an extra length between the mounting portion or the locked portion of the flexible printed circuit board and the motor coupling piece portion. Alternatively, the bent portion may be formed by changing the relative height position between the portion locked by the locking claw and the motor coupling piece portion.

Also, when a bent portion cannot be formed between the mounting portion of the flexible printed board or the portion locked by the locking claw and the motor coupling piece portion, that is, the flexible printed board is stretched between them. When they are mounted, they are reinforced with a backing material made of a material such as a glass epoxy plate or a paper phenol plate, a glass mat plate, a polyester film, a polyimide film, or a polyetherimide, and placed on different components. Alternatively, the transmission of the vibration can be prevented by engaging the locking member by different means and dividing the backing material between the two members.

The vibration generating means is not limited to a DC coreless motor, but a weight such as a cored motor in which a coil is wound around a laminated iron core is mounted, and a centrifugal force is generated by rotation to generate vibration. Any solenoid may be used as long as it is a generating means (electric motor), or a solenoid that generates and generates an inertial force due to a reciprocating weight may be used.

Next, a case where a user accidentally drops the housing 65 in the market will be described. Case 6
Due to the drop of 5, a force represented by the product of the generated acceleration and the mass of the weight acts on the motor rotation shaft, and sometimes the rotation shaft is broken and the motor needs to be replaced. As a procedure at this time, after removing the cover 51 and the printed board 35, the tongue piece 12 of the flexible printed board 10 and the connector 3
9 is released, the protrusions 29 and 30 of the motor cushion 25 projecting from the rectangular frame 52 are gripped, and the motor cushion 25 is pulled out. In this case, since the horizontal portions 33 and 34 are provided in addition to the vertical portions 31 and 32, the horizontal portions 33 and 34 serve as slip prevention at the time of pulling out, so that the gripping property is good and the motor cushion 25 can be easily pulled out. Therefore, the motor 1 can be easily replaced.

(Embodiment 2) Next, a configuration of a second embodiment of the present invention will be described with reference to FIG. In FIG. 5, reference numeral 100 denotes a motor.
02, a sintered bearing 103 supporting the rotating shaft 102, a magnet 104 mounted on the outer periphery of the sintered bearing 103, a plurality of commutators 105 and 106 bonded to one end of the rotating shaft 102 with a non-conductive adhesive, Cup-shaped coils 107 and the like, which are connected to the rotors 105 and 106 and are integrated with the rotating shaft 102 and are provided with a gap outside the magnet 104. These are housed in a metal cylindrical motor case 101. I have. Here, the cylindrical motor case 101
Is formed by a resin bracket 108. Therefore, the rotating shaft 102 and the cup-shaped coil 107 are configured to be rotatable in a cavity formed by the motor case 101 and the resin bracket 108. This resin bracket 108 is provided with a pair of brushes 110 and 111 for supplying current to the commutators 105 and 106, and metal terminals 112 and 113 are fixed to the ends thereof by spot welding. These metal terminals 112 and 113 are connected to a flexible printed circuit board 116 connected to a printed circuit board to be described later by solders 117 and 118, and the configuration is the same as the configuration described in detail in the first embodiment. An eccentric weight 114 is provided at the other end of the rotating shaft 102.
A gap is provided between the motor case 101 and the top surface 115, and the motor case 101 is mounted by caulking.

Therefore, the motor 100 is connected to the metal terminal 1
By applying a voltage to the terminals 12 and 113, the one brush 110 (or 111), the one commutator 105 (or 106), the cup-shaped coil 107, and the other rectifier from one metal terminal 112 (or 113). Current sequentially flows through the contact 106 (or 105), the other brush 111 (or 110), and the other metal terminal 113 (or 112), and the cup-shaped coil 107 disposed in the magnetic field of the magnet 104 causes the left hand of framing. The force acts according to the law of and rotates in one direction. Here, no current flows through the rotating shaft 102, the sintered bearing 103, and the motor case 101. That is, it is not electrically connected to each component through which the above-described current flows.

