JP2000049915A - Mobile communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile communication device that prevents deterioration in radio communication performance caused by the operation of a vibrator. SOLUTION: A portable telephone set 1 acting as the mobile communication device is electrically connected to a ground pattern 4g formed on a board 4 and a body 3a of a vibrator 3 via a connection member 8 consisting of a shield case 5 and a contact (relay connection member) 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication device having a vibrator installed inside a casing, and more particularly to a measure for radiating high-frequency noise when the vibrator is operated.

[0002]

2. Description of the Related Art Some mobile communication devices such as portable telephones and PHS terminals are provided with a vibrator for notifying a user of an incoming call or the like by vibration. In the conventional mobile phone A shown in FIG. 11, a vibrator V is accommodated and installed inside the casing C by a pair of claws Ca, Ca projecting from the inner surface of the casing C. In addition, the code | symbol P and code | symbol S in a figure are the board | substrate accommodated in the casing C, and a shield case.

[0003]

By the way, as in the above-mentioned portable telephone A, a conventional mobile communication device having a vibrator does not adopt a configuration in which the body of the vibrator is grounded. For this reason, when the vibrator operates, electric high-frequency noise generated from the vibrator is radiated in the casing of the mobile communication device, and the wireless communication performance is greatly deteriorated. An object of the present invention is to provide a mobile communication device that can prevent deterioration of wireless communication performance due to operation of a vibrator in view of the above situation.

[0004]

To achieve the above object, a mobile communication device according to the present invention is a mobile communication device having a vibrator installed inside a casing.
The ground pattern formed on the substrate and the body of the vibrator are electrically connected to each other via a connection member.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments. 1 to 3 show an example in which the present invention is applied to a mobile phone as one of mobile communication devices. The mobile phone 1 has a casing (rear case).
A vibrator 3 is accommodated and installed in the inside 2, and the vibrator 3 is fixed by a pair of claws 2 a, 2 a protruding from the inner surface of the casing 2.

As shown in FIG. 2, a substrate 4 and a shield case 5 are accommodated in a casing (rear case) 2 and a casing (front case) 2 'which are assembled together. Also, as shown in FIG. 2, a ground pattern 4g that is in contact with the flange 5f of the shield case 5 is formed on the back surface of the substrate 4.

On the other hand, inside the casing 2, as shown in FIGS. 1 to 3, a contact 6 as a relay connecting member made of a conductive material is attached. This contact 6 is, as is clear from FIGS.
And a connecting portion 6b abutting on the upper surface of the metallic body 3a of the vibrator 3, and the connecting portion 6b is formed in a downward U-shape. The projections 6c, 6c for contact are provided.

As shown in FIG. 2, the flange 5f of the shield case 5 is in contact with the ground pattern 4g of the board 4 when housed inside the casing 2 and the casing 2 'assembled together. At the same time, the shield case 5 is in contact with the contact 6, and the shield case 5 and the contact (relay connection member) 6
Thus, a connection member 8 that electrically connects the body 3a of the vibrator 3 and the ground pattern 4g of the substrate 4 is configured.

That is, the body 3a of the vibrator 3
Is electrically connected to the ground pattern 4g on the substrate 4 via the contact 6 and the shield case 5 constituting the connection member 8.

According to the portable telephone 1 having the above-described configuration, the high-frequency noise generated during the operation of the vibrator 3 is:
It flows from the body 3a of the vibrator 3 to the contact 6, further flows from the contact 6 to the shield case 5,
Since the shield case 5 falls to the ground burn 4g of the substrate 4, it is possible to suppress the emission of high-frequency noise from the vibrator 3 and thereby prevent the wireless communication performance from deteriorating.

The portable telephone 10 shown in FIG. 4 and FIG.
The contact (relay connection member) 16 is an antenna pipe 17
And a flat connecting portion 16b along the inner surface of the casing 12. The connecting portion 16b is sandwiched between the casing 12 and the vibrator 13, and the connecting portion 16b of the vibrator 13 It is in contact with body 13a.

Since the configuration of the above-described mobile phone 10 except for the contact 16 is basically the same as that of the mobile phone 1 shown in FIGS. 1 to 3, the same operation as that of the mobile phone 1 in FIGS. Are given the same numbers as in FIGS. 1 to 3 but with 10 added, and detailed description is omitted.

[0013] In the above-described portable telephone 10, FIG.
To the mobile phone 1 shown in FIG.
3 is generated by the vibrator 13
Flows from the body 13a to the contact 16, further flows from the contact 16 to the shield case 15, and falls from the shield case 15 to the ground pattern 14g of the substrate 14, so that emission of high-frequency noise from the vibrator 13 can be suppressed, and It is possible to prevent deterioration of communication performance.

