JP2002176745A - Electro-magnetic vibration body and mobile terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a full flexible electro-magnetic vibration body which can be mounted to various types of mobile terminals without increase of cost and time. SOLUTION: The electro-magnetic vibration body comprises a vibration generating mechanism, a case for accommodating the vibration generating mechanism, and a power feeding terminal which is provided at the end thereof and is placed in contact with a power feeding land portion of a device for electrical connection. The power feeding terminal is formed of a conductive metal wire. If displacement is generated between the power feeding land portion and contact when the electro-magnetic vibration body is set to the device, the length of the power feeding terminal can be set depending on such displacement. As a result, reliable contact can be attained between the contact and the power feeding land portion to obtain the reliable electrical connection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic vibrator mainly used for a portable terminal, and more particularly to an electric connection structure between the electromagnetic vibrator and the portable terminal.

[0002]

2. Description of the Related Art Conventionally, there is a portable terminal (hereinafter, referred to as a device as necessary) such as a portable telephone / PIM (personal information management) device which transmits information by bodily sensation vibration. The vibration generation method is often an electromagnetic drive method in terms of cost and energy efficiency. For example, a rotary vibration structure in which an eccentric weight is attached to a motor, or a reciprocating vibration structure similar to a speaker. In recent years, as a method of mounting the electromagnetic vibrating body on a portable terminal device, in recent years, there has been a growing demand that the electromagnetic vibrating body can be mounted easily, preferably with an automatic assembling machine. It has come to be. Japanese Patent Application Laid-Open No. 12-78790 discloses a similar example. FIG. 8 is a side view of a conventional motor mounting structure.

In FIG. 8, an eccentric weight 2 is attached to a rotating shaft of a thin cylindrical motor 1 to form an electromagnetic vibrator. A drive mechanism for rotationally driving the shaft is housed in the case 3, and the rotational drive mechanism and the eccentric weight 2 constitute a vibration generating mechanism. A leaf spring-shaped power supply terminal 13 protrudes from one end of the case 3, and the case 3 is covered with a boot (elastic body) 14 made of synthetic rubber. The boot 14 is substantially cup-shaped, and a part thereof is cut open so that the case 3 can be easily accommodated.

A circuit board 6 and a housing 8 are provided on the equipment side, and the motor 1 is sandwiched between the two. The circuit board 6 has a power supply land 7 at a position corresponding to the contact point of the power supply terminal 13.

[0005] With this configuration, the motor 1 is mounted on the circuit board 6.
And the housing 8 is attached and fixed, the motor 1 is crimped to the circuit board 6, and the contact of the power supply terminal 13 elastically contacts the power supply land 7 to supply power.

A leaf spring-like power supply terminal 13 is connected to one end of the case 3.
Are projected, and a substantially triangular elastic pressing body 15 is formed behind the power supply terminal 13. When the motor 1 is mounted on the portable terminal, the contact of the power supply terminal 13 elastically contacts the power supply land 7. Further, the substantially triangular elastic pressing body 15 presses the contact of the power supply terminal 13 from behind. According to this, the motor 1 can be easily mounted on a portable terminal device and can be reliably electrically connected.

[0007]

In the above-mentioned conventional example, it is necessary to apply an appropriate elastic force to the power supply terminal 13 in the form of a leaf spring in order to perform reliable electric connection. Since the power supply terminal 13 is formed in a leaf spring shape, the elastic force increases when the terminal length is set short, and the elastic force decreases when the terminal length is set long. Therefore, the contact of the power supply terminal 13 is also determined at a substantially constant position.

However, in an actual portable terminal, the position of the power supply land 7 may be different for each model. Therefore, when mounting the motor 1 having the leaf spring-shaped power supply terminal 13 on a portable terminal, the motor 1 is used for a portable terminal of a model in which the position of the power supply land 7 and the contact position of the power supply terminal 13 match. It could be mounted, but could not be mounted on models that did not match because electrical connection was not possible. Therefore, the types of portable terminals that can be mounted are limited, so that the versatility of the motor is lacking, and when the terminal length of the power supply terminal is changed for mounting on various models, the spring constant and the terminal thickness are reduced. It had to be redesigned, spending time and money on design and manufacturing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made to realize a highly versatile electromagnetic vibrator which can be mounted on various types of portable terminals without spending cost and time. The purpose is to contribute.

