JPH0448035Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to the structure of a cordless telephone in which a handset and a main body are connected wirelessly.

[Conventional technology]

Recently, due to the revision of the Radio Law, cordless telephones in which a handset and a main body are connected wirelessly are being widely used as home telephones.

5 to 8 are drawings illustrating the main body of the conventional cordless telephone, including a circuit board 1 for controlling telephone calls, outgoing calls, and incoming calls, and the circuit board 1.
A radio device 3 that transmits and receives calls, outgoing calls, and incoming calls controlled by It is composed of base plates 4 and 5 and a housing 6 for housing these parts. The casing 6 consists of a bottom plate 6a serving as a lower casing of the main body, and an upper casing 6b that covers the bottom plate 6a and also serves as a hanger for the transmitter/receiver.
The ground plate 4 is assembled to the bottom plate 6a, and the ground plate 5
is adapted to be assembled into the upper housing 6b.

[The problem that the idea aims to solve]

By the way, in the main body of the conventional cordless telephone, the circuit board 1, the radio device 3, and the grounding plate 4 are assembled to the bottom plate 6a of the housing 6, and the grounding plate 5 is assembled to the upper housing 6b. Therefore, the ground connection of the circuit board 1 and the radio device 1 is simply in contact with the tongues 5a and 5b of the grounding plate 5, and there is a problem in the connectivity with the tongues 5a and 5b of the grounding plate 5. There was a problem with internal noise. Also,
The conventional product has a large number of parts and a complicated structure, resulting in high costs. Furthermore, in the main body of this type of cordless telephone, function setting switches and the like are often installed so as to be operated from the bottom plate 6a side, but in the conventional product, the component mounting surface of the circuit board 1 is placed on the upper case 6b side. Therefore, it is impossible to mount a function setting switch, etc. on the component mounting surface of the circuit board 1 and solder it with a single solder dip. There was a problem in that it was necessary to perform a solder dip treatment on both sides of the circuit board 1 during the process, resulting in poor workability.

Therefore, the object of this invention is to provide a cordless telephone having a structure that solves the above problems.

[Means to solve the problem]

In order to achieve the above purpose, this invention
A circuit board that controls outgoing and incoming calls, a radio device that transmits and receives calls, outgoing calls, and incoming calls controlled by the circuit board to and from a transmitter and receiver via an antenna, and a grounding plate that stabilizes the operation of the radio device. In the main body of the cordless telephone, which is composed of a bottom plate and an upper case for housing these parts, the circuit board and the ground plate are formed in an integral structure, and the circuit board part is The radio device is integrally fixed on a conductive pattern formed on the installation plate in the same direction as the component mounting surface, and these are attached to the upper casing of the casing so that the component mounting surface of the circuit board section is on the bottom plate side of the casing. It was assembled so that it faced.

[Effect]

Since the circuit board, radio device, and ground plate are assembled into the upper case of the housing, and the circuit board and the ground plate are formed into an integral structure, the radio device can be directly attached onto the conductive pattern of the ground plate. The ground connection of the circuit board and radio device is now secure.

〔Example〕

An embodiment of this invention will be described below with reference to FIGS. 1 to 4.

1 to 4 are explanatory diagrams showing the main body of the cordless telephone according to this invention, in which FIG. 1 is a plan view thereof, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, and FIG. The figure is a perspective view of the main parts of this invention. In these drawings, 11 is a casing, which includes a bottom plate 11a serving as the lower casing of the main body, and a bottom plate 11a that covers this and also serves as a hanging stand for a transmitter/receiver (not shown). and an upper housing 11b. Reference numeral 12 denotes a circuit board section for controlling telephone calls, outgoing calls, and incoming calls, which is assembled into the upper casing 11b of the casing 11 with its component mounting surface facing the bottom plate 11a of the casing 11. Reference numeral 13 denotes a grounding plate portion integrally formed with the circuit board 12, and a conductive pattern is formed on a surface in the same direction as the component mounting surface of the circuit board portion 12. 14
is a radio device that transmits and receives calls, outgoing calls, and incoming calls controlled by a circuit board section 12 to and from a transmitter/receiver via an antenna 15, and is directly attached to the conductive pattern of the ground plate section 13 and fixed integrally. There is.

According to the main body of the cordless telephone according to this invention, the circuit board section 1 is attached to the upper housing 11b of the housing 11.
2. Since the ground plate part 13 and the radio device 14 are assembled, the ground connection of the circuit board part 12 and the radio device 14 can be glued together with the ground plate part 13, and the ground connection with the ground plate part 13 can be made. has become more reliable and ground contact has been improved. Further, the circuit board section 12 and the ground plate section 13 are made into an integral structure, and the radio device 14 is directly attached to the conductive pattern of the ground plate section 13, and further,
Since the distance between the radio device 14 and the bottom plate 11a of the housing 11 is increased to make it less susceptible to induction from the bottom plate part, and the ground plate between them is omitted, the number of parts is reduced, the structure is simplified, and the manufacturing cost is low. becomes.
Furthermore, since the component mounting surface of the circuit board section 12 is directed toward the bottom plate 11a of the housing 11, it is possible to mount a function setting switch, etc. on the component mounting surface of the circuit board section 12. The workability of the dip treatment process can be improved.

[Effect of idea]

According to this invention, the ground connection of the circuit board and the radio device is ensured, internal noise can be prevented, the number of parts is reduced, the structure is simplified, and the manufacturing cost is low. We were able to improve workability in the solder taping process for circuit boards.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the main body of a cordless telephone according to this invention, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, and FIG. 4 is a perspective view of essential parts of this invention. FIG. 5 is a plan view showing the main body of a conventional cordless telephone, FIG. 6 is a front view thereof, FIG. 7 is a side view thereof, and FIG. 8 is a perspective view of essential parts of the conventional cordless telephone. DESCRIPTION OF SYMBOLS 11... Housing, 11a... Bottom plate, 11b... Upper housing, 12... Circuit board part, 13... Ground plate part,
14...Radio device, 15...Antenna.

Claims (1)

[Claims for Utility Model Registration] A circuit board that controls telephone calls, outgoing calls, and incoming calls; a radio device that transmits and receives calls, outgoing calls, and incoming calls controlled by the circuit board to and from a transmitter and receiver via an antenna; In the main body of a cordless telephone, which is composed of a grounding plate that stabilizes the operation of the radio device, and a casing consisting of a bottom plate and an upper casing for housing these parts, the circuit board and the grounding plate are integrated. The radio device is integrally fixed onto a conductive pattern formed on the installation plate section in the same direction as the component mounting surface of the circuit board section, and these are attached to the circuit board section on the upper casing of the casing. A cordless telephone characterized in that it is assembled so that the component mounting surface faces the bottom plate side of the casing.