The portable telephone 20 shown in FIG. 6 and FIG.
A conductive tape 22 as a relay connecting member is provided on a shield case 21 by a spacer 23 made of a flexible material such as rubber.
Is stuck in a state of being wrapped. Note that this mobile phone 20 is made of conductive tape 2 instead of contacts (6, 16).
The basic configuration of the mobile phone is the same as the mobile phone 1 and the mobile phone 10 except that the mobile phone 1 and the spacer 23 are provided.

As shown in FIG. 6, in a state of being housed and installed in the casing 24 and the casing 24 ', the ground pattern 25g of the board 25 is in contact with the flange 21f of the shield case 21.
The conductive tape 22 is in contact with the vibrator 26, and the shield case 21 and the conductive tape 22 constitute a connection member 27 that electrically connects the body 26 a of the vibrator 26 and the ground pattern 25 g of the substrate 25.

According to the above-described portable telephone 20, high-frequency noise generated during the operation of the vibrator 26 flows from the body 26a of the vibrator 26 to the conductive tape 22, and
Furthermore, it flows from the conductive tape 22 to the shield case 21,
The ground pattern 2 from the shield case 21 to the substrate 25
Since the weight is reduced to 5 g, it is possible to suppress emission of high-frequency noise from the vibrator 26, and to prevent deterioration of wireless communication performance.

According to the above-described portable telephone 20,
With the spacer 23 made of a flexible material wrapped around,
Since the conductive tape 22 is adhered to the shield case 21, the casing 24, 24 'is compressed in the compression direction (vertical direction in the figure).
Even if an external force acts on the shield case 2, the spacer 23 absorbs the deformation of the casing 24.
1 can be prevented from being inadvertently deformed.

The mobile phone 30 shown in FIG. 8 has a connection member constituted by a shield case 31, and includes contacts (6, 16) and conductive tape as relay connection members.
Except that (22) is not provided, the basic configuration of the mobile phone is the same as the mobile phones 1, 10, and 20 described above.

As shown in the figure, in a state of being housed and installed in the casing 32 and the casing 32 ', the ground pattern 33g of the substrate 33 is in contact with the flange 31f of the shield case 31, and
The shield case 31 as a connection member is in contact with the body 34a of the vibrator 34.

According to the portable telephone 30 described above, the high-frequency noise generated during the operation of the vibrator 34 flows from the body 34a of the vibrator 34 to the shield case 31, and falls from the shield case 31 to the ground pattern 33g of the substrate 33. High-frequency noise from the vibrator 34 can be suppressed from being radiated, so that deterioration in wireless communication performance can be prevented.

In the above-described portable telephone 30, since the shield case 31 as a connecting member is directly in contact with the vibrator 34, the above-described portable telephones 1, 1
The relay connection members (contacts 6, contacts 16, and conductive tapes 22) at 0 and 20 are not required, so that the number of manufacturing steps and manufacturing cost can be reduced.

The mobile phone 40 shown in FIG. 9 also has a connection member constituted by a shield case 41. The shield case 41 has a bulging portion 41a which protrudes downward. The basic configuration of the mobile phone is the same as that of the mobile phones 1, 10, and 20 except that the mobile phone does not include the contacts (6, 16) and the conductive tape (22) as relay connection members. .

As shown in the figure, in a state of being housed and installed in the casing 42 and the casing 42 ', the flange 41f of the shield case 41 is in contact with the ground pattern 43g of the board 43,
The bulging portion 41 a of the shield case 41 is in contact with the body 44 a of the vibrator 44.

According to the above-described portable telephone 40, the high-frequency noise generated during the operation of the vibrator 44 flows from the body 44a of the vibrator 44 to the shield case 41 and falls from the shield case 41 to the ground pattern 43g of the substrate 43. High-frequency noise from the vibrator 44 can be suppressed from being radiated, so that deterioration in wireless communication performance can be prevented.

Also, in the above-described portable telephone 40, since the shield case 41 as a connecting member is brought into direct contact with the vibrator 44, the above-mentioned portable telephones 1, 1
The relay connection members (contacts 6, contacts 16, and conductive tapes 22) at 0 and 20 are not required, so that the number of manufacturing steps and manufacturing cost can be reduced.

The portable telephone 50 shown in FIG. 10 has a connection member formed by a conductive plating layer 52 formed on the inner surface of a casing 51. The basic constitution of the portable telephone is the same as the portable telephone described in detail above. There is no difference from the first magnitude.

The conductive plating layer 52 on the inner surface of the casing 51
Extends to the top surface of the rib 51 r supporting the substrate 54, and furthermore, the vibrator 5 fixed to the casing 51.
3, the body 53a comes into contact with the conductive plating layer 52.