[0010]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a vibration generating mechanism,
A case accommodating at least a part of the vibration generating mechanism, a power supply terminal protruding from the case and supplying power to the vibration generation mechanism, provided at an end of the power supply terminal, and electrically connected to a power supply land of the device; In an electromagnetic vibrator provided with a contact, the power supply terminal is formed of a conductive wire,
The length of the power supply terminal is set according to a relative position between a power supply land and the contact.

According to a second aspect of the present invention, there is provided a vibration generating mechanism, a case accommodating at least a part of the vibration generating mechanism, an elastic body covering at least a part of the case, An electromagnetic vibrating body comprising: a power supply terminal projecting to supply power to the vibration generating mechanism; and a contact provided at an end of the power supply terminal and in contact with a power supply land of an apparatus to be electrically connected to the power supply terminal. And a length of the power supply terminal is set in accordance with a relative position between a power supply land and the contact.

Further, the invention according to claim 3 of the present invention provides:
The shape of the terminal contact portion of the electromagnetic vibrator is spiral.

As described above, since the terminal length of the power supply terminal can be set according to the relative position between the power supply land portion and the electromagnetic vibrator, various types of portable terminal devices can be obtained by an extremely easy method. Therefore, it is possible to provide an electromagnetic vibrating body that can appropriately supply power according to the conditions.

The invention according to claims 4 to 6 of the present invention provides:
It is a more specific representation of an applicable electromagnetic vibrator.

[0015] The invention according to claim 7 of the present invention is a portable terminal device provided with an electromagnetic vibrator having the above operation.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a side view showing a thin cylindrical motor with an eccentric weight in an electromagnetic drive in a portable terminal according to an embodiment of the present invention.

In FIG. 1, an eccentric weight 2 is attached to a shaft of a thin cylindrical motor 1 (hereinafter referred to as a motor). A drive mechanism for rotating the shaft is accommodated in the case 3. The rotation generating mechanism and the eccentric weight constitute a vibration generating mechanism. A power supply terminal 4 that is electrically and physically connected to a brush (not shown) protrudes from one end of the case 3.

Each of the pair of power supply terminals 4 has a diameter of about 0.3
It is made of a conductive metal wire such as brass of about 1.0 mm or brass, oxygen-free copper or the like, and a spiral contact 5 is formed at the tip thereof. Further, the contact 5 is formed in a tapered shape whose diameter is reduced downward, so that the contact 5 itself has a height H2.

FIG. 2 is a view showing an image when the motor is set on a circuit board on the device side, and FIG. 3 is a portion for explaining a state when the motor is set on the device by putting an elastic body over the motor. FIG. 4 is a partial side sectional view showing a state in which a gap has occurred between a power supply land portion and a contact point in FIG. 3, and FIG. 5 is a sectional view of a power supply terminal of the motor in FIG. FIG. 6 is a partial side sectional view showing a state when the terminal length is adjusted and the device is set in the device. As shown in FIG. 2, power is supplied from the portable terminal to the motor 1 by bringing a power supply land 7 provided on a circuit board 6 into contact with a contact 5 on the motor 1 side.

However, since the power supply terminal 4 is made of a wire having relatively low spring properties, such as brass, brass, oxygen-free copper, etc., the power supply terminal 4 itself has almost no pressing force. Therefore, FIG.
Even if the power supply land 7 and the contact 5 are simply brought into contact with each other as described above, the contact 5 and the power supply land 7 are constantly contacted and separated with the vibration generated by the motor 1 to cause an unstable contact state. It is difficult to get a reliable electrical connection.

