JP2899468B2 - Wrist watch type call receiver - Google Patents

Abstract

PURPOSE:To provide the wrist watch type calling receiver whose receptible frequency band is independently of the size of an arm of a carrier by preventing improper contact and fault due to mounting/withdrawal of a loop antenna. CONSTITUTION:An antenna 21 has a U-shaped structure and mounted in the inside of a band piece 12a of a band 12 by taking an internal stop structure as a border and at least one band acts like an independent antenna. Furthermore, the antenna 21 is imbeded in the band piece 12a so that both ends of the U shaped structure are directed to a calling receiver main body 10, and when both contact pints 23 provided to both tips of the U shaped structure connect the band 12 and the calling receiver main body 10, a terminal spring 25 on a reception printed circuit board 28 of the calling receiver main body 10 is depressed, Thus, a reception signal from the antenna 21 is delivered to the calling receiver main body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wristwatch-type paging receiver, and more particularly to an improvement of a wristwatch-type paging receiver in which an antenna is mounted inside a belt.

[0002]

2. Description of the Related Art A so-called pager service for wirelessly transmitting a telephone call or a message to an employee who is out of the office is widely used. Such a pager receiver is required to be miniaturized in order to be carried by an employee at all times. On the other hand, a conventional general pager receiver is convenient to carry because it can be worn on the waist belt or pocket of the employee by a clip holder or the like, but the received content is displayed in the worn state when receiving a call. It was difficult to see the display part that was.

[0003] Therefore, in recent years, wristwatch-type pager receivers that are easy to carry and that allow the user to easily see the display unit while wearing the pager at the time of receiving a call have begun to spread.

[0004]

[SUMMARY OF THE INVENTION However, in such a wristwatch type pager receivers, to implement the antenna in the pager receiver body can not the case of the receiver main body made of metal, or the receiver This was extremely difficult due to restrictions such as the need to make the main body small and lightweight.

Therefore, the antenna is mounted inside the band of a wristwatch-type pager receiver. This allows the antenna to operate in the VHF band (frequency 30 to 300 MHz).
z) It is possible to easily secure a length long enough to receive a signal having a frequency equal to or higher than z). A ferrite antenna is more suitable than a loop antenna from the reception performance of the antenna, but a loop antenna whose shape can be changed is most suitable for mounting on a band. FIG. 3 shows a conventional example of a method of mounting an antenna inside a band as described above. As shown in FIG. 3, the loop antenna 11 is integrally formed in a band 12 connected to the pager receiver main body 10, and forms a series of loops when the band is attached via the clasp structure portion 13 of the band 12. Has been implemented.

However, in such a configuration, since the connection of the loop in the clasp structure portion 13 has a great influence on reception, it is difficult to provide a mechanism that can perform well, and therefore this portion may cause a failure. There was a problem that it was easy to become. In addition, since the band 12 has a band adjustment structure in which the length of the band 12 can be adjusted by the clasp structure portion 13 in order to match the thickness of the arm of the employee, the adjustment changes the loop length of the antenna for each employee. Therefore, there is a disadvantage that the receivable frequency band is different for each employee.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to prevent a connection failure and a failure due to attachment / detachment of a loop antenna and prevent a frequency band that can be received by the thickness of the arm of the employee. It is an object of the present invention to provide a wristwatch-type call receiver which is not influenced by the watch.

[0008]

In order to solve the above problems BRIEF SUMMARY OF THE INVENTION, wristwatch-type calling receiver of the present invention, respectively calling receiver main body, both ends of the call receiver body
A pair in which one end is fixed and each other end is buckled
And bands mounted only within one of the pair of bands
And a U-shaped antenna.
It has a structure, and it connects with the said paging receiver main body at both ends of the U-shape of this antenna.

[0009]

In wristwatch type paging receiver of the present invention configured as described above [action], since the mounted inside the hand of the band antenna, failure of an antenna according to the wearing can very small, also the receiving frequency The band does not depend on the thickness of the employee's arm. Furthermore, the antenna without passing through the clasp portion, operates as an independent antenna in hand band.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a wristwatch-type paging receiver according to the present invention, and FIG. 2 is an enlarged view of a connection portion between the paging receiver body and the band on which an antenna is mounted in FIG. An enlarged cross-sectional view is shown.

