JP2002345196A - Electromagnetic vibrator and battery-driven device using the same - Google Patents

Abstract

(57) [Problem] To provide an electromagnetic vibrating body having a structure in which a case of a vibration motor is covered with an elastic body, a cut-out portion provided on the elastic body for facilitating the case insertion work, thereby lowering the reliability of the device. In this case, the reliability of the device and the workability of assembling the device are improved without lowering the workability of inserting the case. A power supply terminal (13) protruding from a case (12) of a vibration motor (10) and electrically connected to a power supply land of a device, and a boot (20) covering at least a part of the case (12), and a housing part (26) for storing the case (12) of the boot (20). The case 1
The eccentric weight 11 is composed of a partial circle circumscribing 2 and the rectangular portion 27, and even if the outer diameter R of the eccentric weight 11 is larger than the outer diameter of the case 12, the assembly is facilitated.

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 battery-powered equipment, and more particularly to a holding structure for the equipment and an electrical connection method.

[0002]

2. Description of the Related Art There is a portable information device such as a battery-driven device (hereinafter referred to as a device), particularly a portable telephone or a PIM (personal information management) device, which has a function of transmitting information by bodily sensation. When attaching an electromagnetic vibrating body to a device, a method of attaching it via an elastic body is often used. The present invention relates to a method for holding an electromagnetic vibrating body in a device having a structure in which the electromagnetic vibrating body is mounted via an elastic body. An example disclosed in Japanese Patent Application Laid-Open No. 2000-78790 is shown in FIG. In the figure, an electromagnetic vibrator projects from a case 83 and a power supply land 93 of the device.
And an elastic body 85 covering the case 83, and an elastic pressing body 86 that can be compressed and deformed is formed in a part of the elastic body. Then, when assembled into the device, by pressing the case, the elastic pressing body 86 presses the power supply terminal 84 against the power supply land 93, and the elastic force of the power supply terminal 84 and the pressing force by the elastic pressing body 86 are combined. It was made.

When assembling the electromagnetic vibrating body, a boot 85 must be put on the vibration motor 81. In this example, a cut-out portion 85a is provided in a part of the boot 85 to facilitate the work. However, depending on the case, the existence of such a cut-out portion may cause a problem. For example, the case and the case are electrically connected at the cut-out part, which reduces reliability.The cut-out part opens when inserted into the equipment, resulting in poor installation workability.Sometimes, the cut-out part is greatly deformed and cannot be incorporated into the equipment. In some cases.

[0004] In order to solve this problem, there is a plan to abolish the cutout portion.
It is difficult to adopt a structure in which only the boots continuously surround the case. This is because when the thin cylindrical motor is inserted into the boot, it must be deformed and pushed in while being elongated, which requires a great deal of labor.

[0005]

The present invention solves such a problem. That is, in the case of an electromagnetic vibrating body having a structure in which the case of a vibration motor is covered with an elastic body, when a cutout portion provided on the elastic body to facilitate the case insertion work reduces the reliability of the device, An object of the present invention is to provide an electromagnetic vibrating body and a battery-driven device that improve the reliability of the device and the workability of assembling the device without lowering the insertion workability, and thus have excellent reliability.

[0006]

According to a first aspect of the present invention, there is provided an electromagnetic vibrating body which projects from a substantially cylindrical case, an eccentric weight, and a case to electrically connect to a power supply land of a device. A vibration motor having a power supply terminal, and an elastic body covering at least a part of the case, wherein the elastic body has a surrounding region continuously surrounding the case, and the elastic body is It has a housing part circumscribing the case, and is formed so that a part of the housing part is separated from the outer surface of the case in the surrounding area.

As described above, the elastic body has the surrounding area that continuously surrounds the case. According to this configuration, the elastic body of the electromagnetic vibrating body surely covers and insulates the case. Therefore, when installed in a device, there is no problem such as conduction between the device and the case at the cutout, and the insulation reliability of the device is improved.At the same time, when installed and inserted into the device, the open elastic body is caught by the device housing As a result, the workability is not deteriorated, so that the workability of assembling into the device is improved. In addition, since the case is continuously enclosed, abnormal and excessive deformation of the case due to the presence of the cutout as a free end is eliminated. Therefore, the case is held with good positional accuracy, the position of the case in the device is stabilized, and the electrical connection reliability of the device is improved.

[0008] Thus, in the surrounding area, at least a part of the housing portion is formed so as to be separated from the outer surface of the case. According to this, the peripheral length of the elastic body accommodating portion is substantially longer than the outer peripheral length of the case. Therefore, the elastic body is easily extended and deformed around the case in the rotation direction (tangential direction), and the work of inserting the case into the elastic body is facilitated. That is, according to the present invention, the work of inserting the case into the elastic body is facilitated, and the insulation reliability and electrical connection reliability of the device are improved.