Also, since the spring property is relatively small, when the device on which the motor 1 is mounted falls and receives a large impact, the power supply terminal 4 is easily subjected to a large plastic deformation due to the impact.
Then, the deformation causes the contact 5 and the case 3 to come into contact with each other, resulting in an electric short circuit.

Therefore, when the motor 1 is actually mounted on the portable terminal, the elastic body (bracket) 10 is put on the motor 1 as shown in FIG. More specifically, after covering an elastic body (bracket) 10 made of rubber so as to cover the case 3 of the motor 1, the elastic body 10 is mounted on a holder 9 provided on the device side housing 8 for mounting the motor 1. The motor 1 is fitted and mounted on the circuit board 6. The elastic body 10 is partially cut open so that the motor 1 can be easily accommodated. By using the elastic body 10, the gap H1 between the substrate 6 and the elastic body 10 during mounting can be made smaller than the height H2 of the contact itself (see FIG. 1). Therefore, since the contact 5 is sandwiched between the elastic body 10 and the circuit board 6, even if the power supply terminal 4 itself has a small spring property, the contact 5 can be sufficiently pressed against the power supply land portion 7, and a reliable electric connection can be achieved. Is obtained. Further, by interposing a rubber elastic body 10 between the contact 5 and the case 3, the electric short circuit can be prevented, and when the eccentric weight 2 rotates and the motor 1 generates vibration, The generation of abnormal noise due to the contact between 1 and holder 9 can be suppressed. In addition, since the periphery of the motor 1 is covered with the elastic body 10, vibration damping characteristics,
Environmental resistance can also be obtained.

Next, the structure of the power supply terminal 4 which is a main part of the present invention will be described. As shown in FIG.
Is provided with a holder 9 for positioning in the front, rear, left and right directions so that the contact 5 of the motor 1 contacts the power supply land 7 correctly. The motor 1 is fitted into the holder 9 and mounted on the circuit board 6. However, since the relative positions of the holder 9 and the power supply land 7 are different depending on the type of the portable terminal device, the relative positions of the motor 1 and the power supply land 7 are naturally different. Accordingly, if the terminal length of the power supply terminal 4 is kept constant, the power supply land 7 and the contact 5
Between the mobile terminal and the motor 1
Some cannot supply power to

In this embodiment, when a deviation occurs, the deviation is eliminated by adjusting the length of the conductor of the power supply terminal 4 and changing the terminal length as shown in FIG. 7 to realize a reliable electric connection in response to the difference in the relative position with respect to the position 7. As described above, since the power supply terminal 4 is a metal wire, the length of the wire is set according to the type of the mobile terminal, and cut off based on the set value to form the contact 5 in a winding manner, which is not shown. The terminal length can be set with a high degree of freedom simply by electrically and physically connecting to the brush.

In this embodiment, at the time of mounting,
Since the terminals a and 10b elastically contact the circuit board 6, the terminal length of the power supply terminal 4 can be freely set between 10a and 10b. Therefore, it is possible to provide a motor capable of appropriately supplying power according to various types of portable terminals by a very easy method.

The first embodiment of the present invention has been described above.
The present invention is not limited to the above embodiments, and various applications and developments are possible within the scope of the present invention. For example,
In the first embodiment, the brush type electromagnetic vibrator has been described. However, the power supply terminal structure of the present invention may be applied to a brushless type electromagnetic vibrator. In this case, the wire constituting the power supply terminal is physically and electrically connected to a vibration generating mechanism such as a coil.

(Embodiment 2) Next, another embodiment of the present invention will be described with reference to FIG. FIG. 6 is a partial sectional side view showing a state in which a flat disk-shaped electromagnetic vibrator is set in a portable terminal. This electromagnetic vibrating body is one in which a reciprocating vibrator is accommodated in a case, or one in which a flat motor is attached to an eccentric weight and accommodated in a case. Regarding the structure and configuration of the second embodiment, only the differences from the first embodiment will be described. Note that the same structures and configurations as those of the first embodiment are denoted by the same reference numerals, and the description of the first embodiment can be applied.

