JPH066252A - Attaching structure for whip antenna - Google Patents

Abstract

PURPOSE:To provide an antenna attaching method by which the transmission and reception of a stable radio wave can be attained. CONSTITUTION:An antenna plate 14 is provided at a circuit print board 12 on a matching box 3 attached to a shield case 2 in a telephone set main body case 1, a screw hole 15 into which an antenna attaching screw 7 is screwed is formed at the antenna plate 14, and an antenna cover 8 is provided at an antenna output port 16 of the main body case 1. Then, the antenna attaching screw 7 is screwed into the antenna plate 14, and the antenna plate 14 is soldered by the circuit board 12 on the matching box 3. Thus, an electric contact can be satisfactory, and a contact stability can be improved. And also, the antenna attaching screw 7 can be prevented from being exposed by the antenna cover 8, an electrostatic destruction from an outside can be prevented, and the sufficient contact stability can be maintained by the processing of a nickel plating or the like at a low cost without conventionally operating the processing of an expensive plating such as a gold plating in order to improve the contact stability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a whip antenna used in a mobile phone.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional whip antenna mounting structure. In FIG. 2, reference numeral 1 is a main body case of a mobile phone, and a shield case 2 in which a wireless circuit is housed is mounted inside the main body case 1.
A matching box 3 is attached to the shield case 2, and a gold-plated contact piece 4 is held on the substrate 12 by soldering. A mounting nut 5 for mounting the antenna body 6 is simultaneously formed on the body case 1 and held in contact with the contact piece 4.

The antenna body 6 has an antenna mounting screw 7
An antenna contact pipe 10 is attached to the lower end of the antenna body 6, and an antenna top 9 is attached to the upper end thereof. And
The antenna body 6 is inserted by an antenna mounting screw 7 from an antenna take-out port 16 provided in the body case 1, and is screwed to the mounting nut 5.

Next, the operation of the above conventional example will be described.
In the antenna of the mobile phone, the core wire of the antenna body 6 and the antenna contact pipe 10 are mechanically pressure-contacted with each other so as to be electrically connected, and the antenna contact pipe 10 is attached with the mounting nut 5 of the body case 1 via the antenna mounting screw 7. Is connected to. Further, the elastic contact piece 4 is brought into pressure contact with the outer wall of the mounting nut 5 to make it conductive, and the mounting nut 5 makes contact with the coaxial cable 11 via the contact piece 4 and the substrate 12 of the matching box 3 to transmit / receive to / from a wireless circuit. Communicate the issue.

As described above, it is possible to transmit and receive radio waves even with the above-described conventional antenna mounting structure.

[0006]

However, in the antenna mounting structure of the above-mentioned conventional example, the circuit connection between the antenna mounting nut 5 and the matching box 3 is the elastic contact piece 4, which ensures sufficient contact pressure and makes contact. In order to reduce the resistance, it is necessary to apply gold plating to the contact piece 4, and it is necessary to increase the mounting accuracy of the matching box 3 and the antenna mounting screw 7 in order to ensure the contact stability, which increases the cost. Had problems such as.

Further, since the antenna mounting screw 7 is exposed to the outside, it is necessary to apply black chromate plating or black nickel plating, which has poor conductivity, according to the color of the case.

Further, the screw part is a hot line,
If it is exposed to the outside, there is a problem that it easily becomes a conduction path such as electrostatic breakdown from the outside.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide an antenna mounting structure capable of stable transmission and reception of radio waves.

[0010]

In order to achieve the above-mentioned object, the present invention provides an antenna plate on a circuit board on a matching box attached to a shield case inside a telephone body case, and the antenna plate is provided with an antenna. It has a structure in which a screw hole to be screwed with the mounting screw is formed and an antenna cover is provided at the antenna extraction port of the main body case.

[0011]

With this structure, therefore, the antenna mounting screw and the antenna plate are directly pressed against each other by screwing, so that expensive plating such as gold plating is not necessary, and the antenna has ordinary conductivity. Plating is sufficient, and since the antenna plate is also directly soldered to the matching box substrate, the contact stability is much more stable than the conventional contact piece structure.

[0012]

Embodiments of the present invention will be described below with reference to FIG. The same parts as those shown in the conventional example are designated by the same reference numerals.

In FIG. 1, reference numeral 1 denotes a main body case of a telephone, a shield case 2 is mounted inside the main body case 1, and a matching box 3 is attached to the shield case 2.

The matching box 3 has a mounting hole 13
Is formed, the antenna plate 14 is attached to the mounting hole 13, and the board 1 of the matching box 3 is formed.
Soldered to 2. And the antenna plate 14
A screw hole 15 is formed in the. The substrate 12 of the matching box 3 is connected to the wireless circuit in the shield case 2 by the coaxial cable 11.