According to a second aspect of the present invention, there is provided an electromagnetic vibrator,
The elastic body is formed by forming a rectangular spaced part in a part of the housing part in the surrounding area. According to this, since the peripheral length of the elastic body accommodating portion is substantially longer than the outer peripheral length of the case, the above-described operation and effect are exhibited. In addition, the elastic body leaves the housing portion in contact with the outer surface of the case partially or mostly without being separated. Therefore, the case is held with good positional accuracy as if the entire periphery thereof was continuously surrounded, so that the position of the case in the device is stabilized.

According to a third aspect of the present invention, there is provided an electromagnetic vibrator,
The elastic body is formed by forming a recess in the surrounding area from the outer surface side to the housing section side. According to this,
The elastic body has a bellows-like cross section in the rotation direction. Therefore, the elastic body easily expands and deforms in the radial direction as viewed from the case, so that the operation of inserting the case into the elastic body is further facilitated.

[0011] The electromagnetic vibrator according to claim 4 of the present invention comprises:
The elastic body is made of synthetic rubber. As a result, a terminal pressing structure having insulating properties and vibration damping properties can be easily obtained, and at the same time, the elastic body becomes rich in elongation and deformation.

The electromagnetic vibrator according to claim 5 of the present invention comprises:
When incorporated in the device, by pressing the case, a part of the elastic body presses the power supply terminal to the power supply land of the device,
The pressing force of the power supply terminal and the pressing force of the elastic body are combined. Since the elastic body of the present invention continuously surrounds the case, there is no abnormal or excessive deformation of the case due to the presence of the cutout. Therefore, the case is held with high positional accuracy, and the position of the case in the device is stabilized. Such an action enhances the connection reliability of the electrical connection part in the electromagnetic vibrator in which the pressing force of the power supply terminal and the pressing force of the elastic body are combined.

[0013] The electromagnetic vibrator according to claim 6 of the present invention comprises:
The vibration motor has an eccentric weight at one end of the case and a power supply terminal at the other end, and the surrounding area of the elastic body covers an intermediate portion between the eccentric weight and the power supply terminal. When attaching an elastic body to a motor having a power supply terminal at the end of the case, the elastic body must be inserted from the opposite side of the power supply terminal. At that time, the eccentric weight or the case is often deformed, and it is difficult to insert and assemble the elastic body. The present invention is suitably applied to such an electromagnetic vibrator.

According to a seventh aspect of the present invention, there is provided an electromagnetic vibrator,
The vibration motor has an eccentric weight whose outer diameter is larger than the outer diameter of the case. In such a case, insertion and assembly are particularly difficult, and the effects of the present invention are best exhibited.

According to a eighth aspect of the present invention, there is provided a battery-driven device having a power supply land at a position corresponding to a power supply terminal of an electromagnetic vibrator, wherein the power supply terminal is pressed against the power supply land to be electrically connected. Equipment. According to this, the reliability of the device and the workability of assembling the device can be improved without lowering the workability of inserting the case, and a battery-driven device having excellent reliability can be obtained.

[0016]

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

(Embodiment 1) FIG. 1 is an external view of an electromagnetic vibrator according to Embodiment 1 of the present invention. (A) is a front side view, (b) is a front view, (c) is a rear side view,
(D) shows a top view. FIG. 2 is an external view of a boot (elastic body) which is a part thereof. Similarly, (a) shows a front side view, (b) shows a front view, (c) shows a rear side view, and (d) shows a top view.

In FIG. 1, an eccentric weight 11 is attached to a shaft of a vibration motor 10. A motor mechanism for rotating the shaft is housed in the case 12. The outer diameter R of the eccentric weight 11 is configured to be large in order to increase the amount of vibration generated by the vibration motor, and is larger than the outer diameter of the case 12. From one end of the case 12, a leaf spring-like power supply terminal 1 is provided.
3 are protruding. A boot 20 (elastic body) made of synthetic rubber is mounted on the case 12.

The electromagnetic vibrator thus assembled is incorporated in a device in the same manner as shown in the conventional example. The device has a power supply land (not shown), which is crimped to the power supply terminal 13 and supplied with power. When the vibration motor 10 rotates, the vibration is transmitted to the device via the boot 20 and the vibration is notified.

The boot 20 has the shape illustrated in FIG. Although it has a substantially cylindrical shape as a whole, it is roughly composed of a case holding portion 21 for holding the case of the vibration motor and an elastic pressing portion 22 for pressing the power supply terminal. The case holding portion has an opening 23 that opens to the side of the eccentric weight and a terminal lead-out portion 24 that leads out a power supply terminal.