Reference numeral 9 denotes a holder provided on the device-side casing 8, into which the electromagnetic vibrating body 11 is fitted and mounted. As can be seen from FIG. 6, the electromagnetic vibrating body 11 is fitted and mounted on the holder 9, and is mounted such that the contact 5 of the power supply terminal 4 contacts the power supply land 7 on the circuit board 6. An insulator 16 having substantially the same dimensions as the end face of the case 3 is integrally provided on the terminal side end face of the case 3. The insulator 16 is made of a substrate made of FPC or glass epoxy, a resin, or the like. By using this insulator 16, the gap H3 between the board 6 and the insulator 16 at the time of mounting is increased by the height H2 of the contact itself (see FIG. 1).
Can be smaller. Therefore, the contact 5 is an insulator
Since the power supply terminal 4 is sandwiched between the power supply terminal 4 and the power supply terminal 4 itself, the contact 5 can be sufficiently pressed against the power supply land portion 7 and a reliable electric connection can be obtained. Further, since the insulator 16 is interposed between the contact 5 and the case 3, the electric short circuit can be prevented.

Next, the structure of the power supply terminal which is a main part of the present invention will be described. As shown in FIG. 6, the power supply terminal 4 protrudes from one end of the case 3. For the same reason as in the first embodiment, the terminal length of the power supply terminal 4 is changed according to the model of the portable terminal.

Since the power supply terminal 4 is a metal wire, the length of the wire is set in accordance with each model of the portable terminal, and the contact 5 is cut and wound based on the set value. Alternatively, the terminal length can be set with a high degree of freedom simply by electrically and physically connecting to a current-carrying part such as a coil. Therefore, it is possible to provide an electromagnetic vibrator that can supply power appropriately according to various types of portable terminal devices by an extremely easy method.

(Embodiment 3) Next, another embodiment of the present invention will be described with reference to FIG. FIG. 7 is a partial side sectional view showing a state in which an elastic body (bracket) is put on a flat disk-shaped electromagnetic vibrator and set on a portable terminal. Regarding the structure and configuration of the third embodiment, only the differences from the second embodiment will be described. The same structures and configurations as those of the second embodiment are denoted by the same reference numerals, and the description of the third embodiment can be applied, and thus redundant description will be omitted.

In FIG. 7, an elastic body (bracket) 12 made of rubber is covered so as to cover the case 3 of the electromagnetic vibrating body 11, and the electromagnetic vibrating body 11 is fitted into the holder 9 together with the elastic body 12, and is attached to the circuit board 6. Implement.

By mounting as described above, the electromagnetic vibrating body 11
Even when vibration occurs due to the operation of the device, generation of abnormal noise due to contact between the electromagnetic vibrator 11 and the holder 9 can be suppressed.
In addition, since the periphery of the electromagnetic vibrating body 11 is covered with the elastic body 12, vibration damping characteristics and environmental resistance can be obtained.

The structure of the power supply terminal which is a main part of the present invention will be described. As shown in FIG. 7, the power supply terminal 4 protrudes from one end of the case 3. For the same reason as in the first embodiment, the terminal length of the power supply terminal 4 is changed according to the model of the portable terminal.
Since the terminals 12a and 12b elastically contact the circuit board 6, the terminal length of the power supply terminal 4 can be freely set between 12a and 12b.

[0036] With this configuration, it is possible to obtain an electromagnetic power that can be appropriately supplied according to various portable terminal models by an extremely easy method while suppressing abnormal noise, suppressing vibration, and achieving environmental resistance. A vibrator can be provided.

As described above, the present invention can be applied to various types of electromagnetic vibrators. Further, the present invention is not limited to the above embodiments, and various applications and developments are possible within the scope of the present invention. For example, the contact 5 may be formed in a shape opposite to that of the embodiment, that is, in a tapered shape whose diameter is enlarged downward, or in a spiral shape having substantially the same diameter from above to below.