Reference numeral 125 denotes a motor cushion having an inner surface 126 equal to the outer diameter of the cylindrical motor case 101;
The motor cushion 12 corresponds to the length L1 of the motor 100.
5, the length of the inner surface 126 is set slightly shorter,
A part of the cylindrical peripheral surface 127 of the motor case 101 and the bottom surface 1
09 is included. The motor cushion 125 including the motor 100 is held in a rectangular frame 130.

Here, the rectangular frame 130 is provided integrally with the shield case 131 as in the first embodiment. This shield case 131 has an electroless copper plating on the surface and an electroless nickel plating
[Μm] or more, and the surface resistance value is 0.3 [Ω] or less. In addition, conductive coating or aluminum vapor deposition may be performed instead of plating, and silver or a copper-based paint coated with silver is preferable as a material for the conductive coating. A grounding leaf spring 135 made of a conductive material such as phosphor bronze, beryllium copper, nickel silver, stainless steel for spring, etc. is provided between the shield case 131 and a grounding pattern formed on the printed circuit board 134 on which the VCO 132, the TCXO 133 and the like are mounted.
Are electrically connected (conductive), and the shield case 1 is compressed by the compression of the grounding leaf spring 135.
31 and the printed circuit board 134 are both pressed and urged. The grounding leaf spring can be replaced with a wire. In this manner, the shield case 131 is provided so as to cover the components forming the wireless circuit section, such as the VCO 132 and the TCXO 133, of the printed circuit board 134, and prevents a change in frequency due to the intrusion and radiation of electromagnetic waves. That is, electronic components such as the VCO 132 and the TCXO 133 generate different high-frequency signals, each signal is radiated toward the periphery, and rides on a peripheral signal line (a signal pattern or a hot pattern formed on a printed circuit board), Disturbing each other's signals, causing malfunctions in various electronic devices, and deteriorating wireless performance due to changes in frequency are prevented by plating, conductive paint, aluminum deposition, etc. applied to the surface of the shield case 131. Electromagnetic waves are reflected or absorbed, converted into heat or current energy and attenuated.
The CO 132 and the TCXO 133 are electromagnetically shielded from the outside so that electromagnetic noise generated by these electronic components is not radiated toward other components and devices, or is not affected by external electromagnetic waves.

The pressing portion 142 is provided on the case 140 and presses the upper surface 141 of the motor cushion 125.
2. Motor cushion 125, rectangular frame 130,
From the dimensional relationship of the pressing portion 142, as in the first embodiment,
The radial surface of the motor rotation shaft 102 is crushed by a predetermined amount. Also, the motor rotating shaft 102
Of the motor 10 in a thrust direction, the motor 100 is accommodated in the motor cushion 125.
0 is slightly projected, and the total length L3 at that time is the length in the longitudinal direction of the rectangular frame 130 (the first side wall 143 forming the rectangular frame 130 and the second side wall 143 facing the first side wall 143).
(Length between the side walls 144) L2.

Next, the operation of the second embodiment will be described. Motor 10 in motor cushion 125
When the motor cushion 125 is pressed into the rectangular frame 130 with the first side wall 143 of the rectangular frame 130 positioned between the top surface 146 of the motor case 101 and the eccentric weight 114, the eccentric weight 114 is rectangular. The motor cushion 125 is crushed in the width direction and the longitudinal direction in a state where the motor cushion 125 is arranged outside the frame 130. The amount of crushing in the longitudinal direction is L
3-L2. Due to the crushing amount L3-L2, the repulsive force of the motor cushion 125 acts on the motor 100, and the motor 100 is urged toward the first side wall 143. Therefore, the top surface 146 of the motor case 101 has the first side wall 1.
The first side wall 143 is electrically connected and grounded by plating or conductive paint applied to the first side wall 143. Here, the contact direction between the top surface 146 of the motor case 101 and the first side wall 143 is a thrust direction with respect to the radial direction in which the vibration of the motor 100 occurs, and there is almost no vibration in this thrust direction. , Is always stably contacted and grounded. In this way, it is not always necessary to make contact in the thrust direction, and contact in the radial direction may be performed. In this case, abnormal noise does not occur between the motor case 101 and the shield case 131 when vibration occurs. It should just be fixed to the extent.