As shown in FIG. 1, when the boot 20 is mounted on the vibration motor 10, the vibration motor is inserted from the terminal lead-out portion 24. At this time, the vibration motor 10 is pushed with the eccentric weight 11 as a head so as not to deform the power supply terminal 13. At this time, the boot 20 does not have a cutout portion as in the conventional example, and the boot 20 is
A portion other than the portion 4 continuously surrounds the case 12. FIG. 2 (b) and FIG.
It is tentatively referred to as the surrounding area 25 as shown in FIG. Further, as shown in FIG. 2A, the boot 20 has a housing portion 26 circumscribing the case 12. The accommodation portion 26 is formed by a partial circle 27 contacting the case and a rectangular separation portion 28 separated from the outer surface of the case. The presence of the rectangular separating portion 27 facilitates the expansion of the boot 20 and facilitates the insertion and assembly.

As described above, in the present embodiment, the boot 20 has the surrounding area 25 continuously surrounding the case 12. According to this, in the electromagnetic vibrating body, the boot 20 reliably covers the case 12. Therefore, when incorporated in the device, there is no problem such as conduction between the device and the case at the cutout portion. In addition, there is no problem that the opened elastic body is caught by the housing of the device when the device is inserted into the device and the workability is deteriorated. In addition, because it surrounds continuously,
There is no abnormal or excessive deformation of the case due to the presence of the slit. Therefore, the case 12 is held with high positional accuracy, and the position of the vibration motor 10 in the device is stabilized.

In the present embodiment, the surrounding area 25
, At least a part of the housing portion 26 is formed to be separated from the outer surface of the case 12. According to this, the peripheral length of the elastic body housing portion 26 is substantially longer than the outer peripheral length of the case 12. Therefore, boot 20 is in case 1
It becomes easy to extend and deform in the rotation direction (tangential direction) around 2, and the work of inserting the case 12 into the boot 20 becomes easy.

In the present embodiment, the boot 20 has a rectangular space 28 in a part of the housing 26 in the surrounding area 25. According to this, since the peripheral length of the elastic body accommodating portion 26 is substantially longer than the outer peripheral length of the case 12, the above-described operation and effect are exhibited. Further, the boot 20 leaves the housing portion 26 in contact with the outer surface of the case 12 as a partial circle 27 without being partially or largely separated.
Therefore, the case 12 is held with good positional accuracy as if the entire periphery thereof is continuously surrounded, so that the position of the vibration motor 10 in the device is stabilized. Furthermore, when a rectangular space is provided, the boot 20 has a uniform wall thickness since the cross-sectional shape of the outer shape is generally rectangular, so that it is easy to manufacture and has good deformability.

In this embodiment, the boot 20 is made of synthetic rubber. As a result, a terminal pressing structure having insulating properties and vibration damping properties can be easily obtained, and at the same time, the boot 20 is rich in elongation deformation. Further, when there is a concern that the holding accuracy may be reduced due to the shape that is easily deformed, the hardness can be easily changed to cope with it.

In the present embodiment, when assembled into the device, a part of the elastic body presses the power supply terminal against the power supply land of the device by pressing the case, and the pressing force of the power supply terminal 13 and the pressing force by the boot 20 are applied. Pressure and pressure are combined. As described above, in this embodiment, case 1
2 is a vibration motor 1 which is held with high positional accuracy and
The position of 0 is stabilized. Such an action is caused by the power supply terminal 13.
And the pressing force of the elastic pressing portion 22 are combined so as to increase the connection reliability of the electric connection portion.

In this embodiment, the vibration motor 1
0 has an eccentric weight 11 at one end of the case 12 and a power supply terminal 13 at the other end.
Covers an intermediate portion between the eccentric weight 11 and the power supply terminal 13. Vibration motor 10 having a power supply terminal at the end of the case
When it is desired to mount the boot 20 on the power supply terminal 13, the boot 20 must be inserted from the side opposite to the power supply terminal 13. At that time, the eccentric weight 11 or the case 12 is often irregular, and it is difficult to insert and assemble the boot 20. The present invention is suitably applied to such an electromagnetic vibrator.

In the present embodiment, the vibration motor 1
0 indicates that the outer diameter of the eccentric weight 11 is larger than the outer diameter of the case 12. In such a case, insertion and assembly are particularly difficult, and the effects of the present invention are best exhibited.

(Embodiment 2) FIG. 3 shows various applied modifications of the cross-sectional shape of the surrounding area of the boot (elastic body) according to the present invention. The boot 30 shown in FIG. 3A is formed by forming a concave portion 32 extending from the outer surface side of the boot toward the accommodation portion 31 side. At the same time, it has a wide partial circle 33 and a rectangular separated portion 34. According to this, the boot 30 has a bellows shape whose cross-sectional shape is easily deformed in the rotation direction. Therefore, since the boot 30 is easily extended and deformed in the radial direction as viewed from the case, the operation of inserting the vibration motor 10 into the boot 30 is facilitated.