As shown in the figure, in the state of being housed and installed inside the casing 51 and the casing 51 ', the ground pattern 54g on the substrate 54 is provided with a rib 5
The conductive plating layer 52 comes into contact with the top surface of 1r.

Thus, according to the above-described portable telephone 50, the high-frequency noise generated during the operation of the vibrator 53 flows from the body 53a of the vibrator 53 to the conductive plating layer 52, and then from the conductive plating layer 52 to the substrate 5
4 falls to the grounding pattern 54g.
4 can be suppressed from radiating high-frequency noise, thereby preventing deterioration of wireless communication performance.

In the above-described portable telephone 50, since the conductive plating layer 52 formed on the inner surface of the casing 51 is used as a connection member, the portable telephones 1, 10, and 10 described above are used.
The relay connecting members (contacts 6, contacts 16, and conductive tape 22) in 20 are not required, so that the number of manufacturing steps and manufacturing cost can be reduced.

In each of the above-described embodiments, an example in which the present invention is applied to a mobile phone is shown. However, the present invention can be applied to various mobile communication devices having a vibrator, such as a PHS with a ringing vibrator function. It goes without saying that the invention can be applied effectively.

[0032]

As described in detail above, a mobile communication device according to the present invention is a mobile communication device having a vibrator installed inside a casing, wherein a ground pattern formed on a substrate and a body of the vibrator are provided. They are electrically connected to each other via connection members. According to the above configuration,
Since the high-frequency noise generated during the operation of the vibrator falls from the body of the vibrator to the ground burn of the substrate via the connecting member, it is possible to suppress the emission of the high-frequency noise from the vibrator, thereby providing the mobile communication device according to the present invention. According to this, it is possible to prevent the wireless communication performance from being deteriorated due to the operation of the vibrator.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a mobile communication device according to the present invention.

FIG. 2 is a sectional view of a main part of a mobile communication device according to the present invention.

FIG. 3 is a plan view showing a relay connection member of the mobile communication device shown in FIGS. 1 and 2;

FIG. 4 is an essential part cross-sectional view showing another embodiment of the mobile communication device according to the present invention.

FIG. 5 is a plan view showing a relay connection member of the mobile communication device shown in FIG. 4;

FIG. 6 is an essential part cross-sectional view showing another embodiment of the mobile communication device according to the present invention.

FIG. 7 is an exemplary perspective view showing a connection member of the mobile communication device shown in FIG. 6;

FIG. 8 is an essential part cross-sectional view showing another embodiment of the mobile communication device according to the present invention.

FIG. 9 is an essential part cross-sectional view showing another embodiment of the mobile communication device according to the present invention.

FIG. 10 is an essential part cross sectional view showing another embodiment of the mobile communication device according to the present invention.

FIG. 11 is an exploded perspective view showing a conventional mobile communication device.

[Explanation of symbols]

1, 10, 20, 30, 40, 50: mobile phone (mobile communication device); 2, 12, 24, 32, 42, 51: casing (rear case), 2 ', 12', 24 ', 32', 42 ', 51' ... casing (front case), 3, 13, 26, 34, 44, 53 ... vibrator, 3a, 13a, 26a, 34a, 44a, 53a ... body, 4, 14, 25, 33, 43, 54 ... board, 4 g, 14 g, 25 g, 33 g, 43 g, 54 g ... ground pattern, 5, 15, 21 ... shield case, 31, 41 ... shield case (connection member), 6, 16 ... contact (relay connection member), 22: conductive tape (relay connection member), 8, 18, 27: connection member, 52: conductive plating layer (connection member).

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenji Fukube 3-1, Asahigaoka, Hino-shi, Tokyo F-term in the Toshiba Hino Plant (reference) 5E321 AA01 AA02 AA14 AA17 BB23 CC09 CC16 GG05 GH10 5K023 AA07 BB06 BB28 HH04 HH12 LL01 LL06 QQ03 5K027 AA11 BB07 FF03 FF25 5K067 AA23 BB04 EE02 FF28 KK17

Claims (4)

[Claims] 1. A mobile communication device comprising a vibrator installed in a casing, wherein a ground pattern formed on a substrate and a body of the vibrator are electrically connected to each other via a connecting member. A mobile communication device characterized by comprising: 2. The mobile communication device according to claim 1, wherein the connection member is a shield case connected to a ground pattern of the board. 3. The connection member according to claim 1, wherein the connection member includes a shield case connected to a ground pattern of the substrate, and a relay connection member connected to the shield case and the body of the vibrator. Mobile communication device as described. 4. The mobile communication device according to claim 1, wherein the connection member is a conductive plating layer formed on an inner surface of the casing and connected to a ground pattern of the substrate.