As described above, the metal motor case 101
Is always connected to the ground pattern of the printed circuit board 134 via the shield case 131 and the ground leaf spring 135, so that the motor case 101 is not charged or changes in potential.

[0060]

As described above, according to the present invention, first, as a means for preventing vibration transmission, a flexible printed circuit board to which a vibration motor is connected is provided between a connection portion of the vibration motor and another portion. Since the connecting part of the vibration motor is made thinner and narrower than the other parts, even if the vicinity of the motor connecting part of the flexible printed circuit board vibrates with the vibration of the motor, Vibration can be prevented, and at the same time, damage to components mounted on the flexible printed circuit board is prevented, and interference between the flexible printed circuit board and adjacent components is prevented to prevent noise. Can be.
As a result, it is not necessary to tighten the specifications such as the vibration resistance characteristics of the mounted components, and it is not necessary to newly provide components for preventing vibration of other components, thereby suppressing an increase in cost. In addition, since it is not necessary to strict the specifications of the mounted components such as the resistors, it is possible to realize a low cost in this regard.

Second, since the motor cushion is pressed by the projections intersecting the slits formed in the motor cushion that encloses the motor, the slits can be inserted into the motor cushion without changing the conventional operation method of inserting the motor. Can be prevented from opening, a stable compression amount can be always obtained, and vibration generated from the motor can be sufficiently transmitted to the housing. Conventionally, in order to increase the amount of vibration, the mass of the weight was increased or the distance to the center of gravity of the weight was increased, so the weight was increased and the motor was rotated at high speed to secure a large amount of vibration. For,
As a result, the power consumption is increased by increasing the weight and size of the housing, but the transmission amount of vibration is increased compared to the conventional case, making the housing smaller, lighter, and lower in power consumption. Electricity can be realized and cost can be reduced.

Third, since the motor cushion is provided with a protruding portion projecting from the rectangular frame accommodating the motor cushion, the motor cushion can be easily pulled out from the rectangular frame by gripping and pulling the projection. In addition, the maintenance time can be improved, for example, by shortening the time required for extracting the motor cushion and eliminating the possibility of generating a crack in the motor cushion.

Fourth, while the flexible printed circuit board is provided with an engagement hole, the flexible printed circuit board is provided with a projection, and the flexible printed circuit board is regulated by the engagement of the two. Since a double-sided tape was used to fix the flexible printed circuit board, it was difficult to peel off the release paper provided on the surface of the adhesive layer of the double-sided tape with an automatic device, increasing the number of assembly steps and reducing product costs. In contrast, the flexible printed circuit board can be regulated with a simple structure without using a double-sided tape, and problems such as being sandwiched between the case and the cover when the case and the cover are assembled can be eliminated.

Fifth, a conductive member made of a metal part of a motor includes a part through which a current flows when a voltage is applied to a terminal;
There are components that do not flow. Here, components that do not flow current try to change their potential when absorbing electromagnetic waves, but do not change their potential because they are connected to the ground pattern of the printed circuit board. Therefore, the voltage applied to the terminal is not changed by high-frequency coupling.
Without affecting the modulation accuracy of the data.

In particular, there are provided vibration generating means for generating vibration, a first elastic holding member having a slit formed therein for holding the vibration generating means, and a second holding member for accommodating and holding the first elastic holding member. The second elastic holding member
A slit is formed in a portion corresponding to a side opposite to the holding direction with respect to the holding member, a vibration generating means for generating vibration, a first elastic holding member having a slit formed and holding the vibration generating means, A second holding member that holds and holds the first elastic holding member; and a pressing unit that presses a slit of the first elastic holding member, wherein a pressing direction of the first elastic holding member with respect to the second holding member is opposite. A slit is formed in a portion corresponding to the side, and the pressing means is provided so as to intersect with the slit of the first elastic holding member,
The slit is a slit for expanding and passing the vibration generating means so as to be accommodated in the first elastic holding member. With such a configuration, since the pressing portion is provided so as to intersect with the slit, deformation in the direction in which the slit is opened is reduced. Furthermore, the shape of the tip of the pressing portion ensures that the direction of the force due to the pressing acts in the direction of the center of the motor to prevent deformation in the direction in which the slit is opened, thereby ensuring a predetermined amount of compression.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a portable wireless telephone including a vibrator holding device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of an engagement hole provided on a flexible printed circuit board and a projection provided on a shield case in the portable wireless telephone.