In the present invention, a wristwatch-type paging receiver according to one embodiment in which an antenna is mounted includes a paging receiver main body 10 and a pair of bands forming a clasp structure type band 12 at both ends of the paging receiver main body 10. Piece 12a and band piece 12b are attached to each other, and the receiving antenna 21 is
It is mounted inside one band piece 12a.

In the present invention, as shown in FIG.
The antenna 21 has a U-shaped structure, and the clasp structure portion 13
Is mounted inside at least one of the bands 12 and operates as an independent antenna in at least one of the bands. This eliminates the need to mount the antenna 21 on the entire belt 12 via the clasp structure portion 13, and therefore does not bother with the clasp structure portion 13.
It must be no longer constituting the mechanism as to improve the connection of the antenna to each other within. Further, reception is possible without forming the belt 12 in a loop shape as in the wearing state.

The material of the antenna used in this embodiment is preferably a metal having a low resistance value, and particularly preferably a copper (Cu) foil.

The method of mounting the antenna and the connection with the call receiver main body 10 will be described in more detail with reference to FIG. The antenna 21 is embedded in the band 12 such that both ends of the U-shaped structure face the paging receiver main body 10. At this time, in this embodiment, the call receiver main body 1
The antenna 21 is embedded in one of the band pieces 12a connected to the antenna 0 by insert molding of rubber.

[0016] At both ends of the U-shaped structure of the antenna 21 embedded in the band 12, terminals 22 for connecting to the call receiver main body 10 are provided. A contact pin 23 is formed at the tip of the terminal 22,
In the middle of the contact pin 23, an O-ring 24 for preventing foreign matter from entering the call receiver main body 10 and improving confidentiality is fitted. In addition, each terminal 2
2 is soldered to both ends of the antenna 21.

On the other hand, the entirety of the call receiver body 10 is protected by a receiver case 27, has a liquid crystal panel for displaying a time and a call message on the front, and a well-known receiving circuit board on the back. , A receiving circuit, a battery, a speaker, and the like. Then, the receiving circuit board 28
A circuit pattern 26 and a terminal spring 25 formed ahead of the circuit pattern 26 are provided at two locations on the upper portion and near the portion connected to the band 12.

For this purpose, by connecting the band 12 to the call receiver main body 10, the two terminal springs 25
The signal is pressed by the two contact pins 23, which are the protrusions of the terminal 22 provided at the tip of the band 12, so that the signal received from the antenna 21 is
Will be told.

In some cases, both ends of the U-shaped antenna 21 embedded in the belt 12 and a part of the receiving circuit of the call receiver main body 10 can be fixed by lead wire soldering. .

[0020]

As described above, in the wristwatch-type paging receiver of the present invention, the antenna is mounted inside at least one of the bands. Is not affected by the thickness of the employee's arm. Further, the antenna can operate as an independent antenna in at least one band without passing through the clasp portion.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a wristwatch type call receiver according to the present invention.

FIG. 2 is an enlarged cross-sectional view in which a connection portion between a call receiver main body in FIG. 1 and a band on which an antenna is mounted is enlarged.

FIG. 3 is a perspective view of an example of a wristwatch-type call receiver equipped with an antenna in a conventional method.

[Explanation of symbols]

 12a band piece 12b band piece 21 antenna 22 terminal 23 contact pin 24 O-ring 25 terminal spring 26 circuit pattern 27 watch case 28 receiving circuit board

Claims (1)

(57) [Claims] 1. A and calling receiver main body, each one end across the front Symbol calling receiver main body of the fixed
Are a pair of bands each the other end clasp, antenna mounted only within one of the pair of bands
A Na and, wherein the antenna has a U-shaped structure, wristwatch-type paging receiver, characterized in that to connect to the calling receiver main body at both ends of the U-shaped said antenna.