JPS632376B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radio device housing that improves the characteristics of unnecessary radiation from the radio device.

Conventionally, in wireless communication devices such as car telephones that have strict electrical standards, the transmitter, receiver, antenna duplexer, etc. are placed in separate cases and shielded.
Coaxial connectors were attached to the input/output terminals of each part, and coaxial cables were used to connect these connectors.However, in a small radio device, a large amount of space is wasted, and there are also many connection parts such as connectors and cords. This makes it difficult to miniaturize and reduce costs, and deterioration of characteristics due to unnecessary radiation of radio waves from connections such as coaxial cables has been a problem.

The object of the present invention is to eliminate these drawbacks and provide a stable housing for a small radio device such that when pre-adjusted parts are assembled, the required overall characteristics can be obtained by simply accumulating the characteristics of each part. That is.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below by way of an embodiment thereof with reference to the drawings.

In Fig. 1, reference numeral 1 denotes a housing body which is box-shaped with openings at the top and bottom, a partition plate 2 that divides the inside into upper and lower parts, and a middle partition that divides the upper part of the partition plate 2 into three blocks in the horizontal direction. Boards 3 and 4 are provided, and the upper three blocks house a transmitting part printed board 5, a frequency synthesizer part printed board 6, and a receiving part printed board 7, each having components mounted thereon from the left. (Components mounted on the printed board are not shown). 8 and 9 are connectors attached to the transmitter printed board 5 and the receiver printed board 7, respectively; 8a and 9a are coaxial cables that connect between the connectors 8 and 9 and the printed board; 10 is housed in an individual shield case. , an antenna duplexer attached to the lower part of the partition plate 2, 11 a connector of the antenna duplexer 10, 12 an antenna connector connected to the antenna, and 11a a connector 11 and a connector 12.
13 is a connecting part between the connectors 8, 9 and the antenna duplexer 10; 14 is an upper lid, and a fitting part 14a, 14b. Reference numeral 15 denotes a lower lid having a fitting part 15a between it and the lower part of the housing body 1.

In order to assemble the radio casing having the above configuration, the connectors 8 and 9 are mechanically fixed to the transmitter printed board 5 and the receiver printed board 7, respectively, and electrically connected using coaxial cables 8a and 9a. Next, the antenna duplexer 10 is attached to the partition plate 2 of the housing body 1.
Connectors 8 and 9 as described below.
are respectively connected to the antenna duplexer 10, and the transmitter printed board 5, the synthesizer part printed board 6, and the receiver printed board 7 are housed in an interior partitioned by partitions 3 and 4, and each is secured with screws (not shown). etc., to the upper part of the partition plate 2.

Furthermore, the antenna duplexer 10 is connected to the connector 11,
Antenna connector 1 via coaxial cable 11a
2, and the upper cover 14 is fitted to the upper and lower surfaces of the housing body 1 through the fitting portions 14a and 14b, and the lower cover 15 is fitted to the upper and lower surfaces of the housing body 1 via the fitting portion 15a, thereby completing the assembly.

Next, Figure 2 shows the connector 8 and antenna duplexer 1.
0, shows the detailed structure of the connection part 3 with the partition plate 2 of the housing body, 2a is a hole provided in a part of the partition plate 2, 8b is a connection part provided at the tip of the connector 8, Connector 10 attached to antenna duplexer 10
It is located opposite to a. 13a is the hole 2a
An annular groove 13b provided around the groove 1
It consists of a shield member such as a conductor braid having elasticity and having an annular protrusion embedded in the shield member 3a. Note that the connector 9 and the antenna duplexer 10 can be connected in the same manner.

To assemble the connecting portion 13, the partition plate 2 and the antenna duplexer 10 are fixed close to each other, so that the protrusion 13b is crimped onto the top surface of the antenna duplexer 10, which is electrically stable. connected to. On the other hand, the antenna duplexer 10 connects to the connector 8 by passing the connector 10a provided on the top surface of the antenna duplexer 10 through the hole 2a of the partition plate 2 and connecting it to the coupling part 8a of the connector 8 at the upper part of the partition plate 2. is directly combined with

As explained above, according to the present invention, the transmitting section, receiving section, and synthesizer section are housed as printed boards, and moreover, they are shielded from each other in the same way as if they were provided with separate shield cases, and they are also a countermeasure against unnecessary radiation. It is possible to connect directly to the antenna duplexer, which is a particular problem, without going through a coaxial cable, and since it is completely shielded by a shielding member, unnecessary radiation is suppressed, so there is no need for leakage of radio waves, and furthermore, coaxial cables can be used. Since the characteristics do not change due to routing, stable electrical characteristics can be achieved simply by assembling each part of the radio according to the order, and its industrial value is great.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a radio device casing according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing the detailed configuration of the main parts thereof. DESCRIPTION OF SYMBOLS 1... Housing, 2... Partition plate, 3, 4... Inner partition plate, 5... Transmission section, 6... Receiving section, 8, 9... Connection connector, 10... Antenna duplexer, 2a... …
Through hole, 10a...connector, 13b...shield member.

Claims (1)

[Claims] 1 Upper and lower blocks formed by dividing the inside of the casing into upper and lower parts by partition plates, a thin block formed by further partitioning the upper block into a plurality of pieces laterally by medium partition plates, and a plurality of blocks housed in each of the narrow blocks. , a transmitting section and a receiving section each connected to a connecting connector and configured on a printed board, and a common unit side connector housed in the lower block and connected to the transmitting section and receiving section, and housed in an individual shield case. a duplexer for the antenna, a through hole provided in the partition plate at the top of the duplexer side connector, and a shield member provided around the through hole between the individual shield case of the duplexer; When the duplexer is fixed to the lower block, the tip of the duplexer side connector protrudes through the through hole into the narrow block in which the transmitter and the receiver are accommodated, and the duplexer is fixed to the lower block. By fitting side connectors into the connection connectors of the transmitting section and the receiving section, the duplexer is electrically coupled to the transmitting section and the receiving section, and the duplexer is fixed to the lower part of the partition plate. A case of the duplexer is brought into contact with the partition plate via the shield member, and the transmitting section and the receiving section are shielded from the lower block.