FIG. 3 is a cross-sectional view of the vibrator holding device in a state where the portable wireless telephone of FIG. 1 is assembled.

FIG. 4 is a partial sectional view showing the operation of a vibration transmission preventing means provided in the vibrator holding device.

FIG. 5 is a cross-sectional view of a main part of a portable wireless telephone including a vibrator holding device according to a second embodiment of the present invention.

FIG. 6 is a partially exploded perspective view showing a vibration-vibration motor holding mechanism used in a conventional individual paging receiver.

FIG. 7 is a partial cross-sectional view of a state where the holding mechanism of the vibration motor of FIG. 6 is assembled.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 motor (vibration generating means) 2, 3 metal terminal (sheet metal terminal) 4, 5 stepped part (flexible printed circuit board height regulating means) 6 weight 10 flexible printed circuit board 11 motor coupling piece part (vibration generating means connected 12 Connection part (other parts) 13 Mounting part (other parts) 14, 15 Through hole 16, 17 Land 18 Exposed conductor part 19 Diode 20 First bent part 21 Engagement hole (engagement means) 22, 23 Projection piece 25 Motor cushion (first elastic holding member) 26 Inner surface 27 Upper surface 28 Slit 29, 30 Projection 31, 32 Vertical installation 33, 34 Horizontal installation 35 Printed circuit board 36a Key sheet 36b Receiver 36c Liquid crystal Display 37 Receiving circuit 38 Wireless circuit section 40 Shield case 41 Projection (locking means) 50 Resin case 51 Tree Cover 52 rectangular frame (second holding member) 55 hole 56 sound hole 57 opening 58 transparent window 59 pressing part (pressing means) 60 second bent part (vibration transmission preventing means) 61 third bent part (vibration transmission preventing means) 65 housing 100 motor (vibration generating means) 101 cylindrical motor case 102 rotating shaft 103 sintered bearing 104 magnet 105, 106 commutator 107 cup-shaped coil 108 resin bracket 110, 111 pair of brushes 112, 113 metal terminals (Sheet metal terminals) 114 Eccentric weight 115 Top surface 116 Flexible printed circuit board 117, 118 Solder 125 Motor cushion (first elastic holding member) 127 Cylindrical peripheral surface 130 Rectangular frame (second holding member) 131 Shield case 132 VCO 133 TCVO 134 Print Substrate 135 Grounding leaf spring 40 case 142 pressing part (pressing means) 143 first sidewall 144 second sidewall

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Claims (5)

[Claims] 1. A vibration generating means for generating vibration, a first elastic holding member having a slit formed therein for holding the vibration generating means, and a second holding member for accommodating and holding the first elastic holding member. A vibrator holding device, wherein a slit is formed in a portion corresponding to a side opposite to a direction in which the first elastic holding member is accommodated in the second holding member. 2. A vibration generating means for generating vibration, a first elastic holding member provided with a slit and holding the vibration generating means, a second holding member for accommodating and holding the first elastic holding member, Pressing means for pressing the slit of the first elastic holding member, wherein a slit is formed in a portion corresponding to the side opposite to the housing direction of the first elastic holding member with respect to the second holding member; A vibrator holding device provided so as to intersect a slit of the first elastic holding member. 3. The slit according to claim 1, wherein said slit is a slit for expanding and passing said vibration generating means to be accommodated in said first elastic holding member.
Or the vibrator holding device according to 2. 4. The vibrator holding device according to claim 1, wherein a case accommodating the vibration generating means is grounded. 5. A wireless device comprising the vibrator holding device according to claim 1.