The boot 35 shown in FIG.
Has a shape in which circular portions 37 and rectangular portions 38 are alternately connected. The boot has a substantially uniform thickness and large deformation performance. The boot 39 shown in FIG. 3C has a shape in which a large part of the accommodating portion 40 is kept circular and a small slit-shaped separation portion 42 is added to a partial circle 41. High retention stability. The boot 43 shown in FIG. 3D has a configuration in which the sectional shape of the accommodation portion 44 is circumscribed to the case.
It is a square. According to this, the range in which the housing portion 44 contacts the case is reduced. So boot 4
3 is easily deformed in the radial direction, so that the insertion work becomes easy.

Although several embodiments of the present invention have been described above, it is needless to say that the present invention is not limited to the above embodiments, and various applications and developments are possible within the scope of the present invention. .

[0032]

As is apparent from the above description, according to the present invention, in an electromagnetic vibrating body having a structure in which the case of a vibration motor is covered with an elastic body, the case is provided on the elastic body to facilitate the case insertion work. When the cutout of the device reduces the reliability of the device, it improves the reliability of the device and the work of assembling the device without lowering the workability of inserting the case. Equipment can be provided.

[Brief description of the drawings]

FIG. 1 is an external view of an electromagnetic vibrating body according to Embodiment 1 of the present invention (a) a front side view (b) a front view (c) a rear side view (d) a top view

FIG. 2 is an external view of a boot (elastic body) of the electromagnetic vibrating body according to the first embodiment of the present invention; (a) a front side view; (b) a front view; (c) a rear side view;

FIG. 3 is a view showing an applied modification of the cross-sectional shape of the surrounding area of the boot according to the present invention. FIG. 3 (a) is a view showing a section having a concave portion from the outer surface side to the accommodation section side. Figure showing an alternately connected shape. (C) A view showing a case where most of the accommodating portion is kept circular and a small slit-shaped separating portion is added. (D) A sectional shape of the accommodating portion is circumscribed around the case. Figure showing hexagonal shape

FIG. 4A is an explanatory view of a mounting structure of an electromagnetic vibrator according to a conventional example. FIG. 4B is an explanatory view of a mounting structure of an electromagnetic vibrator according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vibration motor 11 Eccentric weight 12 Case 13 Power supply terminal 20, 30, 35, 39, 43 Boot (elastic body) 21 Case holding part 22 Elastic pressing part 23 Opening 24 Terminal lead-out part 25 Surrounding area 26 Housing part 27 Partial circle 28 Rectangular spacing

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02K 5/24 H02K 5/24 A 7/065 7/065 H04M 1/02 H04M 1/02 C (72) Inventor Eiichi Inaba 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. (reference) CC03 CC05 DD08 DD17 EE57 FF01 JJ06 JJ08 KK08 5K023 AA07 BB04 HH00 MM03

Claims (8)

[Claims] 1. An electromagnetic vibrator comprising an eccentric weight, a substantially cylindrical case, a vibration motor having a power supply terminal projecting from the case and electrically connecting to a power supply land of an apparatus, and an elastic body covering at least a part of the case. Wherein the elastic body has a surrounding area that continuously surrounds the case, and the elastic body has a housing part circumscribing the case, and a part of the housing part in the surrounding area. Is formed so as to be separated from the outer surface of the case. 2. The electromagnetic vibrating body according to claim 1, wherein the elastic body has a rectangular separation portion formed in a part of the housing portion in the surrounding area. 3. The electromagnetic vibrating body according to claim 1, wherein the elastic body has a recess formed in the surrounding area from the outer surface side toward the housing section side. 4. The electromagnetic vibrator according to claim 1, wherein the elastic body is a synthetic rubber. 5. When incorporated in a device, a part of the elastic body is pressed by the power supply land of the device by pressing the case, and the pressing force of the power supply terminal and the pressing force by the elastic body are combined. The electromagnetic vibrator according to claim 1, wherein: 6. The vibration motor has an eccentric weight at one end of the case and a power supply terminal at the other end, and a surrounding region of the elastic body covers an intermediate portion between the eccentric weight and the power supply terminal. The electromagnetic vibrator according to claim 1. 7. The electromagnetic vibrating body according to claim 1, wherein the outer diameter of the eccentric weight of the vibration motor is larger than the outer diameter of the case. 8. An electromagnetic vibrator according to claim 1, having a power supply land at a position corresponding to a power supply terminal of the electromagnetic vibrator, and pressing the power supply terminal against the power supply land. Battery-powered equipment configured to be electrically connected.