[0038]

As is apparent from the above description, according to the present invention, since the power supply terminal is formed of a metal wire, the terminal length of the power supply terminal is deviated from the relative position between the power supply land and the electromagnetic vibrator. Can be easily changed and set. Therefore, the present invention contributes to the realization of an electromagnetic vibrator capable of appropriately supplying power according to various types of portable terminal devices by an extremely easy method.

[Brief description of the drawings]

FIG. 1 is a side view showing a thin cylindrical motor with an eccentric weight in an electromagnetic driving body according to an embodiment of the present invention.

FIG. 2 is a view showing an image when the motor of FIG. 1 is set and mounted on a circuit board on a device side;

FIG. 3 is a partial side cross-sectional view illustrating a state in which an elastic body is put on the motor of FIG. 1 and the motor is set in an apparatus.

FIG. 4 is a partial side sectional view showing a state in which a gap has occurred between a power supply land portion and a contact point in FIG. 3;

FIG. 5 is a partial side sectional view showing a state in which the terminal length of a power supply terminal of the motor shown in FIG. 4 is adjusted and set to a device.

FIG. 6 is a partial side cross-sectional view showing a state in which a flat disk-shaped electromagnetic vibrator is set and mounted on a portable terminal device in the electromagnetic driver of the embodiment of the present invention.

FIG. 7 is a partial sectional side view showing a state in which an elastic body (bracket) is put on a flat disk type electromagnetic vibrating body and attached to a portable terminal.

FIG. 8 is a side view of a conventional motor mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Motor 2 ... Eccentric weight 3 ... Case 4 ... Power supply terminal 5 ... Contact 6 ... Circuit board 7 ... Power supply land part 8 ... Equipment side housing 9. ..Holders 10, 12 ... Elastic bodies 10a, 10b ... Elastic support parts 11 ... Electromagnetic vibrators 12a, 12b ... Elastic support parts 13 ... Leaf spring-shaped power supply terminals 14 ... Boots 15 ・ ・ ・ Elastic pressing body 16 ・ ・ ・ Insulator

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Riki Iimura 3-8-22 Nitta, Adachi-ku, Tokyo Namiki Seiki Co., Ltd. F-term (reference) 5D107 AA12 AA13 BB08 CC08 DD09 FF05 FF10 5H605 CC02 CC06 EA15 EA16 EA19 EC01 EC07 EC08 EC20 5H607 AA17 BB08 BB14 BB20 CC01 DD10 DD11 DD19 EE57 JJ08 JJ09 KK08

Claims (7)

[Claims] A vibration generating mechanism, a case accommodating at least a part of the vibration generating mechanism, a power supply terminal projecting from the case and supplying power to the vibration generation mechanism, and a power supply terminal provided at an end of the power supply terminal. In an electromagnetic vibrator having a contact that is in contact with and electrically connected to a power supply land, the power supply terminal is formed of a conductive wire, and the length of the power supply terminal is set to a value relative to the power supply land and the contact. An electromagnetic vibrating body characterized in that it is set according to various positions. 2. A vibration generating mechanism, a case accommodating at least a part of the vibration generating mechanism, an elastic body covering at least a part of the case, and a power supply terminal protruding from the case and supplying power to the vibration generating mechanism. And a contact provided at an end of the power supply terminal, the contact being in contact with a power supply land of the device and electrically connected thereto, wherein the power supply terminal is made of a conductive wire, and the length of the power supply terminal is increased. The electromagnetic vibrating body is set in accordance with a relative position between a power supply land and the contact. 3. The electromagnetic vibrator according to claim 1, wherein the contact has a spiral shape. 4. The electromagnetic vibrator according to claim 1, wherein the electromagnetic vibrator has a reciprocating oscillator. 5. The electromagnetic vibrating body according to claim 1, wherein the electromagnetic vibrating body is an eccentric weight motor. 6. The electromagnetic vibrating body according to claim 2, wherein the electromagnetic vibrating body is a thin cylindrical motor with an eccentric weight. 7. A portable terminal equipped with the electromagnetic vibrator according to claim 1.