The antenna body 6 has an antenna mounting screw 7
The antenna main body 6 is slidably held and has an antenna contact pipe 10 at the lower end, an antenna top 9 at the upper end, and an antenna mounting screw 7
An antenna cover 8 made of a rubber material is vertically movably mounted between the antenna top 9 and the antenna top 9. A counterbore is formed on the upper surface of the through hole of the antenna body 6 of the antenna mounting screw 7.

A conductive core wire is built in the antenna body 6 and is pressed into contact with the antenna contact pipe 10 so as to be electrically conductive. Then, the antenna main body 6 is inserted from the antenna take-out port 16 of the main body case 1 by the antenna attaching screw 7 and screwed to the antenna plate 14, and the antenna cover 8 is provided to cover the antenna plate 14 and the antenna attaching screw 7. It is fitted in 16.

Next, the operation of the above embodiment will be described.
When transmitting and receiving a mobile phone, the antenna main body 6 is pulled out from the main body case 1 with the antenna top 9 held, and the antenna contact pipe 10 is held so as to fit inside the antenna mounting screw 7. This allows the antenna contact pipe 1
0 and the antenna mounting screw 7 come into contact with each other to establish conduction.

Since the antenna mounting screw 7 is screwed to the antenna plate 14, it is electrically connected to the antenna plate 14, and further the antenna plate 1
4 is soldered to and held on the circuit board 12 on the matching box 3, and the coaxial cable 1
Since 1 is pulled out and connected to the wireless circuit in the shield case 2, the contact stability is good and the signal can be stably transmitted and received from the antenna.

Further, the antenna cover 8 prevents the antenna mounting screw 7 from being exposed and prevents electrostatic damage from the outside.

As described above, according to the above embodiment, the antenna plate 14 is provided on the circuit board 12 on the matching box 3 attached to the shield case 2 inside the telephone body case 1, and the antenna mounting screw is attached to the antenna plate 14. By forming a screw hole 15 to be screwed with the antenna cover 7 and providing the antenna cover 8 to the antenna outlet 16 of the main body case 1, the antenna mounting screw 7 is screwed to the antenna plate 14, and the antenna plate 14 is placed on the matching box 3. Since it is soldered to the circuit board 12, the electrical contact is improved and the contact stability can be increased.

Further, the antenna cover 8 prevents the antenna mounting screw 7 from being exposed to prevent electrostatic damage from the outside. Further, conventionally, expensive plating treatment such as gold plating has been performed for the purpose of ensuring contact stability. However, nickel plating, which is low in cost, has the effect of being able to maintain sufficient contact stability.

Since the whip antenna has hitherto been easily damaged by external force, it has a structure that can be replaced without opening the case to replace the antenna. However, the present invention also uses a rubber material for the antenna cover 8. The rubber cover 8 can be removed first with tweezers or the like, and the antenna mounting screw 7 can be removed with a tool. At this time, the spot facing of the antenna mounting screw 7 facilitates the positioning of the tool, which is convenient.

[0023]

As is apparent from the above embodiments, the present invention provides an antenna plate on a circuit board on a matching box attached to a shield case inside a telephone body case, and the antenna plate is screwed onto the antenna plate. By forming a screw hole to be installed and providing an antenna cover at the antenna outlet of the main body case, since the matching box, the antenna plate, and the antenna mounting screw are mechanically pressure-welded, there is an effect that a stable contact can be made. Further, the mounting screws and the antenna plate may be plated with inexpensive conductive plating such as nickel plating, so that an inexpensive antenna mounting structure can be obtained. In addition, the antenna cover prevents the metal part from being exposed and prevents electrostatic damage from coming from the outside.

Further, since the antenna plate itself also has an antenna effect, it has an effect of improving transmission / reception sensitivity.

[Brief description of drawings]

FIG. 1 is a perspective view of an antenna mounting structure of the present invention.

FIG. 2 is a perspective view of a conventional antenna mounting structure.

[Explanation of symbols]

 1 main body case 2 shield case 3 matching box 6 antenna main body 7 antenna mounting screw 8 antenna cover 12 board 13 mounting hole 14 antenna plate 15 screw hole 16 antenna outlet

Claims (1)

[Claims] 1. An antenna plate is provided on a circuit board on a matching box attached to a shield case inside a telephone body case, and a screw hole to be screwed with a mounting screw of the antenna is formed on the antenna plate. A whip antenna mounting structure with an antenna cover at the antenna outlet.